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","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr274","usgsCitation":"U.S. Geological Survey, and Saudi Arabia. Deputy Ministry for Mineral Resources, 1982, Landsat image map of the Wādī Ash Shaʻbah quadrangle, sheet 26E, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 274, 21.26 x 33.46 inches, https://doi.org/10.3133/ofr274.","productDescription":"21.26 x 33.46 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312949,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"250000","projection":"Transverse Mercator","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 40.5,\n 26\n ],\n [\n 40.5,\n 27\n ],\n [\n 42,\n 27\n ],\n [\n 42,\n 26\n ],\n [\n 40.5,\n 26\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56826b45e4b0a04ef4925b78","contributors":{"authors":[{"text":"U.S. Geological Survey","contributorId":128240,"corporation":true,"usgs":false,"organization":"U.S. Geological Survey","id":583531,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saudi Arabia. Deputy Ministry for Mineral Resources","contributorId":147327,"corporation":true,"usgs":false,"organization":"Saudi Arabia. Deputy Ministry for Mineral Resources","id":583532,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160452,"text":"ofr212 - 1982 - Landsat image map of the Ḩalabān quadrangle, sheet 23G, Kingdom of Saudi Arabia","interactions":[],"lastModifiedDate":"2015-12-22T17:23:47","indexId":"ofr212","displayToPublicDate":"2008-12-28T00:00:00","publicationYear":"1982","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":"212","title":"Landsat image map of the Ḩalabān quadrangle, sheet 23G, Kingdom of Saudi Arabia","docAbstract":"Interagency Report 325
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr212","usgsCitation":"U.S. Geological Survey, and Saudi Arabia. Deputy Ministry for Mineral Resources, 1982, Landsat image map of the Ḩalabān quadrangle, sheet 23G, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 212, 21.26 x 33.46 inches, https://doi.org/10.3133/ofr212.","productDescription":"21.26 x 33.46 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312554,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"250000","projection":"Transverse Mercator","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 43.5,\n 23\n ],\n [\n 43.5,\n 24\n ],\n [\n 45,\n 24\n ],\n [\n 45,\n 23\n ],\n [\n 43.5,\n 23\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56753c3de4b0da412f4f8bed","contributors":{"authors":[{"text":"U.S. Geological Survey","contributorId":128240,"corporation":true,"usgs":false,"organization":"U.S. Geological Survey","id":582942,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saudi Arabia. Deputy Ministry for Mineral Resources","contributorId":147327,"corporation":true,"usgs":false,"organization":"Saudi Arabia. Deputy Ministry for Mineral Resources","id":582943,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160553,"text":"ofr224 - 1982 - Landsat image map of the Jabal Ḩabashī quadrangle, sheet 26F, Kingdom of Saudi Arabia","interactions":[],"lastModifiedDate":"2015-12-22T17:38:38","indexId":"ofr224","displayToPublicDate":"2008-12-28T00:00:00","publicationYear":"1982","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":"224","title":"Landsat image map of the Jabal Ḩabashī quadrangle, sheet 26F, Kingdom of Saudi Arabia","docAbstract":"Interagency Report 419
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr224","usgsCitation":"U.S. Geological Survey, and Saudi Arabia. Deputy Ministry for Mineral Resources, 1982, Landsat image map of the Jabal Ḩabashī quadrangle, sheet 26F, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 224, 21.26 x 33.46 inches, https://doi.org/10.3133/ofr224.","productDescription":"21.26 x 33.46 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312756,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"250000","projection":"Transverse Mercator","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 43.5,\n 26\n ],\n [\n 43.5,\n 27\n ],\n [\n 42,\n 27\n ],\n [\n 42,\n 26\n ],\n [\n 43.5,\n 26\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"567a823de4b0a04ef490fcf1","contributors":{"authors":[{"text":"U.S. Geological Survey","contributorId":128240,"corporation":true,"usgs":false,"organization":"U.S. Geological Survey","id":583137,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saudi Arabia. Deputy Ministry for Mineral Resources","contributorId":147344,"corporation":true,"usgs":false,"organization":"Saudi Arabia. Deputy Ministry for Mineral Resources","id":583138,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70160670,"text":"ofr235 - 1982 - Landsat image map of the Wādī Ar Rimah quadrangle, Kingdom of Saudi Arabia","interactions":[],"lastModifiedDate":"2015-12-28T16:41:53","indexId":"ofr235","displayToPublicDate":"2008-12-28T00:00:00","publicationYear":"1982","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":"235","title":"Landsat image map of the Wādī Ar Rimah quadrangle, Kingdom of Saudi Arabia","docAbstract":"Interagency Report 430
