The ability of water-resource managers to adapt to future climatic change is especially challenging in coastal regions of the world. The East Coast of the United States falls into this category given the high number of people living along the Atlantic seaboard and the added strain on resources as populations continue to increase, particularly in the Southeast. Increased temperatures, changes in regional precipitation regimes, and potential increased sea level may have a great impact on existing hydrological systems in the region. The Savannah River originates at the confluence of the Seneca and Tugaloo Rivers, near Hartwell, Ga., and forms the state boundary between South Carolina and Georgia. The J. Strom Thurmond Dam and Lake, located 238 miles upstream from the Atlantic Ocean, is responsible for most of the flow regulation that affects the Savannah River from Augusta, Ga., to the coast. The Savannah Harbor experiences semi-diurnal tides of two low and two high tides in a 24.8-hour period with pronounced differences in tidal range between neap and spring tides occurring on a 14-day and 28-day lunar cycle. Salinity intrusion results from the interaction of three principal forces - streamflow, mean tidal water levels, and tidal range. To analyze, model, and simulate hydrodynamic behaviors at critical coastal streamgages in the Lower Savannah River Estuary, data-mining techniques were applied to over 15 years of hourly streamflow, coastal water-quality, and water-level data. Artificial neural network (ANN) models were trained to learn the variable interactions that cause salinity intrusions. Streamflow data from the 9,850 square-mile Savannah River Basin were input into the model as time-delayed variables. Tidal inputs to the models were obtained by decomposing tidal water-level data into a “periodic” signal of tidal range and a “chaotic” signal of mean water levels. The ANN models were able to convincingly reproduce historical behaviors and generate alternative scenarios of interest. Important freshwater resources are located proximal to the freshwater-saltwater interface of the estuary. The Savannah National Wildlife Refuge is located in the upper portion of the Savannah River Estuary. The tidal freshwater marsh is an essential part of the 28,000-acre refuge and is home to a diverse variety of wildlife and plant communities. Two municipal freshwater intakes are located upstream from the refuge. To evaluate the impact of climate change on salinity intrusion on these resources, inputs of streamflows and mean tidal water levels were modified to incorporate estimated changes in precipitation patterns and sea-level rise appropriate for the Southeastern United States. Changes in mean tidal water levels were changed parametrically for various sea-level rise conditions. Preliminary model results at the U.S. Geological Survey (USGS) Interstate-95 streamgage (station 02198840) for a 7½-year simulation show that historical daily salinity concentrations never exceeded 0.5 practical salinity units (psu). A 1-foot sea-level rise (ft, 30.5 centimeters [cm]) would increase the number of days of salinity concentrations greater than 0.5 psu to 47 days. A 2-ft (61 cm) sea-level rise would increase the number of days to 248.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"2010 South Carolina Environmental Conference Proceedings","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"2010 South Carolina Environmental Conference","conferenceDate":"March 13-17 2010","conferenceLocation":"Myrtle Beach, South Carolina","language":"English","publisher":"South Carolina Environmental Conference","usgsCitation":"Conrads, P., Roehl, E.A., Daamen, R.C., Cook, J., Sexton, C.T., Tufford, D.L., Carbone, G.J., and Dow, K., 2010, Estimating salinity intrusion effects due to climate change on the Lower Savannah River Estuary, in 2010 South Carolina Environmental Conference Proceedings, Myrtle Beach, South Carolina, March 13-17 2010, 8 p.","productDescription":"8 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":307596,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":307595,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://cisa.sc.edu/library_CPP.html","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Georgia, South Carolina","otherGeospatial":"Lower Savannah River Estuary","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -81.12866396878053,\n 31.73606362170419\n ],\n [\n -81.08922042433618,\n 31.729354188100046\n ],\n [\n -80.81705996766948,\n 31.98731612795615\n ],\n [\n -80.80128254989155,\n 32.057543979020494\n ],\n [\n -80.6750632076695,\n 32.17780922241056\n ],\n [\n -81.13260832322477,\n 32.38122972273655\n ],\n [\n -81.20755105766925,\n 32.29124741896493\n ],\n [\n -81.27460508322473,\n 31.906989849666886\n ],\n [\n -81.12866396878053,\n 31.73606362170419\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"55e034b7e4b0f42e3d040e03","contributors":{"authors":[{"text":"Conrads, Paul 0000-0003-0408-4208 pconrads@usgs.gov","orcid":"https://orcid.org/0000-0003-0408-4208","contributorId":764,"corporation":false,"usgs":true,"family":"Conrads","given":"Paul","email":"pconrads@usgs.gov","affiliations":[{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":false,"id":570279,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roehl, Edwin A.","contributorId":89242,"corporation":false,"usgs":true,"family":"Roehl","given":"Edwin","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":570280,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Daamen, Ruby C.","contributorId":105391,"corporation":false,"usgs":true,"family":"Daamen","given":"Ruby","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":570281,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cook, John B.","contributorId":45594,"corporation":false,"usgs":true,"family":"Cook","given":"John B.","affiliations":[],"preferred":false,"id":570282,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sexton, Charles T.","contributorId":147101,"corporation":false,"usgs":false,"family":"Sexton","given":"Charles","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":570283,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tufford, Daniel L. tufford@sc.edu","contributorId":147102,"corporation":false,"usgs":false,"family":"Tufford","given":"Daniel","email":"tufford@sc.edu","middleInitial":"L.","affiliations":[],"preferred":false,"id":570284,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Carbone, Gregory J. greg.carbone@sc.edu","contributorId":147103,"corporation":false,"usgs":false,"family":"Carbone","given":"Gregory","email":"greg.carbone@sc.edu","middleInitial":"J.","affiliations":[],"preferred":false,"id":570285,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Dow, Kristin","contributorId":147104,"corporation":false,"usgs":false,"family":"Dow","given":"Kristin","email":"","affiliations":[],"preferred":false,"id":570286,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70198308,"text":"70198308 - 2010 - Source materials for inception stage Hawaiian magmas: Pb‐He isotope variations for early Kilauea","interactions":[],"lastModifiedDate":"2018-07-31T09:33:51","indexId":"70198308","displayToPublicDate":"2010-03-11T08:19:48","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1757,"text":"Geochemistry, Geophysics, Geosystems","active":true,"publicationSubtype":{"id":10}},"title":"Source materials for inception stage Hawaiian magmas: Pb‐He isotope variations for early Kilauea","docAbstract":"New noble gas and radiogenic isotopic compositions are presented for tholeiitic, transitional, and alkalic rocks from the submarine Hilina region on the south flank of Kilauea, Hawaii. The 3He/4He ratios for undegassed glass and olivine separates (11–26 Ra) contrast with those of postshield and rejuvenated alkalic lavas, consistent with the alkalic and transitional basalts at Hilina corresponding to early Kilauea magmas. Most early Kilauea samples contain highly radiogenic Pb isotopes compared with other Hawaiian rocks and therefore derive from a Hawaiian plume end‐member source (here referred to as the Hilina component) distinctive in that respect. Besides radiogenic Pb isotopes, the Hilina component has relatively low 3He/4He (<12 Ra) among the Hawaiian magmas. Hawaiian inception stage magmas, including Hilina, Loihi, and deep Hana Ridge (east Maui), define a linear array in 206Pb/204Pb‐3He/4He isotope space, indicating that mixing between the Hilina and Loihi components (or their melts) dominates magmatism at the leading edge of the Hawaiian plume. The Hilina component's isotopic characteristics can be derived from young subduction‐recycled crust or metasomatised mantle. The isotopic differences between the geographically discriminated Kea and Loa trend volcanic chains, observed in shield stage lavas, are also seen in the inception stage magmas, suggesting that proportions of melts derived from the Hilina and Loihi components were different between the Kea and Loa trend volcanoes.
","language":"English","publisher":"AGU","doi":"10.1029/2009GC002760","usgsCitation":"Hanyu, T., Kimura, J., Katakuse, M., Calvert, A.T., Sisson, T.W., and Nakai, S., 2010, Source materials for inception stage Hawaiian magmas: Pb‐He isotope variations for early Kilauea: Geochemistry, Geophysics, Geosystems, v. 11, no. 3, Q0AC01; 25 p., https://doi.org/10.1029/2009GC002760.","productDescription":"Q0AC01; 25 p.","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":475742,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2009gc002760","text":"Publisher Index Page"},{"id":356039,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.29483795166016,\n 19.392448679313798\n ],\n [\n -155.29483795166016,\n 19.43842814442463\n ],\n [\n -155.2371597290039,\n 19.43842814442463\n ],\n [\n -155.2371597290039,\n 19.392448679313798\n ],\n [\n -155.29483795166016,\n 19.392448679313798\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"11","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-03-11","publicationStatus":"PW","scienceBaseUri":"5b98b7afe4b0702d0e844f05","contributors":{"authors":[{"text":"Hanyu, Takeshi","contributorId":206542,"corporation":false,"usgs":false,"family":"Hanyu","given":"Takeshi","email":"","affiliations":[],"preferred":false,"id":740978,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kimura, Jun-Ichi","contributorId":77719,"corporation":false,"usgs":true,"family":"Kimura","given":"Jun-Ichi","email":"","affiliations":[],"preferred":false,"id":740979,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Katakuse, Maiko","contributorId":206543,"corporation":false,"usgs":false,"family":"Katakuse","given":"Maiko","email":"","affiliations":[],"preferred":false,"id":740980,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Calvert, Andrew T. 0000-0001-5237-2218 acalvert@usgs.gov","orcid":"https://orcid.org/0000-0001-5237-2218","contributorId":2694,"corporation":false,"usgs":true,"family":"Calvert","given":"Andrew","email":"acalvert@usgs.gov","middleInitial":"T.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":740981,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sisson, Thomas W. 0000-0003-3380-6425 tsisson@usgs.gov","orcid":"https://orcid.org/0000-0003-3380-6425","contributorId":2341,"corporation":false,"usgs":true,"family":"Sisson","given":"Thomas","email":"tsisson@usgs.gov","middleInitial":"W.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":740982,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nakai, Shun’ichi","contributorId":206544,"corporation":false,"usgs":false,"family":"Nakai","given":"Shun’ichi","email":"","affiliations":[],"preferred":false,"id":740983,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":98226,"text":"ofr20101041 - 2010 - Reported Historic Asbestos Mines, Historic Asbestos Prospects, and Other Natural Occurrences of Asbestos in Oregon and Washington","interactions":[],"lastModifiedDate":"2012-02-10T00:10:05","indexId":"ofr20101041","displayToPublicDate":"2010-03-03T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2010-1041","title":"Reported Historic Asbestos Mines, Historic Asbestos Prospects, and Other Natural Occurrences of Asbestos in Oregon and Washington","docAbstract":"This map and its accompanying dataset provide information for 51 natural occurrences of asbestos in Washington and Oregon, using descriptions found in the geologic literature. Data on location, mineralogy, geology, and relevant literature for each asbestos site are provided. Using the map and digital data in this report, the user can examine the distribution of previously reported asbestos occurrences and their geological characteristics in the Pacific Northwest States of Washington and Oregon. This report is part of an ongoing study by the U.S. Geological Survey to identify and map reported natural asbestos occurrences in the United States, which thus far includes similar maps and datasets of natural asbestos occurrences within the Eastern United States (http://pubs.usgs.gov/of/2005/1189/), the Central United States (http://pubs.usgs.gov/of/2006/1211/), the Rocky Mountain States (http://pubs.usgs.gov/of/2007/1182/), and the Southwestern United States (http://pubs.usgs.gov/of/2008/1095/). These reports are intended to provide State and local government agencies and other stakeholders with geologic information on natural occurrences of asbestos in the United States.