Chemical analyses of samples for 19 postorogenic plutons from the southeastern Arabian Shield show that these rocks have average potassium/rubidium ratios (162) and average rubidium/strontium ratios (11.8) characteristic of highly evolved granites. Most of the analyzed samples are peraluminous. Three plutons are physically similar in terms of shape and megascopic textural zonation to peralkaline complexes in the northeastern part of the Shield, but none of the samples from these plutons is peralkaline. However, these plutons do contain the least-evolved samples.
\nZinc, yttrium, uranium, thorium, and possibly copper, each occur in anomalously high concentrations in at least one pluton relative to contents typically cited for granite. The average regional concentrations of copper and zinc are anomalously high. These facts suggest at least a moderate potential for mineralization in the southeastern part of the Shield. Good correlations (r of 0.5 to 0.8) between uranium, thorium, yttrium, and rubidium and an excellent correlation (r=0.98) between uranium and radium-equivalent uranium suggest that secondary deposits of these elements are unlikely and that magmatic deposits, especially of a pegmatitic nature, are more likely.
\nConcentrations of some major elements and several trace elements covary with sample location as measured by latitude and longitude. This fact is interpreted to reflect regional variations in the protolith that have been proposed on the basis of lead isotopic data. The chemical variations suggest a largely oceanic crustal component for granites in the southwestern part of the southeastern Shield and a largely continental crustal component to the northeast.
\nFurther quantitative analysis is recommended to verify and accurately delineate anomalous concentrations of trace elements. Trend surface analysis of all available data for postorogenic granites from the eastern Arabian Shield is suggested as a method for testing regional variations in the protolith that might control locations of highly favorable areas of ore deposition.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr83486","usgsCitation":"Stuckless, J.S., VanTrump, G., Christiansen, E.H., Bush, C.A., Bunker, C.M., and Bartel, A., 1983, Preliminary assessment of the geochemistry and mineral favorability of the postorogenic granites of the southeastern Arabian Shield, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 83-486, Report: ii, 44 p., ill.; maps: 28 cm., https://doi.org/10.3133/ofr83486.","productDescription":"Report: ii, 44 p., ill.; maps: 28 cm.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":140460,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0486/report-thumb.jpg"},{"id":34835,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0486/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"Saudi Arabia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 42.5,\n 17\n ],\n [\n 42.5,\n 24\n ],\n [\n 45.5,\n 24\n ],\n [\n 45.5,\n 17\n ],\n [\n 42.5,\n 17\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aaae4b07f02db6695b7","contributors":{"authors":[{"text":"Stuckless, John S. 0000-0002-7536-0444 jstuckless@usgs.gov","orcid":"https://orcid.org/0000-0002-7536-0444","contributorId":4974,"corporation":false,"usgs":true,"family":"Stuckless","given":"John","email":"jstuckless@usgs.gov","middleInitial":"S.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":155549,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"VanTrump, G.","contributorId":95869,"corporation":false,"usgs":true,"family":"VanTrump","given":"G.","affiliations":[],"preferred":false,"id":155554,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christiansen, E. H.","contributorId":65077,"corporation":false,"usgs":true,"family":"Christiansen","given":"E.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":155552,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bush, C. A.","contributorId":43344,"corporation":false,"usgs":true,"family":"Bush","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":155551,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bunker, C. M.","contributorId":75138,"corporation":false,"usgs":true,"family":"Bunker","given":"C.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":155553,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bartel, A.J.","contributorId":34508,"corporation":false,"usgs":true,"family":"Bartel","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":155550,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":1329,"text":"wsp2201 - 1983 - Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona","interactions":[{"subject":{"id":8772,"text":"ofr81911 - 1981 - Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona","indexId":"ofr81911","publicationYear":"1981","noYear":false,"title":"Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona"},"predicate":"SUPERSEDED_BY","object":{"id":1329,"text":"wsp2201 - 1983 - Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona","indexId":"wsp2201","publicationYear":"1983","noYear":false,"title":"Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona"},"id":1}],"lastModifiedDate":"2012-02-02T00:05:18","indexId":"wsp2201","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2201","title":"Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona","docAbstract":"The N aquifer is the main source of water in the 5,400-square-mile Black Mesa area in the Navajo and Hopi Indian Reservations in northeastern Arizona. The N aquifer consists of the Navajo Sandstone and parts of the underlying Kayenta Formation and Wingate Sandstone of Jurassic and Triassic age. Maximum saturated thickness of the aquifer is about 1,050 feet in the northwestern part of the area, and the aquifer thins to extinction to the southeast. Water is under confined conditions in the central 3,300 square miles of the area. To the east, north, and west of Black Mesa, the aquifer is exposed at the surface, and water is unconfined. The aquifer was in equilibrium before about 1965. Recharge of about 13,000 acre-feet per year was balanced primarily by discharge near Moenkopi Wash and Laguna Creek and by evapotranspiration. At least 180 million acre-feet of water was in storage. The estimated average hydraulic conductivity of the aquifer is 0.65 foot per day. The confined storage coefficient is estimated to be about 0.0004 where the aquifer is thickest, and the estimated unconfined storage coefficient ranges from 0.10 to 0.15. \r\n\r\nGround-water withdrawals that averaged 5,300 acre-feet per year from 1976 to 1979 have caused water levels to decline in wells in the confined part of the aquifer. Withdrawals include an average of 3,700 acre-feet per year to supply a coal-slurry pipeline from a coal mine on Black Mesa. Six observation wells equipped with water-level recorders have been used to monitor aquifer response. The water level in one well 32 miles south of the mine declined 17 feet from 1972 through 1979 and 3.5 feet during 1979. \r\n\r\nA mathematical model of the N aquifer was developed and calibrated for equilibrium and nonequilibrium conditions. The model was used in part to improve estimates of aquifer characteristics and the water budget, and it successfully reproduced the observed response of the aquifer through 1979. The model results indicate that about 95 percent