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr235","usgsCitation":"U.S. Geological Survey, and Saudi Arabia. Deputy Ministry for Mineral Resources, 1982, Landsat image map of the Wādī Ar Rimah quadrangle, Kingdom of Saudi Arabia: U.S. Geological Survey Open-File Report 235, 38.58 x 32.68 inches, https://doi.org/10.3133/ofr235.","productDescription":"38.58 x 32.68 inches","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":312946,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"scale":"500000","projection":"Transverse Mercator","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 45,\n 28\n ],\n [\n 45,\n 24\n ],\n [\n 42,\n 24\n ],\n [\n 42,\n 28\n ],\n [\n 45,\n 28\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56826b45e4b0a04ef4925b76","contributors":{"authors":[{"text":"U.S. Geological Survey","contributorId":128240,"corporation":true,"usgs":false,"organization":"U.S. Geological Survey","id":583513,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Saudi Arabia. Deputy Ministry for Mineral Resources","contributorId":147327,"corporation":true,"usgs":false,"organization":"Saudi Arabia. Deputy Ministry for Mineral Resources","id":583514,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":80037,"text":"ofr811103 - 1982 - Chloride Concentration in Water from the Upper Permeable Zone of the Tertiary Limestone Aquifer System, Southeastern United States","interactions":[],"lastModifiedDate":"2012-02-10T00:11:39","indexId":"ofr811103","displayToPublicDate":"2007-06-20T00:00:00","publicationYear":"1982","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":"81-1103","title":"Chloride Concentration in Water from the Upper Permeable Zone of the Tertiary Limestone Aquifer System, Southeastern United States","docAbstract":"INTRODUCTION\r\n\r\nThe tertiary limestone aquifer system of the southeastern United States is a sequence of carbonate rocks referred to as the Floridan aquifer in Florida and the principal artesian aquifer in Georgia, Alabama, and South Carolina. More than 3 billion gallons of water are pumped daily from the limestone aquifer; and the system is the principal source of municipal, industrial, and agricultural water supply in south Georgia and most of Florida.\r\n\r\nThe aquifer system includes units of Paleocene to early Miocene age that combine to form a continuous carbonate sequence that is hydraulically connected in varying degrees. In a small area near Brunswick, Ga., a thin sequence of rocks of Late Cretaceous age is part of the system. In and directly downdip from much of the outcrop area, the system consists of one continuous permeable unit. Further downdip the aquifer system generally consists of two major permeable zones separated by a less-permeable unit of highly variable hydraulic properties (very leaky to virtually nonleaky). Conditions for the system vary from unconfined to confined depending upon whether the argillaceous Miocene and younger rocks that form the upper confining unit have been removed by erosion.\r\n\r\nThis report is one of a series of preliminary products depicting the hydrogeologic framework, water chemistry, and hydrology of the aquifer system. The map shows the distribution of chloride ions in water from the upper permeable zone of the limestone aquifer system. The upper permeable zone consists of several formations, primarily the Tampa, Suwannee, Ocala, and Avon Park Limestones (Miller 1981a, b).\r\n\r\nChloride concentrations of water within the upper permeable zone vary from nearly zero in recharge areas to many thousands of milligrams per liter (mg/L) in coastal discharge areas. Where the aquifer system discharges into the sea, the upper permeable zone contains increasing amounts of seawater. In these areas, wells that fully penetrate the upper permeable zone will yield water with chloride concentrations that approach that of seawater, about 19500 mg/L.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr811103","usgsCitation":"Sprinkle, C.L., 1982, Chloride Concentration in Water from the Upper Permeable Zone of the Tertiary Limestone Aquifer System, Southeastern United States (WRI/OFR 81-1103): U.S. Geological Survey Open-File Report 81-1103, Map: 35 x 44 inches, https://doi.org/10.3133/ofr811103.","productDescription":"Map: 35 x 44 inches","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":192151,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1981/1103/report-thumb.jpg"},{"id":91219,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1981/1103/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -89,24 ], [ -89,34 ], [ -80,34 ], [ -80,24 ], [ -89,24 ] ] ] } } ] }","edition":"WRI/OFR 81-1103","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dde4b07f02db5e253c","contributors":{"authors":[{"text":"Sprinkle, Craig L.","contributorId":41802,"corporation":false,"usgs":true,"family":"Sprinkle","given":"Craig","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":291538,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011693,"text":"70011693 - 1982 - Bedform climbing in theory and nature","interactions":[],"lastModifiedDate":"2025-07-25T16:52:12.285703","indexId":"70011693","displayToPublicDate":"2006-06-14T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3369,"text":"Sedimentology","active":true,"publicationSubtype":{"id":10}},"title":"Bedform climbing in theory and nature","docAbstract":"Where bedforms migrate during deposition, they move upward (climb) with respect to the generalized sediment surface. Sediment deposited on each lee slope and not eroded during the passage of a following trough is left behind as a cross-stratified bed. Because sediment is thus transferred from bedforms to underlying strata, bedforms must decrease in cross-sectional area or in number, or both, unless sediment lost from bedforms during deposition is replaced with sediment transported from outside the depositional area. Where sediment is transported solely by downcurrent migration of two-dimensional bedforms, the mean thickness of cross-stratified beds is equal to the decrease in bedform cross-sectional area divided by the migration distance over which that size decrease occurs; where bedforms migrate more than one spacing while depositing cross-strata, bed thickness is only a fraction of bedform height.