\r\n","language":"ENGLISH","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20101041","usgsCitation":"Van Gosen, B.S., 2010, Reported Historic Asbestos Mines, Historic Asbestos Prospects, and Other Natural Occurrences of Asbestos in Oregon and Washington: U.S. Geological Survey Open-File Report 2010-1041, Plate (PDF); References (PDF, XLS); Asbestos Sites (PDF, XLS); Fibrous Amphiboles (PDF, XLS), https://doi.org/10.3133/ofr20101041.","productDescription":"Plate (PDF); References (PDF, XLS); Asbestos Sites (PDF, XLS); Fibrous Amphiboles (PDF, XLS)","onlineOnly":"N","additionalOnlineFiles":"Y","costCenters":[{"id":177,"text":"Central Region Mineral Resources Science Center","active":false,"usgs":true}],"links":[{"id":125433,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr_2010_1041.jpg"},{"id":13486,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2010/1041/","linkFileType":{"id":5,"text":"html"}}],"projection":"Lambert Conformal Conic","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -125,40 ], [ -125,50 ], [ -115,50 ], [ -115,40 ], [ -125,40 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a58e4b07f02db62f59b","contributors":{"authors":[{"text":"Van Gosen, Bradley S. 0000-0003-4214-3811 bvangose@usgs.gov","orcid":"https://orcid.org/0000-0003-4214-3811","contributorId":1174,"corporation":false,"usgs":true,"family":"Van Gosen","given":"Bradley","email":"bvangose@usgs.gov","middleInitial":"S.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":304718,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70044275,"text":"70044275 - 2010 - Representing pump-capacity relations in groundwater simulation models","interactions":[],"lastModifiedDate":"2018-10-10T11:19:35","indexId":"70044275","displayToPublicDate":"2010-03-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Representing pump-capacity relations in groundwater simulation models","docAbstract":"The yield (or discharge) of constant-speed pumps varies with the total dynamic head (or lift) against which the pump is discharging. The variation in yield over the operating range of the pump may be substantial. In groundwater simulations that are used for management evaluations or other purposes, where predictive accuracy depends on the reliability of future discharge estimates, model reliability may be enhanced by including the effects of head-capacity (or pump-capacity) relations on the discharge from the well. A relatively simple algorithm has been incorporated into the widely used MODFLOW groundwater flow model that allows a model user to specify head-capacity curves. The algorithm causes the model to automatically adjust the pumping rate each time step to account for the effect of drawdown in the cell and changing lift, and will shut the pump off if lift exceeds a critical value. The algorithm is available as part of a new multinode well package (MNW2) for MODFLOW.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ground Water","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.2009.00619.x","usgsCitation":"Konikow, L.F., 2010, Representing pump-capacity relations in groundwater simulation models: Ground Water, v. 48, no. 1, p. 106-110, https://doi.org/10.1111/j.1745-6584.2009.00619.x.","productDescription":"5 p.","startPage":"106","endPage":"110","ipdsId":"IP-013889","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":270860,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":270859,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6584.2009.00619.x"}],"country":"United States","volume":"48","issue":"1","noUsgsAuthors":false,"publicationDate":"2009-12-23","publicationStatus":"PW","scienceBaseUri":"53cd707ae4b0b2908510711a","contributors":{"authors":[{"text":"Konikow, Leonard F. 0000-0002-0940-3856 lkonikow@usgs.gov","orcid":"https://orcid.org/0000-0002-0940-3856","contributorId":158,"corporation":false,"usgs":true,"family":"Konikow","given":"Leonard","email":"lkonikow@usgs.gov","middleInitial":"F.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":475228,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70173408,"text":"70173408 - 2010 - Ecoregion and land-use influence invertebrate and detritus transport from headwater streams","interactions":[],"lastModifiedDate":"2016-06-20T18:34:38","indexId":"70173408","displayToPublicDate":"2010-02-23T13:15:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1696,"text":"Freshwater Biology","active":true,"publicationSubtype":{"id":10}},"title":"Ecoregion and land-use influence invertebrate and detritus transport from headwater streams","docAbstract":"Summary 1. Habitats are often connected by fluxes of energy and nutrients across their boundaries. For example, headwater streams are linked to surrounding riparian vegetation through invertebrate and leaf litter inputs, and there is evidence that consumers in downstream habitats are subsidised by resources flowing from headwater systems. However, the strength of these linkages and the manner in which potential headwater subsidies vary along climatic and disturbance gradients are unknown.
\n2. We quantified the downstream transport of invertebrates, organic matter and inorganic sediment from 60 fishless headwater streams in the Wenatchee River Basin located on the eastern slope of the Cascade Range in Washington, U.S.A. Streams were classified into four groups (each n = 15) based on their position within two ecological subregions (wet and dry) and the extent of past timber harvest and road development (logged and unlogged).
\n3. Time and ecoregion were significant for all response variables as transport varied across sampling periods, and dry ecoregion streams displayed significantly higher mean values. Logged sites also generally showed higher mean transport, but only inorganic sediment transport was significantly higher in logged sites. Both ecoregion and land-use interacted significantly with time depending on the response variable. Differences among stream categories were driven by relatively low levels of transport in unlogged drainages of the wet ecoregion. Interestingly, unlogged dry ecoregion streams showed comparable transport rates to logged sites in the wet ecoregion. Dominance by deciduous riparian vegetation in all but unlogged streams in the wet ecoregion is a primary hypothesised mechanism determining transport dynamics in our study streams.
\n4. Understanding the quantity and variation of headwater subsidies across climate and disturbance gradients is needed to appreciate the significance of ecological linkages between headwaters and associated downstream habitats. This will enable the accurate assessment of resource management impacts on stream ecosystems. Predicting the consequences of natural and anthropogenic disturbances on headwater stream transport rates will require knowledge of how both local and regional factors influence these potential subsidies. Our results suggest that resources transported from headwater streams reflect both the meso-scale land-use surrounding these areas and the constraints imposed by the ecoregion in which they are embedded.
","language":"English","publisher":"Blackwell Science","doi":"10.1111/j.1365-2427.2009.02344.x","usgsCitation":"Binckley, C.A., Wipfli, M.S., Medhurst, R.B., Polivka, K., Hessburg, P.F., Salter, R.B., and Kill, J.Y., 2010, Ecoregion and land-use influence invertebrate and detritus transport from headwater streams: Freshwater Biology, v. 55, no. 6, p. 1205-1218, https://doi.org/10.1111/j.1365-2427.2009.02344.x.","productDescription":"14 p.","startPage":"1205","endPage":"1218","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-014628","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":324055,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Cascade Mountains, Wenatchee National Forest, Wenatchee River subbasin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.48681640624999,\n 46.76244305208004\n ],\n [\n -121.48681640624999,\n 48.669198799260045\n ],\n [\n -118.564453125,\n 48.669198799260045\n ],\n [\n -118.564453125,\n 46.76244305208004\n ],\n [\n -121.48681640624999,\n 46.76244305208004\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"55","issue":"6","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2010-05-10","publicationStatus":"PW","scienceBaseUri":"576913b6e4b07657d19ff022","contributors":{"authors":[{"text":"Binckley, Christopher A.","contributorId":172212,"corporation":false,"usgs":false,"family":"Binckley","given":"Christopher","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":639956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wipfli, Mark S. 0000-0002-4856-6068 mwipfli@usgs.gov","orcid":"https://orcid.org/0000-0002-4856-6068","contributorId":1425,"corporation":false,"usgs":true,"family":"Wipfli","given":"Mark","email":"mwipfli@usgs.gov","middleInitial":"S.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true}],"preferred":true,"id":637092,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Medhurst, R. Bruce","contributorId":58480,"corporation":false,"usgs":false,"family":"Medhurst","given":"R.","email":"","middleInitial":"Bruce","affiliations":[],"preferred":false,"id":639957,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Polivka, Karl","contributorId":80093,"corporation":false,"usgs":false,"family":"Polivka","given":"Karl","email":"","affiliations":[{"id":12647,"text":"U.S. Forest Service, Pacific Northwest Research Station","active":true,"usgs":false}],"preferred":false,"id":639958,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hessburg, Paul F.","contributorId":46481,"corporation":false,"usgs":false,"family":"Hessburg","given":"Paul","email":"","middleInitial":"F.","affiliations":[{"id":12647,"text":"U.S. Forest Service, Pacific Northwest Research Station","active":true,"usgs":false}],"preferred":false,"id":639959,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Salter, R. Brion","contributorId":97718,"corporation":false,"usgs":false,"family":"Salter","given":"R.","email":"","middleInitial":"Brion","affiliations":[{"id":12647,"text":"U.S. Forest Service, Pacific Northwest Research Station","active":true,"usgs":false}],"preferred":false,"id":639960,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kill, Joshua Y.","contributorId":172213,"corporation":false,"usgs":false,"family":"Kill","given":"Joshua","email":"","middleInitial":"Y.","affiliations":[],"preferred":false,"id":639961,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":98193,"text":"sir20095199 - 2010 - Development and Application of Regression Models for Estimating Nutrient Concentrations in Streams of the Conterminous United States, 1992-2001","interactions":[],"lastModifiedDate":"2012-03-02T17:16:07","indexId":"sir20095199","displayToPublicDate":"2010-02-13T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2009-5199","title":"Development and Application of Regression Models for Estimating Nutrient Concentrations in Streams of the Conterminous United States, 1992-2001","docAbstract":"Data collected for the U.S. Geological Survey National Water-Quality Assessment program from 1992-2001 were used to investigate the relations between nutrient concentrations and nutrient sources, hydrology, and basin characteristics. Regression models were developed to estimate annual flow-weighted concentrations of total nitrogen and total phosphorus using explanatory variables derived from currently available national ancillary data. Different total-nitrogen regression models were used for agricultural (25 percent or more of basin area classified as agricultural land use) and nonagricultural basins. Atmospheric, fertilizer, and manure inputs of nitrogen, percent sand in soil, subsurface drainage, overland flow, mean annual precipitation, and percent undeveloped area were significant variables in the agricultural basin total nitrogen model. Significant explanatory variables in the nonagricultural total nitrogen model were total nonpoint-source nitrogen input (sum of nitrogen from manure, fertilizer, and atmospheric deposition), population density, mean annual runoff, and percent base flow.\r\n\r\nThe concentrations of nutrients derived from regression (CONDOR) models were applied to drainage basins associated with the U.S. Environmental Protection Agency (USEPA) River Reach File (RF1) to predict flow-weighted mean annual total nitrogen concentrations for the conterminous United States. The majority of stream miles in the Nation have predicted concentrations less than 5 milligrams per liter. Concentrations greater than 5 milligrams per liter were predicted for a broad area extending from Ohio to eastern Nebraska, areas spatially associated with greater application of fertilizer and manure. Probabilities that mean annual total-nitrogen concentrations exceed the USEPA regional nutrient criteria were determined by incorporating model prediction uncertainty. In all nutrient regions where criteria have been established, there is at least a 50 percent probability of exceeding the criteria in more than half of the stream miles.\r\n\r\nDividing calibration sites into agricultural and nonagricultural groups did not improve the explanatory capability for total phosphorus models. The group of explanatory variables that yielded the lowest model error for mean annual total phosphorus concentrations includes phosphorus input from manure, population density, amounts of range land and forest land, percent sand in soil, and percent base flow. However, the large unexplained variability and associated model error precluded the use of the total phosphorus model for nationwide extrapolations.