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,{"id":60890,"text":"mf2331 - 2001 - Geologic map of the Silt quadrangle, Garfield County, Colorado","interactions":[{"subject":{"id":31868,"text":"ofr94696 - 1994 - Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado","indexId":"ofr94696","publicationYear":"1994","noYear":false,"title":"Preliminary geologic map of the Silt Quadrangle, Garfield County, Colorado"},"predicate":"SUPERSEDED_BY","object":{"id":60890,"text":"mf2331 - 2001 - Geologic map of the Silt quadrangle, Garfield County, Colorado","indexId":"mf2331","publicationYear":"2001","noYear":false,"title":"Geologic map of the Silt quadrangle, Garfield County, Colorado"},"id":1}],"lastModifiedDate":"2022-08-17T21:45:34.639744","indexId":"mf2331","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2331","title":"Geologic map of the Silt quadrangle, Garfield County, Colorado","docAbstract":"New 1:24,000-scale geologic mapping in the Silt 7.5' quadrangle, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of the stratigraphy, structure, and geologic hazards in the area of the southwest flank of the White River uplift, the Grand Hogback, and the eastern Piceance Basin. The Wasatch Formation was subdivided into three formal members, the Shire, Molina, and Atwell Gulch Members. Also a sandstone unit within the Shire Member was broken out. The Mesaverde Group consists of the upper Williams Fork Formation and the lower Iles Formation. Members for the Iles Formation consist of the Rollins Sandstone, the Cozzette Sandstone, and the Corcoran Sandstone Members. The Cozzette and Corcoran Sandstone Members were mapped as a combined unit. Only the upper part of the Upper Member of the Mancos Shale is exposed in the quadrangle. From the southwestern corner of the map area toward the northwest, the unfaulted early Eocene to Paleocene Wasatch Formation and underlying Mesaverde Group gradually increase in dip to form the Grand Hogback monocline that reaches 45-75 degree dips to the southwest (section A-A'). The shallow west-northwest-trending Rifle syncline separates the northern part of the quadrangle from the southern part along the Colorado River. Geologic hazards in the map area include erosion, expansive soils, and flooding. Erosion includes mass wasting, gullying, and piping. Mass wasting involves any rock or surficial material that moves downslope under the influence of gravity, such as landslides, debris flows, or rock falls, and is generally more prevalent on steeper slopes. Locally, where the Grand Hogback is dipping greater than 60 degrees and the Wasatch Formation has been eroded, leaving sandstone slabs of the Mesa Verde Group unsupported over vertical distances as great as 500 m, the upper part of the unit has collapsed in landslides, probably by a process of beam-buckle failure. In the source area of these landslides strata are overturned and dip shallowly to the northeast. Landslide deposits now armor Pleistocene pediment surfaces and extend at least 1 km into Cactus Valley. Gullying and piping generally occur on more gentle slopes. Expansive soils and expansive bedrock are those unconsolidated materials or rocks that swell when wet and shrink when dry. Most floods are restricted to low-lying areas. Several gas-producing wells extract methane from coals from the upper part of the Iles Formation.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/mf2331","usgsCitation":"Shroba, R., and Scott, R.B., 2001, Geologic map of the Silt quadrangle, Garfield County, Colorado: U.S. Geological Survey Miscellaneous Field Studies Map 2331, HTML Document, https://doi.org/10.3133/mf2331.","productDescription":"HTML Document","costCenters":[],"links":[{"id":183590,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":110170,"rank":700,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36784.htm","linkFileType":{"id":5,"text":"html"},"description":"36784"},{"id":6024,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/mf/2001/mf-2331/","linkFileType":{"id":5,"text":"html"}}],"scale":"24000","country":"United States","state":"Colorado","county":"Garfield","otherGeospatial":"Silt quadrangle","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -107.75,\n              39.5\n            ],\n            [\n              -107.625,\n              39.5\n            ],\n            [\n              -107.625,\n              39.625\n            ],\n            [\n              -107.75,\n              39.625\n            ],\n            [\n              -107.75,\n              39.5\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae1e4b07f02db688837","contributors":{"authors":[{"text":"Shroba, R. R.","contributorId":44133,"corporation":false,"usgs":true,"family":"Shroba","given":"R. R.","affiliations":[],"preferred":false,"id":264561,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Scott, R. B.","contributorId":13638,"corporation":false,"usgs":false,"family":"Scott","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":264560,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70164480,"text":"70164480 - 2001 - Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers","interactions":[],"lastModifiedDate":"2016-02-08T09:13:49","indexId":"70164480","displayToPublicDate":"2001-04-01T10:15:00","publicationYear":"2001","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers","docAbstract":"<p>Eleven streams in the Wapsipinicon, Cedar, Iowa, and Skunk River basins in eastern Iowa were sampled monthly from March 1996 through September 1998 to assess the occurrence, distribution, and transport of nitrogen, phosphorus, and suspended sediment as part of the U.S. Geological Survey's National Water-Quality Assessment Program. At least one form of dissolved nitrogen and phosphorus was detected in every sample collected. Nitrate accounted for 92 percent of the dissolved nitrogen. About 22 percent of the samples contained nitrate that exceeded the U.S. Environmental Protection Agency's Maximum Contaminant Level of 10 milligrams per liter (mg/L) as nitrogen in drinking water. The median concentration of total nitrogen for surface water in the study area was 7.2 mg/L. Dissolved phosphorus was predominately in the form of orthophosphate. The median total phosphorus concentration for the study area was 0.22 mg/L. About 75 percent of the total phosphorus concentrations exceeded the U.S. Environmental Protection Agency recommended total phosphorus concentration of 0.10 mg/L or less to minimize algal growth in streams not discharging directly into lakes or impoundments. Median suspended-sediment concentration for the study area was 82 mg/L.</p>\n<p>Nitrogen, phosphorus, and suspended-sediment concentrations varied annually and seasonally. Nitrogen, phosphorus, and suspended-sediment concentrations increased each year of the study due to increased precipitation and runoff. Concentrations were typically higher in the spring after fertilizer application and runoff. In winter, nitrogen concentrations typically increased when there was little instream assimilation by aquatic plants and algae. Nitrogen and phosphorus concentrations decreased in late summer when there was less runoff and instream assimilation of nitrogen and phosphorus by aquatic plants and algae was high. Suspended-sediment concentrations were highest in early summer during runoff and lowest in January when there was ice cover with very little overland flow contributing to rivers and streams.</p>\n<p>Streams draining small- to medium-sized watersheds that have uniform land use and geology had significantly (p &lt; 0.05) higher total dissolved-nitrogen concentrations (median, 8.2 mg/L) than did samples from large rivers (median, 6.2 mg/L) that drain basins with mixed land use and geology. Samples from large rivers typically had significantly (p&lt; 0.05) higher total phosphorus and suspended-sediment concentrations than did samples from small rivers and streams.</p>\n<p>Concentrations varied between drainage basins due to land use and physiography. Basins that are located in areas with a higher percentage of row-crop agriculture typically had samples with higher nitrogen concentrations than did basins with less row-crop agriculture. In addition, basins that drain the Southern Iowa Drift Plain and the Des Moines Lobe typically had samples with higher total phosphorus and suspended-sediment concentrations than did basins that drain other landform regions.</p>\n<p>Total nitrogen and total phosphorus loads were typically proportional to the size of the drainage basin. Total nitrogen loads increased each year from 1996 through 1998 in conjunction with increased concentrations and runoff. However, total phosphorus loads in the Skunk River Basin decreased in 1997 due to less runoff. Total phosphorus loads followed the same pattern as total nitrogen loads with increases in 1998. Total nitrogen and total phosphorus loads varied seasonally and the highest loads typically occurred in early spring and summer after fertilizer application and runoff. Loads were lowest in January and September when there was little runoff to transport nitrogen and phosphorus to the rivers and streams.</p>\n<p>Total nitrogen loads contributed to the Mississippi River from the Eastern Iowa Basins during 1996, 1997, and 1998 were 97,000, 120,000, and 230,000 metric tons respectively. Total phosphorus loads contributed to the Mississippi River from the Eastern Iowa Basins during 1996, 1997, and 1998 were 6,900, 4,600, and 8,800 metric tons, respectively. The highest nitrogen and phosphorus yields typically occurred in streams draining small watersheds that were dominated by a single land use and geology. Sampling sites located in drainage basins with higher row-crop percentage typically had higher nitrogen and phosphorus yields. Sites that were located in the Des Moines Lobe and the Southern Iowa Drift Plain typically had higher phosphorus yields probably due to more erodible soils and steeper slopes.