Equations that describe this depositional process explain the downcurrent decrease in size of tidal sand waves in St Andrew Bay, Florida, and the downwind decrease in size of transverse aeolian dunes on the Oregon coast. Using the same concepts, dunes that deposited the Navajo, De Chelly, and Entrada Sandstones are calculated to have had mean heights between several tens and several hundreds of metres.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1365-3091.1982.tb01714.x","issn":"00370746","usgsCitation":"Rubin, D.M., and Hunter, R.E., 1982, Bedform climbing in theory and nature: Sedimentology, v. 29, no. 1, p. 121-138, https://doi.org/10.1111/j.1365-3091.1982.tb01714.x.","productDescription":"18 p.","startPage":"121","endPage":"138","costCenters":[],"links":[{"id":221060,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"29","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-06-14","publicationStatus":"PW","scienceBaseUri":"5059f040e4b0c8380cd4a696","contributors":{"authors":[{"text":"Rubin, D. M.","contributorId":103689,"corporation":false,"usgs":true,"family":"Rubin","given":"D.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":361728,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hunter, R. E.","contributorId":48148,"corporation":false,"usgs":true,"family":"Hunter","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":361727,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011707,"text":"70011707 - 1982 - A climate-related oxidizing event in deep-sea sediment from the Bering Sea","interactions":[],"lastModifiedDate":"2025-07-11T13:17:14.795318","indexId":"70011707","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"A climate-related oxidizing event in deep-sea sediment from the Bering Sea","docAbstract":"Many cores from the deep basins of the Bering Sea have a thin oxidized zone within otherwise reduced sediment. This oxidized zone began to form about 6000 yr ago and represents an interval of about 3200 yr. Mineralogically, the oxidized and reduced sediments are similar, but chemically they differ. Concentrations of Fe and C are lower, and concentrations of Mn, Ba, Co, Mo, and Ni are higher in the oxidized than in the reduced sediment. Mn is enriched about 10-fold in the oxidized zone relative to its concentration in the reduced sediment, Mo about threefold, and Ba, Co, and Ni about twofold. These data suggest that the oxidized zone developed diagenetically as the result of the balance between the flux of organic matter and the available dissolved oxygen in bottom and interstitial waters.
We propose that the Bering Sea was substantially ice covered when global glacial conditions prevailed. during the transition to global interglacial conditions, seasonal meltwater from thawing sea ice formed a lens of fresh water that decreased organic productivity. During the winter seasons, however, sea ice reformed and caused downwelling of dense, oxygen-rich waters to recharge bottom waters. The combination of lower organic productivity and more oxygen-rich bottom water allowed oxidized sediment to accumulate. Once full interglacial conditions were established, the volume of sea ice produced was insufficient to affect either productivity or the supply of dissolved oxygen and so bottom conditions again became reducing.
Similar events probably occurred during the onset of global glacial conditions, and similar oxidized layers probably formed at these times. Such oxidized zones are highly unstable, however, in a reducing environment and, once buried beyond the influence of bacterial and infaunal activities, are depleted of their available oxygen and converted to reduced sediment.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90023-0","issn":"00335894","usgsCitation":"Gardner, J., Dean, W., Klise, D., and Baldauf, J., 1982, A climate-related oxidizing event in deep-sea sediment from the Bering Sea: Quaternary Research, v. 18, no. 1, p. 91-107, https://doi.org/10.1016/0033-5894(82)90023-0.","productDescription":"17 p.","startPage":"91","endPage":"107","costCenters":[],"links":[{"id":221383,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Bering Sea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -179.43447622186315,\n 66.03716814295933\n ],\n [\n -179.9,\n 52.18346144027916\n ],\n [\n -157.448243609558,\n 52.18346144027916\n ],\n [\n -165.90706351388224,\n 61.801670477796904\n ],\n [\n -161.33262095123737,\n 64.27396844279207\n ],\n [\n -165.98991273192667,\n 64.46043441454259\n ],\n [\n -169.5221977836011,\n 66.0415498224066\n ],\n [\n -173.0349006985722,\n 64.09395801361447\n ],\n [\n -179.43447622186315,\n 66.03716814295933\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 179.83934565752284,\n 64.81744080068066\n ],\n [\n 178.00118962320346,\n 64.61627483409542\n ],\n [\n 179.38507782495674,\n 62.24228337394402\n ],\n [\n 163.59594051029097,\n 59.269627569503484\n ],\n [\n 165,\n 52.519259996483186\n ],\n [\n 179.9,\n 52.519259996483186\n ],\n [\n 179.83934565752284,\n 64.81744080068066\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"18","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059e344e4b0c8380cd45f0d","contributors":{"authors":[{"text":"Gardner, J.V.","contributorId":76705,"corporation":false,"usgs":true,"family":"Gardner","given":"J.V.","affiliations":[],"preferred":false,"id":361775,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":361776,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Klise, D.H.","contributorId":97105,"corporation":false,"usgs":true,"family":"Klise","given":"D.H.","affiliations":[],"preferred":false,"id":361777,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Baldauf, J.G.","contributorId":67655,"corporation":false,"usgs":true,"family":"Baldauf","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":361774,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011845,"text":"70011845 - 1982 - Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California","interactions":[],"lastModifiedDate":"2025-07-10T15:42:57.8938","indexId":"70011845","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California","docAbstract":"Low aspartic acid d:l ratios and modern collagenlike concentration values indicate that amino acids in bones from the Rancho La Brea asphalt deposit, Los Angeles, California are better preserved than amino acids in bones of equivalent age that have not been preserved in asphalt. Amino acids were recovered from 10 Rancho La Brea bone samples which range in age from less than 200 to greater than 36,000 yr. The calibrated rates of aspartic acid racemization range from 2.1 to 5.0 × 10−6yr−1. Although this wide range of rate constants decreases the level of confidence for age estimates, use of the larger rate constant of 5.0 × 10−6yr−1 provides minimum age estimates which fit the known stratigraphic and chronologic records of the Rancho La Brea deposits.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90068-0","issn":"00335894","usgsCitation":"McMenamin, M., Blunt, D., Kvenvolden, K., Miller, S., Marcus, L., and Pardi, R., 1982, Amino acid geochemistry of fossil bones from the Rancho La Brea asphalt deposit, California: Quaternary Research, v. 18, no. 2, p. 174-183, https://doi.org/10.1016/0033-5894(82)90068-0.","productDescription":"10 p.","startPage":"174","endPage":"183","costCenters":[],"links":[{"id":221617,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Los Angeles","otherGeospatial":"Rancho La Brea","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.36504919269949,\n 34.084800941611704\n ],\n [\n -118.36504919269949,\n 34.052190274637866\n ],\n [\n -118.28768748317239,\n 34.052190274637866\n ],\n [\n -118.28768748317239,\n 34.084800941611704\n ],\n [\n -118.36504919269949,\n 34.084800941611704\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059e9b9e4b0c8380cd483f1","contributors":{"authors":[{"text":"McMenamin, M.A.S.","contributorId":92311,"corporation":false,"usgs":true,"family":"McMenamin","given":"M.A.S.","email":"","affiliations":[],"preferred":false,"id":362099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Blunt, D.J.","contributorId":93189,"corporation":false,"usgs":true,"family":"Blunt","given":"D.J.","email":"","affiliations":[],"preferred":false,"id":362100,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kvenvolden, K.A.","contributorId":80674,"corporation":false,"usgs":true,"family":"Kvenvolden","given":"K.A.","email":"","affiliations":[],"preferred":false,"id":362098,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, Scott","contributorId":58387,"corporation":false,"usgs":true,"family":"Miller","given":"Scott","affiliations":[],"preferred":false,"id":362095,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Marcus, L.F.","contributorId":71837,"corporation":false,"usgs":true,"family":"Marcus","given":"L.F.","email":"","affiliations":[],"preferred":false,"id":362097,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Pardi, R.R.","contributorId":68602,"corporation":false,"usgs":true,"family":"Pardi","given":"R.R.","email":"","affiliations":[],"preferred":false,"id":362096,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70011857,"text":"70011857 - 1982 - Comparisons of 210Pb and pollen methods for determining rates of estuarine sediment accumulation","interactions":[],"lastModifiedDate":"2025-07-10T15:34:40.690068","indexId":"70011857","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Comparisons of 210Pb and pollen methods for determining rates of estuarine sediment accumulation","docAbstract":"Comparisons of sedimentation rates obtained by 210Pb and pollen analyses of 1-m cores collected throughout the Potomac Estuary show good agreement in the majority of cores that can be analyzed by both methods. Most of the discrepancy between the methods can be explained by the analytical precision of the 210Pb method and by the exactness with which time horizons can be identified and dated for the pollen method. X-radiographs of the cores and the distinctness of the pollen horizons preclude significant displacement by reworking and/or mixing of sediments. Differences between the methods are greatest where uncertainties exist in assigning a rate by one or both methods (i.e., 210Pb trends and/or “possible” horizon assignments). Both methods show the same relative rates, with greater sediment accumulation more common in the upper and middle estuary and less toward the mouth. The results indicate that geochronologic studies of estuarine sediments should be preceded by careful observation of sedimentary structures, preferably by X-radiography, to evaluate the extent of mixing of the sediments. Time horizons, whether paleontologic or isotopic, are generally blurred where mixing has occurred, precluding precise identification. Whenever possible, two methods should be used for dating sediments because a rate, albeit erroneous, can be obtained isotopically in sediments that are mixed; accurate sedimentation rates are also difficult to determine where the time boundary is a zone rather than a horizon, where the historical record does not provide a precise date for the pollen horizon, or where scouring has removed some of the sediment above a dated pollen horizon.