\r\n","language":"ENGLISH","publisher":"U.S. Geological Survey","doi":"10.3133/sir20095199","collaboration":"National Water-Quality Assessment Program","usgsCitation":"Spahr, N.E., Mueller, D.K., Wolock, D.M., Hitt, K.J., and Gronberg, J.M., 2010, Development and Application of Regression Models for Estimating Nutrient Concentrations in Streams of the Conterminous United States, 1992-2001: U.S. Geological Survey Scientific Investigations Report 2009-5199, viii, 22 p. , https://doi.org/10.3133/sir20095199.","productDescription":"viii, 22 p. ","onlineOnly":"N","additionalOnlineFiles":"N","temporalStart":"1992-01-01","temporalEnd":"2001-12-31","costCenters":[{"id":191,"text":"Colorado Water Science Center","active":true,"usgs":true}],"links":[{"id":125887,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2009_5199.jpg"},{"id":13437,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2009/5199/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4880e4b07f02db515e39","contributors":{"authors":[{"text":"Spahr, Norman E. nspahr@usgs.gov","contributorId":1977,"corporation":false,"usgs":true,"family":"Spahr","given":"Norman","email":"nspahr@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":304631,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mueller, David K. mueller@usgs.gov","contributorId":1585,"corporation":false,"usgs":true,"family":"Mueller","given":"David","email":"mueller@usgs.gov","middleInitial":"K.","affiliations":[{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":304630,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wolock, David M. 0000-0002-6209-938X dwolock@usgs.gov","orcid":"https://orcid.org/0000-0002-6209-938X","contributorId":540,"corporation":false,"usgs":true,"family":"Wolock","given":"David","email":"dwolock@usgs.gov","middleInitial":"M.","affiliations":[{"id":353,"text":"Kansas Water Science Center","active":false,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true}],"preferred":true,"id":304629,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hitt, Kerie J.","contributorId":54565,"corporation":false,"usgs":true,"family":"Hitt","given":"Kerie","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":304633,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gronberg, JoAnn M. 0000-0003-4822-7434 jmgronbe@usgs.gov","orcid":"https://orcid.org/0000-0003-4822-7434","contributorId":3548,"corporation":false,"usgs":true,"family":"Gronberg","given":"JoAnn","email":"jmgronbe@usgs.gov","middleInitial":"M.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":304632,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":98163,"text":"sim3108 - 2010 - Geologic Map of the House Rock Valley Area, Coconino County, Northern Arizona","interactions":[],"lastModifiedDate":"2012-02-10T00:11:51","indexId":"sim3108","displayToPublicDate":"2010-02-03T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":333,"text":"Scientific Investigations Map","code":"SIM","onlineIssn":"2329-132X","printIssn":"2329-1311","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"3108","title":"Geologic Map of the House Rock Valley Area, Coconino County, Northern Arizona","docAbstract":"This geologic map is a cooperative effort of the U.S. Geological Survey (USGS), the Bureau of Land Management, the National Park Service, and the U.S. Forest Service to provide a geologic database for resource management officials and visitor information services. This map was produced in response to information needs related to a proposed withdrawal of three segregated land areas near Grand Canyon National Park, Arizona, from new hard rock mining activity. House Rock Valley was designated as the east parcel of the segregated lands near the Grand Canyon. This map was needed to provide connectivity for the geologic framework of the Grand Canyon segregated land areas. \r\n\r\nThis geologic map of the House Rock Valley area encompasses approximately 280 mi2 (85.4 km2) within Coconino County, northern Arizona, and is bounded by longitude 111 degrees 37'30' to 112 degrees 05' W. and latitude 36 degrees 30' to 36 degrees 50' N. The map area is in the eastern part of the Arizona Strip, which lies within the southern Colorado Plateaus geologic province (herein Colorado Plateau). The Arizona Strip is the part of Arizona lying north of the Colorado River. The map is bound on the east by the Colorado River in Marble Canyon within Grand Canyon National Park and Glen Canyon National Recreation Area, on the south and west by the Kaibab National Forest and Grand Canyon National Game Preserve, and on the north by the Vermilion Cliffs Natural Area, the Paria Canyon Vermilion Cliffs Wilderness Area, and the Vermilion Cliffs National Monument. House Rock State Buffalo Ranch also bounds the southern edge of the map area. \r\n\r\nThe Bureau of Land Management Arizona Field Office in St. George, Utah, manages public lands of the Vermilion Cliffs Natural Area, Paria Canyon - Vermilion Cliffs Wilderness and Vermilion Cliffs National Monument. The North Kaibab Ranger District in Fredonia, Arizona, manages U.S. Forest Service land along the west edge of the map area and House Rock State Buffalo Ranch. Other lands include about 13 sections of Arizona State land, about ? of a section of private land along House Rock Wash, and about 1? sections of private land at Cliff Dwellers Lodge, Vermilion Cliffs Lodge, and Marble Canyon, Arizona. \r\n\r\nLandmark features within the map area include the Vermilion Cliffs, Paria Plateau, Marble Canyon, and House Rock Valley. Surface drainage in House Rock Valley is to the east toward the Colorado River in Marble Canyon. Large tributaries of Marble Canyon from north to south include Badger Canyon, Soap Creek, Rider Canyon, North Canyon, Bedrock Canyon, and South Canyon. Elevations range from about 2,875 ft (876 m) at the Colorado River in the southeast corner of the map to approximately 7,355 ft (2,224 m) on the east rim of Paria Plateau along the north-central edge of the map area. \r\n\r\nThree small settlements are in the map area along U.S. Highway 89A, Cliff Dwellers Lodge, Vermilion Cliffs Lodge, and Marble Canyon, Arizona. The community of Jacob Lake is about 9 mi (14.5 km) west of House Rock Valley on the Kaibab Plateau. Lees Ferry is 5 mi (8 km) north of Marble Canyon and marks the confluence of the Paria and Colorado Rivers and the beginning of Marble Canyon. U.S. Highway 89A provides access to the northern part of the map area. Dirt roads lead south into House Rock Valley from U.S. Highway 89A and are collectively maintained by the Bureau of Land Management, the U.S. National Forest Service, and the Grand Canyon Trust. \r\n\r\nHouse Rock Valley is one of the few remaining areas where uniform geologic mapping is needed for connectivity to the regional Grand Canyon geologic framework. This information is useful to Federal and State resource managers who direct environmental and land management programs that encompass such issues as range management, biological studies, flood control, water, and mineral-resource investigations. The geologic information will support future and ongoing geologic investigations and scientific studies ","language":"ENGLISH","publisher":"U.S. Geological Survey","doi":"10.3133/sim3108","collaboration":"Prepared in cooperation with the Bureau of Land Management, the National Park Service, and the U.S. Forest Service","usgsCitation":"Billingsley, G.H., and Priest, S.S., 2010, Geologic Map of the House Rock Valley Area, Coconino County, Northern Arizona: U.S. Geological Survey Scientific Investigations Map 3108, 1 map; 1 pamphlet (23 p.); 4 data files, https://doi.org/10.3133/sim3108.","productDescription":"1 map; 1 pamphlet (23 p.); 4 data files","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":670,"text":"Western Region Geology and Geophysics Field Science Center-Flagstaff","active":false,"usgs":true}],"links":[{"id":194306,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":13407,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sim/3108/","linkFileType":{"id":5,"text":"html"}}],"scale":"50000","projection":"Universal Transverse Mercator projection","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -112.08333333333333,36.5 ], [ -112.08333333333333,36.833333333333336 ], [ -111.61749999999999,36.833333333333336 ], [ -111.61749999999999,36.5 ], [ -112.08333333333333,36.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a84bb","contributors":{"authors":[{"text":"Billingsley, George H.","contributorId":20711,"corporation":false,"usgs":true,"family":"Billingsley","given":"George","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":304506,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Priest, Susan S. spriest@usgs.gov","contributorId":30204,"corporation":false,"usgs":true,"family":"Priest","given":"Susan","email":"spriest@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":false,"id":304507,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":98167,"text":"ofr20091260 - 2010 - Bank erosion, mass wasting, water clarity, bathymetry and a sediment budget along the dam-regulated Lower Roanoke River, North Carolina","interactions":[],"lastModifiedDate":"2019-08-28T09:34:46","indexId":"ofr20091260","displayToPublicDate":"2010-02-03T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2009-1260","displayTitle":"Bank Erosion, Mass Wasting, Water Clarity, Bathymetry and a Sediment Budget Along the Dam-Regulated Lower Roanoke River, North Carolina","title":"Bank erosion, mass wasting, water clarity, bathymetry and a sediment budget along the dam-regulated Lower Roanoke River, North Carolina","docAbstract":"Dam construction and its impact on downstream fluvial processes may substantially alter ambient bank stability, floodplain inundation patterns, and channel morphology. Most of the world's largest rivers have been dammed, which has prompted management efforts to mitigate dam effects. Three high dams (completed between 1953 and 1963) occur along the Piedmont portion of the Roanoke River, North Carolina; just downstream, the lower part of the river flows across largely unconsolidated Coastal Plain deposits. To document bank erosion rates along the lower Roanoke River, more than 700 bank erosion pins were installed along 124 bank transects. Additionally, discrete measurements of channel bathymetry, water clarity, and presence or absence of mass wasting were documented along the entire 153-kilometer-long study reach. Amounts of bank erosion in combination with prior estimates of floodplain deposition were used to develop a bank erosion and floodplain deposition sediment budget for the lower river. Present bank erosion rates are relatively high [mean 42 milimeters per year (mm/yr)] and are greatest along the middle reaches (mean 60 mm/yr) and on lower parts of the bank on all reaches. Erosion rates were likely higher along upstream reaches than present erosion rates such that erosion rate maxima have migrated downstream. Mass wasting and water clarity also peak along the middle reaches.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20091260","usgsCitation":"Schenk, E.R., Hupp, C.R., Richter, J.M., and Kroes, D.E., 2010, Bank erosion, mass wasting, water clarity, bathymetry and a sediment budget along the dam-regulated Lower Roanoke River, North Carolina: U.S. Geological Survey Open-File Report 2009-1260, 112 p., https://doi.org/10.3133/ofr20091260.","productDescription":"112 p.","numberOfPages":"112","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true},{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"links":[{"id":194305,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":13412,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2009/1260/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"North Carolina","otherGeospatial":"Roanoke River","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -77.646639,36.009613 ], [ -77.646639,36.328348 ], [ -76.992222,36.328348 ], [ -76.992222,36.009613 ], [ -77.646639,36.009613 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a82e4b07f02db64ab44","contributors":{"authors":[{"text":"Schenk, Edward R. 0000-0001-6886-5754 eschenk@usgs.gov","orcid":"https://orcid.org/0000-0001-6886-5754","contributorId":2183,"corporation":false,"usgs":true,"family":"Schenk","given":"Edward","email":"eschenk@usgs.gov","middleInitial":"R.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":304519,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hupp, Cliff R. 0000-0003-1853-9197 crhupp@usgs.gov","orcid":"https://orcid.org/0000-0003-1853-9197","contributorId":2344,"corporation":false,"usgs":true,"family":"Hupp","given":"Cliff","email":"crhupp@usgs.gov","middleInitial":"R.