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"State and Federal Water Initiatives Conference","conferenceDate":"March 5-7. 2001","conferenceLocation":"Ames, IA","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Becher, K., 2001, Occurrence, distribution, and transport of nutrients in Eastern Iowa Rivers, <i>in</i> Proceedings of the Agriculture and the Environment: State and Federal Water Initiatives Conference, Ames, IA, March 5-7. 2001, p. 83-84.","productDescription":"2 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,{"id":67545,"text":"i2740 - 2001 - Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado","interactions":[],"lastModifiedDate":"2023-01-17T19:29:09.263641","indexId":"i2740","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2740","subseriesTitle":"GIS","title":"Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado","docAbstract":"New 1:24,000-scale geologic mapping in the Colorado National Monument Quadrangle and adjacent areas, in support of the USGS Western Colorado I-70 Corridor Cooperative Geologic Mapping Project, provides new interpretations of and data for the stratigraphy, structure, geologic hazards in the area from the Colorado River in Grand Valley onto the Uncompahgre Plateau. The plateau drops abruptly along northwest-trending structures toward the northeast 800 m to the Redlands area and the Colorado River in Grand Valley. In addition to common alluvial and colluvial deposits, surficial deposits include Holocene and late Pleistocene charcoal-bearing valley-fill deposits, late to middle Pleistocene river-gravel terrace deposits, Holocene to middle Pleistocene younger, intermediate, and old fan-alluvium deposits, late to middle Pleistocene local gravel deposits, Holocene to late Pleistocene rock-fall deposits, Holocene to middle Pleistocene young and old landslide deposits, Holocene to late Pleistocene sheetwash deposits and eolian deposits, and Holocene Cienga-type deposits. Only the lowest part of the Upper Cretaceous Mancos Shale is exposed in the map area near the Colorado River. The Upper and Lower? Cretaceous Dakota Formation and the Lower Cretaceous Burro Canyon Formation form resistant dipslopes in the Grand Valley and a prominent ridge on the plateau. Less resistant strata of the Upper Jurassic Morrison Formation consisting of the Brushy Basin, Salt Wash, and Tidwell Members form slopes on the plateau and low areas below the mountain front of the plateau. The Middle Jurassic Wanakah Formation nomenclature replaces the previously used Summerville Formation. Because an upper part of the Middle Jurassic Entrada Formation is not obviously correlated with strata found elsewhere, it is therefore not formally named; however, the lower rounded cliff former Slickrock Member is clearly present. The Lower Jurassic silica-cemented Kayenta Formation forms the cap rock for the Lower Jurassic carbonate-cemented Wingate Sandstone, which forms the impressive cliffs of the monument. The Upper Triassic Chinle Formation was deposited on the eroded and weathered Middle Proterozoic meta-igneous gneiss, pegmatite dikes, and migmatitic gneiss. Structurally the area is deceptively challenging. Nearly flat-lying strata on the plateau are folded by northwest-trending fault-propagation folds into at least two S-shaped folds along the mountain front of the plateau. Strata under Grand Valley dip at about 6 degrees to the northeast. In the absence of local evidence, the uplifted plateau is attributed to Laramide deformation by dated analogous structures elsewhere in the Colorado Plateau. The major exposed fault records high-angle reverse relationships in the basement rocks but dissipates strain as a triangular zone of distributed microfractures and cataclastic flow into overlying Mesozoic strata that absorb the fault strain, leaving only folds. Evidence for younger, probably late Pliocene or early Pleistocene, uplift does exist at the antecedent Unaweep Canyon south and east of the map area. To what degree this younger deformation affected the map area is unknown. Several geologic hazards affect the area. Middle and late Pleistocene landslides involving the smectite-bearing Brushy Basin Member of the Morrison Formation are extensive on the plateau and common in the Redlands below the plateau. Expansive clay in the Brushy Basin and other strata create foundation stability problems for roads and homes. Flash floods create a serious hazard to people on foot in narrow canyons in the monument and to homes close to water courses downstream from narrow restrictions close to the monument boundary.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i2740","usgsCitation":"Scott, R.B., Harding, A.E., Hood, W.C., Cole, R.D., Livaccari, R.F., Johnson, J.B., Shroba, R.R., and Dickerson, R.P., 2001, Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado (Version 1.0): U.S. Geological Survey IMAP 2740, Report: iv, 40 p.; 1 Plate: 56.00 x 39.50 inches; Metadata, https://doi.org/10.3133/i2740.","productDescription":"Report: iv, 40 p.; 1 Plate: 56.00 x 39.50 inches; Metadata","costCenters":[],"links":[{"id":110180,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_38261.htm","linkFileType":{"id":5,"text":"html"},"description":"38261"},{"id":189086,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/2740/report-thumb.jpg"},{"id":91696,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/2740/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":91697,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/imap/2740/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":6157,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/i-2740/","linkFileType":{"id":5,"text":"html"}}],"scale":"24000","country":"United States","state":"Colorado","county":"Mesa County","otherGeospatial":"Colorado National Monument","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -108.756,\n              38.976\n            ],\n            [\n              -108.756,\n              39.125\n            ],\n            [\n              -108.621,\n              39.125\n            ],\n            [\n              -108.621,\n              38.976\n            ],\n            [\n              -108.756,\n              38.976\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b12e4b07f02db6a2a3a","contributors":{"authors":[{"text":"Scott, Robert B. rbscott@usgs.gov","contributorId":766,"corporation":false,"usgs":true,"family":"Scott","given":"Robert","email":"rbscott@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":276629,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harding, Anne E.","contributorId":106554,"corporation":false,"usgs":true,"family":"Harding","given":"Anne","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":276636,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hood, William C.","contributorId":100946,"corporation":false,"usgs":true,"family":"Hood","given":"William","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":276635,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cole, Rex D.","contributorId":50979,"corporation":false,"usgs":true,"family":"Cole","given":"Rex","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":276632,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Livaccari, Richard F.","contributorId":65548,"corporation":false,"usgs":true,"family":"Livaccari","given":"Richard","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":276634,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johnson, James B.","contributorId":55088,"corporation":false,"usgs":true,"family":"Johnson","given":"James","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":276633,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Shroba, Ralph R. 0000-0002-2664-1813 rshroba@usgs.gov","orcid":"https://orcid.org/0000-0002-2664-1813","contributorId":1266,"corporation":false,"usgs":true,"family":"Shroba","given":"Ralph","email":"rshroba@usgs.gov","middleInitial":"R.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":276630,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Dickerson, Robert P.","contributorId":6461,"corporation":false,"usgs":true,"family":"Dickerson","given":"Robert","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":276631,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":4808,"text":"fs01201 - 2001 - Some Facts About Asbestos","interactions":[],"lastModifiedDate":"2012-02-02T00:05:44","indexId":"fs01201","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"012-01","title":"Some Facts About Asbestos","docAbstract":"For information on historic asbestos mines, historic prospects and natural asbestos occurrences in the U.S., see: \r\nEastern U.S. ---> Open-File Report 2005-1189 (http://pubs.usgs.gov/of/2005/1189/); \r\nCentral U.S. ---> Open-File Report 2006-1211 (http://pubs.usgs.gov/of/2006/1211/); \r\nRocky Mountain States ---> Open-File Report 2007-1182 (http://pubs.usgs.gov/of/2007/1182/); \r\nSouthwest U.S. ---> Open-File Report 2008-1095 (http://pubs.usgs.gov/of/2008/1095/).\r\nFor commodity statistics and information see: http://minerals.usgs.gov/minerals/pubs/commodity/asbestos/","language":"ENGLISH","publisher":"U.S. Geological Survey","doi":"10.3133/fs01201","usgsCitation":"Virta, R., 2001, Some Facts About Asbestos ( *This report has been withdrawn.*): U.S. Geological Survey Fact Sheet 012-01, 4 p. , https://doi.org/10.3133/fs01201.","productDescription":"4 p. ","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":139673,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"edition":" *This report has been withdrawn.