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90070-9","issn":"00335894","usgsCitation":"Brush, G.S., Martin, E., DeFries, R., and Rice, C.A., 1982, Comparisons of 210Pb and pollen methods for determining rates of estuarine sediment accumulation: Quaternary Research, v. 18, no. 2, p. 196-217, https://doi.org/10.1016/0033-5894(82)90070-9.","productDescription":"22 p.","startPage":"196","endPage":"217","costCenters":[],"links":[{"id":220793,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Maryland, Virginia","otherGeospatial":"Potomac Estuary","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -77.21659167808468,\n 38.699778399953914\n ],\n [\n -77.41753561009956,\n 38.366231828156835\n ],\n [\n -76.61370747681833,\n 38.027090597210986\n ],\n [\n -76.26590437816186,\n 37.93566274914372\n ],\n [\n -76.29683679280738,\n 38.02706156736892\n ],\n [\n -76.7876377510746,\n 38.36309125358006\n ],\n [\n -77.17990561850074,\n 38.46781164759952\n ],\n [\n -77.07845938401688,\n 38.598854602343025\n ],\n [\n -77.08520869151718,\n 38.75404029204145\n ],\n [\n -77.21659167808468,\n 38.699778399953914\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"5059f8c0e4b0c8380cd4d291","contributors":{"authors":[{"text":"Brush, G. S.","contributorId":97249,"corporation":false,"usgs":false,"family":"Brush","given":"G.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":362132,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Martin, E.A.","contributorId":44148,"corporation":false,"usgs":true,"family":"Martin","given":"E.A.","email":"","affiliations":[],"preferred":false,"id":362130,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"DeFries, R.S.","contributorId":61549,"corporation":false,"usgs":true,"family":"DeFries","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":362131,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rice, C. A.","contributorId":106116,"corporation":false,"usgs":true,"family":"Rice","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362133,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011913,"text":"70011913 - 1982 - Seismic reflection study of recessional moraines beneath Lake Superior and their relationship to regional deglaciation","interactions":[],"lastModifiedDate":"2025-07-10T15:22:47.206324","indexId":"70011913","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Seismic reflection study of recessional moraines beneath Lake Superior and their relationship to regional deglaciation","docAbstract":"Approximately 8000 km of continuous seismic reflection profiles throughout Lake Superior were examined for evidence of recessional moraines and other ice-margin deposits associated with the retreat of late Wisconsin ice. These features are correlated with the record of glacial-lake evolution in western Lake Superior. An offlapping sequence of glacial and glacial-lacustrine dediments overlying bedrock is recognized in west-central Lake Superior that is progressively younger to the northeast. The sequence underlies more recent glaical-lacustrine and postglacial sediments. Four facies are recognized on the basis of geomorphologic and acoustic properties and are interpreted to represent a southwest-to-northeast assemblage of: proglacial stratified drift (facies A), drift in major end moraines (facies B), till deposited as glacial retreat resumed, or possibly late-stage ablation till (facies C), and basal till (facies D). The prominent moraines of facies B are unusually thick and are believed to mark the ice-margin shorelines of successive major proglacial lakes that formerly occupied parts of western Lake Superior. The moraines are tentatively correlated with Glacial Lake Duluth (unit 1), Glacial Lake Washburn (unit 2), and Glacial Lake Beaver Bay (unit 3), the most prominent of lakes drained via the progressively lower outlets via the Moose Lake/ Brule-St. Croix Rivers, the Huron Mountains, and the Au Train-Whitefish regions, respectively.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90057-6","issn":"00335894","usgsCitation":"Landmesser, C., Johnson, T., and Wold, R.J., 1982, Seismic reflection study of recessional moraines beneath Lake Superior and their relationship to regional deglaciation: Quaternary Research, v. 17, no. 2, p. 173-190, https://doi.org/10.1016/0033-5894(82)90057-6.","productDescription":"18 p.","startPage":"173","endPage":"190","costCenters":[],"links":[{"id":221624,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","otherGeospatial":"Lake Superior","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -92.45906317874434,\n 49.393886624703754\n ],\n [\n -92.45906317874434,\n 46.35196254193235\n ],\n [\n -84.19792455656503,\n 46.35196254193235\n ],\n [\n -84.19792455656503,\n 49.393886624703754\n ],\n [\n -92.45906317874434,\n 