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":304520,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Richter, Jean M.","contributorId":53053,"corporation":false,"usgs":true,"family":"Richter","given":"Jean","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":304522,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kroes, Daniel E.","contributorId":32260,"corporation":false,"usgs":true,"family":"Kroes","given":"Daniel","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":304521,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":98160,"text":"ofr20091203 - 2010 - Preliminary use of uric acid as a biomarker for wading birds on Everglades Tree Islands, Florida, United States ","interactions":[],"lastModifiedDate":"2018-11-01T12:07:48","indexId":"ofr20091203","displayToPublicDate":"2010-01-29T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2009-1203","title":"Preliminary use of uric acid as a biomarker for wading birds on Everglades Tree Islands, Florida, United States ","docAbstract":"Concentrations of organic biomarkers and concentrations of phosphorus in soil cores can potentially be used as proxies for historic population densities of wading birds on tree islands in the Florida Everglades. This report focuses on establishing a link between the organic biomarker uric acid found in wading bird guano and the high phosphorus concentrations in tree island soils in the Florida Everglades. Uric acid was determined in soil core sections, in surface samples, and in bird guano by using a method of high-performance liquid chromatography-mass spectrometry (HPLC-MS) developed for this purpose. Preliminary results show an overall correlation between uric acid and total phosphorus in three soil cores, with a general trend of decreasing concentrations of both uric acid and phosphorus with depth. However, we have also found no uric acid in a soil core having high concentrations of phosphorus. We believe that this result may be explained by different geochemical circumstances at that site. \r\n","language":"English","publisher":"U.S. Geological Survey ","doi":"10.3133/ofr20091203","usgsCitation":"Bates, A.L., Orem, W.H., Newman, S., Gawlik, D.E., Lerch, H.E., Corum, M., and Van Winkle, M., 2010, Preliminary use of uric acid as a biomarker for wading birds on Everglades Tree Islands, Florida, United States : U.S. Geological Survey Open-File Report 2009-1203, v, 26 p., https://doi.org/10.3133/ofr20091203.","productDescription":"v, 26 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":125431,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr_2009_1203.jpg"},{"id":13403,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2009/1203/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida","otherGeospatial":"Everglade Tree Islands","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -81,25 ], [ -81,27 ], [ -80,27 ], [ -80,25 ], [ -81,25 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4acce4b07f02db67e42e","contributors":{"authors":[{"text":"Bates, Anne L. 0000-0002-4875-4675 abates@usgs.gov","orcid":"https://orcid.org/0000-0002-4875-4675","contributorId":2789,"corporation":false,"usgs":true,"family":"Bates","given":"Anne","email":"abates@usgs.gov","middleInitial":"L.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":304496,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Orem, William H. 0000-0003-4990-0539 borem@usgs.gov","orcid":"https://orcid.org/0000-0003-4990-0539","contributorId":577,"corporation":false,"usgs":true,"family":"Orem","given":"William","email":"borem@usgs.gov","middleInitial":"H.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":304493,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Newman, Susan","contributorId":15308,"corporation":false,"usgs":true,"family":"Newman","given":"Susan","email":"","affiliations":[],"preferred":false,"id":304497,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gawlik, Dale E.","contributorId":88055,"corporation":false,"usgs":true,"family":"Gawlik","given":"Dale","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":304499,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lerch, Harry E. tlerch@usgs.gov","contributorId":600,"corporation":false,"usgs":true,"family":"Lerch","given":"Harry","email":"tlerch@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":304494,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Corum, M.D. 0000-0002-9038-3935 mcorum@usgs.gov","orcid":"https://orcid.org/0000-0002-9038-3935","contributorId":2249,"corporation":false,"usgs":true,"family":"Corum","given":"M.D.","email":"mcorum@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":304495,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Van Winkle, Monica","contributorId":50622,"corporation":false,"usgs":true,"family":"Van Winkle","given":"Monica","email":"","affiliations":[],"preferred":false,"id":304498,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":98154,"text":"ofr20101001 - 2010 - Volcanogenic uranium deposits: Geology, geochemical processes, and criteria for resource assessment","interactions":[],"lastModifiedDate":"2022-06-16T20:37:36.831618","indexId":"ofr20101001","displayToPublicDate":"2010-01-27T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2010-1001","title":"Volcanogenic uranium deposits: Geology, geochemical processes, and criteria for resource assessment","docAbstract":"Felsic volcanic rocks have long been considered a primary source of uranium for many kinds of uranium deposits, but volcanogenic uranium deposits themselves have generally not been important resources. Until the past few years, resource summaries for the United States or the world generally include volcanogenic in the broad category of \"other deposits\" because they comprised less than 0.5 percent of past production or estimated resources. Exploration in the United States from the 1940s through 1982 discovered hundreds of prospects in volcanic rocks, of which fewer than 20 had some recorded production. Intensive exploration in the late 1970s found some large deposits, but low grades (less than about 0.10 percent U3O8) discouraged economic development. A few deposits in the world, drilled in the 1980s and 1990s, are now known to contain large resources (>20,000 tonnes U3O8). However, research on ore-forming processes and exploration for volcanogenic deposits has lagged behind other kinds of uranium deposits and has not utilized advances in understanding of geology, geochemistry, and paleohydrology of ore deposits in general and epithermal deposits in particular. This review outlines new ways to explore and assess for volcanogenic deposits, using new concepts of convection, fluid mixing, and high heat flow to mobilize uranium from volcanic source rocks and form deposits that are postulated to be large. Much can also be learned from studies of epithermal metal deposits, such as the important roles of extensional tectonics, bimodal volcanism, and fracture-flow systems related to resurgent calderas.
Regional resource assessment is helped by genetic concepts, but hampered by limited information on frontier areas and undiscovered districts. Diagnostic data used to define ore deposit genesis, such as stable isotopic data, are rarely available for frontier areas. A volcanic environment classification, with three classes (proximal, distal, and pre-volcanic structures), permits use of geologic features on 1:500,000 to 1:100,000 scale maps. Geochemical databases for volcanic rocks are postulated to be more effective than databases for stream sediments or surface radioactivity, both of which tend to be inconsistent because of variable leaching of uranium from soils. Based on empirical associations, spatial associations with areas of wet paleoclimate, adjacent oil and gas fields, or evaporite beds are deemed positive. Most difficult to estimate is the location of depositional traps and reduction zones, in part because they are mere points at regional scale.
Grade and tonnage data are reviewed and discussed for 32 deposits in the world. Experience of mining engineers and geologists in Asia suggests that tonnages could be higher than presently known in the Western Hemisphere. Geological analysis, and new data from Asia, suggest a typical or median deposit tonnage of about 5,000 tonnes U3O8, and an optimistic forecast of discoveries in the range of 5,000 to 20,000 tonnes U3O8. The likely grade of undiscovered deposits could be about 0.15 percent U3O8 , based on both western and eastern examples. Volcanic terrane is under-explored, relative to other kinds of uranium deposits, and is considered a favorable frontier area for new discoveries.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20101001","usgsCitation":"Nash, J.T., 2010, Volcanogenic uranium deposits: Geology, geochemical processes, and criteria for resource assessment: U.S. Geological Survey Open-File Report 2010-1001, vi, 99 p., https://doi.org/10.3133/ofr20101001.","productDescription":"vi, 99 p.","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":177,"text":"Central Region Mineral Resources Science Center","active":false,"usgs":true}],"links":[{"id":125805,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr_2010_1001.gif"},{"id":13397,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2010/1001/","linkFileType":{"id":5,"text":"html"}},{"id":402306,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_91039.htm"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0de4b07f02db5fd616","contributors":{"authors":[{"text":"Nash, J. Thomas","contributorId":26306,"corporation":false,"usgs":true,"family":"Nash","given":"J.","email":"","middleInitial":"Thomas","affiliations":[],"preferred":false,"id":304470,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":98127,"text":"ofr20101002 - 2010 - Sediment distribution on the Mississippi-Alabama shelf, northern Gulf of Mexico","interactions":[],"lastModifiedDate":"2023-12-05T15:33:56.555453","indexId":"ofr20101002","displayToPublicDate":"2010-01-19T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2010-1002","title":"Sediment distribution on the Mississippi-Alabama shelf, northern Gulf of Mexico","docAbstract":"The Mississippi-Alabama shelf is bounded to the west by landforms associated with the Mississippi River Delta, to the north by the barrier-island systems of the Mississippi Alabama shoreline, and to the east by the Desoto Canyon. This portion of the northern Gulf of Mexico has been described as a slowly subsiding, passive continental margin (Sydow and Roberts, 1994). Presently, sediment processes on the shelf are a function of prevailing winds and currents: in the past, however, the shelf was the focus of numerous delta cycles. Major episodes of deposition and erosion on the shelf have occurred in response to oscillations in sea level. This report summarizes these processes and identifies areas of near-surface (<10 m below seafloor) deposits that may be suitable for sediment resources.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr20101002","usgsCitation":"Flocks, J.G., Sanford, J., and Smith, J., 2010, Sediment distribution on the Mississippi-Alabama shelf, northern Gulf of Mexico: U.S. Geological Survey Open-File Report 2010-1002, 43 p., https://doi.org/10.3133/ofr20101002.","productDescription":"43 p.","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":198452,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Alabama, Mississippi","otherGeospatial":"Gulf of Mexico, Mississippi-Alabama shelf","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -89.06997333565288,\n 30.333077210754652\n ],\n [\n -89.06997333565288,\n 29.17379862103347\n ],\n [\n -87.1204204846309,\n 29.17379862103347\n ],\n [\n -87.1204204846309,\n 30.333077210754652\n ],\n [\n -89.06997333565288,\n 30.333077210754652\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0be4b07f02db5fc128","contributors":{"authors":[{"text":"Flocks, James G. 0000-0002-6177-7433 jflocks@usgs.gov","orcid":"https://orcid.org/0000-0002-6177-7433","contributorId":816,"corporation":false,"usgs":true,"family":"Flocks","given":"James","email":"jflocks@usgs.gov","middleInitial":"G.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":304255,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sanford, Jordan","contributorId":38254,"corporation":false,"usgs":true,"family":"Sanford","given":"Jordan","affiliations":[],"preferred":false,"id":304256,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Jackie L.","contributorId":105017,"corporation":false,"usgs":true,"family":"Smith","given":"Jackie L.","affiliations":[],"preferred":false,"id":304257,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70174998,"text":"70174998 - 2010 - Integrating physiology, population dynamics and climate to make multi-scale predictions for the spread of an invasive insect: The Argentine ant at Haleakala National Park, Hawaii","interactions":[],"lastModifiedDate":"2020-09-27T19:25:55.593878","indexId":"70174998","displayToPublicDate":"2010-01-11T14:30:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1446,"text":"Ecography: Pattern and Diversity in Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Integrating physiology, population dynamics and climate to make multi-scale predictions for the spread of an invasive insect: The Argentine ant at Haleakala National Park, Hawaii","docAbstract":"\n
Mechanistic models for predicting species’ distribution patterns present particular advantages and challenges relative to models developed from statistical correlations between distribution and climate. They can be especially useful for predicting the range of invasive species whose distribution has not yet reached equilibrium. Here, we illustrate how a physiological model of development for the invasive Argentine ant can be connected to differences in micro-site suitability, population dynamics and climatic gradients; processes operating at quite different spatial scales. Our study is located in the subalpine shrubland of Haleakala National Park, Hawaii, where the spread of Argentine ants Linepithema humile has been documented for the past twenty-five years. We report four main results. First, at a microsite level, the accumulation of degree-days recorded in potential ant nest sites under bare ground or rocks was significantly greater than under a groundcover of grassy vegetation. Second, annual degree-days measured where population boundaries have not expanded (456-521 degree-days), were just above the developmental requirements identified from earlier laboratory studies (445 degree-days above 15.98C). Third, rates of population expansion showed a strong linear relationship with annual degree-days. Finally, an empirical relationship between soil degree-days and climate variables mapped at a broader scale predicts the potential for future range expansion of Argentine ants at Haleakala, particularly to the west of the lower colony and the east of the upper colony. Variation in the availability of suitable microsites, driven by changes in vegetation cover and ultimately climate, provide a hierarchical understanding of the distribution of Argentine ants close to their cold-wet limit of climatic tolerances. We conclude that the integration of physiology, population dynamics and climate mapping holds much promise for making more robust predictions about the potential spread of invasive species.