of the 44,000 acre-feet of water pumped from 1965 to 1979 was withdrawn from storage, but the reduction amounted to less than 0.03 percent of total storage. Water-level declines through 1979 were estimated to be more than 100 feet in an area of 200 square miles. Four projections of future water-level changes were made using the model. The most probable projection indicates that water-level declines would exceed 100 feet in an area of 440 square miles by 2001. Most of the decline would be recovered within a few years if withdrawals at the mine ceased. By 1990, however, municipal-supply pumpage is expected to exceed pumpage at the mine, and this pumpage would continue to have significant impacts on water levels in the Black Mesa area.","language":"ENGLISH","publisher":"U.S. G.P.O.,","doi":"10.3133/wsp2201","usgsCitation":"Eychaner, J.H., 1983, Geohydrology and effects of water use in the Black Mesa area, Navajo and Hopi Indian Reservations, Arizona: U.S. Geological Survey Water Supply Paper 2201, vi, 26 p. :ill. ;28 cm., https://doi.org/10.3133/wsp2201.","productDescription":"vi, 26 p. :ill. ;28 cm.","costCenters":[],"links":[{"id":138019,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/2201/report-thumb.jpg"},{"id":26384,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/2201/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a731","contributors":{"authors":[{"text":"Eychaner, James H.","contributorId":102050,"corporation":false,"usgs":true,"family":"Eychaner","given":"James","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":143571,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7494,"text":"ofr83390 - 1983 - Saudi Arabian seismic deep-refraction profiles; final project report","interactions":[],"lastModifiedDate":"2012-02-02T00:06:04","indexId":"ofr83390","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-390","title":"Saudi Arabian seismic deep-refraction profiles; final project report","docAbstract":"In February 1978 a seismic deep-refraction profile was recorded by the U.S. Geological Survey along a 1000-km line across the Arabian Shield in western Saudi Arabia. The line begins in Mesozoic cover rocks near Riyadh on the Arabian Platform, leads southwesterly across three major Precambrian tectonic provinces, traverses Cenozoic rocks of the coastal plain near Jizan (Tihamat-Asir), and terminates at the outer edge of the Farasan Bank in the southern Red Sea. More than 500 surveyed recording sites were occupied, including 19 in the Farasan Islands. Six shot points were used: five on land, with most charges placed below the water table in drill holes, and one at sea, with charges placed on the sea floor and detonated from a ship. Slightly more than 61 metric tons of explosives were used in 19 discrete firings. \r\n\r\nSeismic energy was recorded by 100 newly-developed portable seismic stations deployed in approximately 200 km-long arrays for each firing. Each station consisted of a standard 2-Hz vertical component geophone coupled to a self-contained analog recording instrument equipped with a magnetic-tape cassette.\r\n\r\nIn this final report, we fully document the field and data-processing procedures and present the final seismogram data set as both a digital magnetic tape and as record sections for each shot point. Record sections include a normalized set of seismograms, reduced at 6 km/s, and a true-amplitude set, reduced at 8 km/s, which have been adjusted for amplifier gain, individual shot size, and distance from the shot point.\r\n\r\nAppendices give recorder station and shot information, digital data set descriptions, computer program listings, arrival times used in the interpretation, and a bibliography of reports published as a result of this project.\r\n\r\nWe used two-dimensional ray-tracing techniques in the data analysis, and our interpretation is based primarily on horizontally layered models. The Arabian Shield is composed, to first-order, of two layers, each about 20 km thick, with average velocities of 6.3 km/s and 7.0 km/s, respectively. At the western shield margin the crust thins to less than 20 km total thickness, beyond which the Red Sea shelf and coastal plain are interpreted to be underlain by oceanic crust.\r\n\r\nA major crustal lateral velocity inhomogeneity northeast of Sabhah in the Shammar Tectonic Province is interpreted as the suture zone of two crustal blocks of different composition. Several high-velocity anomalies in the upper crust correlate with mapped gneissic dome structures. Two intra-crustal reflectors at13 km depth are interpreted as the tops of mafic intrusives.\r\n\r\nThe Mohorovicic discontinuity beneath the shield varies from 43 km depth in the northeast with 8.2 km/s mantle velocity to 38 km depth in the southwest with 8.0 km/s mantle velocity. Two velocity discontinuities are identified in the upper mantle, at 59 and 70 km depth.\r\n\r\nWe suggest further work, including refined analyses of the data employing filtering and synthetic seismogram techniques, as well as consideration of attenuation properties. Extension of the seismic refraction profile to the Arabian Gulf and some short profiles perpendicular to the existing profile would be fruitful areas for future field work.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83390","usgsCitation":"Healy, J.H., Mooney, W.D., Blank, H., Gettings, M.E., Kohler, W., Lamson, R., and Leone, L., 1983, Saudi Arabian seismic deep-refraction profiles; final project report: U.S. Geological Survey Open-File Report 83-390, 434 p. ill., maps ;28 cm., https://doi.org/10.3133/ofr83390.","productDescription":"434 p. ill., maps ;28 cm.","costCenters":[],"links":[{"id":140466,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0390/report-thumb.jpg"},{"id":34937,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34938,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34939,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34940,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34941,"rank":404,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34942,"rank":405,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-6.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34943,"rank":406,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-7.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34944,"rank":407,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-8.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34945,"rank":408,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0390/plate-9.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":34946,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0390/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ee4b07f02db5fdb74","contributors":{"authors":[{"text":"Healy, J. H.","contributorId":48968,"corporation":false,"usgs":true,"family":"Healy","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":155877,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mooney, W. D.","contributorId":72376,"corporation":false,"usgs":true,"family":"Mooney","given":"W.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":155881,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Blank, H. R.","contributorId":50516,"corporation":false,"usgs":true,"family":"Blank","given":"H. R.","affiliations":[],"preferred":false,"id":155878,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gettings, M. E.","contributorId":25148,"corporation":false,"usgs":true,"family":"Gettings","given":"M.