49.393886624703754\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505b8b4ce4b08c986b317729","contributors":{"authors":[{"text":"Landmesser, C.W.","contributorId":90873,"corporation":false,"usgs":true,"family":"Landmesser","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":362274,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, T.C.","contributorId":35072,"corporation":false,"usgs":true,"family":"Johnson","given":"T.C.","email":"","affiliations":[],"preferred":false,"id":362272,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wold, R. J.","contributorId":59503,"corporation":false,"usgs":true,"family":"Wold","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":362273,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011863,"text":"70011863 - 1982 - Regional significance of an early Holocene moraine in Enchantment Lakes basin, North Cascade Range, Washington","interactions":[],"lastModifiedDate":"2025-07-10T15:28:29.257295","indexId":"70011863","displayToPublicDate":"2004-11-19T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Regional significance of an early Holocene moraine in Enchantment Lakes basin, North Cascade Range, Washington","docAbstract":"The upper Enchantment Lakes basin in the North Cascade Range of Washington displays two moraine belts, each recording an episode of glacier advance after the end of the last glaciation. The inner belt, the Brynhild, 0.1 to 0.5 km beyond existing glaciers, postdates Mount St. Helens Wn tephra (∼450 yr old), which lies only beyond the moraines. The morainal surface is only slightly weathered, is almost barren of lichens, and is devoid of soil, evidence suggesting that the Brynhild moraines are no more than a century old. The outer moraine, the Brisingamen, 0.3 to 0.7 km beyond existing glaciers, is weathered and is covered with large lichens. On and behind the Brisingamen moraine the Mazama ash (6900 yr old) is present beneath the Mount St. Helens Yn and Wn tephras. Despite more than 7 millennia of weathering, the rock surface behind the Brisingamen moraine is measurably less weathered than the surface beyond, which was last glaciated during the Rat Creek advance about 13,000 yr ago. The age of the Brisingamen moraine therefore is probably early Holocene. The Brisingamen moraine evidently correlates with moraines near Glacier Peak, near Mount Rainier, in northeastern and central Oregon, in the southern Canadian Rockies, and in the northern U.S. Rocky Mountains. These regional effects suggest that a climatic episode of cooling or increased snowfall affected the entire region some time during the early Holocene.
","language":"English","publisher":"Elsevier","doi":"10.1016/0033-5894(82)90058-8","issn":"00335894","usgsCitation":"Waitt, R.B., Yount, J.C., and Davis, P., 1982, Regional significance of an early Holocene moraine in Enchantment Lakes basin, North Cascade Range, Washington: Quaternary Research, v. 17, no. 2, p. 191-210, https://doi.org/10.1016/0033-5894(82)90058-8.","productDescription":"20 p.","startPage":"191","endPage":"210","costCenters":[],"links":[{"id":220864,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"Enchantment Lakes basin, North Cascade Range","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -120.82939072812538,\n 47.805166784426746\n ],\n [\n -120.82939072812538,\n 47.050606674766414\n ],\n [\n -120.1142432206274,\n 47.050606674766414\n ],\n [\n -120.1142432206274,\n 47.805166784426746\n ],\n [\n -120.82939072812538,\n 47.805166784426746\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"17","issue":"2","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"50e4a579e4b0e8fec6cdbe1a","contributors":{"authors":[{"text":"Waitt, R. B. Jr.","contributorId":48558,"corporation":false,"usgs":true,"family":"Waitt","given":"R.","suffix":"Jr.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":362146,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yount, J. C.","contributorId":69553,"corporation":false,"usgs":true,"family":"Yount","given":"J.","middleInitial":"C.","affiliations":[],"preferred":false,"id":362147,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Davis, P.T.","contributorId":71695,"corporation":false,"usgs":true,"family":"Davis","given":"P.T.","email":"","affiliations":[],"preferred":false,"id":362148,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011448,"text":"70011448 - 1982 - Ichnofossils and rhizoliths of the nearshore fluvial Jebel Qatrani Formation (Oligocene), Fayum Province, Egypt","interactions":[],"lastModifiedDate":"2025-06-16T22:48:39.621912","indexId":"70011448","displayToPublicDate":"2003-04-14T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Ichnofossils and rhizoliths of the nearshore fluvial Jebel Qatrani Formation (Oligocene), Fayum Province, Egypt","docAbstract":"The ichnofossils and rhizoliths of the Oligocene Jebel Qatrani Formation of Egypt are among the best preserved, most diverse in form, and most abundant of such structures yet recognized in fluvial rocks. Twenty-one forms are described. The ichnofauna contains traces (domichnia, fodinichnia, cubichnia) of probable annelid, insect, crustacean, and vertebrate origin. These include the first described fossil nest structures and gallery systems of subterranean termites (Isoptera), the first examples of Ophiomorpha from wholly fluvial rocks, and the first fossil vertebrate burrows from the African Tertiary. Rhizoliths associated with the ichnofauna and those occurring elsewhere document a variety of small, wetland plants, coastal mangroves, and much larger trees. The environment suggested by these traces is consistent with the coastal, tropical to subtropical, monsoonal rain forest, with adjacent more open areas, that is indicated by independent evidence of sedimentology, paleontology, and paleopedology.