\nThe Delaware Water Gap National Recreation Area (DEWA) contains a rich geologic and cultural history within its 68,714 acre boundary. Following the border between New Jersey and Pennsylvania, the Delaware River has cut a magnificent gorge through Kittatinny Mountain, the Delaware Water Gap, to which all other gaps in the Appalachian Mountains have been compared. Proximity to many institutions of learning in this densely populated area of the northeastern United States (Fig. 1) makes DEWA an ideal locality to study the geology of this part of the Appalachian Mountains. This one-day field trip comprises an overview discussion of structure, stratigraphy, geomorphology, and glacial geology within the gap. It will be highlighted by hiking a choice of several trails with geologic guides, ranging from gentle to difficult. It is hoped that the “professional” discussions at the stops, loaded with typical geologic jargon, can be translated into simple language that can be understood and assimilated by earth science students along the trails. This trip is mainly targeted for earth science educators and for Pennsylvania geologists needing to meet state-mandated education requirements for licensing professional geologists. The National Park Service, the U.S. Geological Survey, the New Jersey Geological Survey, and local schoolteachers had prepared “The Many Faces of Delaware Water Gap: A Curriculum Guide for Grades 3–6” (Ferrence et al., 2003). Copies of this guide will be given to trip participants and can be downloaded from the GSA Data Repository1. The trip will also be useful for instruction at the graduate level. Much of the information presented in this guidebook is modified from Epstein (2006).
","language":"English","publisher":"GSA","doi":"10.1130/2010.0016(06)","usgsCitation":"Epstein, J.B., 2010, Teachers guide to geologic trails in Delaware Water Gap National Recreation Area, Pennsylvania–New Jersey: GSA Field Guides, v. 16, p. 127-147, https://doi.org/10.1130/2010.0016(06).","productDescription":"21 p.","startPage":"127","endPage":"147","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"links":[{"id":371045,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Jersey, Pennsylvania","otherGeospatial":"Delaware Water Gap National Recreation Area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -75.34423828125,\n 41.17038447781618\n ],\n [\n -74.542236328125,\n 41.17038447781618\n ],\n [\n -74.542236328125,\n 41.96765920367816\n ],\n [\n -75.34423828125,\n 41.96765920367816\n ],\n [\n -75.34423828125,\n 41.17038447781618\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"16","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Epstein, Jack B. jepstein@usgs.gov","contributorId":1412,"corporation":false,"usgs":true,"family":"Epstein","given":"Jack","email":"jepstein@usgs.gov","middleInitial":"B.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":779075,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70207676,"text":"70207676 - 2010 - 40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA","interactions":[],"lastModifiedDate":"2020-01-03T12:45:30","indexId":"70207676","displayToPublicDate":"2010-01-03T12:28:22","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"displayTitle":"40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA","title":"40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA","docAbstract":"40Ar/39Ar dating of muscovite, biotite, and K-feldspar combined with microstructural analysis of lower greenschist-facies, polymetamorphic, phyllitic rocks, and marbles were successfully used to decipher the thermal and tectonic histories of the Westminster and adjacent terranes in western Maryland. The presence of unreset detrital muscovite in some samples demonstrates that temperatures in these rocks never exceeded the closure temperature for argon diffusion in muscovite, ∼350 ± 50 °C. Minor biotite in some arkoses constrains the minimum metamorphic temperatures to ≥∼320 °C. These data show an Early Silurian (ca. 430 Ma) cleavage in the western part of the Westminster terrane and a Late Devonian event (ca. 370 Ma) in the eastern Westminster and adjacent Potomac terranes. These two cleavage domains are separated by the NE-trending, newly identified Parrs Ridge fault zone. We propose that the sinistral transpressive collision of the Carolina terrane with Laurentia emplaced the western portion of the Westminster terrane in the Pennsylvania embayment along the Martic fault where it was folded and cleaved at ca. 430 Ma but otherwise largely sheltered from later deformation. The later Late Devonian dextral transpressive accretion of the outboard Potomac terrane thrust rocks of the eastern Westminster and Potomac terranes to the west, causing Late Devonian (360–370 Ma) S2 cleavage in these rocks, but only minimal discrete overprinting S3 cleavages in rocks farther west. Final juxtaposition and thermal convergence of these terranes occurred along reactivated dextral strike-slip faults in the Alleghanian at ca. 300 Ma.
","language":"English","publisher":"GSA","doi":"10.1130/B30030.1","usgsCitation":"Wintsch, R., Kunk, M.J., Mulvey, B., and Southworth, C.S., 2010, 40Ar/39Ar dating of Silurian and late Devonian cleavages in lower greenschist-facies rocks in the Westminster terrane, Maryland, USA: GSA Bulletin, v. 122, no. 5-6, p. 658-677, https://doi.org/10.1130/B30030.1.","productDescription":"20 p.","startPage":"658","endPage":"677","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":370982,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland","otherGeospatial":"Westminster terrane","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -76.2451171875,\n 38.13455657705411\n ],\n [\n -76.22314453125,\n 38.12591462924157\n ],\n [\n -75.93200683593749,\n 39.48284540453334\n ],\n [\n -76.57470703125,\n 39.58452390500424\n ],\n [\n -77.0361328125,\n 38.86109762182888\n ],\n [\n -76.2451171875,\n 38.13455657705411\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"122","issue":"5-6","noUsgsAuthors":false,"publicationDate":"2009-12-30","publicationStatus":"PW","contributors":{"authors":[{"text":"Wintsch, R. P.","contributorId":116962,"corporation":false,"usgs":true,"family":"Wintsch","given":"R. P.","affiliations":[],"preferred":false,"id":778849,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kunk, Michael J. 0000-0003-4424-7825 mkunk@usgs.gov","orcid":"https://orcid.org/0000-0003-4424-7825","contributorId":200968,"corporation":false,"usgs":true,"family":"Kunk","given":"Michael","email":"mkunk@usgs.gov","middleInitial":"J.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":778850,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mulvey, Brian","contributorId":192712,"corporation":false,"usgs":false,"family":"Mulvey","given":"Brian","email":"","affiliations":[],"preferred":false,"id":778851,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Southworth, C. Scott 0000-0002-7976-7807 ssouthwo@usgs.gov","orcid":"https://orcid.org/0000-0002-7976-7807","contributorId":1608,"corporation":false,"usgs":true,"family":"Southworth","given":"C.","email":"ssouthwo@usgs.gov","middleInitial":"Scott","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":778852,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70120458,"text":"70120458 - 2010 - Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska","interactions":[],"lastModifiedDate":"2018-08-20T18:16:09","indexId":"70120458","displayToPublicDate":"2010-01-01T16:15:27","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1071,"text":"Botany","active":true,"publicationSubtype":{"id":10}},"title":"Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska","docAbstract":"Plant communities of Unalaska Island in the eastern Aleutian Islands of western Alaska, and their relationship to environmental variables, were studied using a combined Braun-Blanquet and multivariate approach. Seventy relevés represented the range of structural and compositional variation in the matrix of vegetation and landform zonation. Eleven major community types were distinguished within six physiognomic–ecological groups: I. Dry coastal meadows: Honckenya peploides beach meadow, Leymus mollis dune meadow. II. Mesic meadows: Athyrium filix-femina – Aconitum maximum meadow, Athyrium filix-femina – Calamagrostis nutkaensis meadow, Erigeron peregrinus – Thelypteris quelpaertensis meadow. III. Wet snowbed meadow: Carex nigricans snowbed meadow. IV. Heath: Linnaea borealis – Empetrum nigrum heath, Phyllodoce aleutica heath, Vaccinium uliginosum – Thamnolia vermicularis fellfield. V. Mire: Carex pluriflora – Plantago macrocarpa mire. VI. Deciduous shrub thicket: Salix barclayi – Athyrium filix-femina thicket. These were interpreted as a complex gradient primarily influenced by soil moisture, elevation, and pH. Phytogeographical and syntaxonomical analysis of the plant communities indicated that the dry coastal meadows, most of the heaths, and the mire vegetation belonged, respectively, to the widespread classes Honckenyo–Elymetea, Loiseleurio–Vaccinietea, and Scheuchzerio–Caricetea, characterized by their circumpolar and widespread species. Amphi-Beringian species were likely diagnostic of amphi-Beringian syntaxa, many of these yet to be described.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Botany","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"NRC Research Press","doi":"10.1139/B09-113","usgsCitation":"Talbot, S., Schofield, W., Talbot, S.L., and Daniels, F.J., 2010, Vegetation of eastern Unalaska Island, Aleutian Islands, Alaska: Botany, v. 88, no. 4, p. 366-388, https://doi.org/10.1139/B09-113.","productDescription":"23 p.","startPage":"366","endPage":"388","numberOfPages":"23","ipdsId":"IP-018004","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":292240,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":292225,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/B09-113"}],"country":"United States","state":"Alaska","otherGeospatial":"Aleutian Islands;Unalaska Island","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 175.0,45.0 ], [ 175.0,63.0 ], [ -157.0,63.0 ], [ -157.0,45.0 ], [ 175.0,45.0 ] ] ] } } ] }","volume":"88","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53edcd57e4b0f61b386d24d2","contributors":{"authors":[{"text":"Talbot, Stephen S.","contributorId":73266,"corporation":false,"usgs":true,"family":"Talbot","given":"Stephen S.","affiliations":[],"preferred":false,"id":498260,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schofield, Wilfred B.","contributorId":97827,"corporation":false,"usgs":true,"family":"Schofield","given":"Wilfred B.","affiliations":[],"preferred":false,"id":498261,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@usgs.gov","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":498258,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Daniels, Fred J.A.","contributorId":70702,"corporation":false,"usgs":true,"family":"Daniels","given":"Fred","email":"","middleInitial":"J.A.","affiliations":[],"preferred":false,"id":498259,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70047181,"text":"70047181 - 2010 - To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history","interactions":[],"lastModifiedDate":"2017-09-26T09:54:44","indexId":"70047181","displayToPublicDate":"2010-01-01T16:11:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1724,"text":"GSA Field Guides","active":true,"publicationSubtype":{"id":10}},"title":"To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history","docAbstract":"The eastern central Front Range of the Rocky Mountains in Colorado has long been a region of geologic interest because of Laramide-age hydrothermal polymetallic vein-related ores. The region is characterized by a well-exposed array of geologic structures associated with ductile and brittle deformation, which record crustal strain over 1.7 billion years of continental growth and evolution. The mineralized areas lie along a broad linear zone termed the Colorado Mineral Belt. This lineament has commonly been interpreted as following a fundamental boundary, such as a suture zone, in the North American Proterozoic crust that acted as a persistent zone of weakness localizing the emplacement of magmas and associated hydrothermal fluid flow. However, the details on the controls of the location, orientation, kinematics, density, permeability, and relative strength of various geological structures and their specific relationships to mineral deposit formation are not related to Proterozoic ancestry in a simple manner. The objectives of this field trip are to show key localities typical of the various types of structures present, show recently compiled and new data, offer alternative conceptual models, and foster dialogue. Topics to be discussed include: (1) structural history of the eastern Front Range; (2) characteristics, kinematics, orientations, and age of ductile and brittle structures and how they may or may not relate to one another and mineral deposit permeability; and (3) characteristics, localization, and evolution of the metal and non–metal-bearing hydrothermal systems in the eastern Colorado Mineral Belt.