Water-quality samples were collected from 20 surface-water sites and 7 ground-water sites across the Prairie Band Potawatomi Reservation in northeastern Kansas as part of a water-quality study begun in 1996. Water quality is a very important consideration for the tribe. Three creeks draining the reservation, Soldier, Little Soldier, and South Cedar Creeks, are important tribal resources used for maintaining subsistence fishing and hunting needs for tribal members. Samples were collected twice during June 1999 and June 2000 at all 20 surface-water sites after herbicide application, and nine quarterly samples were collected at 5 of the 20 sampling sites from February 1999 through February 2001. Samples were collected once at six wells and twice at one well from September through December 2000. Surface-water-quality constituents analyzed included nutrients, pesticides, and bacteria. In addition to nutrients, pesticides, and bacteria, ground-water constituents analyzed included major dissolved ions, arsenic, boron, and dissolved iron and manganese.
The median nitrite plus nitrate concentration was 0.376 mg/L (milligram per liter) for 81 surface-water samples, and the maximum concentration was 4.18 mg/L as nitrogen, which is less than one-half the U.S. Environmental Protection Agency's Maximum Contaminant Level (MCL) for drinking water of 10 mg/L as nitrogen. Fifty-one of the 81 surface-water-quality samples exceeded the U.S. Environmental Protection Agency's recommended goal for total phosphorus of 0.10 mg/L for the protection of aquatic life.
Triazine concentrations in 26 surface-water-quality samples collected during May and June 1999 and 2000 exceeded 3.0 μg/L (micrograms per liter), the Maximum Contaminant Level established for drinking water by the U.S. Environmental Protection Agency. Triazine herbicide concentrations tended to be highest during late spring runoff after herbicide application. High concentrations of fecal indicator bacteria in surface water are a concern on the reservation with fecal coliform concentrations ranging from 4 to greater than 31,000 colonies per 100 milliliters of water with a median concentration of 570 colonies per 100 milliliters. More than one-half of the surface-water-quality samples exceeded the Kansas Department of Health and Environment contact recreation criteria of 200 and 2,000 colonies per 100 milliliters of water and were collected mostly during the spring and summer.
Two wells had sodium concentrations of about 10 times the U.S. Environmental Protection Agengy health advisory level (HAL) of 20 mg/L; concentrations ranged from 241 to 336 mg/L. In water from two wells, sulfate concentrations exceeded 800 mg/L, more than three times the U.S. Environmental Protection Agency Secondary Maximum Contaminant Level (SMCL) for drinking water of 250 mg/L. All but two of the eight ground-water-quality samples had dissolved-solids concentrations exceeding the SMCL of 500 mg/L. The highest concentration of 2,010 mg/L was more than four times the SMCL. Dissolved boron concentrations exceeded the U.S. Environmental Protection Agency 600-μg/L HAL in water from two of the seven wells sampled. Because the HAL is for a lifetime of exposure, the anticipated health risk due to dissolved boron is low. Dissolved iron concentrations in ground-water samples exceeded the 300-μg/L SMCL for treated drinking water in three of the seven wells sampled. Dissolved manganese concentrations in water from the same three wells also exceeded the established SMCL of 50 μg/L. Dissolved pesticides were not detected in any of the well samples; however, there were degradation products of the herbicides alachlor and metolachlor in several samples. Insecticides were not detected in any ground-water-quality samples. Low concentrations of E. coli and fecal coliform bacteria were detected in water from two wells, and E. coli was detected in water from one well. Much higher concentrations of E. coli, fecal coliform, and fecal strepto
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri014196","collaboration":"Prepared in cooperation with the Prairie Band Potawatomi","usgsCitation":"Trombley, T.J., 2001, Quality of water on the Prairie Band Potawatomi Reservation, northeastern Kansas, February 1999 through February 2001: U.S. Geological Survey Water-Resources Investigations Report 2001-4196, vi, 51 p. , https://doi.org/10.3133/wri014196.","productDescription":"vi, 51 p. 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\"}}]}","contact":"Director, Kansas Water Science Center
U.S. Geological Survey
1217 Biltmore Drive
Lawrence, KS 66049
This report presents the locations, descriptions, analytical procedures used, and an inter-lab comparison of over 1100 geochemical analyses of samples of soil and sediment in and downstream of a major lead-zinc-silver mining district in the Coeur d'Alene (CdA) drainage basin of northern Idaho. The samples fall in 3 broad categories: (1) samples from vertical profiles of floodplain soils in the valley of the main stem of the CdA River (767 samples) and of the South Fork of the CdA River (38 samples), (2) size fractionated surficial samples of sediment bedload within the channel of the South Fork of the CdA River (68 samples), and (3) samples from vertical profiles of sediment bedload within the channel of the main stem of the CdA River (260 samples).
\nFive different laboratories contributed geochemical data for this report. Four of the five laboratories employed analytical methods that require sample dissolution prior to analysis; one laboratory (US Geological Survey) used analytical instrumentation (energy dispersive x-ray fluorescence [EDXRF]) that is applied to pulverized samples. Some dissolution procedures use four acids (hydrochloric, nitric, perchloric, and hydrofluoric; Eastern Washington University [EWU] Geochemical Laboratory and XRAL Laboratories, Inc.), others use two acids (nitric acid and aqua regia; CHEMEX Labs, Inc.), and some use only concentrated nitric acid (ACZ Laboratories, Inc.). Most analyses of dissolved samples were done by Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES) or by ICP - MS (Mass Spectroscopy). Some analyses for Ag and K were done by Flame Atomic Absorption (FAA).