","language":"English","publisher":"Elsevier","doi":"10.1016/0031-0182(82)90031-1","issn":"00310182","usgsCitation":"Bown, T.M., 1982, Ichnofossils and rhizoliths of the nearshore fluvial Jebel Qatrani Formation (Oligocene), Fayum Province, Egypt: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 40, no. 4, p. 255-309, https://doi.org/10.1016/0031-0182(82)90031-1.","productDescription":"55 p.","startPage":"255","endPage":"309","costCenters":[],"links":[{"id":221447,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Egypt","otherGeospatial":"Fayum Province","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 29.935702420031618,\n 29.745929469594316\n ],\n [\n 29.935702420031618,\n 28.33181930149749\n ],\n [\n 31.745527407056954,\n 28.33181930149749\n ],\n [\n 31.745527407056954,\n 29.745929469594316\n ],\n [\n 29.935702420031618,\n 29.745929469594316\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"40","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a37fee4b0c8380cd6134f","contributors":{"authors":[{"text":"Bown, T. M.","contributorId":106858,"corporation":false,"usgs":true,"family":"Bown","given":"T.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":361114,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011864,"text":"70011864 - 1982 - Cliff and slope topography of part of the Grand Canyon, Arizona as characterized on a seasat radar image","interactions":[],"lastModifiedDate":"2025-07-17T16:10:52.489556","indexId":"70011864","displayToPublicDate":"2003-04-14T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Cliff and slope topography of part of the Grand Canyon, Arizona as characterized on a seasat radar image","docAbstract":"No abstract available.
","language":"English","publisher":"Elsevier","doi":"10.1016/0034-4257(82)90008-6","issn":"00344257","usgsCitation":"Berlin, G.L., Schaber, G.G., Kozak, R., and Chavez, P., 1982, Cliff and slope topography of part of the Grand Canyon, Arizona as characterized on a seasat radar image: Remote Sensing of Environment, v. 12, no. 1, p. 81-85, https://doi.org/10.1016/0034-4257(82)90008-6.","productDescription":"5 p.","startPage":"81","endPage":"85","costCenters":[],"links":[{"id":220935,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Grand Canyon","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -112.95615691375838,\n 36.41604286619231\n ],\n [\n -112.95615691375838,\n 36.00023379991701\n ],\n [\n -111.7629949005232,\n 36.00023379991701\n ],\n [\n -111.7629949005232,\n 36.41604286619231\n ],\n [\n -112.95615691375838,\n 36.41604286619231\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"12","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f644e4b0c8380cd4c651","contributors":{"authors":[{"text":"Berlin, G. L.","contributorId":32941,"corporation":false,"usgs":true,"family":"Berlin","given":"G.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":362150,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schaber, G. G.","contributorId":68300,"corporation":false,"usgs":true,"family":"Schaber","given":"G.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":362152,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kozak, R.C.","contributorId":11641,"corporation":false,"usgs":true,"family":"Kozak","given":"R.C.","email":"","affiliations":[],"preferred":false,"id":362149,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chavez, P. Jr.","contributorId":59559,"corporation":false,"usgs":true,"family":"Chavez","given":"P.","suffix":"Jr.","affiliations":[],"preferred":false,"id":362151,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011875,"text":"70011875 - 1982 - The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan","interactions":[],"lastModifiedDate":"2025-06-16T22:43:43.916058","indexId":"70011875","displayToPublicDate":"2003-04-04T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan","docAbstract":"Volcanic sediments, now mostly bentonites and bentonitic mudstones, occur throughout the Late Neogene and Quaternary Siwalik Group of northern Pakistan. A number of these deposits have been dated by the fission-track method, utilizing zircon phenocrysts from these deposits, and provide the chronometric constraints upon which a paleomagnetic stratigraphy is developed for the Siwalik Group. Notable in the occurrence of these altered tuff horizons is an apparent mode in their stratigraphic development from approximately 3.0 to 1.5 m.y. B.P. which coincides with the period of activity of the Dacht-e-Nawar volcanic complex of east-central Afghanistan. Fission-track ages of certain tuffs for critical areas of northern Pakistan are reported herein.