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"GSA Field Guides","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/2010.0018(06)","usgsCitation":"Caine, J.S., Ridley, J., and Wessel, Z.R., 2010, To reactivate or not to reactivate: nature and varied behavior of structural inheritance in the Proterozoic basement of the Eastern Colorado mineral belt over 1.7 billion years of earth history: GSA Field Guides, v. 18, p. 119-140, https://doi.org/10.1130/2010.0018(06).","productDescription":"22 p.","startPage":"119","endPage":"140","numberOfPages":"22","ipdsId":"IP-022378","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":275493,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":275355,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/2010.0018(06)"}],"country":"United States","state":"Colorado","otherGeospatial":"Colorado Mineral Belt","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -107.9899,37.9765 ], [ -107.9899,40.9914 ], [ -102.881,40.9914 ], [ -102.881,37.9765 ], [ -107.9899,37.9765 ] ] ] } } ] }","volume":"18","noUsgsAuthors":false,"publicationDate":"2011-04-26","publicationStatus":"PW","scienceBaseUri":"51f78eece4b02e26443a93cc","contributors":{"authors":[{"text":"Caine, Jonathan S. 0000-0002-7269-6989 jscaine@usgs.gov","orcid":"https://orcid.org/0000-0002-7269-6989","contributorId":1272,"corporation":false,"usgs":true,"family":"Caine","given":"Jonathan","email":"jscaine@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":481259,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ridley, John","contributorId":77024,"corporation":false,"usgs":true,"family":"Ridley","given":"John","email":"","affiliations":[],"preferred":false,"id":481260,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wessel, Zachary R.","contributorId":104795,"corporation":false,"usgs":true,"family":"Wessel","given":"Zachary","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":481261,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70043237,"text":"70043237 - 2010 - Real-time decision support systems: the famine early warning system network","interactions":[],"lastModifiedDate":"2017-03-27T12:13:31","indexId":"70043237","displayToPublicDate":"2010-01-01T15:08:00","publicationYear":"2010","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Real-time decision support systems: the famine early warning system network","docAbstract":"A multi-institutional partnership, the US Agency for International Development’s Famine Early Warning System Network (FEWS NET) provides routine monitoring of climatic, agricultural, market, and socioeconomic conditions in over 20 countries. FEWS NET supports and informs disaster relief decisions that impact millions of people and involve billions of dollars. In this chapter, we focus on some of FEWS NET’s hydrologic monitoring tools, with a specific emphasis on combining “low frequency” and “high frequency” assessment tools. Low frequency assessment tools, tied to water and food balance estimates, enable us to evaluate and map long-term tendencies in food security. High frequency assessments are supported by agrohydrologic models driven by satellite rainfall estimates, such as the Water Requirement Satisfaction Index (WRSI). Focusing on eastern Africa, we suggest that both these high and low frequency approaches are necessary to capture the interaction of slow variations in vulnerability and the relatively rapid onset of climatic shocks.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Satellite rainfall applications for surface hydrology","largerWorkSubtype":{"id":4,"text":"Other Government Series"},"language":"English","publisher":"Springer","publisherLocation":"Rijeka, Croatia","doi":"10.1007/978-90-481-2915-7_17","isbn":"9789048129140; 9789048121957","usgsCitation":"Funk, C.C., and Verdin, J.P., 2010, Real-time decision support systems: the famine early warning system network, chap. of Satellite rainfall applications for surface hydrology, p. 295-320, https://doi.org/10.1007/978-90-481-2915-7_17.","productDescription":"26 p.","startPage":"295","endPage":"320","numberOfPages":"26","ipdsId":"IP-012627","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":275641,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":275640,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/978-90-481-2915-7_17"}],"country":"United States","noUsgsAuthors":false,"publicationDate":"2009-09-30","publicationStatus":"PW","scienceBaseUri":"51fa31e6e4b076c3a8d82674","contributors":{"authors":[{"text":"Funk, Christopher C. 0000-0002-9254-6718 cfunk@usgs.gov","orcid":"https://orcid.org/0000-0002-9254-6718","contributorId":721,"corporation":false,"usgs":true,"family":"Funk","given":"Christopher","email":"cfunk@usgs.gov","middleInitial":"C.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":473215,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Verdin, James P. 0000-0003-0238-9657 verdin@usgs.gov","orcid":"https://orcid.org/0000-0003-0238-9657","contributorId":720,"corporation":false,"usgs":true,"family":"Verdin","given":"James","email":"verdin@usgs.gov","middleInitial":"P.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":473214,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70199773,"text":"70199773 - 2010 - Measuring sediment accretion in early tidal marsh restoration","interactions":[],"lastModifiedDate":"2018-09-27T14:46:13","indexId":"70199773","displayToPublicDate":"2010-01-01T14:45:21","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3751,"text":"Wetlands Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Measuring sediment accretion in early tidal marsh restoration","docAbstract":"Sediment accretion is a critical indicator of initial progress in tidal marsh restoration. However, it is often difficult to measure early deposition rates, because the bottom surface is usually obscured under turbid, tidally-influenced waters. To accurately measure early sediment deposition in marshes, we developed an echosounder system consisting of a specialized acoustic profiler, differential global positioning system unit, and laptop computer mounted on a shallow-draft boat. We conducted a bathymetry at the Tubbs Setback tidal restoration site on San Pablo Bay, California, along north–south transects at 25-m intervals. Horizontal position was recorded within 1 m each second and water depth to 1 cm every 0.05 s. Bottom elevations were adjusted for tidal height with surveyed tide gages. We created detailed bathymetric maps (grid cell size: 12.5 m x 12.5 m) by interpolation with inverse distance weighting. During the third year after restoration, sediment accretion averaged 57.1 ± 1.1 cm and the estimated sediment gain was 132,900 m3. The mean difference between the elevations from the bathymetry system and the 9 sediment pins was 2.0 ± 1.0 cm. The mean difference of the intersection points of east–west and north–south survey transects was 2.1 ± 0.2 cm, which provided a measure of repeatability with changing water levels. Our echosounder system provided accurate and repeatable measurements of sediment accretion of a recently restored tidal wetland, and this system proved to be a viable tool for determining sediment deposition in marshes and assessing early restoration progress.
","language":"English","publisher":"Springer","doi":"10.1007/s11273-009-9170-6","usgsCitation":"Takekawa, J.Y., Woo, I., Athearn, N.D., Demers, S.A., Gardiner, R.J., Perry, W.M., Ganju, N., Shellenbarger, G., and Schoellhamer, D., 2010, Measuring sediment accretion in early tidal marsh restoration: Wetlands Ecology and Management, 9 p., https://doi.org/10.1007/s11273-009-9170-6.","productDescription":"9 p.","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":357856,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Pablo Bay","noUsgsAuthors":false,"publicationDate":"2010-02-11","publicationStatus":"PW","scienceBaseUri":"5c10c78de4b034bf6a7f5c2a","contributors":{"authors":[{"text":"Takekawa, John Y. 0000-0003-0217-5907 john_takekawa@usgs.gov","orcid":"https://orcid.org/0000-0003-0217-5907","contributorId":196611,"corporation":false,"usgs":true,"family":"Takekawa","given":"John","email":"john_takekawa@usgs.gov","middleInitial":"Y.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":746548,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Woo, Isa 0000-0002-8447-9236 iwoo@usgs.gov","orcid":"https://orcid.org/0000-0002-8447-9236","contributorId":2524,"corporation":false,"usgs":true,"family":"Woo","given":"Isa","email":"iwoo@usgs.gov","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":746549,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Athearn, Nicole D.","contributorId":71273,"corporation":false,"usgs":true,"family":"Athearn","given":"Nicole","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":746550,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Demers, Scott A.","contributorId":62411,"corporation":false,"usgs":true,"family":"Demers","given":"Scott","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":746551,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gardiner, Rachel J.","contributorId":174164,"corporation":false,"usgs":false,"family":"Gardiner","given":"Rachel","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":746552,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Perry, William M. 0000-0002-6180-8180 wmperry@usgs.gov","orcid":"https://orcid.org/0000-0002-6180-8180","contributorId":5124,"corporation":false,"usgs":true,"family":"Perry","given":"William","email":"wmperry@usgs.gov","middleInitial":"M.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":746553,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ganju, Neil K. 0000-0002-1096-0465 nganju@usgs.gov","orcid":"https://orcid.org/0000-0002-1096-0465","contributorId":1314,"corporation":false,"usgs":true,"family":"Ganju","given":"Neil K.","email":"nganju@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":746554,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Shellenbarger, Gregory gshellen@usgs.gov","contributorId":174805,"corporation":false,"usgs":true,"family":"Shellenbarger","given":"Gregory","email":"gshellen@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":746555,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Schoellhamer, David H. 0000-0001-9488-7340 dschoell@usgs.gov","orcid":"https://orcid.org/0000-0001-9488-7340","contributorId":631,"corporation":false,"usgs":true,"family":"Schoellhamer","given":"David H.","email":"dschoell@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":746556,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70236423,"text":"70236423 - 2010 - Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord","interactions":[],"lastModifiedDate":"2022-10-13T14:42:42.758189","indexId":"70236423","displayToPublicDate":"2010-01-01T12:21:13","publicationYear":"2010","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"seriesTitle":{"id":5696,"text":"Advances in natural and technological hazards research","active":true,"publicationSubtype":{"id":24}},"title":"Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord","docAbstract":"During the 1964 M9.2 great Alaskan earthquake, submarine-slope failures resulted in the generation of highly destructive tsunamis at Port Valdez, Alaska. A high-resolution, mini-sparker reflection profiler was used to image debris lobes, which we attribute to slope failures that occurred both during and prior to the 1964 megathrust event. In these reflection profiles, debris lobe deposits are indicated by acoustically opaque units that are separated by undisturbed parallel-layered reflectors. Near-surface debris lobes attributed to the 1964 earthquake include: (1) a debris lobe over 30 m thick that emanates from the fiord-head delta in eastern Port Valdez; and (2) debris flow lobes incorporating large, intact blocks up to 40 m high in western Port Valdez, off the Shoup Glacier moraine. In addition to the near-surface debris lobes, we imaged at least five additional debris lobe deposits buried beneath the 1964 deposit. The debris lobe directly beneath the 1964 deposit has a similar thickness and spatial distribution as the 1964 deposit. However, the older, deeper, debris lobes are thinner, less extensive, and separated by thinner sequences of parallel-layered reflectors. Glacier retreat and concomitant build-up of the fiord-head delta combined with longer time intervals between megathrust events may have resulted in more extensive delta failures and thus thicker debris lobes through time.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Submarine mass movements and their consequences","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Springer","doi":"10.1007/978-90-481-3071-9_34","usgsCitation":"Ryan, H.F., Lee, H.J., Haeussler, P.J., Alexander, C.R., and Kayen, R., 2010, Historic and paleo-submarine landslide deposits imaged beneath Port Valdez, Alaska: Implications for tsunami generation in a glacial fiord, chap. of Submarine mass movements and their consequences: Advances in natural and technological hazards research, v. 28, p. 411-421, https://doi.org/10.1007/978-90-481-3071-9_34.","productDescription":"11 p.","startPage":"411","endPage":"421","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":645,"text":"Western Coastal and Marine Geology","active":false,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":406246,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","city":"Port Valdez","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -146.700439453125,\n 61.03701223240187\n ],\n [\n -146.08108520507812,\n 61.03701223240187\n ],\n [\n -146.08108520507812,\n 61.18231505813263\n ],\n [\n -146.700439453125,\n 61.18231505813263\n ],\n [\n -146.700439453125,\n 61.03701223240187\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"28","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"editors":[{"text":"Mosher, David C.","contributorId":66118,"corporation":false,"usgs":false,"family":"Mosher","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":18105,"text":"University of New Hampshire, Durham","active":true,"usgs":false}],"preferred":false,"id":854436,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Shipp, R. C.","contributorId":35470,"corporation":false,"usgs":true,"family":"Shipp","given":"R.