\nInter-laboratory comparisons are made for 6 elements: lead (Pb), zinc (Zn), iron\n(Fe), manganese (Mn), arsenic (As), and cadmium (Cd). In general inter-laboratory correlations are better for samples within the compositional range of the Standard Reference Materials (SRMs) from the National Institute of Standards and Technology (NIST). Analyses by EWU are the most accurate relative to the NIST standards (mean recoveries within 1% for Pb, Fe, Mn, and As, 3% for Zn and 5% for Cd) and are the most precise (within 7% of the mean at the 95% confidence interval). USGS-EDXRF is similarly accurate for Pb and Zn. XRAL and ACZ are relatively accurate for Pb (within 5-8% of certified NIST values), but were considerably less accurate for the other 5 elements of concern (10-25% of NIST values). However, analyses of sample splits by more than one laboratory reveal that, for some elements, XRAL (Pb, Mn, Cd) and ACZ (Pb, Mn, Zn, Fe) analyses were comparable to EWU analyses of the same samples (when values are within the range of NIST SRMs). These results suggest that, for some elements, XRAL and ACZ dissolutions are more effective on the matrix of the CdA samples than on the matrix of the NIST samples (obtained from soils around Butte, Montana). Splits of CdA samples analyzed by CHEMEX were the least accurate, yielding values 10-25% less than those of EWU.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr2001139","usgsCitation":"Box, S.E., Bookstrom, A.A., Ikramuddin, M., and Lindsay, J., 2001, Geochemical analysis of soils and sediments, Coeur d'Alene drainage basin, Idaho: sampling, analytical methods, and results (Online version 1.0): U.S. Geological Survey Open-File Report 2001-139, Report: 70 p.; ReadMe; Complete digital data package; Metadata; 7 Appendices: xls and dbf files, https://doi.org/10.3133/ofr2001139.","productDescription":"Report: 70 p.; ReadMe; Complete digital data package; Metadata; 7 Appendices: xls and dbf files","numberOfPages":"206","onlineOnly":"Y","additionalOnlineFiles":"Y","temporalStart":"1993-01-01","temporalEnd":"2000-12-31","costCenters":[{"id":658,"text":"Western Mineral Resources","active":false,"usgs":true}],"links":[{"id":175484,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr2001139.PNG"},{"id":10780,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/of01-139/","linkFileType":{"id":5,"text":"html"}},{"id":291343,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2001/of01-139/of01-139.pdf"},{"id":291344,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2001/of01-139/readme.txt"},{"id":291345,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2001/of01-139/of01-139.zip"},{"id":291346,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2001/of01-139/of01-139.met.txt"}],"country":"United States","state":"Idaho","otherGeospatial":"Coeur D�alene Drainage Basin","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -116.733333,47.466667 ], [ -116.733333,47.583333 ], [ -115.716667,47.583333 ], [ -115.716667,47.466667 ], [ -116.733333,47.466667 ] ] ] } } ] }","edition":"Online version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db6487f8","contributors":{"authors":[{"text":"Box, Stephen E. 0000-0002-5268-8375 sbox@usgs.gov","orcid":"https://orcid.org/0000-0002-5268-8375","contributorId":1843,"corporation":false,"usgs":true,"family":"Box","given":"Stephen","email":"sbox@usgs.gov","middleInitial":"E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":241354,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bookstrom, Arthur A. 0000-0003-1336-3364 abookstrom@usgs.gov","orcid":"https://orcid.org/0000-0003-1336-3364","contributorId":1542,"corporation":false,"usgs":true,"family":"Bookstrom","given":"Arthur","email":"abookstrom@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":5056,"text":"Office of the AD Energy and Minerals, and Environmental Health","active":true,"usgs":true}],"preferred":true,"id":241353,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ikramuddin, Mohammed","contributorId":46115,"corporation":false,"usgs":true,"family":"Ikramuddin","given":"Mohammed","email":"","affiliations":[],"preferred":false,"id":241356,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lindsay, James","contributorId":34993,"corporation":false,"usgs":true,"family":"Lindsay","given":"James","affiliations":[],"preferred":false,"id":241355,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":25768,"text":"wri014002 - 2001 - Simulation of ground-water flow in the Mojave River basin, California","interactions":[],"lastModifiedDate":"2023-09-12T15:55:39.9397","indexId":"wri014002","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2001-4002","title":"Simulation of ground-water flow in the Mojave River basin, California","docAbstract":"The proximity of the Mojave River ground-water basin to the highly urbanized Los Angeles region has led to rapid growth in population and, consequently, to an increase in the demand for water. The Mojave River, the primary source of surface water for the region, normally is dry-except for a small stretch of perennial flow and periods of flow after intense storms. Thus, the region relies almost entirely on ground water to meet its agricultural and municipal needs. Ground-water withdrawal since the late 1800's has resulted in discharge, primarily from pumping wells, that exceeds natural recharge. To better understand the relation between the regional and the floodplain aquifer systems and to develop a management tool that could be used to estimate the effects that future stresses may have on the ground-water system, a numerical ground-water flow model of the Mojave River ground-water basin was developed, in part, on the basis of a previously developed analog model. The ground-water flow model has two horizontal layers; the top layer (layer 1) corresponds to the floodplain aquifer and the bottom layer (layer 2) corresponds to the regional aquifer. There are 161 rows and 200 columns with a horizontal grid spacing of 2,000 by 2,000 feet. Two stress periods (wet and dry) per year are used where the duration of each stress period is a function of the occurrence, quantity of discharge, and length of stormflow from the headwaters each year. A steady-state model provided initial conditions for the transient-state simulation. The model was calibrated to transient-state conditions (1931-94) using a trial-and-error approach. The transient-state simulation results are in good agreement with measured data. Under transient-state conditions, the simulated floodplain aquifer and regional aquifer hydrographs matched the general trends observed for the measured water levels. The simulated streamflow hydrographs matched wet stress period average flow rates and times of no flow at the Barstow and Afton Canyon gages. Steady-state particle-tracking was used to estimate travel times for mountain-front and streamflow recharge. The simulated travel times for mountain-front recharge to reach the area west of Victorville were about 5,000 to 6,000 years; this result is in reasonable agreement with published results. Steady-state particle-tracking results for streamflow recharge indicate that in most subareas along the river, the particles quickly leave and reenter the river. The complaint that resulted in the adjudication of the Mojave River ground-water basin alleged that the cumulative water production upstream of the city of Barstow had overdrafted the ground-water basin. In order to ascertain the effect of pumping on ground-water and surface-water relations along the Mojave River, two pumping simulations were compared with the 1931-90 transient-state simulation (base case). The first simulation assumed 1931-90 pumping in the upper region (Este, Oeste, Alto, and Transition zone model subareas) but with no pumping in the remainder of the basin, and the second assumed 1931-90 pumping in the lower region (Centro, Harper Lake, Baja, Coyote Lake, and Afton Canyon model subareas) but with no pumping in remainder of the basin. In the upper region, assuming pumping only in the upper region, there was no change in storage, recharge from the Mojave River, ground-water discharge to the Mojave River, or evapotranspiration when compared with the base case. In the lower region, assuming pumping only in the upper region, there was storage accretion, decreased recharge from the Mojave River, increased ground-water discharge to the Mojave River, and increased evapotranspiration when compared with the base case. In the upper region, assuming pumping only in the lower region, there was storage accretion, decreased recharge from the Mojave River, increased ground-water discharge to the Mojave River, and increased evapotranspiration when compared with the base case. In the
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri014002","usgsCitation":"Stamos, C., Martin, P., Nishikawa, T., and Cox, B.F., 2001, Simulation of ground-water flow in the Mojave River basin, California: U.S. Geological Survey Water-Resources Investigations Report 2001-4002, Report: viii, 129 p.; Errata; 2 video files, https://doi.org/10.3133/wri014002.","productDescription":"Report: viii, 129 p.; Errata; 2 video files","numberOfPages":"137","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":157028,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/wri014002.JPG"},{"id":299437,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wri014002/pdf/wrir014002.pdf","text":"PDF Version 1","size":"5 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":1846,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri014002","linkFileType":{"id":5,"text":"html"}},{"id":299443,"rank":9,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/wri/wri014002/video/wrir014002.m4v","text":"A two-dimensional view of the model simulation--simulation period 1931-99 (.m4v)","size":"1.9 MB"},{"id":299442,"rank":8,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/wri/wri014002/video/wrir014002.mov","text":"A two-dimensional view of the model simulation--simulation period 1931-99 (.mov)","size":"3.1 MB"},{"id":299441,"rank":7,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/wri/wri014002/pdf/cover.pdf","text":"Cover","size":"7.2 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":299440,"rank":6,"type":{"id":12,"text":"Errata"},"url":"https://pubs.usgs.gov/wri/wri014002/errata/wrir014002.errata.html","text":"Errata sheet"},{"id":299439,"rank":5,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wri014002/pdf/wrir014002_ver3.pdf","text":"PDF Version 3","size":"5.9 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":299438,"rank":4,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wri014002/pdf/wrir014002_ver2.pdf","text":"PDF Version 2","size":"5.1 MB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"Mojave Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118.05908203124999,\n 34.14363482031264\n ],\n [\n -118.05908203124999,\n 36.05798104702501\n ],\n [\n -115.59814453125001,\n 36.05798104702501\n ],\n [\n -115.59814453125001,\n 34.14363482031264\n ],\n [\n -118.05908203124999,\n 34.14363482031264\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f8e4b07f02db5f298b","contributors":{"authors":[{"text":"Stamos, Christina L. 0000-0002-1007-9352","orcid":"https://orcid.org/0000-0002-1007-9352","contributorId":19593,"corporation":false,"usgs":true,"family":"Stamos","given":"Christina L.","affiliations":[],"preferred":false,"id":194993,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, Peter pmmartin@usgs.gov","contributorId":799,"corporation":false,"usgs":true,"family":"Martin","given":"Peter","email":"pmmartin@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194990,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nishikawa, Tracy 0000-0002-7348-3838 tnish@usgs.gov","orcid":"https://orcid.org/0000-0002-7348-3838","contributorId":1515,"corporation":false,"usgs":true,"family":"Nishikawa","given":"Tracy","email":"tnish@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194991,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cox, Brett F. bcox@usgs.gov","contributorId":5793,"corporation":false,"usgs":true,"family":"Cox","given":"Brett","email":"bcox@usgs.gov","middleInitial":"F.","affiliations":[],"preferred":true,"id":194992,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":2000149,"text":"2000149 - 2001 - Wetland restoration in the Prairie Pothole Region of North America: A literature review","interactions":[],"lastModifiedDate":"2022-02-16T16:00:47.677272","indexId":"2000149","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":9,"text":"Biological Science Report","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"USGS/BRD/BSR-2001-0006","title":"Wetland restoration in the Prairie Pothole Region of North America: A literature review","docAbstract":"The landscape of the prairie pothole region (PPR), a grassland biome of the northern U.S. Great Plains and parts of Canada, has been greatly altered by land use since the 1800's. Conversion of grassland to cropland and drainage of wetlands has resulted in wetland losses of up to 90% in some areas. Besides the area providing critical habitat to various wildlife, breeding waterfowl, and migratory birds, its seasonal wetlands support diverse plant and invertebrate communities, play a role in flood attenuation, act as traps for nutrients. store and recharge groundwater. and are valued recreational lands. Most of the restoration of prairie potholes has only occurred since the 1980's, with few follow-up studies performed and little postrestoration monitoring of these restorations. Monitoring and research of wetland restoration in the PPR is less common relative to the number of postrestoration studies done on other wetland types in the United States. This report is a synthesis of current knowledge of restored prairie pothole wetlands and makes suggestions for future wetland restoration-related research. In order to determine the benefits of restored wetlands, it is important to better understand how closely restored wetlands in the PPR resemble their natural analogues in terms of functions and values. The report categorizes PPR literature into five general sections: wildlife, vegetation, invertebrates, fish, and physical and chemical characteristics of restored wetlands. Each of these five sections has a summary of research and is divided into two parts: an overview of research and findings and regional case studies. Most PPR studies have focused on bird and plant communities, whereas research done on the functions of restored wetlands and studies concerning less visible fauna and physical and chemical characteristics are scarce. In addition, there is a scarcity of research in the western and northern portions or the PPR; most studio to date have been conducted in Iowa. Minnesota, or South Dakota.