*","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e478fe4b07f02db48a366","contributors":{"authors":[{"text":"Virta, R.L.","contributorId":39357,"corporation":false,"usgs":true,"family":"Virta","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":149814,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":31173,"text":"ofr00376 - 2001 - Geologic map and database of the Roseburg 30' x 60' quadrangle, Douglas and Coos Counties, Oregon","interactions":[],"lastModifiedDate":"2023-06-27T13:50:44.822765","indexId":"ofr00376","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2001","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":"2000-376","title":"Geologic map and database of the Roseburg 30' x 60' quadrangle, Douglas and Coos Counties, Oregon","docAbstract":"The Roseburg 30' x 60' Quadrangle covers the southeastern margin of the Oregon Coast Range and its tectonic boundary with Mesozoic terranes of the Klamath Mountains (see figures 1 and 2 in pamphlet, also shown on map sheet). The geologic framework of the Roseburg area was established by the pioneering work of Diller (1898), Wells and Peck, (1961) and Ewart Baldwin (1974) and his students (see figure 3 in pamphlet, also shown on map sheet). Baldwin and his students focussed on the history of the Eocene Tyee basin, where the sediments lap across the tectonic boundary with the Mesozoic terranes and record the accretion of the Coast Range basement to the continent. Others have examined the sedimentary fill of the Tyee basin in detail, recognizing the deep marine turbidite facies of the Tyee Formation (Snavely and others, 1964) and proposing several models for the Eocene evolution of the forearc basin (Heller and Ryberg, 1983; Chan and Dott, 1983; Heller and Dickinson, 1985; Molenaar, 1985; see Ryu and others, 1992 for a comprehensive summary). Along the eastern margin of the quadrangle, both the Tyee basin and the Klamath terranes are overlain by Eocene volcanic rocks of the Western Cascade arc (Walker and MacLeod, 1991).\n\nThe thick Eocene sedimentary sequence of the Tyee basin has significant oil and gas potential (Armentrout and Suek, 1985; Gautier and others, 1993; Ryu and others, 1996). Although 13 deep test wells have been drilled in the Roseburg quadrangle (see figure 2 and table 1 in pamphlet, also shown on map sheet), exploration to date has been hampered by an incomplete understanding of the basin�s tectonic setting and evolution. In response, the Oregon Department of Geology and Mineral Industries (DOGAMI) initiated a five year assessment of the oil and gas potential of the Tyee basin.\n\nThis map is a product of a cooperative effort by the U. S. Geological Survey, Oregon State University, and DOGAMI to systematically map the sedimentary facies and structure of the Tyee basin. New geologic mapping of twenty-eight 7.5' quadrangles is summarized on the map (see figure 3, also shown on map sheet), and the digital database contains geologic information suitable for both 1:100K and 1:24K scale analysis. DOGAMI has published a compilation and synthesis of previous mapping (Niem and Niem, 1990), a basin-wide sequence stratigraphic model and correlations (Ryu and others, 1992), and a report on the oil and gas potential (Ryu and others, 1996). Readers interested in the oil and gas potential of the Roseburg quadrangle should use the map in combination with Ryu and others (1996) to address specific stratigraphic units and structural plays.\n\nStratigraphic terminology for the Tyee basin adopts the type sections, formation names, and framework of Ryu and others (1992, 1996), which were developed concurrently with the mapping and are recognized throughout the basin. For detailed discussion of nomenclature, type sections, lithology, thickness and distribution, age, contact relationships, and depositional environment of stratigraphic units, the reader is referred to Ryu and others (1992). In this report we focus on the spatial, temporal, and structural relationships between units revealed by geologic mapping. Map unit ages (see figure 4 in pamphlet, also shown on map sheeet) are adjusted slightly from Ryu and others (1992, 1996) to fit new coccolith age determinations (D. Bukry, cited in pamphlet), paleomagnetic polarity data (Simpson, 1977 and new data cited in pamphlet), and the time scale of Berggren and others (1995).","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr00376","usgsCitation":"Wells, R., Jayko, A.S., Niem, A.R., Black, G., Wiley, T., Baldwin, E., Molenaar, K.M., Wheeler, K., DuRoss, C., and Givler, R., 2001, Geologic map and database of the Roseburg 30' x 60' quadrangle, Douglas and Coos Counties, Oregon: U.S. Geological Survey Open-File Report 2000-376, Report: 55 p., 3 ReadMe files, 2 Plates: 49.09 x 31.30 inches and 43.89 33.06 inches, https://doi.org/10.3133/ofr00376.","productDescription":"Report: 55 p., 3 ReadMe files, 2 Plates: 49.09 x 31.30 inches and 43.89 33.06 inches","numberOfPages":"55","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":161054,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr00376.png"},{"id":397740,"rank":10,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_34069.htm","linkFileType":{"id":5,"text":"html"}},{"id":281852,"rank":3,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0376/rbofrps.tar.gz","linkFileType":{"id":6,"text":"zip"}},{"id":281851,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2000/0376/rbofr.tar.gz","linkFileType":{"id":6,"text":"zip"}},{"id":281845,"rank":4,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0376/pdf/rb_geol.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":281846,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0376/pdf/rb_sh2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":281847,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2000/0376/pdf/rb_sh1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":281848,"rank":7,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2000/0376/rb_readme.txt","linkFileType":{"id":2,"text":"txt"}},{"id":281849,"rank":8,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2000/0376/pdf/rb_readme.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":281850,"rank":9,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2000/0376/rb_readme.doc"},{"id":2679,"rank":11,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/0376/","linkFileType":{"id":5,"text":"html"}}],"scale":"100000","datum":"National Geodetic Datum of 1929","country":"United States","state":"Oregon","county":"Coos County, Douglas County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.0,43.0 ], [ -124.0,43.5 ], [ -123.0,43.5 ], [ -123.0,43.0 ], [ -124.0,43.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a49cc","contributors":{"authors":[{"text":"Wells, Ray E. 0000-0002-7796-0160 rwells@usgs.gov","orcid":"https://orcid.org/0000-0002-7796-0160","contributorId":2692,"corporation":false,"usgs":true,"family":"Wells","given":"Ray E.","email":"rwells@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":205216,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jayko, A. S. 0000-0002-7378-0330","orcid":"https://orcid.org/0000-0002-7378-0330","contributorId":18011,"corporation":false,"usgs":true,"family":"Jayko","given":"A.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":205218,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Niem, A. R.","contributorId":54984,"corporation":false,"usgs":true,"family":"Niem","given":"A.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":205221,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Black, G.","contributorId":6494,"corporation":false,"usgs":true,"family":"Black","given":"G.","email":"","affiliations":[],"preferred":false,"id":205217,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wiley, T.","contributorId":55871,"corporation":false,"usgs":true,"family":"Wiley","given":"T.","affiliations":[],"preferred":false,"id":205222,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Baldwin, E.","contributorId":30260,"corporation":false,"usgs":true,"family":"Baldwin","given":"E.","email":"","affiliations":[],"preferred":false,"id":205219,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Molenaar, K. M.","contributorId":75591,"corporation":false,"usgs":true,"family":"Molenaar","given":"K.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":205223,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wheeler, K.L.","contributorId":48181,"corporation":false,"usgs":true,"family":"Wheeler","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":205220,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"DuRoss, C. B.","contributorId":86003,"corporation":false,"usgs":true,"family":"DuRoss","given":"C. B.","affiliations":[],"preferred":false,"id":205225,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Givler, R. W.","contributorId":78782,"corporation":false,"usgs":true,"family":"Givler","given":"R. W.","affiliations":[],"preferred":false,"id":205224,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70243315,"text":"70243315 - 2001 - Coastal-zone hazard maps and recommendations: Eastern Puerto Rico","interactions":[],"lastModifiedDate":"2026-04-20T15:39:12.218808","indexId":"70243315","displayToPublicDate":"2001-03-01T11:01:06","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1541,"text":"Environmental Geosciences","active":true,"publicationSubtype":{"id":10}},"title":"Coastal-zone hazard maps and recommendations: Eastern Puerto Rico","docAbstract":"<p>A series of coastal zone hazard maps cover the area impacted by Hurricane Hugo (1989) in eastern Puerto Rico. The mapping strategy was to develop a tool for quick visualization of multiple hazards for use by coastal planners, managers, property owners, and potential property owners. The Puerto Rico shoreline is heavily developed in places and also highly compartmentalized in terms of shoreline types, geology, and adjacent shelf conditions. Hazards such as coastal erosion, storm surge, riverine flooding, landsliding, and seismic impact also may be compartmentalized. From a management perspective, resources therefore can be allocated on a compartment-by-compartment basis.