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":155876,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kohler, W.M.","contributorId":62999,"corporation":false,"usgs":true,"family":"Kohler","given":"W.M.","email":"","affiliations":[],"preferred":false,"id":155879,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lamson, R.J.","contributorId":86762,"corporation":false,"usgs":true,"family":"Lamson","given":"R.J.","affiliations":[],"preferred":false,"id":155882,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Leone, L.E.","contributorId":71969,"corporation":false,"usgs":true,"family":"Leone","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":155880,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":7579,"text":"ofr83613 - 1983 - Time-domain electromagnetic tests in the Wadi Bidah District, Kingdom of Saudi Arabia","interactions":[],"lastModifiedDate":"2012-02-02T00:06:02","indexId":"ofr83613","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-613","title":"Time-domain electromagnetic tests in the Wadi Bidah District, Kingdom of Saudi Arabia","docAbstract":"A time-domain electromagnetic (TDEM) method was tested in two areas of mineralization in Precambrian rocks in the Wadi Bidah district, Kingdom of Saudi Arabia. Transient-decay voltages in profile mode were measured across the Sha'ab at \r\nTare and Rabathan prospects by use of three transmitterreceiver loop configurations. At the Sha'ab at Tare prospect all of the loop configurations indicated the mineralized \r\nzone. Analysis of the coincident loop data at Sha'ab at Tare reveals that gossanous and altered rock of i0 ohm-m resistivity extends to a depth of 35 m, where there is an unweathered, dry mineralized zone of about 1 ohm-m resistivity. The model further suggests that the rocks at a depth of 55 m and below the water table are even less resistive (0. 1 ohm-m). The TDEM method successfully discriminated conductors within from those below the weathered zone at the Rabathan prospect. Conductors below the weathered zone are identified by a lack of transient response in the early part of the transient decay curve, followed by an increasing response in the middle to late parts of the transient decay curve. Results of these limited tests suggest the potential value of integrating TDEM with other geophysical tools in the Kingdom. Recommendations are made to expand these tests into a more comprehensive program that will evaluate the TDEM potential in various geologic environments that are host to mineral deposits of diverse origin.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83613","usgsCitation":"Flanigan, V.J., Sadek, H., Smith, B., and Tippens, C.L., 1983, Time-domain electromagnetic tests in the Wadi Bidah District, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 83-613, ii, 27 p. ill., maps ;28 cm., https://doi.org/10.3133/ofr83613.","productDescription":"ii, 27 p. ill., maps ;28 cm.","costCenters":[],"links":[{"id":140730,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0613/report-thumb.jpg"},{"id":35040,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0613/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a53e4b07f02db62b578","contributors":{"authors":[{"text":"Flanigan, Vincent J.","contributorId":37735,"corporation":false,"usgs":true,"family":"Flanigan","given":"Vincent","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":156208,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sadek, Hamdy","contributorId":97491,"corporation":false,"usgs":true,"family":"Sadek","given":"Hamdy","affiliations":[],"preferred":false,"id":156210,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, Bruce 0000-0002-1643-2997","orcid":"https://orcid.org/0000-0002-1643-2997","contributorId":43350,"corporation":false,"usgs":true,"family":"Smith","given":"Bruce","affiliations":[],"preferred":false,"id":156209,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tippens, C. L.","contributorId":8471,"corporation":false,"usgs":true,"family":"Tippens","given":"C.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":156207,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":7585,"text":"ofr83901 - 1983 - U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; additional ore deposit models","interactions":[],"lastModifiedDate":"2012-02-02T00:05:50","indexId":"ofr83901","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-901","title":"U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; additional ore deposit models","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83901","usgsCitation":"Cox, D.P., 1983, U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; additional ore deposit models: U.S. Geological Survey Open-File Report 83-901, 32 p. ill. ;28 cm., https://doi.org/10.3133/ofr83901.","productDescription":"32 p. ill. ;28 cm.","costCenters":[],"links":[{"id":139854,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0901/report-thumb.jpg"},{"id":35071,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0901/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a29e4b07f02db611b49","contributors":{"authors":[{"text":"Cox, Dennis P. dcox@usgs.gov","contributorId":2766,"corporation":false,"usgs":true,"family":"Cox","given":"Dennis","email":"dcox@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":156231,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":3790,"text":"cir864 - 1983 - A review of classical silicate-rock analysis and recommended modifications of classical methods of analysis","interactions":[],"lastModifiedDate":"2012-02-02T00:05:41","indexId":"cir864","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"864","title":"A review of classical silicate-rock analysis and recommended modifications of classical methods of analysis","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/cir864","usgsCitation":"Jenkins, L., 1983, A review of classical silicate-rock analysis and recommended modifications of classical methods of analysis: U.S. Geological Survey Circular 864, iii, 34 p. :ill. ;26 cm., https://doi.org/10.3133/cir864.","productDescription":"iii, 34 p. :ill. ;26 cm.","costCenters":[],"links":[{"id":118081,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1983/0864/report-thumb.jpg"},{"id":30862,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1983/0864/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a802a","contributors":{"authors":[{"text":"Jenkins, Lillie B.","contributorId":107268,"corporation":false,"usgs":true,"family":"Jenkins","given":"Lillie B.","affiliations":[],"preferred":false,"id":147606,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7586,"text":"ofr83423 - 1983 - U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; ore deposit models","interactions":[],"lastModifiedDate":"2012-02-02T00:05:50","indexId":"ofr83423","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-423","title":"U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; ore deposit models","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83423","usgsCitation":"Cox, D.P., 1983, U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; ore deposit models: U.S. Geological Survey Open-File Report 83-423, 74 p. ill., map ;28 