Key Words: wetland restoration, prairie pothole region, PPR, literature review, wetland functions and values. postrestoration studies
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Knutsen, G.A., and Euliss, N.H., 2001, Wetland restoration in the Prairie Pothole Region of North America: A literature review: Biological Science Report USGS/BRD/BSR-2001-0006, viii, 54 p.","productDescription":"viii, 54 p.","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":396018,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/unnumbered/2000149/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":199312,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/unnumbered/2000149/report-thumb.jpg"}],"country":"Canada, United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e2e4b07f02db5e4a37","contributors":{"authors":[{"text":"Knutsen, Gregory A.","contributorId":35247,"corporation":false,"usgs":true,"family":"Knutsen","given":"Gregory","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":325179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Euliss, Ned H. Jr. ceuliss@usgs.gov","contributorId":2916,"corporation":false,"usgs":true,"family":"Euliss","given":"Ned","suffix":"Jr.","email":"ceuliss@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":false,"id":325178,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31368,"text":"ofr01132 - 2001 - Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California","interactions":[],"lastModifiedDate":"2023-06-27T13:29:26.24823","indexId":"ofr01132","displayToPublicDate":"2002-01-01T00:00:00","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":"2001-132","title":"Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California","docAbstract":"Open-File Report OF 01-132 contains a digital geologic map database of the Fifteenmile Valley 7.5’ quadrangle, San Bernardino County, California that includes:
\n1. ARC/INFO (Environmental Systems Research Institute, http://www.esri.com) version 7.2.1 coverages of the various elements of the geologic map.
\n\n2. A PostScript file to plot the geologic map on a topographic base, and containing a Correlation of Map Units diagram, a Description of Map Units, an index map, and a regional structure map.
\n\n3. Portable Document Format (.pdf) files of:
\n\na. This Readme; includes in Appendix I, data contained in fif_met.txt
\n\nb. The same graphic as plotted in 2 above. (Test plots have not produced 1:24,000-scale map sheets. Adobe Acrobat pagesize setting influences map scale.)
The Correlation of Map Units (CMU) and Description of Map Units (DMU) is in the editorial format of USGS Miscellaneous Investigations Series (I-series) maps. Within the geologic map data package, map units are identified by standard geologic map criteria such as formation-name, age, and lithology. Even though this is an author-prepared report, every attempt has been made to closely adhere to the stratigraphic nomenclature of the U. S. Geological Survey. Descriptions of units can be obtained by viewing or plotting the .pdf file (3b above) or plotting the postscript file (2 above). If roads in some areas, especially forest roads that parallel topographic contours, do not show well on plots of the geologic map, we recommend use of the USGS Fifteenmile Valley 7.5’ topographic quadrangle in conjunction with the geologic map.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr01132","collaboration":"Prepared in cooperation with the U.S. Forest Service (San Bernardino National Forest) and the California Division of Mines and Geology","usgsCitation":"Miller, F.K., and Matti, J.C., 2001, Geologic map of the Fifteenmile Valley 7.5' quadrangle, San Bernardino County, California: U.S. Geological Survey Open-File Report 2001-132, Readme: 24 p.; Metadata; Database; Map: PDF, 43.85 x 32.44 inches; Map: PostScript file, https://doi.org/10.3133/ofr01132.","productDescription":"Readme: 24 p.; Metadata; Database; Map: PDF, 43.85 x 32.44 inches; Map: PostScript file","numberOfPages":"24","additionalOnlineFiles":"Y","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":160851,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr01132.gif"},{"id":3030,"rank":7,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/0132/","linkFileType":{"id":5,"text":"html"}},{"id":282088,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2001/0132/fif_met.txt","linkFileType":{"id":2,"text":"txt"}},{"id":282090,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2001/0132/pdf/fif_map.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282087,"rank":6,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/of/2001/0132/pdf/readme.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282089,"rank":3,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2001/0132/fif.tar.gz","linkFileType":{"id":6,"text":"zip"}},{"id":282091,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2001/0132/fif_map.ps.gz","linkFileType":{"id":6,"text":"zip"}}],"scale":"24000","projection":"Lambert conformal conic projection","country":"United States","state":"California","county":"San Bernardino County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117.125,34.375 ], [ -117.125,34.5 ], [ -117.0,34.5 ], [ -117.0,34.375 ], [ -117.125,34.375 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db696e0b","contributors":{"authors":[{"text":"Miller, F. K.","contributorId":10803,"corporation":false,"usgs":true,"family":"Miller","given":"F.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":205802,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Matti, J. C.","contributorId":51712,"corporation":false,"usgs":true,"family":"Matti","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":205803,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31354,"text":"ofr9920E - 2001 - Stratigraphic section and selected semiquantitative chemistry, Meade Peak phosphatic shale member of Permian Phosphoria Formation, central part of Rasmussen Ridge, Caribou County, Idaho","interactions":[],"lastModifiedDate":"2023-05-05T18:25:20.837742","indexId":"ofr9920E","displayToPublicDate":"2002-01-01T00:00:00","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":"99-20","chapter":"E","title":"Stratigraphic section and selected semiquantitative chemistry, Meade Peak phosphatic shale member of Permian Phosphoria Formation, central part of Rasmussen Ridge, Caribou County, Idaho","docAbstract":"The U.S. Geological Survey (USGS) has studied the Permian Phosphoria Formation in southeastern Idaho and the entire Western U.S. Phosphate Field throughout much of the twentieth century. In response to a request by the U.S. Bureau of Land Management, a new series of resource, geological, and geoenvironmental studies was undertaken by the USGS in 1998. To accomplish these studies, the USGS has formed cooperative research relationships with two Federal agencies, the Bureau of Land Management and the U.S. Forest Service, tasked with land management and resource conservation on public lands; and with five private companies currently leasing or developing phosphate resources in southeastern Idaho. The companies are Agrium U.S. Inc. (Rasmussen Ridge mine) , Astaris LLC (Dry Valley mine), Rhodia Inc. (Wooley Valley mine, inactive), J.R. Simplot Company (Smoky Canyon mine), and Monsanto Co. (Enoch Valley mine). Some of the mineralogical research associated with this project is supported through a cooperative agreement with the Department of Geology and Geological Enginee ring, University of Idaho. Present studies consist of integrated, multidisciplinary research directed toward (1) resource and reserve estimations of phosphate in selected 7.5-minute quadrangles; (2) elemental residence, mineralogical and petrochemical characteristics; (3) mobilization and reaction pathways, transport, and fate of potentially toxic elements associated with the occurrence, development, and societal use of phosphate; (4) geophysical signatures; and (5) improving the understanding of deposit origin. Because raw data acquired during the project will require time to interpret, the data are released in open-file reports for prompt availability to other workers. Open-file reports associated with this series of studies are submitted to each of the Federal and industry cooperators for comment; however, the USGS is solely responsible for the data contained in the reports.