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":854437,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Moscardelli, Lorena","contributorId":147083,"corporation":false,"usgs":false,"family":"Moscardelli","given":"Lorena","email":"","affiliations":[],"preferred":false,"id":854438,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Chaytor, Jason 0000-0001-8135-8677 jchaytor@usgs.gov","orcid":"https://orcid.org/0000-0001-8135-8677","contributorId":140095,"corporation":false,"usgs":true,"family":"Chaytor","given":"Jason","email":"jchaytor@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":854439,"contributorType":{"id":2,"text":"Editors"},"rank":4},{"text":"Baxter, Christopher D. P.","contributorId":147084,"corporation":false,"usgs":false,"family":"Baxter","given":"Christopher","email":"","middleInitial":"D. P.","affiliations":[],"preferred":false,"id":854440,"contributorType":{"id":2,"text":"Editors"},"rank":5},{"text":"Lee, Homa J. hjlee@usgs.gov","contributorId":1021,"corporation":false,"usgs":true,"family":"Lee","given":"Homa J.","email":"hjlee@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":854441,"contributorType":{"id":2,"text":"Editors"},"rank":6},{"text":"Urgeles, Roger","contributorId":147085,"corporation":false,"usgs":false,"family":"Urgeles","given":"Roger","email":"","affiliations":[],"preferred":false,"id":854442,"contributorType":{"id":2,"text":"Editors"},"rank":7}],"authors":[{"text":"Ryan, H. F.","contributorId":18002,"corporation":false,"usgs":true,"family":"Ryan","given":"H.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":850950,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, H. J.","contributorId":190472,"corporation":false,"usgs":true,"family":"Lee","given":"H.","email":"","middleInitial":"J.","affiliations":[{"id":645,"text":"Western Coastal and Marine Geology","active":false,"usgs":true}],"preferred":false,"id":850951,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Haeussler, Peter J. 0000-0002-1503-6247 pheuslr@usgs.gov","orcid":"https://orcid.org/0000-0002-1503-6247","contributorId":503,"corporation":false,"usgs":true,"family":"Haeussler","given":"Peter","email":"pheuslr@usgs.gov","middleInitial":"J.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":850953,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Alexander, C. R.","contributorId":72729,"corporation":false,"usgs":true,"family":"Alexander","given":"C.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":850954,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kayen, Robert E. 0000-0002-0356-072X","orcid":"https://orcid.org/0000-0002-0356-072X","contributorId":261195,"corporation":false,"usgs":true,"family":"Kayen","given":"Robert E.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":850952,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70199594,"text":"70199594 - 2010 - A methodology for the assessment of unconventional (continuous) resources with an application to the Greater Natural Buttes gas field, Utah","interactions":[],"lastModifiedDate":"2018-11-29T10:42:31","indexId":"70199594","displayToPublicDate":"2010-01-01T10:59:08","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2832,"text":"Natural Resources Research","onlineIssn":"1573-8981","printIssn":"1520-7439","active":true,"publicationSubtype":{"id":10}},"title":"A methodology for the assessment of unconventional (continuous) resources with an application to the Greater Natural Buttes gas field, Utah","docAbstract":"The Greater Natural Buttes tight natural gas field is an unconventional (continuous) accumulation in the Uinta Basin, Utah, that began production in the early 1950s from the Upper Cretaceous Mesaverde Group. Three years later, production was extended to the Eocene Wasatch Formation. With the exclusion of 1100 non-productive (“dry”) wells, we estimate that the final recovery from the 2500 producing wells existing in 2007 will be about 1.7 trillion standard cubic feet (TSCF) (48.2 billion cubic meters (BCM)). The use of estimated ultimate recovery (EUR) per well is common in assessments of unconventional resources, and it is one of the main sources of information to forecast undiscovered resources. Each calculated recovery value has an associated drainage area that generally varies from well to well and that can be mathematically subdivided into elemental subareas of constant size and shape called cells. Recovery per 5-acre cells at Greater Natural Buttes shows spatial correlation; hence, statistical approaches that ignore this correlation when inferring EUR values for untested cells do not take full advantage of all the information contained in the data. More critically, resulting models do not match the style of spatial EUR fluctuations observed in nature. This study takes a new approach by applying spatial statistics to model geographical variation of cell EUR taking into account spatial correlation and the influence of fractures. We applied sequential indicator simulation to model non-productive cells, while spatial mapping of cell EUR was obtained by applying sequential Gaussian simulation to provide multiple versions of reality (realizations) having equal chances of being the correct model. For each realization, summation of EUR in cells not drained by the existing wells allowed preparation of a stochastic prediction of undiscovered resources, which range between 2.6 and 3.4 TSCF (73.6 and 96.3 BCM) with a mean of 2.9 TSCF (82.1 BCM) for Greater Natural Buttes. A second approach illustrates the application of multiple-point simulation to assess a hypothetical frontier area for which there is no production information but which is regarded as being similar to Greater Natural Buttes.
","language":"English","publisher":"Springer","doi":"10.1007/s11053-010-9127-8","usgsCitation":"Olea, R., Cook, T.A., and Coleman, J., 2010, A methodology for the assessment of unconventional (continuous) resources with an application to the Greater Natural Buttes gas field, Utah: Natural Resources Research, v. 19, no. 4, p. 237-251, https://doi.org/10.1007/s11053-010-9127-8.","productDescription":"15 p.","startPage":"237","endPage":"251","ipdsId":"IP-017861","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":357661,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Greater Natural Buttes Gas Field","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -110.08850097656249,\n 39.68182601089365\n ],\n [\n -109.0447998046875,\n 39.68182601089365\n ],\n [\n -109.0447998046875,\n 40.24179856487036\n ],\n [\n -110.08850097656249,\n 40.24179856487036\n ],\n [\n -110.08850097656249,\n 39.68182601089365\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"19","issue":"4","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2010-09-25","publicationStatus":"PW","scienceBaseUri":"5c0108d9e4b0815414cc2e0d","contributors":{"authors":[{"text":"Olea, Ricardo A. 0000-0003-4308-0808","orcid":"https://orcid.org/0000-0003-4308-0808","contributorId":47873,"corporation":false,"usgs":true,"family":"Olea","given":"Ricardo A.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":745927,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cook, Troy A.","contributorId":52519,"corporation":false,"usgs":true,"family":"Cook","given":"Troy","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":746102,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coleman, James L.","contributorId":208106,"corporation":false,"usgs":false,"family":"Coleman","given":"James L.","affiliations":[{"id":37715,"text":"Ex-USGS, now retired","active":true,"usgs":false}],"preferred":false,"id":745926,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70236314,"text":"70236314 - 2010 - Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.","interactions":[],"lastModifiedDate":"2022-09-01T15:42:10.432902","indexId":"70236314","displayToPublicDate":"2010-01-01T10:21:50","publicationYear":"2010","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.","docAbstract":"Acoustic and electrical image logs in fractured granitic rocks penetrated by U.S. Navy well 58A-10, Coso Wash, in the eastern margin of the Coso geothermal field, California, were compared to evaluate their relative ability to characterize fractures and fault rock textures and to measure stress orientations from borehole failure. Electrical image logs are sensitive to variations in mineralogy or porosity, which affect conductivity. Thus, they capture both open and healed natural fractures as well as rock foliation.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Dipmeter and borehole image log technology","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/13181288M923134","usgsCitation":"Davatzes, N.C., and Hickman, S.H., 2010, Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A., chap. of Dipmeter and borehole image log technology, v. 92, p. 259-293, https://doi.org/10.1306/13181288M923134.","productDescription":"35 p.","startPage":"259","endPage":"293","costCenters":[],"links":[{"id":406068,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Coso geothermal field","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118.01925659179688,\n 35.88682489453265\n ],\n [\n -117.75215148925781,\n 35.88682489453265\n ],\n [\n -117.75215148925781,\n 36.121236902880185\n ],\n [\n -118.01925659179688,\n 36.121236902880185\n ],\n [\n -118.01925659179688,\n 35.88682489453265\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"92","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"editors":[{"text":"Poppelreiter, M.","contributorId":296083,"corporation":false,"usgs":false,"family":"Poppelreiter","given":"M.","email":"","affiliations":[],"preferred":false,"id":850580,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Garcia-Carballido, C.","contributorId":296084,"corporation":false,"usgs":false,"family":"Garcia-Carballido","given":"C.","email":"","affiliations":[],"preferred":false,"id":850581,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Kraaijveld, M.","contributorId":296085,"corporation":false,"usgs":false,"family":"Kraaijveld","given":"M.","email":"","affiliations":[],"preferred":false,"id":850582,"contributorType":{"id":2,"text":"Editors"},"rank":3}],"authors":[{"text":"Davatzes, Nicholas C.","contributorId":138855,"corporation":false,"usgs":false,"family":"Davatzes","given":"Nicholas","email":"","middleInitial":"C.","affiliations":[{"id":12547,"text":"Temple University","active":true,"usgs":false}],"preferred":false,"id":850578,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hickman, Stephen H. 0000-0003-2075-9615 hickman@usgs.gov","orcid":"https://orcid.org/0000-0003-2075-9615","contributorId":2705,"corporation":false,"usgs":true,"family":"Hickman","given":"Stephen","email":"hickman@usgs.gov","middleInitial":"H.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":850579,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70256009,"text":"70256009 - 2010 - Establishing a nationwide baseline of historical burn-severity data to support monitoring of trends in wildfire effects and national fire policies","interactions":[],"lastModifiedDate":"2024-07-12T15:07:23.549738","indexId":"70256009","displayToPublicDate":"2010-01-01T10:05:16","publicationYear":"2010","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":32,"text":"General Technical Report","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"PNW-GTR-802","title":"Establishing a nationwide baseline of historical burn-severity data to support monitoring of trends in wildfire effects and national fire policies","docAbstract":"There is a need to provide agency leaders, elected officials, and the general public with summary information regarding the effects of large wildfires. Recently, the Wildland Fire Leadership Council (WFLC), which implements and coordinates National Fire Plan (NFP) and Federal Wildland Fire Management Policies adopted a strategy to monitor the effectiveness and effects of the National Fire Plan and the Healthy Forests Restoration Act. One component of this strategy is to assess the environmental impacts of large wildland fires and identify the trends of burn severity on all lands across the United States. To that end, WFLC has sponsored a 6-year project, Monitoring Trends in Burn Severity (MTBS), which requires the U.S. Department of Agriculture, Forest Service (USDA-FS) and the U.S. Geological Survey (USGS) to map and assess the burn severity for all large current and historical fires. Using Landsat data and the differenced Normalized Burn Ratio (dNBR) algorithm, the USGS/EROS Data Center and USDA-FS/ Remote Sensing Applications Center will map burn severity of all fires occurring from 1984 to 2010. Only fires that are greater than 500 ac in the East, and 1,000 ac in the West will be included. We anticipate mapping a total of more than 9,000 historical fires and fires that occur during the course of the study. The MTBS project will generate burn-severity data, maps, and reports, which will be available for use at local, State, and national levels to evaluate trends in burn severity and help develop and assess the effectiveness of land management decisions. Additionally, the information developed will provide a baseline from which to monitor the recovery and health of fire-affected landscapes over time. Spatial and tabular data quantifying burn severity will augment existing information used to estimate risk associated with a range of current and future resource threats. For example, fire severity data along with associated biophysical characteristics provide an analytical basis for assessing risk from invasive species as well as native insects and pathogens. All data and results will be distributed to the public via a Web interface.