cm., https://doi.org/10.3133/ofr83423.","productDescription":"74 p. ill., map ;28 cm.","costCenters":[],"links":[{"id":139855,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0423/report-thumb.jpg"},{"id":35072,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0423/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a29e4b07f02db611bee","contributors":{"authors":[{"text":"Cox, Dennis P. dcox@usgs.gov","contributorId":2766,"corporation":false,"usgs":true,"family":"Cox","given":"Dennis","email":"dcox@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":156232,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7588,"text":"ofr83270 - 1983 - The U.S. Geological Survey's water resources program in New York","interactions":[],"lastModifiedDate":"2012-02-02T00:05:50","indexId":"ofr83270","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-270","title":"The U.S. Geological Survey's water resources program in New York","docAbstract":"The U.S. Geological Survey performs hydrologic investigations throughout the United States to appraise the Nation's water resources. The Geological Survey began its water-resources investigations in New York in 1895. To meet the objectives of assessing New York's water resources, the Geological Survey (1) monitors the quantity and quality of surface and ground water, (2) conducts investigations of the occurrence, availability, and chemical quality of water in specific areas of the State, (3) develops methods and techniques of data-collection and interpretation, (4) provides scientific guidance to the research community, to Federal, State, and local governments, and to the public, and (5) disseminates data and results of research through reports, maps, news releases, conferences, and workshops. \r\n\r\nMany of the joint hydrologic investigations are performed by the Geological Survey in cooperation with State, county, and nonprofit organizations. The data collection network in New York includes nearly 200 gaging stations and 250 observation wells; chemical quality of water is measured at 260 sites. Data collected at these sites are published annually and are filed in the WATSTORE computer system. Some of the interpretive studies performed by the Geological Survey in New York include (1) determining the suitability of ground-water reservoirs for public-water supply in urban areas, (2) assessing geohydrologic impacts of leachate from hazardous waste sites on stream and ground-water quality, (3) evaluating the effects of precipitation quality and basin characteristics on streams and lakes, and (4) developing digital models of the hydrology of aquifers to simulate ground-water flow and the interaction between ground water and streams.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83270","usgsCitation":"Wiltshire, D.A., 1983, The U.S. Geological Survey's water resources program in New York: U.S. Geological Survey Open-File Report 83-270, 15 p. ;27 cm., https://doi.org/10.3133/ofr83270.","productDescription":"15 p. ;27 cm.","costCenters":[],"links":[{"id":139857,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0270/report-thumb.jpg"},{"id":35074,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0270/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a80e4b07f02db6498d8","contributors":{"authors":[{"text":"Wiltshire, Denise A.","contributorId":78717,"corporation":false,"usgs":true,"family":"Wiltshire","given":"Denise","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":156237,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7649,"text":"ofr83604 - 1983 - Computer program modifications of Open-file report 82-1065; a comprehensive system for interpreting seismic-refraction and arrival-time data using interactive computer methods","interactions":[],"lastModifiedDate":"2012-02-02T00:06:03","indexId":"ofr83604","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-604","title":"Computer program modifications of Open-file report 82-1065; a comprehensive system for interpreting seismic-refraction and arrival-time data using interactive computer methods","docAbstract":"The computer programs published in Open-File Report 82-1065, A comprehensive system for interpreting seismic-refraction arrival-time data using interactive computer methods (Ackermann, Pankratz, and Dansereau, 1982), have been modified to run on a mini-computer. The new version uses approximately 1/10 of the memory of the initial version, is more efficient and gives the same results.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83604","usgsCitation":"Ackermann, H.D., Pankratz, L.W., and Dansereau, D.A., 1983, Computer program modifications of Open-file report 82-1065; a comprehensive system for interpreting seismic-refraction and arrival-time data using interactive computer methods: U.S. Geological Survey Open-File Report 83-604, 3 p. ;28 cm., https://doi.org/10.3133/ofr83604.","productDescription":"3 p. ;28 cm.","costCenters":[],"links":[{"id":140634,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0604/report-thumb.jpg"},{"id":35129,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0604/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b19e4b07f02db6a7de0","contributors":{"authors":[{"text":"Ackermann, Hans D.","contributorId":44539,"corporation":false,"usgs":false,"family":"Ackermann","given":"Hans","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":156368,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pankratz, Leroy W.","contributorId":28976,"corporation":false,"usgs":true,"family":"Pankratz","given":"Leroy","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":156367,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dansereau, Danny A.","contributorId":48970,"corporation":false,"usgs":true,"family":"Dansereau","given":"Danny","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":156369,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":11004,"text":"ofr82111 - 1983 - Gravity survey of Dixie Valley, west-central Nevada","interactions":[],"lastModifiedDate":"2012-02-02T00:06:27","indexId":"ofr82111","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"82-111","title":"Gravity survey of Dixie Valley, west-central Nevada","docAbstract":"Dixie Valley, a northeast-trending structural trough typical of valleys in the Basin and Range Province, is filled with a maximum of about 10,000 feet of alluvial and lacustrine deposits , as estimated from residual-gravity measurements obtained in this study. On the basis of gravity measurements at 300 stations on nine east-west profiles, the gravity residuals reach a maximum of 30 milligals near the south-central part of the valley. Results from a three-dimensional inversion model indicate that the central depression of the valley is offset to the west of the geographic axis. This offset is probably due to major faulting along the west side of the valley adjacent to the Stillwater Range. Comparison of depths to bedrock obtained during this study and depths obtained from a previous seismic-refraction study indicates a reasonably good correlation. A heterogeneous distribution of densities within the valley-fill deposits would account for differing depths determined by the two methods. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr82111","usgsCitation":"Schaefer, D.H., 1983, Gravity survey of Dixie Valley, west-central Nevada: U.S. Geological Survey Open-File Report 82-111, v, 22 p. :maps ;28 cm., https://doi.org/10.3133/ofr82111.","productDescription":"v, 22 p. :maps ;28 cm.","costCenters":[],"links":[{"id":144064,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1982/0111/report-thumb.jpg"},{"id":38772,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1982/0111/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":38773,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1982/0111/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":38774,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1982/0111/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b12e4b07f02db6a2855","contributors":{"authors":[{"text":"Schaefer, Donald H.","contributorId":77507,"corporation":false,"usgs":true,"family":"Schaefer","given":"Donald","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":162360,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":25715,"text":"wri834238 - 1983 - Precipitation-runoff modeling system; user's manual","interactions":[],"lastModifiedDate":"2012-02-02T00:08:15","indexId":"wri834238","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-4238","title":"Precipitation-runoff modeling system; user's manual","docAbstract":"The concepts, structure, theoretical development, and data requirements of the precipitation-runoff modeling system (PRMS) are described. The precipitation-runoff modeling system is a modular-design, deterministic, distributed-parameter modeling system developed to evaluate the impacts of various combinations of precipitation, climate, and land use on streamflow, sediment yields, and general basin hydrology. Basin response to normal and extreme rainfall and snowmelt can be simulated to evaluate changes in water balance relationships, flow regimes, flood peaks and volumes, soil-water relationships, sediment yields, and groundwater recharge. Parameter-optimization and sensitivity analysis capabilites are provided to fit selected model parameters and evaluate their individual and joint effects on model output. The modular design provides a flexible framework for continued model system enhancement and hydrologic modeling research and development. (Author 's abstract)","language":"ENGLISH","publisher":"U.S. Geological Survey, Water Resources Division,","doi":"10.3133/wri834238","usgsCitation":"Leavesley, G., Lichty, R., Troutman, B., and Saindon, L., 1983, Precipitation-runoff modeling system; user's manual: U.S. Geological Survey Water-Resources Investigations Report 83-4238, vii, 207 p. :ill., maps ;28 cm., https://doi.org/10.3133/wri834238.","productDescription":"vii, 207 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":156896,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1983/4238/report-thumb.jpg"},{"id":54474,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1983/4238/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abae4b07f02db671f67","contributors":{"authors":[{"text":"Leavesley, G.H.","contributorId":93895,"corporation":false,"usgs":true,"family":"Leavesley","given":"G.H.","email":"","affiliations":[],"preferred":false,"id":194774,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lichty, R.W.","contributorId":46987,"corporation":false,"usgs":true,"family":"Lichty","given":"R.W.","affiliations":[],"preferred":false,"id":194772,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Troutman, B.M.","contributorId":73638,"corporation":false,"usgs":true,"family":"Troutman","given":"B.M.","email":"","affiliations":[],"preferred":false,"id":194773,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Saindon, L.G.","contributorId":103281,"corporation":false,"usgs":false,"family":"Saindon","given":"L.G.","email":"","affiliations":[],"preferred":false,"id":194775,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":3835,"text":"cir907 - 1983 - Hydrologic and geologic aspects of waste management and disposal; a bibliography of publications by U.S. Geological Survey authors, 1950-81","interactions":[],"lastModifiedDate":"2012-02-02T00:05:40","indexId":"cir907","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"907","title":"Hydrologic and geologic aspects of waste management and disposal; a bibliography of publications by U.S. Geological Survey authors, 1950-81","docAbstract":"References to more than 550 reports, articles, and maps are listed alphabetically by author and are indexed by subject. The subject index includes geographic-area terms. Citations from 69 series are included; series are listed separately. The publications listed report the results of U.S. Geological Survey research and field projects throughout the Nation concerning earth-science aspects of waste management and disposal. They include organic, inorganic, and radioactive wastes and related topics such as mathematical models of solute transport. Most of the references are to (1) Geological Survey report series such as Water-Supply Papers, Professional Papers, Bulletins, Circulars, Water-Resources Investigations, and Open-File Reports, (2) technical journals of professional organizations, or (3) reports by other Federal and State agencies.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, Geological Survey ;\r\nApplication to Distribution Branch, Text Products Section, U.S. Geological Survey,","doi":"10.3133/cir907","usgsCitation":"Handman, E.H., 1983, Hydrologic and geologic aspects of waste management and disposal; a bibliography of publications by U.S. Geological Survey authors, 1950-81: U.S. Geological Survey Circular 907, iii, 40 p. ;26 cm., https://doi.org/10.3133/cir907.","productDescription":"iii, 40 p. ;26 cm.","costCenters":[],"links":[{"id":123188,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1983/0907/report-thumb.jpg"},{"id":30908,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1983/0907/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ad6e4b07f02db683f6c","contributors":{"authors":[{"text":"Handman, Elinor H.","contributorId":31748,"corporation":false,"usgs":true,"family":"Handman","given":"Elinor","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":147697,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":25885,"text":"wri824018 - 1983 - Determination of dissolved aluminum in water samples","interactions":[],"lastModifiedDate":"2012-02-02T00:08:38","indexId":"wri824018","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"82-4018","title":"Determination of dissolved aluminum in water samples","docAbstract":"A technique has been modified for determination of a wide range of concentrations of dissolved aluminum (Al) in water and has been tested. In this technique, aluminum is complexed with 8-hydroxyquinoline at pH 8.3 to minimize interferences, then extracted with methyl isobutyl ketone (MIBK). The extract is analyzed colorimetrically at 395 nm. This technique is used to analyze two forms of monomeric Al, nonlabile (organic complexes) and labile (free, Al, Al sulfate, fluoride and hydroxide complexes). A detection limit 2 ug/L is possible with 25-ml samples and 10-ml extracts. The detection limit can be decreased by increasing the volume of the sample and (or) decreasing the volume of the methyl isobutyl ketone extract. The analytical uncertainty of this method is approximately + or - 5 percent. The standard addition technique provides a recovery test for this technique and ensures precision in samples of low Al concentrations. The average percentage recovery of the added Al plus the amount originally present was 99 percent. Data obtained from analyses of filtered standard solutions indicated that Al is adsorbed on various types of filters. However, the relationship between Al concentrations and adsorption remains linear. A test on standard solutions also indicated that Al is not adsorbed on nitric acid-washed polyethylene and polypropylene bottle wells. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/wri824018","usgsCitation":"Afifi, A., 1983, Determination of dissolved aluminum in water samples: U.S. Geological Survey Water-Resources Investigations Report 82-4018, iii, 16 p. :ill. ;28 cm., https://doi.org/10.3133/wri824018.","productDescription":"iii, 16 p. :ill. ;28 cm.","costCenters":[],"links":[{"id":123767,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1982/4018/report-thumb.jpg"},{"id":54647,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1982/4018/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db6677f2","contributors":{"authors":[{"text":"Afifi, A.A.","contributorId":98768,"corporation":false,"usgs":true,"family":"Afifi","given":"A.A.","email":"","affiliations":[],"preferred":false,"id":195423,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":18184,"text":"ofr83778 - 1983 - Geophysical investigations in the Dhahar-Al Hajrah region, Wadi Malahah Quadrangle, southwestern Saudi Arabia","interactions":[],"lastModifiedDate":"2012-02-02T00:07:19","indexId":"ofr83778","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-778","title":"Geophysical investigations in the Dhahar-Al Hajrah region, Wadi Malahah Quadrangle, southwestern Saudi Arabia","docAbstract":"Crone electromagnetic, self-potential, and induced polarization surveys were conducted in the Dhahar-Al Hajrah region, southwestern Saudi Arabia, in support of geological and geochemical exploration for volcanogenic sulfide deposits. Although a previous, airborne electromagnetic survey found no anomalies in the vicinity of the ancient mines in the region, surface indications of anomalous copper and zinc at both Dhahar and Al Hajrah are abundant. \r\n\r\nReconnaissance Crone electromagnetic traverses across the Dhahar prospect area delineated numerous conductive zones, but none had a dip-angle anomaly of more than 10?. Similar results were obtained at Al Hajrah. \r\n\r\nWith one or two encouraging exceptions, self-potential surveys at Al Hajrah showed only broad gradients and anomalies having amplitudes of less than 40 mV. Dipole-dipole induced polarization surveys at Al Hajrah delineated two nearly continuous polarizable zones having an aggregate strike length of almost 7 km. The two zones are symmetrically disposed on either side of a median aplitic dike and may lie on opposing limbs of a south-plunging antiform. Chargeabilities in the anomalous zones are weak to moderate but in most places are clearly associated with anomalous copper and (or) zinc concentrations found by surface sampling. \r\n\r\nGround electromagnetic traverses are recommended to determine the most conductive intervals of anomalous induced polarization effect in the anomalous zones; these conductive intervals should then be tested by drilling, where appropriate. Reconnaissance self-potential traverses are also recommended at Dhahar, and additional ground electromagnetic surveys are recommended across two airborne electromagnetic anomalies located immediately southeast of the Al Hajrah target.","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83778","usgsCitation":"Blank, H., 1983, Geophysical investigations in the Dhahar-Al Hajrah region, Wadi Malahah Quadrangle, southwestern Saudi Arabia: U.S. Geological Survey Open-File Report 83-778, ii, 31 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr83778.","productDescription":"ii, 31 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":150539,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0778/report-thumb.jpg"},{"id":47548,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0778/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":47549,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0778/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":47550,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0778/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":47551,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0778/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":47552,"rank":404,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0778/plate-5.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":47553,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0778/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c1b6","contributors":{"authors":[{"text":"Blank, H. R.","contributorId":50516,"corporation":false,"usgs":true,"family":"Blank","given":"H. R.","affiliations":[],"preferred":false,"id":178671,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":3916,"text":"cir878B - 1983 - A U.S. Geological Survey Data Standard (Specifications for representation of geographic point locations for information interchange)","interactions":[],"lastModifiedDate":"2012-02-02T00:05:26","indexId":"cir878B","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":307,"text":"Circular","code":"CIR","onlineIssn":"2330-5703","printIssn":"1067-084X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"878","chapter":"B","title":"A U.S. Geological Survey Data Standard (Specifications for representation of geographic point locations for information interchange)","docAbstract":"This standard establishes uniform formats for geographic point location data. Geographic point location refers to the use of a coordinate system to define the position of a point that may be on, above, or below the Earth's surface. It provides a means for representing these data in digital form for the purpose of interchanging information among data systems and improving clarity and accuracy of interpersonal communications. \r\n\r\nThis document is an expansion and clarification of National Bureau of Standards FIPS PUB 70, issued October 24, 1980. There are minor editorial changes, plus the following additions and modifications: \r\n\r\n(I) The representation of latitude and longitude using radian measure was added. \r\n\r\n(2) Alternate 2 for Representation of Hemispheric Information was deleted. \r\n\r\n(3) Use of the maximum precision for all numerical values was emphasized. The Alternate Representation of Precision was deleted. \r\n\r\n(4) The length of the zone representation for the State Plane Coordinate System was standardized. \r\n\r\n(5) The term altitude was substituted for elevation throughout to conform with international usage. \r\n\r\n(6) Section 3, Specifications for Altitude Data, was expanded and upgraded significantly to the same level of detail as for the \r\nhorizontal values. \r\n\r\n(7) A table delineating the coverage of Universal Transverse Mercator zones and the longitudes of the Central Meridians was added and the other tables renumbered. \r\n\r\n(8) The total length of the representation of point location data at maximum precision was standardized.","language":"ENGLISH","publisher":"The Survey,","doi":"10.3133/cir878B","usgsCitation":"Water Resources