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr9920E","usgsCitation":"Grauch, R., Tysdal, R.G., Johnson, E.A., Herring, J., and Desborough, G.A., 2001, Stratigraphic section and selected semiquantitative chemistry, Meade Peak phosphatic shale member of Permian Phosphoria Formation, central part of Rasmussen Ridge, Caribou County, Idaho: U.S. Geological Survey Open-File Report 99-20, 1 Plate: 36.00 x 48.00 inches, https://doi.org/10.3133/ofr9920E.","productDescription":"1 Plate: 36.00 x 48.00 inches","costCenters":[],"links":[{"id":160789,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":416782,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_45797.htm","linkFileType":{"id":5,"text":"html"}},{"id":3019,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/1999/ofr-99-0020-e/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Idaho","county":"Caribou","otherGeospatial":"Rasmussen Ridge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.424,\n 42.89\n ],\n [\n -111.424,\n 42.874\n ],\n [\n -111.402,\n 42.874\n ],\n [\n -111.402,\n 42.89\n ],\n [\n -111.424,\n 42.89\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db629c1a","contributors":{"authors":[{"text":"Grauch, R. I. 0000-0002-1763-0813","orcid":"https://orcid.org/0000-0002-1763-0813","contributorId":107698,"corporation":false,"usgs":true,"family":"Grauch","given":"R. I.","affiliations":[],"preferred":false,"id":205767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tysdal, R. G.","contributorId":8823,"corporation":false,"usgs":true,"family":"Tysdal","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":205763,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Johnson, E. A.","contributorId":87893,"corporation":false,"usgs":true,"family":"Johnson","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":205766,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Herring, J. R.","contributorId":43348,"corporation":false,"usgs":true,"family":"Herring","given":"J. R.","affiliations":[],"preferred":false,"id":205765,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Desborough, G. A.","contributorId":34527,"corporation":false,"usgs":true,"family":"Desborough","given":"G.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":205764,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":31407,"text":"ofr01294 - 2001 - Shaded-relief and color shaded-relief maps of the Willamette Valley, Oregon","interactions":[],"lastModifiedDate":"2023-06-27T13:30:46.427184","indexId":"ofr01294","displayToPublicDate":"2002-01-01T00:00:00","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":"2001-294","title":"Shaded-relief and color shaded-relief maps of the Willamette Valley, Oregon","docAbstract":"This Open-File Report is released as a digital map database. It includes PostScript plot files that contain images of the map sheets; the images also contain a brief explanation describing the geology and physiography of the study area. The digital map database is a compilation of newly published 10-m digital-elevation-model (DEM) data for western Oregon and represents the physiography of the Willamette Valley.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr01294","usgsCitation":"Givler, R., and Wells, R., 2001, Shaded-relief and color shaded-relief maps of the Willamette Valley, Oregon: U.S. Geological Survey Open-File Report 2001-294, Report: 15 p.; 4 Plates: 36.00 x 86.00 inches or smaller; Metadata; 2 Data Releases, https://doi.org/10.3133/ofr01294.","productDescription":"Report: 15 p.; 4 Plates: 36.00 x 86.00 inches or smaller; Metadata; 2 Data Releases","numberOfPages":"15","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":160365,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr01294.gif"},{"id":282722,"rank":11,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/wvs250.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282717,"rank":10,"type":{"id":30,"text":"Data Release"},"url":"https://pubs.usgs.gov/of/2001/0294/of01294db1.tar.gz","linkFileType":{"id":6,"text":"zip"}},{"id":282718,"rank":9,"type":{"id":30,"text":"Data Release"},"url":"https://pubs.usgs.gov/of/2001/0294/of01294db2.tar.gz","linkFileType":{"id":6,"text":"zip"}},{"id":282719,"rank":8,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/wvc125.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282720,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/wvs125.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282721,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/wvc250.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":282716,"rank":5,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2001/0294/metadata.txt","linkFileType":{"id":2,"text":"txt"}},{"id":282715,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/metadata.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":409817,"rank":12,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_43100.htm","linkFileType":{"id":5,"text":"html"}},{"id":282713,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/0294/","linkFileType":{"id":5,"text":"html"}},{"id":282714,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2001/0294/pdf/readme.pdf","linkFileType":{"id":1,"text":"pdf"}}],"scale":"125000","projection":"Universal Transverse Mercator Projection","country":"United States","state":"Oregon","otherGeospatial":"Williamette Valley","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -123.5,43.75 ], [ -123.5,45.75 ], [ -122.5,45.75 ], [ -122.5,43.75 ], [ -123.5,43.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a3a6","contributors":{"authors":[{"text":"Givler, R. W.","contributorId":78782,"corporation":false,"usgs":true,"family":"Givler","given":"R. W.","affiliations":[],"preferred":false,"id":205909,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"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":205908,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31400,"text":"ofr01264 - 2001 - Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes","interactions":[],"lastModifiedDate":"2021-12-20T19:22:37.702937","indexId":"ofr01264","displayToPublicDate":"2002-01-01T00:00:00","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":"2001-264","title":"Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes","docAbstract":"Three-dimensional velocity models for the basins along the coast of Washington and in Puget Lowland provide a means for better understanding the lateral variations in strong ground motions recorded there. We have compiled 16 sonic and 18 density logs from 22 oil test wells to help us determine the geometry and physical properties of the Cenozoic basins along coastal Washington. The depth ranges sampled by the test-well logs fall between 0.3 and 2.1 km. These well logs sample Quaternary to middle Eocene sedimentary rocks of the Quinault Formation, Montesano Formation, and Hoh rock assemblage. Most (18 or 82%) of the wells are from Grays Harbor County, and many of these are from the Ocean City area. These Grays Harbor County wells sample the Quinault Formation, Montesano Formation, and frequently bottom in the Hoh rock assemblage. These wells show that the sonic velocity and density normally increase significantly across the contacts between the Quinault or the Montesano Formations and the Hoh rock assemblage. Reflection coefficients calculated for vertically traveling compressional waves from the average velocities and densities for these units suggest that the top of the Hoh rock assemblage is a strong reflector of downward-propagating seismic waves: these reflection coefficients lie between 11 and 20%. Thus, this boundary may reflect seismic energy upward and trap a substantial portion of the seismic energy generated by future earthquakes within the Miocene and younger sedimentary basins found along the Washington coast.