</p><p>Six types of hazards were considered in this investigation: (1) shoreline-setting hazards (long-term coastal problems), (2) marine hazards (short-term impacts of coastal storms), (3) earthquake and slope hazards (ground shaking, landslides, and liquefaction), (4) riverine hazards (historical floods), (5) development hazards (high-density development at risk or lowdensity development in extreme-hazard settings), and (6) engineering hazards (special cases in which shoreline engineering projects such as breakwaters or sand mining have significant detrimental effects on portions of the shoreline). Shoreline segments were ranked as being at extreme, high, moderate, or low risk, depending on the number of hazards present within that segment. These rankings are likely to change, gradually over decades with natural coastal evolution, more rapidly as human development infringes on the coastal zone, or in an instant during a severe storm. The hazard maps provide a basis for hazard mitigation and management recommendations.</p>","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1046/j.1526-0984.2001.008001038.x","usgsCitation":"Bush, D.M., Richmond, B.M., and Neal, W., 2001, Coastal-zone hazard maps and recommendations: Eastern Puerto Rico: Environmental Geosciences, v. 8, no. 1, p. 38-60, https://doi.org/10.1046/j.1526-0984.2001.008001038.x.","productDescription":"23 p.","startPage":"38","endPage":"60","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":416819,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Puerto Rico","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -66.33547990983809,\n              18.492484792946584\n            ],\n            [\n              -66.33547990983809,\n              17.997058709848986\n            ],\n            [\n              -65.25594875041435,\n              17.997058709848986\n            ],\n            [\n              -65.25594875041435,\n              18.492484792946584\n            ],\n            [\n              -66.33547990983809,\n              18.492484792946584\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"8","issue":"1","noUsgsAuthors":false,"publicationDate":"2001-03-01","publicationStatus":"PW","contributors":{"authors":[{"text":"Bush, David M.","contributorId":98658,"corporation":false,"usgs":true,"family":"Bush","given":"David","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":872007,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Richmond, Bruce M. 0000-0002-0056-5832 brichmond@usgs.gov","orcid":"https://orcid.org/0000-0002-0056-5832","contributorId":2459,"corporation":false,"usgs":true,"family":"Richmond","given":"Bruce","email":"brichmond@usgs.gov","middleInitial":"M.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":872008,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Neal, William J.","contributorId":304957,"corporation":false,"usgs":false,"family":"Neal","given":"William J.","affiliations":[],"preferred":false,"id":872009,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70226651,"text":"pp1603G - 2001 - Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia","interactions":[{"subject":{"id":70226651,"text":"pp1603G - 2001 - Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia","indexId":"pp1603G","publicationYear":"2001","noYear":false,"chapter":"G","title":"Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":1}],"isPartOf":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"lastModifiedDate":"2021-12-01T17:56:30.538075","indexId":"pp1603G","displayToPublicDate":"2001-02-01T11:46:22","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1603","chapter":"G","title":"Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1603G","usgsCitation":"Edwards, L.E., 2001, Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia: U.S. Geological Survey Professional Paper 1603, Report: iv, 25 p.; 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,{"id":70226689,"text":"pp1603I - 2001 - Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia","interactions":[{"subject":{"id":70226689,"text":"pp1603I - 2001 - Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia","indexId":"pp1603I","publicationYear":"2001","noYear":false,"chapter":"I","title":"Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":1}],"isPartOf":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"lastModifiedDate":"2021-12-03T14:56:10.576541","indexId":"pp1603I","displayToPublicDate":"2001-02-01T08:51:28","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1603","chapter":"I","title":"Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1603I","usgsCitation":"U.S. Geological Survey, 2001, Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia: U.S. Geological Survey Professional Paper 1603, Report: iii, 13 p.; 1 Plate: 8.50 × 11.00 inches, https://doi.org/10.3133/pp1603I.","productDescription":"Report: iii, 13 p.; 1 Plate: 8.50 × 11.00 inches","costCenters":[],"links":[{"id":392444,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":392443,"rank":1,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/pp/p1603/p1603i/plate1.pdf"}],"country":"United States","state":"Georgia","county":"Burke County, Screven County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.43890380859375,\n              32.85421076375021\n            ],\n            [\n              -81.5020751953125,\n              32.95797741405952\n            ],\n            [\n              -81.49658203125,\n              33.01557297778958\n            ],\n            [\n              -81.63116455078124,\n              33.09614359735857\n            ],\n            [\n              -81.78771972656249,\n              33.20652045176062\n            ],\n            [\n              -81.9085693359375,\n              33.3442960191357\n            ],\n            [\n              -82.034912109375,\n              33.32593850874471\n            ],\n            [\n              -82.06512451171875,\n              33.26624989076275\n            ],\n            [\n              -81.95526123046875,\n              33.09384260312052\n            ],\n            [\n              -81.68609619140624,\n              32.88189375925038\n            ],\n            [\n              -81.5570068359375,\n              32.78034721066307\n            ],\n            [\n              -81.441650390625,\n              32.76649095995108\n            ],\n            [\n              -81.419677734375,\n              32.80574473290688\n            ],\n            [\n              -81.43890380859375,\n              32.85421076375021\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW"}
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      20.891532033244342\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"72","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58259564e4b01fad86db2429","contributors":{"authors":[{"text":"Berlin, Kim E.","contributorId":70522,"corporation":false,"usgs":true,"family":"Berlin","given":"Kim","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":653555,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simon, John C.","contributorId":71673,"corporation":false,"usgs":true,"family":"Simon","given":"John","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":653556,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pratt, Thane K. tkpratt@usgs.gov","contributorId":5495,"corporation":false,"usgs":true,"family":"Pratt","given":"Thane","email":"tkpratt@usgs.gov","middleInitial":"K.","affiliations":[{"id":5049,"text":"Pacific Islands Ecosys Research Center","active":true,"usgs":true}],"preferred":true,"id":653557,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baker, Paul E.","contributorId":176810,"corporation":false,"usgs":false,"family":"Baker","given":"Paul","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":653558,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kowalsky, James R.","contributorId":54707,"corporation":false,"usgs":true,"family":"Kowalsky","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":653559,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","interactions":[{"subject":{"id":70226620,"text":"pp1603A - 2001 - Stratigraphy and depositional environments of sediments from five cores from Screven and Burke Counties, Georgia","indexId":"pp1603A","publicationYear":"2001","noYear":false,"chapter":"A","title":"Stratigraphy and depositional environments of sediments from five cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":1},{"subject":{"id":70226644,"text":"pp1603C - 2001 - Palynomorph biostratigraphy and paleoecology of Upper Cretaceous sediments from four cores from Screven and Burke Counties, Georgia","indexId":"pp1603C","publicationYear":"2001","noYear":false,"chapter":"C","title":"Palynomorph biostratigraphy and paleoecology of Upper Cretaceous sediments from four cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":2},{"subject":{"id":70226645,"text":"pp1603B - 2001 - Overview of the biostratigraphy and paleoecology of sediments from five cores from Screven and Burke Counties, Georgia","indexId":"pp1603B","publicationYear":"2001","noYear":false,"chapter":"B","title":"Overview of the biostratigraphy and paleoecology of sediments from five cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":3},{"subject":{"id":70226646,"text":"pp1603D - 2001 - Late Campanian (Zone CC22) coccoliths from the Millhaven Core, Screven County, Georgia","indexId":"pp1603D","publicationYear":"2001","noYear":false,"chapter":"D","title":"Late Campanian (Zone CC22) coccoliths from the Millhaven Core, Screven County, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":4},{"subject":{"id":70226647,"text":"pp1603E - 2001 - Ostracode biostratigraphy of Upper Campanian (Cretaceous) marine sediments from the Millhaven core, Screven County, Georgia","indexId":"pp1603E","publicationYear":"2001","noYear":false,"chapter":"E","title":"Ostracode biostratigraphy of Upper Campanian (Cretaceous) marine sediments from the Millhaven core, Screven County, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":5},{"subject":{"id":70226648,"text":"pp1603F - 2001 - Calcareous nannofossil biostratigraphy of Cenozoic sediments from the Millhaven core, Screven County, Georgia","indexId":"pp1603F","publicationYear":"2001","noYear":false,"chapter":"F","title":"Calcareous nannofossil biostratigraphy of Cenozoic sediments from the Millhaven core, Screven County, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":6},{"subject":{"id":70226651,"text":"pp1603G - 2001 - Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia","indexId":"pp1603G","publicationYear":"2001","noYear":false,"chapter":"G","title":"Dinocyst biostratigraphy of Tertiary sediments from five cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":7},{"subject":{"id":70226687,"text":"pp1603H - 2001 - Pollen biostratigraphy of Lower Tertiary sediments from five cores from Screven and Burke Counties, Georgia","indexId":"pp1603H","publicationYear":"2001","noYear":false,"chapter":"H","title":"Pollen biostratigraphy of Lower Tertiary sediments from five cores from Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":8},{"subject":{"id":70226689,"text":"pp1603I - 2001 - Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia","indexId":"pp1603I","publicationYear":"2001","noYear":false,"chapter":"I","title":"Foraminifera from Paleogene sediments from the Millhaven and Millers Pond Cores, Screven and Burke Counties, Georgia"},"predicate":"IS_PART_OF","object":{"id":24990,"text":"pp1603 - 2001 - Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","indexId":"pp1603","publicationYear":"2001","noYear":false,"title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia"},"id":9}],"lastModifiedDate":"2021-12-01T16:34:54.134521","indexId":"pp1603","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1603","title":"Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia","docAbstract":"Five deep stratigraphic test holes were drilled from 1991 to 1993 in support of multidisciplinary investigations to determine the stratigraphy of Upper Cretaceous and Tertiary sediments of the coastal plain in east-central Georgia. Cored sediment and geological logs from the Millhaven test hole in Screven County and the Girard and Millers Pond test holes in Burke County are the primary sources of lithologic and paleontologic information from this report. Lithologic and paleontologic information from the Thompson Oak and McBean test holes in Burke County supplements the discussion of stratigraphy and sedimentation in the updip part of the study area near the Millers Pond test hole.","language":"English","publisher":"U.S. Geological Survey,","doi":"10.3133/pp1603","usgsCitation":"Edwards, L.E., 2001, Geology and paleontology of five cores from Screven and Burke counties, eastern Georgia (Version 1.0): U.S. Geological Survey Professional Paper 1603, 255 p., https://doi.org/10.3133/pp1603.","productDescription":"255 p.","costCenters":[],"links":[{"id":53977,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/pp/1603/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":156895,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/pp/1603/report-thumb.jpg"},{"id":1931,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/prof/p1603/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Georgia","county":"Burke County, Screven County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -81.43890380859375,\n              32.85421076375021\n            ],\n            [\n              -81.5020751953125,\n              32.95797741405952\n            ],\n            [\n              -81.49658203125,\n              33.01557297778958\n            ],\n            [\n              -81.63116455078124,\n              33.09614359735857\n            ],\n            [\n              -81.78771972656249,\n              33.20652045176062\n            ],\n            [\n              -81.9085693359375,\n              33.3442960191357\n            ],\n            [\n              -82.034912109375,\n              33.32593850874471\n            ],\n            [\n              -82.06512451171875,\n              33.26624989076275\n            ],\n            [\n              -81.95526123046875,\n              33.09384260312052\n            ],\n            [\n              -81.68609619140624,\n              32.88189375925038\n            ],\n            [\n              -81.5570068359375,\n              32.78034721066307\n            ],\n            [\n              -81.441650390625,\n              32.76649095995108\n            ],\n            [\n              -81.419677734375,\n              32.80574473290688\n            ],\n            [\n              -81.43890380859375,\n              32.85421076375021\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad6e4b07f02db684342","contributors":{"authors":[{"text":"Edwards, Lucy E. 0000-0003-4075-3317 leedward@usgs.gov","orcid":"https://orcid.org/0000-0003-4075-3317","contributorId":2647,"corporation":false,"usgs":true,"family":"Edwards","given":"Lucy","email":"leedward@usgs.gov","middleInitial":"E.","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":192957,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70208234,"text":"70208234 - 2001 - Quaternary glacial, lacustrine, and fluvial interactions in the western Noatak basin, Northwest Alaska","interactions":[],"lastModifiedDate":"2020-01-31T11:45:07","indexId":"70208234","displayToPublicDate":"2001-01-31T11:33:15","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Quaternary glacial, lacustrine, and fluvial interactions in the western Noatak basin, Northwest Alaska","docAbstract":"<p><span>The 130 km long Noatak basin is surrounded by mountains of the western Brooks Range. Middle and late Pleistocene glaciers flowing southeast into the basin dammed a succession of proglacial lakes defined by shorelines, outlet channels, and upper limits of wave erosion. More than 60 bluffs along the Noatak River and its principal tributaries expose glacial and glaciolacustrine sediments that exhibit cut-and-fill relationships with interglacial and interstadial river-channel and floodplain deposits. This report focuses on the western Noatak basin, where high bluffs created by deep postglacial erosion record four major glacial advances. During the Cutler advance, a floating ice tongue terminated in a large proglacial lake that filled the Noatak basin. The retreating glacier abandoned a trough along the valley center that subsequently filled with about 40 m of sediment during several younger glaciations and probably two major interglacial episodes. Alluvium that formed near the beginning of the younger interglaciation contains the 140,000 yr old Old Crow tephra. The subsequent closely spaced Okak and Makpik advances are clearly younger than the maximum of the last interglaciation, but they preceded a middle Wisconsin (36-30 ka) nonglacial interval in the Noatak basin. The Okak advance terminated in an extensive lake, whereas glaciers of the Makpik and the subsequent Anisak advances flowed into much narrower lakes that filled only the basin center. The Anisak advance, bracketed by radiocarbon ages of about 35 and 13.6 ka, represents the Last Glacial Maximum (LGM) in the western Noatak basin. Correlations with the oldest and youngest glacial deposits of the central Brooks Range are clear, but relationships to events of intermediate age are more tenuous. Early Pleistocene and older glacial advances from the central Brooks Range must have filled the Noatak basin and overflowed northward through Howard Pass. A younger glacial advance, of inferred middle Pleistocene (Sagavanirktok River) age, extended down the Noatak valley into the basin center, but its deposits are deeply buried beneath the basin floor and must be older than the Cutler moraine. The Cutler advance may have been synchronous with the older of two advances of Itkillik I age in the Atongarak Creek area, but other evidence indicates that the Okak-Makpik moraine succession more likely was synchronous with the two Atongarak Creek moraines. Radiocarbon ages, surface morphology, soil and weathering profiles, and lake-level history all support correlation of the last (Anisak) major glacial advance in the western basin with the Douglas Creek moraine farther east and with Itkillik II (late Wisconsin) glaciation of the central Brooks Range.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0277-3791(00)00110-4","usgsCitation":"Hamilton, T.D., 2001, Quaternary glacial, lacustrine, and fluvial interactions in the western Noatak basin, Northwest Alaska: Quaternary Science Reviews, v. 20, no. 1-3, p. 371-391, https://doi.org/10.1016/S0277-3791(00)00110-4.","productDescription":"21 p.","startPage":"371","endPage":"391","costCenters":[],"links":[{"id":371810,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Noatak River region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -163.8720703125,\n              65.91062334197893\n            ],\n            [\n              -153.929443359375,\n              65.91062334197893\n            ],\n            [\n              -153.929443359375,\n              69.00961097622238\n            ],\n            [\n              -163.8720703125,\n              69.00961097622238\n            ],\n            [\n              -163.8720703125,\n              65.91062334197893\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"20","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hamilton, T. D.","contributorId":36921,"corporation":false,"usgs":true,"family":"Hamilton","given":"T.