Division, U.S. Geological Survey, 1983, A U.S. Geological Survey Data Standard (Specifications for representation of geographic point locations for information interchange): U.S. Geological Survey Circular 878, iv, B1-B24 p. ;26 cm., https://doi.org/10.3133/cir878B.","productDescription":"iv, B1-B24 p. ;26 cm.","costCenters":[],"links":[{"id":124621,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/circ/1983/0878b/report-thumb.jpg"},{"id":31002,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/circ/1983/0878b/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd496de4b0b290850ef28a","contributors":{"authors":[{"text":"Water Resources Division, U.S. Geological Survey","contributorId":128075,"corporation":true,"usgs":false,"organization":"Water Resources Division, U.S. Geological Survey","id":528162,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":7943,"text":"ofr83432 - 1983 - Montana; basic data for thermal springs and wells as recorded in Geotherm","interactions":[],"lastModifiedDate":"2012-02-02T00:06:02","indexId":"ofr83432","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-432","title":"Montana; basic data for thermal springs and wells as recorded in Geotherm","docAbstract":"Changes in ground-water withdrawals, water levels, and quality of water occurred in the artesian aquifers of the Sevier Desert, Utah during 1963-81. Ground-water withdrawals increased from an average of 9,500 acre-feet (11.7 cubic hectometers) per year between 1951 and 1963 to an average of 27,500 acre-feet (33.9 cubic hectometers) per year between 1964 and 1981. Most of the increased withdrawal was from the deep artesian aquifer. Water levels declined as much as 19 feet (5.8 meters) in the deep artesian aquifer and as much as 13 feet (4.0 meters) in the shallow artesian aquifer between 1963 and 1981. The declines probably are due to increased ground-water withdrawals for irrigation and municipal use. Quality of water in parts of the shallow artesian aquifer is deteriorating. The deterioration probably is the result of recharge of poor quality from the overlying water-table aquifer. A digital-computer model was constructed to predict water-level changes resulting from changes in recharge and discharge for 20 years (1981-2000) at one-half, one, and two times the 1977-79 average rate. The model computer water-level declines of more than 80 feet (24 meters) in the deep artesian aquifer with withdrawals twice the 1977-79 average, declines of more than 40 feet (12 meters) if withdrawals were equal to the 1977-79 average, and declines of more than 15 feet (4.6 meters) if withdrawals were one-half the 1977-79 average. Computer water-level declines after 20 years in the shallow artesian aquifer were more than 50 feet (15 meters) at two times the 1977-79 average rate, more than 15 feet (4.6 meters) at the 1977-79 average, and less than 4 feet (1.2 meters) at one-half the 1977-79 average. The model also was used to predict the effects of approximate changes in ground-water withdrawals related to the Intermountain Power Project. Water-level declines in the deep artesian aquifer of more than 15 feet (4.6 meters), and only small changes in water levels in the shallow artesian aquifer after 20 years. These changes are in addition to changes computed for 20 years of withdrawals at the 1977-79 rate. (USGS)","language":"ENGLISH","publisher":"U.S. Geological Survey,","doi":"10.3133/ofr83432","usgsCitation":"Bliss, J.D., 1983, Montana; basic data for thermal springs and wells as recorded in Geotherm: U.S. Geological Survey Open-File Report 83-432, 166 p. ;28 cm., https://doi.org/10.3133/ofr83432.","productDescription":"166 p. ;28 cm.","costCenters":[],"links":[{"id":140868,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0432/report-thumb.jpg"},{"id":35514,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0432/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4814e4b07f02db4dab3d","contributors":{"authors":[{"text":"Bliss, James D. jbliss@usgs.gov","contributorId":2790,"corporation":false,"usgs":true,"family":"Bliss","given":"James","email":"jbliss@usgs.gov","middleInitial":"D.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":156871,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":10958,"text":"ofr83241 - 1983 - Hypermag: An interactive, two-dimensional gravity and magnetic modeling program","interactions":[],"lastModifiedDate":"2020-03-02T14:46:35","indexId":"ofr83241","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-241","title":"Hypermag: An interactive, two-dimensional gravity and magnetic modeling program","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr83241","usgsCitation":"Saltus, R.W., and Blakely, R.J., 1983, Hypermag: An interactive, two-dimensional gravity and magnetic modeling program: U.S. Geological Survey Open-File Report 83-241, 94 p., https://doi.org/10.3133/ofr83241.","productDescription":"94 p.","costCenters":[{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":372799,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0241/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":144192,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0241/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ce4b07f02db5fc5ab","contributors":{"authors":[{"text":"Saltus, R. W.","contributorId":85588,"corporation":false,"usgs":true,"family":"Saltus","given":"R.","middleInitial":"W.","affiliations":[],"preferred":false,"id":162273,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blakely, Richard J. 0000-0003-1701-5236 blakely@usgs.gov","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":1540,"corporation":false,"usgs":true,"family":"Blakely","given":"Richard","email":"blakely@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true},{"id":662,"text":"Western Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":162272,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":10776,"text":"ofr83421 - 1983 - Preliminary map of limonitic hydrothermal alteration for portions of the Needles 1° x 2° quadrangle, Arizona and California","interactions":[],"lastModifiedDate":"2022-11-02T18:42:12.871146","indexId":"ofr83421","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","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":"83-421","title":"Preliminary map of limonitic hydrothermal alteration for portions of the Needles 1° x 2° quadrangle, Arizona and California","docAbstract":"Portions of the Needles quadrangle have been designated by the Bureau of Land Management as potential wilderness areas and are being evaluated by a multidisciplinary team to determine the mineral-resource potential. As a part of this study Landsat images are being used to map the generalized distribution of limonitic materials as a guide to hydrothermal alteration which, in turn, acts as a guide to mineralized systems. The term limonite, defined by Blanchard (1968) as a general term for hydrous iron oxides, is here modified to include any material with the unique spectral reflectance properties of the ferric oxide minerals such as hematite and goethite, as defined by Hunt (1980).