Three wells from Jefferson County provide data for the Hoh rock assemblage for the entire length of the logs. One well (Eastern Petroleum Sniffer Forks #1), from the Forks area in Clallam County, also exclusively samples the Hoh rock assemblage. This report presents the locations, elevations, depths, stratigraphic, and other information for all the oil test wells, and provides plots showing the density and sonic velocities as a function of depth for each well log. We also present two-way traveltimes for 15 of the wells calculated from the sonic velocities. Average velocities and densities for the wells having both logs can be reasonably well related using a modified Gardner’s rule, with p=1825v(1/4), where p is the density (in kg/m3) and v is the sonic velocity (in km/s). In contrast, a similar analysis of published well logs from Puget Lowland is best matched by a Gardner’s rule of p=1730v(1/4), close to the p=1740v(1/4) proposed by Gardner et al. (1974).
Finally, we present laboratory measurements of compressional-wave velocity, shear-wave velocity, and density for 11 greywackes and 29 mafic rocks from the Olympic Peninsula and Puget Lowland. These units have significance for earthquake-hazard investigations in Puget Lowland as they dip eastward beneath the Lowland, forming the “bedrock” beneath much of the lowland. Average Vp/Vs ratios for the mafic rocks, mainly Crescent Formation volcanics, lie between 1.81 and 1.86. Average Vp/Vs ratios for the greywackes from the accretionary core complex in the Olympic Peninsula show greater scatter but lie between 1.77 and 1.88. Both the Olympic Peninsula mafic rocks and greywackes have lower shear-wave velocities than would be expected for a Poisson solid (Vp/Vs=1.732). Although the P-wave velocities and densities in the greywackes can be related by a Gardner’s rule of p=1720v(1/4), close to the p=1740v(1/4) proposed by Gardner et al. (1974), the velocities and densities of the mafic rocks are best related by a Gardner’s rule of p=1840v(1/4). Thus, the density/velocity relations are similar for the Puget Lowland well logs and greywackes from the Olympic Peninsula. Density/velocity relations are similar for the Washington coastal well logs and mafic rocks from the Olympic Peninsula, but differ from those of the Puget Lowland well logs and greywackes from the Olympic Peninsula.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr01264","usgsCitation":"Brocher, T.M., and Christensen, N.I., 2001, Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes: U.S. Geological Survey Open-File Report 2001-264, 39 p., https://doi.org/10.3133/ofr01264.","productDescription":"39 p.","numberOfPages":"40","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":59772,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2001/0264/pdf/of01-264.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":160343,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2001/0264/images/coverthb.jpg"},{"id":2518,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/0264/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Washington","otherGeospatial":"Olympic Peninsula","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124.87,46.83 ], [ -124.87,48.42 ], [ -122.14,48.42 ], [ -122.14,46.83 ], [ -124.87,46.83 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fce4b07f02db5f5b00","contributors":{"authors":[{"text":"Brocher, Thomas M. 0000-0002-9740-839X brocher@usgs.gov","orcid":"https://orcid.org/0000-0002-9740-839X","contributorId":262,"corporation":false,"usgs":true,"family":"Brocher","given":"Thomas","email":"brocher@usgs.gov","middleInitial":"M.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":205884,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Christensen, Nikolas I.","contributorId":95927,"corporation":false,"usgs":false,"family":"Christensen","given":"Nikolas","email":"","middleInitial":"I.","affiliations":[{"id":7001,"text":"Department of Earth and Atmospheric Sciences, Purdue University","active":true,"usgs":false}],"preferred":false,"id":205885,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":31373,"text":"ofr01151 - 2001 - Use of structural geology in exploration for and mining of sedimentary rock-hosted Au deposits","interactions":[],"lastModifiedDate":"2023-06-27T13:03:53.334645","indexId":"ofr01151","displayToPublicDate":"2002-01-01T00:00:00","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":"2001-151","title":"Use of structural geology in exploration for and mining of sedimentary rock-hosted Au deposits","docAbstract":"Structural geology is an important component in regional-, district- and orebody-scale exploration and development of sedimentary rock-hosted Au deposits. Identification of timing of important structural events in an ore district allows analysis and classification of fluid conduits and construction of genetic models for ore formation. The most practical uses of structural geology deal with measurement and definition of various elements that comprise orebodies, which can then be directly applied to ore-reserve estimation, ground control, grade control, safety issues, and mine planning. District- and regional-scale structural studies are directly applicable to long-term strategic planning, economic analysis, and land ownership. Orebodies in sedimentary rock-hosted Au deposits are discrete, hypogene, epigenetic masses usually hosted in a fault zone, breccia mass, or lithologic bed or unit. These attributes allow structural geology to be directly applied to the mining and exploration of sedimentary rock-hosted Au deposits. Internal constituents in orebodies reflect unique episodes relating to ore formation. The main internal constituents in orebodies are ore minerals, gangue, and alteration minerals that usually are mixed with one another in complex patterns, the relations among which may be used to interpret the processes of orebody formation and control. Controls of orebody location and shape usually are due to structural dilatant zones caused by changes in attitude, splays, lithologic contacts, and intersections of the host conduit or unit. In addition, conceptual parameters such as district fabric, predictable distances, and stacking also are used to understand the geometry of orebodies. Controls in ore districts and location and geometry of orebodies in ore districts can be predicted to various degrees by using a number of qualitative concepts such as internal and external orebody plunges, district plunge, district stacking, conduit classification, geochemical, geobarometric and geothermal gradients, and tectonic warps. These concepts have practical and empirical application in most mining districts where they are of use in the exploration for ore, but are of such broad and general application that they may not represent known or inferred ore formation processes. Close spatial relation among some sedimentary rock- hosted Au deposits and their host structures suggests that the structures and the orebodies are genetically linked because they may have shared the same developmental history. Examples of probable syn-deformational genesis and structural control of sedimentary rock-hosted Au deposits are in the large Betze deposit in the Carlin trend, Nevada and in the Lannigou, Jinlongshan, and Maanqiao Au deposits, China.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr01151","usgsCitation":"Peters, S., 2001, Use of structural geology in exploration for and mining of sedimentary rock-hosted Au deposits: U.S. Geological Survey Open-File Report 2001-151, 39 p., https://doi.org/10.3133/ofr01151.","productDescription":"39 p.","numberOfPages":"40","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":163454,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr01151.jpg"},{"id":282431,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2001/0151/pdf/of01-151.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":3049,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/0151/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af5e4b07f02db69220e","contributors":{"authors":[{"text":"Peters, Stephen G. speters@usgs.gov","contributorId":2793,"corporation":false,"usgs":true,"family":"Peters","given":"Stephen G.","email":"speters@usgs.gov","affiliations":[{"id":596,"text":"U.S. Geological Survey National Center","active":false,"usgs":true}],"preferred":false,"id":205814,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":31392,"text":"ofr01230 - 2001 - Automated remote digital imaging system (ARDIS): applications for monitoring dust emissions in the Mojave Desert, California","interactions":[],"lastModifiedDate":"2012-02-02T00:09:18","indexId":"ofr01230","displayToPublicDate":"2002-01-01T00:00:00","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":"2001-230","title":"Automated remote digital imaging system (ARDIS): applications for monitoring dust emissions in the Mojave Desert, California","language":"ENGLISH","doi":"10.3133/ofr01230","usgsCitation":"Tigges, R.K., Slides, S., and Ohms, M., 2001, Automated remote digital imaging system (ARDIS): applications for monitoring dust emissions in the Mojave Desert, California (Version 1.0): U.S. Geological Survey Open-File Report 2001-230, 72 p., https://doi.org/10.3133/ofr01230.","productDescription":"72 p.","costCenters":[],"links":[{"id":163462,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":3064,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2001/ofr-01-0230/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa9e4b07f02db6680c0","contributors":{"authors":[{"text":"Tigges, Richard K.","contributorId":23993,"corporation":false,"usgs":true,"family":"Tigges","given":"Richard","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":205870,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Slides, Stuart","contributorId":22008,"corporation":false,"usgs":true,"family":"Slides","given":"Stuart","email":"","affiliations":[],"preferred":false,"id":205869,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ohms, Mark","contributorId":55052,"corporation":false,"usgs":true,"family":"Ohms","given":"Mark","email":"","affiliations":[],"preferred":false,"id":205871,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":30968,"text":"wri014218 - 2001 - Simulation of ground-water flow in the Potomac-Raritan-Magothy aquifer system near the Defense Supply Center Philadelphia, and the Point Breeze Refinery, southern Philadelphia County, Pennsylvania","interactions":[],"lastModifiedDate":"2018-02-26T15:47:01","indexId":"wri014218","displayToPublicDate":"2002-01-01T00:00:00","publicationYear":"2001","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2001-4218","title":"Simulation of ground-water flow in the Potomac-Raritan-Magothy aquifer system near the Defense Supply Center Philadelphia, and the Point Breeze Refinery, southern Philadelphia County, Pennsylvania","docAbstract":"Ground-water flow in the Potomac-Raritan- Magothy aquifer system (PRM) in south Philadelphia and adjacent southwestern New Jersey was simulated by use of a three-dimensional, seven-layer finite-difference numerical flow model. The simulation was run from 1900, which was prior to groundwater development, through 1995 with 21 stress periods. The focus of the modeling was on a smaller area of concern in south Philadelphia in the vicinity of the Defense Supply Center Philadelphia (DSCP) and the Point Breeze Refinery (PBR). In order to adequately simulate the ground-water flow system in the area of concern, a much larger area was modeled that included parts of New Jersey where significant ground-water withdrawals, which affect water levels in southern Philadelphia, had occurred in the past. At issue in the area of concern is a hydrocarbon plume of unknown origin and time of release.