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Lewis fault zone: Tectonic implications for eastern San Francisco Bay","interactions":[],"lastModifiedDate":"2018-05-01T16:11:26","indexId":"70047106","displayToPublicDate":"2010-01-01T10:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"The Mt. Lewis fault zone: Tectonic implications for eastern San Francisco Bay","docAbstract":"No abstract available","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Special report (California Geological Survey)","largerWorkSubtype":{"id":2,"text":"State or Local Government Series"},"conferenceTitle":"Third Conference on Earthquake Hazards in the Eastern San Francisco Bay Area : science, hazard, engineering and risk","language":"English","publisher":"California Geological Survey, California Dept. of Conservation","usgsCitation":"Watt, J., Ponce, D.A., Simpson, R.W., Graymer, R.W., Jachens, R.C., and Wentworth, C.M., 2010, The Mt. Lewis fault zone: Tectonic implications for eastern San Francisco Bay, 10 p.","productDescription":"10 p.","numberOfPages":"10","ipdsId":"IP-014189","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":275201,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"San Francisco","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -122.231916,37.39611 ], [ -122.231916,37.666424 ], [ -121.908313,37.666424 ], [ -121.908313,37.39611 ], [ -122.231916,37.39611 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51ee546ae4b00ffbed48f8fe","contributors":{"authors":[{"text":"Watt, Janet 0000-0002-4759-3814","orcid":"https://orcid.org/0000-0002-4759-3814","contributorId":23045,"corporation":false,"usgs":true,"family":"Watt","given":"Janet","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":481074,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ponce, David A. 0000-0003-4785-7354 ponce@usgs.gov","orcid":"https://orcid.org/0000-0003-4785-7354","contributorId":1049,"corporation":false,"usgs":true,"family":"Ponce","given":"David","email":"ponce@usgs.gov","middleInitial":"A.","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":481069,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Simpson, Robert W. simpson@usgs.gov","contributorId":1053,"corporation":false,"usgs":true,"family":"Simpson","given":"Robert","email":"simpson@usgs.gov","middleInitial":"W.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":481071,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Graymer, Russell W. 0000-0003-4910-5682 rgraymer@usgs.gov","orcid":"https://orcid.org/0000-0003-4910-5682","contributorId":1052,"corporation":false,"usgs":true,"family":"Graymer","given":"Russell","email":"rgraymer@usgs.gov","middleInitial":"W.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":481070,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Jachens, Robert C. jachens@usgs.gov","contributorId":1180,"corporation":false,"usgs":true,"family":"Jachens","given":"Robert","email":"jachens@usgs.gov","middleInitial":"C.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":481073,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Wentworth, Carl M. 0000-0003-2569-569X cwent@usgs.gov","orcid":"https://orcid.org/0000-0003-2569-569X","contributorId":1178,"corporation":false,"usgs":true,"family":"Wentworth","given":"Carl","email":"cwent@usgs.gov","middleInitial":"M.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":481072,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70042347,"text":"70042347 - 2010 - Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry","interactions":[],"lastModifiedDate":"2018-10-11T10:23:51","indexId":"70042347","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry","docAbstract":"An anomalous stable hydrogen isotopic fractionation of 4 ‰ in gaseous hydrogen has been correlated with the process of adding liquid nitrogen (LN2) to top off the dewar of a stainless-steel water trap on a gaseous hydrogen-water platinum equilibration system. Although the cause of this isotopic fractionation is unknown, its effect can be mitigated by (1) increasing the capacity of any dewars so that they do not need to be filled during a daily analytic run, (2) interspersing isotopic reference waters among unknowns, and (3) applying a linear drift correction and linear normalization to isotopic results with a program such as Laboratory Information Management System (LIMS) for Light Stable Isotopes. With adoption of the above guidelines, measurement uncertainty can be substantially improved. For example, the long-term (months to years) δ2H reproducibility (1& sigma; standard deviation) of nine local isotopic reference waters analyzed daily improved substantially from about 1‰ to 0.58 ‰. This isotopically fractionating mechanism might affect other isotope-ratio mass spectrometers in which LN2 is used as a moisture trap for gaseous hydrogen
","language":"English","publisher":"ACS Publications","publisherLocation":"Washington, D.C.","doi":"10.1021/ac101570f","usgsCitation":"Coplen, T.B., and Qi, H., 2010, Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry: Analytical Chemistry, v. 82, no. 18, p. 7849-7851, https://doi.org/10.1021/ac101570f.","productDescription":"3 p.","startPage":"7849","endPage":"7851","ipdsId":"IP-020415","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":265316,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265271,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/ac101570f"}],"country":"United States","volume":"82","issue":"18","noUsgsAuthors":false,"publicationDate":"2010-08-18","publicationStatus":"PW","scienceBaseUri":"50ebfc76e4b07f1501afcfcb","contributors":{"authors":[{"text":"Coplen, Tyler B. 0000-0003-4884-6008 tbcoplen@usgs.gov","orcid":"https://orcid.org/0000-0003-4884-6008","contributorId":508,"corporation":false,"usgs":true,"family":"Coplen","given":"Tyler","email":"tbcoplen@usgs.gov","middleInitial":"B.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":471357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Qi, Haiping 0000-0002-8339-744X haipingq@usgs.gov","orcid":"https://orcid.org/0000-0002-8339-744X","contributorId":507,"corporation":false,"usgs":true,"family":"Qi","given":"Haiping","email":"haipingq@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":471356,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70037179,"text":"70037179 - 2010 - Late Devonian glacigenic and associated facies from the central Appalachian Basin, eastern United States","interactions":[],"lastModifiedDate":"2012-03-12T17:22:07","indexId":"70037179","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Late Devonian glacigenic and associated facies from the central Appalachian Basin, eastern United States","docAbstract":"Late Devonian strata in the eastern United States are generally considered as having been deposited under warm tropical conditions. However, a stratigraphically restricted Late Devonian succession of diamictite- mudstonesandstone within the Spechty Kopf and Rockwell Formations that extends for more than 400 km along depositional strike within the central Appalachian Basin may indicate other wise. This lithologic association unconformably overlies the Catskill Formation, where a 3- to 5-m-thick interval of deformed strata occurs immediately below the diamictite strata. The diamictite facies consists of several subfacies that are interpreted to be subglacial, englacial, supraglacial meltout, and resedimented deposits. The mudstone facies that overlies the diamictite consists of subfacies of chaotically bedded, clast-poor mudstone, and laminated mudstone sub facies that represent subaqueous proximal debris flows and distal glaciolacustrine rhythmites or varvites, respectively. The pebbly sandstone facies is interpreted as proglacial braided outwash deposits that both preceded glacial advance and followed glacial retreat. Both the tectonic and depositional frameworks suggest that the facies were deposited in a terrestrial setting within the Appalachian foreland basin during a single glacial advance and retreat. Regionally, areas that were not covered by ice were subject to increased rainfall as indicated by wet-climate paleosols. River systems eroded deeper channels in response to sea-level drop during glacial advance. Marine facies to the west contain iceborne dropstone boulders preserved within contemporaneous units of the Cleveland Shale Member of the Ohio Shale.The stratigraphic interval correlative with sea-level drop, climate change, and glacigenic succession represents one of the Appalachian Basin's most prolific oil-and gas-producing intervals and is contemporaneous with a global episode of sea-level drop responsible for the deposition of the Hangenberg Shale/Sandstone of Europe. This interval records the Hangenberg biotic crisis near the Devonian-Carboniferous boundary. ?? 2009 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/B26556.1","issn":"00167606","usgsCitation":"Brezinski, D., Cecil, C.B., and Skema, V., 2010, Late Devonian glacigenic and associated facies from the central Appalachian Basin, eastern United States: Geological Society of America Bulletin, v. 122, no. 1-2, p. 265-281, https://doi.org/10.1130/B26556.1.","startPage":"265","endPage":"281","numberOfPages":"17","costCenters":[],"links":[{"id":217110,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/B26556.1"},{"id":245027,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"122","issue":"1-2","noUsgsAuthors":false,"publicationDate":"2009-09-25","publicationStatus":"PW","scienceBaseUri":"505a44dfe4b0c8380cd66e6c","contributors":{"authors":[{"text":"Brezinski, D. K.","contributorId":39010,"corporation":false,"usgs":true,"family":"Brezinski","given":"D. K.","affiliations":[],"preferred":false,"id":459770,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cecil, C. B. 0000-0002-9032-1689","orcid":"https://orcid.org/0000-0002-9032-1689","contributorId":62204,"corporation":false,"usgs":true,"family":"Cecil","given":"C.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":459771,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Skema, V.W.","contributorId":23339,"corporation":false,"usgs":true,"family":"Skema","given":"V.W.","email":"","affiliations":[],"preferred":false,"id":459769,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}