\nThe map shows areas of limonitic hydrothermal alteration but does not show hydrothermally altered areas lacking limonitic materials. Table 1 lists, for each hydrothermally altered area detected, the type of alteration and the anomalous trace-element geochemical suite found in that area.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr83421","collaboration":"Prepared in cooperation with the U.S. Bureau of Land Management","usgsCitation":"Raines, G.L., 1983, Preliminary map of limonitic hydrothermal alteration for portions of the Needles 1° x 2° quadrangle, Arizona and California: U.S. Geological Survey Open-File Report 83-421, Report: 7 p.; 1 Plate: 32.47 × 26.82 inches, https://doi.org/10.3133/ofr83421.","productDescription":"Report: 7 p.; 1 Plate: 32.47 × 26.82 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":409069,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_14042.htm","linkFileType":{"id":5,"text":"html"}},{"id":38580,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1983/0421/report.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":38579,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1983/0421/plate-1.pdf","text":"Map","linkFileType":{"id":1,"text":"pdf"},"description":"Map"},{"id":145071,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1983/0421/report-thumb.jpg"}],"scale":"250000","projection":"Transverse Mercator Projection","country":"United States","state":"Arizona, California","otherGeospatial":"Needles quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116,\n 35\n ],\n [\n -116,\n 34\n ],\n [\n -114,\n 34\n ],\n [\n -114,\n 35\n ],\n [\n -116,\n 35\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d825","contributors":{"authors":[{"text":"Raines, Gary L.","contributorId":48162,"corporation":false,"usgs":true,"family":"Raines","given":"Gary","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":161946,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2880,"text":"wsp2214 - 1983 - Estimating peak discharges of small, rural streams in Massachusetts","interactions":[{"subject":{"id":11563,"text":"ofr80676 - 1982 - Estimating peak discharges of small rural streams in Massachusetts","indexId":"ofr80676","publicationYear":"1982","noYear":false,"title":"Estimating peak discharges of small rural streams in Massachusetts"},"predicate":"SUPERSEDED_BY","object":{"id":2880,"text":"wsp2214 - 1983 - Estimating peak discharges of small, rural streams in Massachusetts","indexId":"wsp2214","publicationYear":"1983","noYear":false,"title":"Estimating peak discharges of small, rural streams in Massachusetts"},"id":1}],"lastModifiedDate":"2012-02-02T00:05:35","indexId":"wsp2214","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2214","title":"Estimating peak discharges of small, rural streams in Massachusetts","docAbstract":"Floodflows on natural-flow streams in Massachusetts with drainage areas between 0.25 square miles and 260 square miles may be estimated from drainage area, main-channel slope, mean basin elevation, and the area of swamps, lakes, and ponds. Multiple-regression techniques were used to define the relationship between a suite of basin and climatic characteristics and flood peaks in three flood-frequency regions at a total of 95 sites. Station flood-frequency data were computed following guidelines in Bulletin 17A of the U.S. Water Resources Council. The frequency analyses are based upon weighted skew values, adjustments for high and low outliers, and historic peak data. \r\n\r\nRegression equations for estimation of peak discharges for 0.5, 0.2, 0.1, 0.04, 0.02, and 0.01 exceedance probabilities are provided for ungaged sites. An improved sample of flood peaks and gaging stations and the definition of three flood-frequency regions reduced the standard errors of estimate by about 5 percent over those for the 1977 relations. Included in this analysis were the synthetic flood-frequency data at 8 sites computed using historic climatic data and 10 parameters optimized by calibration of the U.S. Geological Survey's rainfall-runoff model with storm data observed over 11 years. \r\n\r\nThe equations are applicable to streams unaffected by regulation where the usable manmade storage is less than 4.5 million cubic feet per square mile, or by diversions or urbanization. The equations are restricted to sites where the basin indices are within a specified range outside of eastern Plymouth, Barnstable, Dukes, or Nantucket Counties. In these areas, the available data do not adequately define the influence of high infiltration and storage capacities of drainage basins on floodflows.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nU.S. G.P.O.,","doi":"10.3133/wsp2214","usgsCitation":"Wandle, S.W., 1983, Estimating peak discharges of small, rural streams in Massachusetts: U.S. Geological Survey Water Supply Paper 2214, iv, 26 p. :ill. ;28 cm., https://doi.org/10.3133/wsp2214.","productDescription":"iv, 26 p. :ill. ;28 cm.","numberOfPages":"30","costCenters":[],"links":[{"id":139002,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/2214/report-thumb.jpg"},{"id":29517,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/2214/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db64867b","contributors":{"authors":[{"text":"Wandle, S. William","contributorId":95862,"corporation":false,"usgs":true,"family":"Wandle","given":"S.","email":"","middleInitial":"William","affiliations":[],"preferred":false,"id":145949,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":4677,"text":"twri08A2 - 1983 - Installation and service manual for the U.S. Geological Survey manometers","interactions":[],"lastModifiedDate":"2012-02-02T00:05:31","indexId":"twri08A2","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":336,"text":"Techniques of Water-Resources Investigations","code":"TWRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"08-A2","title":"Installation and service manual for the U.S. Geological Survey manometers","docAbstract":"The purpose of this manual is to describe the installation, operation, and maintenance of the bubble-gage manometers currently (1982) used by the U.S. Geological Survey. Other applications of these devices, such as the long manometer and differential manometer, are discussed, and accessories available for them are described.\r\nThe bubble gage (water-stage manometer with gas-purge system) described in the Installation and Service Manual, October 1962, has been extensively modified and developed into the STACOM (stabilized and temperature compensated) device. This chapter is the manual for the STACOM unit and an update of the manual for the screw-type bubble gage. A parts list is included for both units.","language":"ENGLISH","publisher":"U.S. G.P.O.,","doi":"10.3133/twri08A2","issn":"0565-596X","usgsCitation":"Craig, J.D., 1983, Installation and service manual for the U.S. Geological Survey manometers: U.S. Geological Survey Techniques of Water-Resources Investigations 08-A2, viii, 57 p. :ill. ;26 cm., https://doi.org/10.3133/twri08A2.","productDescription":"viii, 57 p. :ill. ;26 cm.","costCenters":[],"links":[{"id":238,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/twri/twri8a2/","linkFileType":{"id":5,"text":"html"}},{"id":139140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f1e4b07f02db5ee339","contributors":{"authors":[{"text":"Craig, James D.","contributorId":44525,"corporation":false,"usgs":true,"family":"Craig","given":"James","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":149607,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}