The ground-water-flow system was simulated to estimate past water-level altitudes in and near the area of concern and to determine the effect of the Packer Avenue sewer, which lies south of the DSCP, on the ground-water-flow system. Simulated water-level altitudes for the lower sand unit of the PRM on the DSCP prior to 1945 ranged from pre-development, unstressed altitudes to 3 feet below sea level. Simulated water-level altitudes for the lower sand unit ranged from 3 to 7 feet below sea level from 1946 to 1954, from 6 to 10 feet below sea level from 1955 to 1968, and from 9 to 11 feet below sea level from 1969 to 1978. The lowest simulated water-level altitude on the DSCP was 10.69 feet below sea level near the end of 1974. Model simulations indicate ground water was infiltrating the Packer Avenue sewer prior to approximately 1947 or 1948. Subsequent to that time, simulated ground-water-level altitudes were lower than the bottom of the sewer.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri014218","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency","usgsCitation":"Schreffler, C.L., 2001, Simulation of ground-water flow in the Potomac-Raritan-Magothy aquifer system near the Defense Supply Center Philadelphia, and the Point Breeze Refinery, southern Philadelphia County, Pennsylvania: U.S. Geological Survey Water-Resources Investigations Report 2001-4218, vi, 48 p., https://doi.org/10.3133/wri014218.","productDescription":"vi, 48 p.","onlineOnly":"Y","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":159965,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/2001/4218/coverthb.jpg"},{"id":351041,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2001/4218/wri20014218.pdf","text":"Report","size":"2.16 MB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 2001-4218"}],"contact":"Director, Pennsylvania Water Science Center
U.S. Geological Survey
215 Limekiln Road
New Cumberland, PA 17070
A primary focus of coastal science during the past 3 decades has been the question: How does anthropogenic nutrient enrichment cause change in the structure or function of nearshore coastal ecosystems? This theme of environmental science is recent, so our conceptual model of the coastal eutrophication problem continues to change rapidly. In this review, I suggest that the early (Phase I) conceptual model was strongly influenced by limnologists, who began intense study of lake eutrophication by the 1960s. The Phase I model emphasized changing nutrient input as a signal, and responses to that signal as increased phytoplankton biomass and primary production, decomposition of phytoplankton-derived organic matter, and enhanced depletion of oxygen from bottom waters. Coastal research in recent decades has identified key differences in the responses of lakes and coastal-estuarine ecosystems to nutrient enrichment. The contemporary (Phase II) conceptual model reflects those differences and includes explicit recognition of (1) system-specific attributes that act as a filter to modulate the responses to enrichment (leading to large differences among estuarine-coastal systems in their sensitivity to nutrient enrichment); and (2) a complex suite of direct and indirect responses including linked changes in: water transparency, distribution of vascular plants and biomass of macroalgae, sediment biogeochemistry and nutrient cycling, nutrient ratios and their regulation of phytoplankton community composition, frequency of toxic/harmful algal blooms, habitat quality for metazoans, reproduction/growth/survival of pelagic and benthic invertebrates, and subtle changes such as shifts in the seasonality of ecosystem functions. Each aspect of the Phase II model is illustrated here with examples from coastal ecosystems around the world. In the last section of this review I present one vision of the next (Phase III) stage in the evolution of our conceptual model, organized around 5 questions that will guide coastal science in the early 21st century: (1) How do system-specific attributes constrain or amplify the responses of coastal ecosystems to nutrient enrichment? (2) How does nutrient enrichment interact with other stressors (toxic contaminants, fishing harvest, aquaculture, nonindigenous species, habitat loss, climate change, hydrologic manipulations) to change coastal ecosystems? (3) How are responses to multiple stressors linked? (4) How does human-induced change in the coastal zone impact the Earth system as habitat for humanity and other species? (5) How can a deeper scientific understanding of the coastal eutrophication problem be applied to develop tools for building strategies at ecosystem restoration or rehabilitation?
","language":"English","publisher":"Inter-Research","doi":"10.3354/meps210223","usgsCitation":"Cloern, J.E., 2001, Our evolving conceptual model of the coastal eutrophication problem: Marine Ecology Progress Series, v. 210, p. 223-253, https://doi.org/10.3354/meps210223.","productDescription":"31 p.","startPage":"223","endPage":"253","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":478817,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3354/meps210223","text":"Publisher Index Page"},{"id":314342,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"210","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5698d4cfe4b0fbd3f7fa4c55","contributors":{"authors":[{"text":"Cloern, James E. 0000-0002-5880-6862 jecloern@usgs.gov","orcid":"https://orcid.org/0000-0002-5880-6862","contributorId":1488,"corporation":false,"usgs":true,"family":"Cloern","given":"James","email":"jecloern@usgs.gov","middleInitial":"E.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":588722,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70211115,"text":"70211115 - 2001 - Age constraints on fluid inclusions in calcite at Yucca Mountain","interactions":[],"lastModifiedDate":"2020-07-15T00:01:48.127325","indexId":"70211115","displayToPublicDate":"2001-12-31T18:56:08","publicationYear":"2001","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Age constraints on fluid inclusions in calcite at Yucca Mountain","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the 9th international high-level radioactive waste management conference (IHLRWM)","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"9th International High-level Radioactive Waste Management Conference (IHLRWM)","conferenceDate":"April 29 - May 3, 2001","conferenceLocation":"Las Vegas, NV","language":"English","publisher":"American Nuclear Society","usgsCitation":"Neymark, L., Amelin, Y.V., Paces, J.B., Peterman, Z.E., and Whelan, J., 2001, Age constraints on fluid inclusions in calcite at Yucca Mountain, in Proceedings of the 9th international high-level radioactive waste management conference (IHLRWM), Las Vegas, NV, April 29 - May 3, 2001, 4 p.","productDescription":"4 p.","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":376401,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":376400,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.osti.gov/servlets/purl/794113"}],"country":"United States","state":"Nevada","otherGeospatial":"Yucca Mountain","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.48254394531249,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.91352904330221\n ],\n [\n -116.43602371215822,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.95757376878687\n ],\n [\n -116.48254394531249,\n 36.91352904330221\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Neymark, Leonid A. 0000-0003-4190-0278 lneymark@usgs.gov","orcid":"https://orcid.org/0000-0003-4190-0278","contributorId":140338,"corporation":false,"usgs":true,"family":"Neymark","given":"Leonid A.","email":"lneymark@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":792823,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Amelin, Yuri V.","contributorId":96863,"corporation":false,"usgs":true,"family":"Amelin","given":"Yuri","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":792824,"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":792825,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Peterman, Zell E. 0000-0002-5694-8082 peterman@usgs.gov","orcid":"https://orcid.org/0000-0002-5694-8082","contributorId":167699,"corporation":false,"usgs":true,"family":"Peterman","given":"Zell","email":"peterman@usgs.gov","middleInitial":"E.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":792826,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Whelan, Joseph F.","contributorId":39425,"corporation":false,"usgs":true,"family":"Whelan","given":"Joseph F.","affiliations":[],"preferred":false,"id":792827,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70204100,"text":"70204100 - 2001 - Patterns and processes of wetland loss in coastal Louisiana are complex: A reply to Turner 2001. Estimating the indirect effects of hydrologic change on wetland loss: If the Earth is curved, then how would we know it? ","interactions":[],"lastModifiedDate":"2019-07-05T15:20:12","indexId":"70204100","displayToPublicDate":"2001-12-31T18:43:18","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1583,"text":"Estuaries","active":true,"publicationSubtype":{"id":10}},"title":"Patterns and processes of wetland loss in coastal Louisiana are complex: A reply to Turner 2001. Estimating the indirect effects of hydrologic change on wetland loss: If the Earth is curved, then how would we know it? ","docAbstract":"The coastal wetlands of Louisiana comprise a vast expanse of marine to freshwater wetland plant communities interspersed w-ith shallow bays and bayous. These wetlands were built by processes associated with the present-day Mississippi and Atchatfalaya River deltas and older distributaries occupied by the river over the past 7,000 }rears. The high rates of wetland loss identified in this system during the 20th century have serious consequences for living resources (Boesch et al. 1994) and coastal residents, and they affect our ability to maintain navigation and flood control. The restoration and management response to this problem must be grounded in a sound understanding of the causative factors. The system has been highly altered by river levees, roads and railway embankments, impoundments, and canals of many dimensions dredged for a variety of purposes. These changes have been imposed on a landscape that is essentially the result of a delicate natural balance between wetland building processes and compaction, subsidence, and sea-level rise. Many now recognize that coastal wetlands can cope with relatively high rates of subsidence and sea-level rise, as long as the processes that ensure wetland sustainability through vertical accumulation of substrate remain unimpaired (Boesch et al. 2000).