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":781112,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70094002,"text":"70094002 - 2001 - Knickzone propagation in the Black Hills and northern High Plains: A different perspective on the late Cenozoic exhumation of the Laramide Rocky Mountains","interactions":[],"lastModifiedDate":"2022-12-22T17:33:50.273004","indexId":"70094002","displayToPublicDate":"2001-01-01T15:55:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Knickzone propagation in the Black Hills and northern High Plains: A different perspective on the late Cenozoic exhumation of the Laramide Rocky Mountains","docAbstract":"<p><span>Geomorphic research in the Black Hills and northern High Plains poses an intriguing hypothesis for the Cenozoic evolution of this salient of the Laramide Rockies. Most recently, geologists have appealed to late Cenozoic epeirogenic uplift or climate change to explain the post-Laramide unroofing of the Rockies. On the basis of field mapping and the interpretation of long-valley profiles, we conclude that the propagation of knickzones is the primary mechanism for exhumation in the Black Hills. Long profiles of major drainages show discrete breaks in the slope of the channel gradient that are not coincident with changes in rock type. We use the term knickzones to describe these features because their profiles are broadly convex over tens of kilometers. At and below the knickzone, the channel is incising into bedrock, abandoning a flood plain, and forming a terrace. Above the knickzone, the channel is much less incised, resulting in a broad valley bottom. Numerous examples of stream piracy are documented, and in each case, the capture is recorded in the same terrace level. These observations are consistent with migrating knickzones that have swept through Black Hills streams, rearranging drainages in their wake. We demonstrate there are two knickzone fronts associated with mapped terraces. Preliminary field evidence of soil development shows that these terraces are time transgressive in nature. Our data strongly suggest that knickzone propagation must be considered a viable mechanism driving late Cenozoic fluvial incision and exhumation of the northern High Plains and adjacent northern Rocky Mountains.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(2001)029<0547:KPITBH>2.0.CO;2","usgsCitation":"Zaprowski, B.J., Evenson, E.B., Pazzaglia, F.J., and Epstein, J.B., 2001, Knickzone propagation in the Black Hills and northern High Plains: A different perspective on the late Cenozoic exhumation of the Laramide Rocky Mountains: Geology, v. 29, no. 6, p. 547-550, https://doi.org/10.1130/0091-7613(2001)029<0547:KPITBH>2.0.CO;2.","productDescription":"4 p.","startPage":"547","endPage":"550","numberOfPages":"4","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":282442,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"South Dakota, Wyoming","otherGeospatial":"Black Hills, High Plains, Laramide Rocky Mountains","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -104.7945,43.2665 ], [ -104.7945,44.7866 ], [ -102.7523,44.7866 ], [ -102.7523,43.2665 ], [ -104.7945,43.2665 ] ] ] } } ] }","volume":"29","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6377e4b0b290850fed33","contributors":{"authors":[{"text":"Zaprowski, Brent J.","contributorId":6362,"corporation":false,"usgs":true,"family":"Zaprowski","given":"Brent","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":490425,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Evenson, Edward B.","contributorId":16751,"corporation":false,"usgs":true,"family":"Evenson","given":"Edward","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":490426,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pazzaglia, Frank J.","contributorId":19477,"corporation":false,"usgs":true,"family":"Pazzaglia","given":"Frank","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":490427,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"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":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":490424,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70074116,"text":"70074116 - 2001 - Observations of earthquake source parameters at 2 km depth in the Long Valley Caldera, eastern California","interactions":[],"lastModifiedDate":"2014-01-27T14:52:25","indexId":"70074116","displayToPublicDate":"2001-01-01T14:47:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Observations of earthquake source parameters at 2 km depth in the Long Valley Caldera, eastern California","docAbstract":"To investigate seismic source parameter scaling and seismic efficiency in the Long Valley caldera, California, we measured source parameters for 41 earthquakes (M 0.5 to M 5) recorded at 2 km depth in the Long Valley Exploratory Well. Borehole recordings provide a wide frequency bandwidth, typically 1 to 200–300 Hz, and greatly reduce seismic noise and path effects compared to surface recordings. We calculated source parameters in both the time and frequency domains for P and S waves. At frequencies above the corner frequency, spectra decay faster than ω<sup>3</sup>, indicating that attenuation plays an important role in shaping the spectra (path averaged Q<sub>p</sub> = 100–400, Q<sub>s</sub> = 200–800). Source parameters are corrected for attenuation and radiation pattern.\n\nBoth static stress drops and apparent stresses range from approximately 0.01 to 30 MPa. Although static stress drops do not vary with seismic moment for these data, our analyses are consistent with apparent stress increasing with increasing moment. To estimate tectonic driving stress and seismic efficiencies in the region, we combined source parameter measurements with knowledge of the stress field and a Coulomb failure criterion to infer a driving stress of 40–70 MPa. Subsequent seismic efficiencies are consistent with McGarr's (1999) hypothesis of a maximum seismic efficiency of 6%.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120000079","usgsCitation":"Prejean, S.G., and Ellsworth, W.L., 2001, Observations of earthquake source parameters at 2 km depth in the Long Valley Caldera, eastern California: Bulletin of the Seismological Society of America, v. 91, no. 2, p. 165-177, https://doi.org/10.1785/0120000079.","productDescription":"13 p.","startPage":"165","endPage":"177","numberOfPages":"13","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":281592,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":281591,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120000079"}],"country":"United States","state":"California","otherGeospatial":"Long Valley Caldera","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -119.3236,36.0389 ], [ -119.3236,38.1445 ], [ -117.965,38.1445 ], [ -117.965,36.0389 ], [ -119.3236,36.0389 ] ] ] } } ] }","volume":"91","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6984e4b0b29085102b9b","contributors":{"authors":[{"text":"Prejean, Stephanie G. sprejean@usgs.gov","contributorId":2602,"corporation":false,"usgs":true,"family":"Prejean","given":"Stephanie","email":"sprejean@usgs.gov","middleInitial":"G.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":false,"id":489422,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ellsworth, William L. ellsworth@usgs.gov","contributorId":787,"corporation":false,"usgs":true,"family":"Ellsworth","given":"William","email":"ellsworth@usgs.gov","middleInitial":"L.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":489421,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70217564,"text":"70217564 - 2001 - Neotectonics of the eastern Juan de Fuca Strait: A digital geological and geophysical atlas","interactions":[],"lastModifiedDate":"2021-01-21T20:14:45.014102","indexId":"70217564","displayToPublicDate":"2001-01-01T14:14:07","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"seriesTitle":{"id":5589,"text":"Open File","active":true,"publicationSubtype":{"id":4}},"seriesNumber":"3931","title":"Neotectonics of the eastern Juan de Fuca Strait: A digital geological and geophysical atlas","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Natural Resources Canada","doi":"10.4095/212099","usgsCitation":"2001, Neotectonics of the eastern Juan de Fuca Strait: A digital geological and geophysical atlas: Open File 3931, HTML Document, https://doi.org/10.4095/212099.","productDescription":"HTML Document","costCenters":[],"links":[{"id":478833,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4095/212099","text":"Publisher Index Page"},{"id":382428,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","state":"British Columbia, Washington","otherGeospatial":"Juan de Fuca Strait","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -123.14300537109374,\n              48.156925112380684\n            ],\n            [\n              -122.78594970703126,\n              48.231076563740906\n            ],\n            [\n              -122.67196655273436,\n              48.38635420778455\n            ],\n            [\n              -123.43688964843749,\n              48.427378042075105\n            ],\n            [\n              -123.54812622070311,\n              48.31882083063846\n            ],\n            [\n              -123.93951416015626,\n              48.378145469762444\n            ],\n            [\n              -124.43389892578124,\n              48.524790735807755\n            ],\n            [\n              -124.75250244140625,\n              48.60204136700653\n            ],\n            [\n              -124.7113037109375,\n              48.391825964362305\n            ],\n            [\n              -124.09057617187499,\n              48.20271028869972\n            ],\n            [\n              -123.96148681640625,\n              48.16516946195868\n            ],\n            [\n              -123.68820190429686,\n              48.16516946195868\n            ],\n            [\n              -123.50555419921875,\n              48.12485115686402\n            ],\n            [\n              -123.24188232421875,\n              48.120267527274464\n            ],\n            [\n              -123.14300537109374,\n              48.156925112380684\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"compilers":[{"text":"Rathwell, G. J.","contributorId":248256,"corporation":false,"usgs":false,"family":"Rathwell","given":"G.