","language":"English","publisher":"Elsevier","doi":"10.1016/0031-0182(82)90058-X","issn":"00310182","usgsCitation":"Johnson, G., Zeitler, P., Naeser, C.W., Johnson, N., Summers, D., Frost, C., Opdyke, N., and Tahirkheli, R., 1982, The occurrence and fission-track ages of late neogene and quaternary volcanic sediments, Siwalik group, Northern Pakistan: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 37, no. 1, p. 63-93, https://doi.org/10.1016/0031-0182(82)90058-X.","productDescription":"31 p.","startPage":"63","endPage":"93","costCenters":[],"links":[{"id":221066,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Pakistan","otherGeospatial":"northern Pakistan","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 70.53772619874329,\n 37.17396266355513\n ],\n [\n 70.53772619874329,\n 30.015464537817465\n ],\n [\n 74.84488172785998,\n 30.015464537817465\n ],\n [\n 74.84488172785998,\n 37.17396266355513\n ],\n [\n 70.53772619874329,\n 37.17396266355513\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bae36e4b08c986b323f57","contributors":{"authors":[{"text":"Johnson, G.D.","contributorId":17341,"corporation":false,"usgs":true,"family":"Johnson","given":"G.D.","email":"","affiliations":[],"preferred":false,"id":362172,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zeitler, P.","contributorId":80818,"corporation":false,"usgs":true,"family":"Zeitler","given":"P.","email":"","affiliations":[],"preferred":false,"id":362176,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naeser, C. W.","contributorId":17582,"corporation":false,"usgs":true,"family":"Naeser","given":"C.","middleInitial":"W.","affiliations":[],"preferred":false,"id":362173,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johnson, N.M.","contributorId":105429,"corporation":false,"usgs":true,"family":"Johnson","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":362178,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Summers, D.M.","contributorId":105433,"corporation":false,"usgs":true,"family":"Summers","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":362179,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Frost, C.D.","contributorId":20900,"corporation":false,"usgs":true,"family":"Frost","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":362174,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Opdyke, N.D.","contributorId":92678,"corporation":false,"usgs":true,"family":"Opdyke","given":"N.D.","email":"","affiliations":[],"preferred":false,"id":362177,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Tahirkheli, R.A.K.","contributorId":37889,"corporation":false,"usgs":true,"family":"Tahirkheli","given":"R.A.K.","email":"","affiliations":[],"preferred":false,"id":362175,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70011465,"text":"70011465 - 1982 - Chronology of late Wisconsinan glaciation in middle North America","interactions":[],"lastModifiedDate":"2025-07-16T15:36:05.984964","indexId":"70011465","displayToPublicDate":"2003-03-28T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Chronology of late Wisconsinan glaciation in middle North America","docAbstract":"We propose a chronology of late Wisconsinan glacial fluctuations in middle North America, from Alberta to Wisconsin, based on radiocarbon dates derived solely from wood. Previous chronologies of the southwestern margin of the North American Continental Ice Sheet have depended to a considerable degree on radiocarbon dates from fine-grained organic sediment. This material is commonly contaminated with older carbon, resulting in chronologic confusion. By using only dates from wood, much of the confusion disappears. However, because of the scarcity of wood dates, only four of the sixteen identified fluctuations are accurately dated: an advance into Iowa about 14,000 to 13,500 BP, an advance into South Dakota and Iowa about 12,300 BP, an advance into the Lake Michigan basin about 11,700 BP, and an advance into the Lake Superior basin about 9900 BP. In addition, the beginning of late Wisconsinan glaciation, before 20,000 BP, is fairly well documented. None of the fluctuations in the western part of the region are accurately dated.
","language":"English","publisher":"Elsevier","doi":"10.1016/0277-3791(82)90019-1","issn":"02773791","usgsCitation":"Clayton, L., and Moran, S., 1982, Chronology of late Wisconsinan glaciation in middle North America: Quaternary Science Reviews, v. 1, no. 1, p. 55-82, https://doi.org/10.1016/0277-3791(82)90019-1.","productDescription":"28 p.","startPage":"55","endPage":"82","costCenters":[],"links":[{"id":221670,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","otherGeospatial":"middle North America","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -116.3678104483902,\n 52.30581465709622\n ],\n [\n -116.3678104483902,\n 40.90056473121163\n ],\n [\n -94.06656843648031,\n 40.90056473121163\n ],\n [\n -94.06656843648031,\n 52.30581465709622\n ],\n [\n -116.3678104483902,\n 52.30581465709622\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f5f8e4b0c8380cd4c50a","contributors":{"authors":[{"text":"Clayton, L.","contributorId":55145,"corporation":false,"usgs":true,"family":"Clayton","given":"L.","email":"","affiliations":[],"preferred":false,"id":361179,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moran, S.R.","contributorId":20888,"corporation":false,"usgs":true,"family":"Moran","given":"S.R.","email":"","affiliations":[],"preferred":false,"id":361178,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}