The challenge facing both the scientific community and coastal resource managers in Louisiana is to look to the future. We must use our understanding of the problem and how it evolved to develop a multi-use ecosystem management plan, and some efforts have been made by state and federal agencies towards this goal (LCWCRTF & WCRA 1998). The present discussions (Turner 1997, 2001; Day et al. 2000; Gosselink 2001) demonstrate the complexity of the issues faced in Louisiana. While such discourse is common in the scientific community where varied approaches and interpretations are a sign of vitality, it is helpful to be clear about the state of knowledge and what levels of uncertainty exist. We seek to clarify some of the issues that have been raised in the discussion, recognizing that our best-available science cannot yet resolve many of them as completely as all would like.
","language":"English","publisher":"Springer Link","doi":"10.2307/1353263","usgsCitation":"Day, J.W., Shaffer, G., Reed, D.J., Cahoon, D.R., Britsch, L.D., and Hawes, S., 2001, Patterns and processes of wetland loss in coastal Louisiana are complex: A reply to Turner 2001. Estimating the indirect effects of hydrologic change on wetland loss: If the Earth is curved, then how would we know it? : Estuaries, v. 24, no. 2, p. 647-651, https://doi.org/10.2307/1353263.","productDescription":"5 p.","startPage":"647","endPage":"651","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":365302,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Louisiana","otherGeospatial":"Louisiana Coastal Zones, Mississippi River Delta","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -90.65917968749999,\n 30.619004797647808\n ],\n [\n -91.16455078125,\n 29.973970240516614\n ],\n [\n -91.7578125,\n 29.99300228455108\n ],\n [\n -93.6474609375,\n 30.06909396443887\n ],\n [\n -93.8671875,\n 29.859701442126756\n ],\n [\n -93.7353515625,\n 29.6880527498568\n ],\n [\n -93.49365234375,\n 29.707139348134145\n ],\n [\n -92.87841796875,\n 29.554345125748267\n ],\n [\n -92.08740234375,\n 29.401319510041485\n ],\n [\n -91.62597656249999,\n 29.458731185355344\n ],\n [\n -91.01074218749999,\n 29.094577077511826\n ],\n [\n -90.41748046874999,\n 29.248063243796576\n ],\n [\n -90.28564453124999,\n 28.9600886880068\n ],\n [\n -89.9560546875,\n 29.11377539511439\n ],\n [\n -89.912109375,\n 29.401319510041485\n ],\n [\n -89.736328125,\n 29.248063243796576\n ],\n [\n -89.1650390625,\n 28.92163128242129\n ],\n [\n -88.87939453125,\n 29.152161283318915\n ],\n [\n -89.1650390625,\n 30.012030680358613\n ],\n [\n -89.6484375,\n 30.183121842195515\n ],\n [\n -89.8681640625,\n 30.637912028341123\n ],\n [\n -90.65917968749999,\n 30.619004797647808\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"24","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Day, John W.","contributorId":200323,"corporation":false,"usgs":false,"family":"Day","given":"John","email":"","middleInitial":"W.","affiliations":[{"id":5115,"text":"Louisiana State University","active":true,"usgs":false}],"preferred":false,"id":765504,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shaffer, Gary P.","contributorId":72688,"corporation":false,"usgs":true,"family":"Shaffer","given":"Gary P.","affiliations":[],"preferred":false,"id":765505,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reed, Denise J.","contributorId":71903,"corporation":false,"usgs":true,"family":"Reed","given":"Denise","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":765506,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cahoon, Donald R. 0000-0002-2591-5667 dcahoon@usgs.gov","orcid":"https://orcid.org/0000-0002-2591-5667","contributorId":3791,"corporation":false,"usgs":true,"family":"Cahoon","given":"Donald","email":"dcahoon@usgs.gov","middleInitial":"R.","affiliations":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":765507,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Britsch, Louis D.","contributorId":78024,"corporation":false,"usgs":true,"family":"Britsch","given":"Louis","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":765508,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Hawes, Suzanne","contributorId":51376,"corporation":false,"usgs":true,"family":"Hawes","given":"Suzanne","email":"","affiliations":[],"preferred":false,"id":765509,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70207847,"text":"70207847 - 2001 - Using high-resolution aeromagnetic surveys to map subsurface hydrogeology in sediment-filled basins: A case study over the Rio Grande Rift, Central New Mexico, USA","interactions":[],"lastModifiedDate":"2020-01-15T15:54:47","indexId":"70207847","displayToPublicDate":"2001-12-31T15:47:14","publicationYear":"2001","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1612,"text":"Exploration Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Using high-resolution aeromagnetic surveys to map subsurface hydrogeology in sediment-filled basins: A case study over the Rio Grande Rift, Central New Mexico, USA","docAbstract":"High-resolution aeromagnetic surveys were acquired for the Albuquerque basin in the central Rio Grande rift, a basin filled with poorly consolidated sediments. The surveys proved successful in efficiently and economically mapping previously unknown hydrogeologic features of the shallow subsurface. This success suggests that aeromagnetic methods may be useful in hydrogeologic studies of other sediment-filled basins.
The aeromagnetic surveys were used primarily to delineate buried igneous rocks and to locate faults within the basin fill, both important for understanding the subsurface hydrogeology. Buried igneous rocks were recognized from their high-frequency, high-amplitude magnetic responses and characteristic map patterns. The horizontal-gradient and local wavenumber methods were used to obtain estimates of their source depths.