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":808679,"contributorType":{"id":3,"text":"Compilers"},"rank":1},{"text":"Kung, R. B.","contributorId":248257,"corporation":false,"usgs":false,"family":"Kung","given":"R.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":808680,"contributorType":{"id":3,"text":"Compilers"},"rank":2},{"text":"Rhea, S. B.","contributorId":248258,"corporation":false,"usgs":false,"family":"Rhea","given":"S.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":808681,"contributorType":{"id":3,"text":"Compilers"},"rank":3}],"editors":[{"text":"Mosher, D. C.","contributorId":57689,"corporation":false,"usgs":false,"family":"Mosher","given":"D.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":808677,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Johnson, Samuel Y. 0000-0001-7972-9977 sjohnson@usgs.gov","orcid":"https://orcid.org/0000-0001-7972-9977","contributorId":2607,"corporation":false,"usgs":true,"family":"Johnson","given":"Samuel","email":"sjohnson@usgs.gov","middleInitial":"Y.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":808678,"contributorType":{"id":2,"text":"Editors"},"rank":2}]}}
,{"id":70095004,"text":"70095004 - 2001 - Mapping southern Puget Sound delta fronts after 2001 earthquake","interactions":[],"lastModifiedDate":"2014-02-26T13:54:47","indexId":"70095004","displayToPublicDate":"2001-01-01T13:49:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Mapping southern Puget Sound delta fronts after 2001 earthquake","docAbstract":"A moment magnitude 6.8 earthquake struck southern Puget Sound (Figure 1) on February 28, 2001, causing an estimated $0.7–$1.4 billion in damages to buildings and roadways in the region [Williams et al., 2001]. The earthquake source was 52 km deep, and the epicenter was located close to the Nisqually River delta in the same location as the epicenter of the magnitude 7.1 earthquake of 1949 (http://www.geophys.washington.edu/seis/pnsn/info_ general/). These deep earthquakes occurred in the eastward-dipping subducting slab of the Juan de Fuca plate and typically caused less damage than shallower, crustal events of the same magnitude. Details of the seismology and effects of the earthquake can be found at http://earthquake.usgs.gov/activity/latest/ eq_01_02_28.html.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Eos, Transactions American Geophysical Union","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1029/01EO00287","usgsCitation":"Gardner, J.V., van den Ameele, E.J., Gelfenbaum, G., Bernhardt, W., Lee, H., and Palmer, S., 2001, Mapping southern Puget Sound delta fronts after 2001 earthquake: Eos, Transactions, American Geophysical Union, v. 82, no. 42, p. 485-489, https://doi.org/10.1029/01EO00287.","productDescription":"7 p.","startPage":"485","endPage":"489","numberOfPages":"7","costCenters":[],"links":[{"id":282842,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282841,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/01EO00287"}],"country":"United States","state":"Washington","otherGeospatial":"Puget Sound","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -123.0,47.0 ], [ -123.0,48.0 ], [ -122.0,48.0 ], [ -122.0,47.0 ], [ -123.0,47.0 ] ] ] } } ] }","volume":"82","issue":"42","noUsgsAuthors":false,"publicationDate":"2006-10-19","publicationStatus":"PW","scienceBaseUri":"53cd6610e4b0b290851007ed","contributors":{"authors":[{"text":"Gardner, James V.","contributorId":93035,"corporation":false,"usgs":true,"family":"Gardner","given":"James","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":491051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"van den Ameele, Edward J.","contributorId":14728,"corporation":false,"usgs":true,"family":"van den Ameele","given":"Edward","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":491046,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gelfenbaum, Guy","contributorId":79844,"corporation":false,"usgs":true,"family":"Gelfenbaum","given":"Guy","affiliations":[],"preferred":false,"id":491050,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bernhardt, Walter","contributorId":25459,"corporation":false,"usgs":true,"family":"Bernhardt","given":"Walter","email":"","affiliations":[],"preferred":false,"id":491047,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lee, Homa hjlee@usgs.gov","contributorId":48642,"corporation":false,"usgs":true,"family":"Lee","given":"Homa","email":"hjlee@usgs.gov","affiliations":[],"preferred":false,"id":491049,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Palmer, Steve","contributorId":36053,"corporation":false,"usgs":true,"family":"Palmer","given":"Steve","email":"","affiliations":[],"preferred":false,"id":491048,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70073527,"text":"70073527 - 2001 - Relocation of Wyoming mine production blasts using calibration explosions","interactions":[],"lastModifiedDate":"2023-07-19T16:40:25.755815","indexId":"70073527","displayToPublicDate":"2001-01-01T13:48:00","publicationYear":"2001","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Relocation of Wyoming mine production blasts using calibration explosions","docAbstract":"An important requirement for a comprehensive seismic monitoring system is the capability to accurately locate small seismic events worldwide. Accurate event location can improve the probability of determining whether or not a small event, recorded predominantly by local and regional stations, is a nuclear explosion. For those portions of the earth where crustal velocities are not well established, reference event calibration techniques offer a method of increased locational accuracy and reduced locational bias.\nIn this study, data from a set of mining events with good ground-truth data in the Powder River Basin region of eastern Wyoming are used to investigate the potential of event calibration techniques in the area. Results of this study are compared with locations published in the prototype International Data Center’s Reviewed Event Bulletin (REB). A Joint Hypocenter Determination (JHD) method was applied to a set of 23 events. Four of those events with superior ground-truth control (mining company report or Global Positioning System data) were used as JHD reference events, Nineteen (83%) of the solutions converged and the resulting set of station-phase travel-time corrections from the JHD results was then tested. When those travel-time corrections were applied individually to the four events with good ground-truth control, the average locational error reduced the original REB location error from 16.1 km to 5.7 km (65% improvement). The JHD locations indicated reduced locational bias and all of the individual error ellipses enclosed the actual known event locations.\nGiven a set of well-recorded calibration events, it appears that the JHD methodology is a viable technique for improving locational accuracy of future small events where the location depends on arrival times from predominantly local and/or regional stations. In this specific case, the International Association of Seismology and the Physics of the Earth’s Interior (IASPEI) travel-time tables, coupled with JHDderived travel-time corrections, may obviate the need for an accurately known regional velocity structure in the Powder River Basin region.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Monitoring the comprehensive Nuclear-Test-Ban Treaty: Sourse location","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Springer","doi":"10.1007/978-3-0348-8250-7_8","isbn":"978-3-0348-8250-7","usgsCitation":"Finn, C., Kraft, G.D., Sibol, M.S., Jones, R.L., and Pulaski, M.E., 2001, Relocation of Wyoming mine production blasts using calibration explosions, chap. <i>of</i> Monitoring the comprehensive Nuclear-Test-Ban Treaty: Sourse location, v. 158, no. 1-2, p. 105-116, https://doi.org/10.1007/978-3-0348-8250-7_8.","productDescription":"12 p.","startPage":"105","endPage":"116","costCenters":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true},{"id":422,"text":"National Geomagnetism Program","active":false,"usgs":true}],"links":[{"id":281251,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Montana, Wyoming","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -104.0076,42.6259 ], [ -104.0076,46.7850 ], [ -108.1714,46.7850 ], [ -108.1714,42.6259 ], [ -104.0076,42.6259 ] ] ] } } ] }","volume":"158","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7043e4b0b29085106ef5","contributors":{"authors":[{"text":"Finn, Carol A. 0000-0003-3144-1645 cafinn@usgs.gov","orcid":"https://orcid.org/0000-0003-3144-1645","contributorId":152589,"corporation":false,"usgs":true,"family":"Finn","given":"Carol A.","email":"cafinn@usgs.gov","affiliations":[{"id":300,"text":"Geologic Hazards Science Center","active":true,"usgs":true}],"preferred":false,"id":488891,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kraft, Gordon D.","contributorId":101186,"corporation":false,"usgs":true,"family":"Kraft","given":"Gordon","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":488895,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sibol, Matthew S.","contributorId":92578,"corporation":false,"usgs":true,"family":"Sibol","given":"Matthew","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":488894,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jones, Ronald L.","contributorId":49702,"corporation":false,"usgs":true,"family":"Jones","given":"Ronald","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":488892,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pulaski, Mark E.","contributorId":72299,"corporation":false,"usgs":true,"family":"Pulaski","given":"Mark","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":488893,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70074097,"text":"70074097 - 2001 - Paleohydrologic record of spring deposits in and around Pleistocene pluvial Lake Tecopa, southeastern California","interactions":[],"lastModifiedDate":"2014-01-27T13:29:19","indexId":"70074097","displayToPublicDate":"2001-01-01T13:21:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Paleohydrologic record of spring deposits in and around Pleistocene pluvial Lake Tecopa, southeastern California","docAbstract":"Tufa (spring) deposits in the Tecopa basin, California, reflect the response of arid groundwater regimes to wet climate episodes. Two types of tufa are represented, informally defined as (1) an easily disaggregated, fine-grained mixture of calcite and quartz (friable tufa) in the southwest Tecopa Valley, and (2) hard, vuggy micrite, laminated carbonate, and carbonate-cemented sands and gravels (indurated tufa) along the eastern margin of Lake Tecopa. High δ<sup>18</sup>O<sub>VSMOW</sub> (Vienna standard mean ocean water) water values, field relations, and the texture of friable tufa suggest rapid nucleation of calcite as subaqueous, fault- controlled groundwater discharge mixed with high-pH, hypersaline lake water. Variations between δ<sup>18</sup>O<sub>VSMOW</sub> and δ<sup>13</sup>C<sub>PDB</sub> (Peedee belemnite) values relative to other closed basin lakes such as the Great Salt Lake and Lake Lahontan suggest similarities in climatic and hydrologic settings. Indurated tufa, also fault controlled, formed mounds and associated feeder systems as well as stratabound carbonate-cemented ledges. Both deposits represent discharge of deeply circulated, high total dissolved solids, and high <i>p</i>CO<sub>2</sub> regional groundwater with kinetic enrichments of as much as several per mil for δ<sup>18</sup>O<sub>VSMOW</sub> values.\n\nField relations show that indurated tufa represents episodic discharge, and U-series ages imply that discharge was correlated with cold, wet climate episodes. In response to both the breaching of the Tecopa basin and a modern arid climate, most discharge has changed from fault-controlled locations near basin margins to topographic lows of the Amargosa River drainage at elevations 30–130 m lower. Because of episodic climate change, spring flows may have relocated from basin margin to basin center multiple times.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"GSA Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(2001)113<0659:PROSDI>2.0.CO;2","usgsCitation":"Nelson, S.T., Karlsson, H.R., Paces, J.B., Tingey, D.G., Ward, S., and Peters, M.T., 2001, Paleohydrologic record of spring deposits in and around Pleistocene pluvial Lake Tecopa, southeastern California: GSA Bulletin, v. 113, no. 5, p. 659-670, https://doi.org/10.1130/0016-7606(2001)113<0659:PROSDI>2.0.CO;2.","productDescription":"12 p.","startPage":"659","endPage":"670","numberOfPages":"12","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":281581,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":281580,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/0016-7606(2001)113<0659:PROSDI>2.0.CO;2"}],"country":"United States","state":"California","city":"Tecopa","otherGeospatial":"Lake Tecopa","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.286772,35.793291 ], [ -116.286772,35.899551 ], [ -116.10947,35.899551 ], [ -116.10947,35.793291 ], [ -116.286772,35.793291 ] ] ] } } ] }","volume":"113","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6a7ce4b0b290851034a1","contributors":{"authors":[{"text":"Nelson, Stephen T.","contributorId":32078,"corporation":false,"usgs":true,"family":"Nelson","given":"Stephen","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":489396,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Karlsson, Haraldur R.","contributorId":80180,"corporation":false,"usgs":true,"family":"Karlsson","given":"Haraldur","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":489399,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paces, James B. 0000-0002-9809-8493 jbpaces@usgs.gov","orcid":"https://orcid.org/0000-0002-9809-8493","contributorId":2514,"corporation":false,"usgs":true,"family":"Paces","given":"James","email":"jbpaces@usgs.gov","middleInitial":"B.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":489394,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tingey, David G.","contributorId":67406,"corporation":false,"usgs":true,"family":"Tingey","given":"David","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":489398,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ward, Stephen","contributorId":44072,"corporation":false,"usgs":true,"family":"Ward","given":"Stephen","affiliations":[],"preferred":false,"id":489397,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Peters, Mark T.","contributorId":22243,"corporation":false,"usgs":true,"family":"Peters","given":"Mark","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":489395,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70094992,"text":"70094992 - 2001 - Displacement rates on the Toroweap and Hurricane faults: Implications for Quaternary downcutting in the Grand Canyon, Arizona","interactions":[],"lastModifiedDate":"2022-12-23T12:04:08.833577","indexId":"70094992","displayToPublicDate":"2001-01-01T12:52:00","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Displacement rates on the Toroweap and Hurricane faults: Implications for Quaternary downcutting in the Grand Canyon, Arizona","docAbstract":"The Toroweap and Hurricane faults, considered to be the most active in Arizona, cross the Uinkaret volcanic field in the western Grand Canyon. These normal faults are downthrown to the west, and the Colorado River crosses these faults as it flows west in the Grand Canyon. Cosmogenic <sup>3</sup>He (<sup>3</sup>He<sub>c</sub>) dates on basalt flows and related landforms are used to calculate vertical displacement rates for these faults. The two faults cross unruptured alluvial fans dated as 3 ka (Toroweap) and 8 ka (Hurricane), and 10 other landforms that range in age from 30 to 400 ka are displaced. Middle and late Quaternary displacement rates of the Toroweap and Hurricane faults are 70–180 and 70–170 m/m.y., respectively. On the basis of these rates, the combined displacement of 580 m on these faults could have occurred in the past 3 to 5 m.y. All <sup>3</sup>He<sub>c</sub> dates are younger than existing K- Ar dates and are consistent with new <sup>40</sup>Ar/<sup>39</sup>Ar dates and existing thermoluminescence (TL) dates on basalt flows. These different dating techniques may be combined in an analysis of displacement rates. Downcutting rates for the Colorado River in the eastern Grand Canyon (400 m/m.y.) are at least double the downcutting rates west of the faults (70–160 m/m.y.). Faulting probably increased downcutting in the eastern Grand Canyon relative to downcutting in the western Grand Canyon during the late Quaternary.","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(2001)029<1035:DROTTA>2.0.CO;2","usgsCitation":"Fenton, C.R., Webb, R., Pearthree, P.A., Cerling, T.E., and Poreda, R.J., 2001, Displacement rates on the Toroweap and Hurricane faults: Implications for Quaternary downcutting in the Grand Canyon, Arizona: Geology, v. 29, no. 11, p. 1035-1038, https://doi.org/10.1130/0091-7613(2001)029<1035:DROTTA>2.0.CO;2.","productDescription":"4 p.","startPage":"1035","endPage":"1038","numberOfPages":"4","costCenters":[],"links":[{"id":282831,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Grand Canyon","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -114.0572,35.6882 ], [ -114.0572,36.5318 ], [ -111.828,36.5318 ], [ -111.828,35.6882 ], [ -114.0572,35.6882 ] ] ] } } ] }","volume":"29","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5548e4b0b290850f63a3","contributors":{"authors":[{"text":"Fenton, Cassandra R.","contributorId":58915,"corporation":false,"usgs":true,"family":"Fenton","given":"Cassandra","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":491036,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Webb, Robert H. rhwebb@usgs.gov","contributorId":1573,"corporation":false,"usgs":false,"family":"Webb","given":"Robert H.","email":"rhwebb@usgs.gov","affiliations":[{"id":12625,"text":"School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, 85721, USA","active":true,"usgs":false}],"preferred":false,"id":491032,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pearthree, Philip A.","contributorId":17363,"corporation":false,"usgs":true,"family":"Pearthree","given":"Philip","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":491033,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cerling, Thure E.","contributorId":22822,"corporation":false,"usgs":true,"family":"Cerling","given":"Thure","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":491034,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poreda, Robert J.","contributorId":37797,"corporation":false,"usgs":true,"family":"Poreda","given":"Robert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":491035,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
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