The aeromagnetic surveys were also successfully used to locate faults within the basin fill. Magnetic signatures associated with faults are produced by the juxtaposition of sediments having differing magnetic properties rather than the products of secondary processes. Expression of faults is abundant throughout the basin, revealing patterns that cannot be mapped at the surface due to widespread cover.
A fault signature recognized in the high-resolution data that has multiple inflection points is best explained by a fault with a thin magnetic layer on the upthrown block and thick magnetic layer on the downthrown block, called the thin-thick layers model. Geologically, this signature indicates erosion of the upthrown block or a growth-faulting scenario: fault-controlled sedimentation for faults that offset sediments, and successive accumulation of basalt on the downthrown block for faults that offset volcanic rocks.
","language":"English","publisher":"Taylor & Francis","doi":"10.1071/EG01209","usgsCitation":"Grauch, V.J., 2001, Using high-resolution aeromagnetic surveys to map subsurface hydrogeology in sediment-filled basins: A case study over the Rio Grande Rift, Central New Mexico, USA: Exploration Geophysics, v. 32, no. 3-4, p. 209-213, https://doi.org/10.1071/EG01209.","productDescription":"5 p.","startPage":"209","endPage":"213","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":371275,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Mexico ","otherGeospatial":"Rio Grande Rift","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -107.083740234375,\n 33.44977658311846\n ],\n [\n -105.62255859375,\n 33.44977658311846\n ],\n [\n -105.62255859375,\n 36.12900165569652\n ],\n [\n -107.083740234375,\n 36.12900165569652\n ],\n [\n -107.083740234375,\n 33.44977658311846\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"32","issue":"3-4","noUsgsAuthors":false,"publicationDate":"2018-12-06","publicationStatus":"PW","contributors":{"authors":[{"text":"Grauch, V. J. S. 0000-0002-0761-3489 tien@usgs.gov","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":886,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"tien@usgs.gov","middleInitial":"J. S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":779523,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70208275,"text":"70208275 - 2001 - Changes in density and height of the shrub baccharis halimifolia following burning in coastal tallgrass prairie","interactions":[],"lastModifiedDate":"2020-01-31T15:52:21","indexId":"70208275","displayToPublicDate":"2001-12-31T15:38:59","publicationYear":"2001","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"displayTitle":"Changes in density and height of the shrub baccharis halimifolia following burning in coastal tallgrass prairie","title":"Changes in density and height of the shrub baccharis halimifolia following burning in coastal tallgrass prairie","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the seventeenth North American Prairie Conference : seeds for the future, roots of the past","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"The Seventeenth North American Prairie Conference: Seeds for the Future, Roots of the Past","conferenceDate":"Jul 16-20, 2000","conferenceLocation":"Mason City, IA","language":"English","publisher":"North Iowa Area Community College","usgsCitation":"Allain, L.K., and Grace, J.B., 2001, Changes in density and height of the shrub baccharis halimifolia following burning in coastal tallgrass prairie, in Proceedings of the seventeenth North American Prairie Conference : seeds for the future, roots of the past, Mason City, IA, Jul 16-20, 2000, p. 66-72.","productDescription":"7 p.","startPage":"66","endPage":"72","costCenters":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"links":[{"id":371889,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","otherGeospatial":"Brazoria National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -95.20614624023438,\n 29.21211052272621\n ],\n [\n -95.24494171142578,\n 29.178543264303006\n ],\n [\n -95.31309127807617,\n 29.147663678545964\n ],\n [\n -95.3096580505371,\n 29.139567493778735\n ],\n [\n -95.30982971191406,\n 29.133270020196697\n ],\n [\n -95.30553817749023,\n 29.131620618121453\n ],\n [\n -95.3009033203125,\n 29.123523169583518\n ],\n [\n -95.30725479125977,\n 29.11842444893104\n ],\n [\n -95.30296325683594,\n 29.110625916710564\n ],\n [\n -95.29609680175781,\n 29.11002600513186\n ],\n [\n -95.29935836791992,\n 29.09382707056047\n ],\n [\n -95.29129028320312,\n 29.089026896709594\n ],\n [\n -95.28287887573242,\n 29.095477078642013\n ],\n [\n -95.28717041015625,\n 29.09757705068449\n ],\n [\n -95.27944564819336,\n 29.10162687580198\n ],\n [\n -95.26914596557617,\n 29.091277006062477\n ],\n [\n -95.2763557434082,\n 29.086476713344148\n ],\n [\n -95.26845932006836,\n 29.084826561048416\n ],\n [\n -95.2650260925293,\n 29.085126590704917\n ],\n [\n -95.26674270629883,\n 29.07267462559901\n ],\n [\n -95.26948928833008,\n 29.02555358063341\n ],\n [\n -95.27481079101561,\n 29.02300182715198\n ],\n [\n -95.26674270629883,\n 29.018348467297688\n ],\n [\n -95.28305053710936,\n 29.008290489466816\n ],\n [\n -95.29781341552733,\n 28.995078523590983\n ],\n [\n -95.29523849487305,\n 28.990874362122028\n ],\n [\n -95.28768539428711,\n 28.987270659094104\n ],\n [\n -95.28030395507812,\n 28.976008277785088\n ],\n [\n -95.26262283325195,\n 28.986970344839843\n ],\n [\n -95.23893356323242,\n 28.997180540218203\n ],\n [\n -95.23481369018555,\n 29.001834853503784\n ],\n [\n -95.20957946777344,\n 29.029005852617946\n ],\n [\n -95.1716423034668,\n 29.079875945547673\n ],\n [\n -95.16031265258789,\n 29.105826526150466\n ],\n [\n -95.16632080078124,\n 29.114375284832047\n ],\n [\n -95.15361785888672,\n 29.153810355730762\n ],\n [\n -95.14915466308594,\n 29.1815407876692\n ],\n [\n -95.15327453613281,\n 29.193979573726136\n ],\n [\n -95.16014099121094,\n 29.196377238569582\n ],\n [\n -95.20614624023438,\n 29.21211052272621\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Allain, Larry K. 0000-0002-7717-9761 allainl@usgs.gov","orcid":"https://orcid.org/0000-0002-7717-9761","contributorId":2414,"corporation":false,"usgs":true,"family":"Allain","given":"Larry","email":"allainl@usgs.gov","middleInitial":"K.","affiliations":[{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true}],"preferred":true,"id":781217,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grace, James B. 0000-0001-6374-4726 gracej@usgs.gov","orcid":"https://orcid.org/0000-0001-6374-4726","contributorId":884,"corporation":false,"usgs":true,"family":"Grace","given":"James","email":"gracej@usgs.gov","middleInitial":"B.","affiliations":[{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":455,"text":"National Wetlands Research Center","active":true,"usgs":true},{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":781218,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70217280,"text":"70217280 - 2001 - Very different crustal response to extreme extension in the southern Basin and Range and Colorado Plateau transition","interactions":[],"lastModifiedDate":"2021-01-14T21:47:40.030256","indexId":"70217280","displayToPublicDate":"2001-12-31T15:35:14","publicationYear":"2001","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Very different crustal response to extreme extension in the southern Basin and Range and Colorado Plateau transition","docAbstract":"Clustered about the southwest edge of the Colorado Plateau lie many highly extended terranes. Among these are metamorphic core complexes, distinguished by low-angle normal faults with sufficient offset to expose middle crustal rocks at higher elevation relative to the surrounding areas. About 150 km to the southwest, strong extension in the Salton Trough manifests itself very differently; high-angle normal faults form deep basins, with the strongest extension causing subsidence beneath sea level. We ask why strong extension takes such different forms, and, to help answer the question, we take advantage of seismic and gravity profiles that cross through the Salton Trough, metamorphic core complexes, and the Colorado Plateau. We propose that the relative rate of extension vs. intrusion of crust by magmatism and crustal flow controls the extensional style. We further show that conditions may have been ideal for core complex formation along the edges of the Colorado Plateau because its thick crust and high elevation provided a source of crustal flow and the pressure gradient to drive the flow.
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