{"pageNumber":"359","pageRowStart":"8950","pageSize":"25","recordCount":10959,"records":[{"id":70209297,"text":"70209297 - 1982 - Topographic control of the deglaciation of eastern Massachusetts: Ice lobation and marine incursion","interactions":[{"subject":{"id":70209297,"text":"70209297 - 1982 - Topographic control of the deglaciation of eastern Massachusetts: Ice lobation and marine incursion","indexId":"70209297","publicationYear":"1982","noYear":false,"title":"Topographic control of the deglaciation of eastern Massachusetts: Ice lobation and marine incursion"},"predicate":"IS_PART_OF","object":{"id":70209295,"text":"70209295 - 1982 - Late Wisconsinan glaciation of New England: A proceeding volume of the symposium: Late Wisconsinan glaciation of New England held at Philadelphia, Pennsylvania March 13, 1980","indexId":"70209295","publicationYear":"1982","noYear":false,"title":"Late Wisconsinan glaciation of New England: A proceeding volume of the symposium: Late Wisconsinan glaciation of New England held at Philadelphia, Pennsylvania March 13, 1980"},"id":1}],"isPartOf":{"id":70209295,"text":"70209295 - 1982 - Late Wisconsinan glaciation of New England: A proceeding volume of the symposium: Late Wisconsinan glaciation of New England held at Philadelphia, Pennsylvania March 13, 1980","indexId":"70209295","publicationYear":"1982","noYear":false,"title":"Late Wisconsinan glaciation of New England: A proceeding volume of the symposium: Late Wisconsinan glaciation of New England held at Philadelphia, Pennsylvania March 13, 1980"},"lastModifiedDate":"2020-03-27T12:54:44","indexId":"70209297","displayToPublicDate":"1982-12-31T12:46:59","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Topographic control of the deglaciation of eastern Massachusetts: Ice lobation and marine incursion","docAbstract":"<p>No abstract 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,{"id":70221715,"text":"70221715 - 1982 - A stratigraphic framework for Cretaceous and Paleogene margins along the South Carolina and Georgia coastal sediments","interactions":[],"lastModifiedDate":"2021-06-30T11:53:02.166041","indexId":"70221715","displayToPublicDate":"1982-12-31T10:51:01","publicationYear":"1982","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"A stratigraphic framework for Cretaceous and Paleogene margins along the South Carolina and Georgia coastal sediments","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Georgia geologic survey information circular 53","largerWorkSubtype":{"id":2,"text":"State or Local Government Series"},"conferenceTitle":"2nd Symposium on Geology of the Southeastern Coastal Plain","conferenceDate":"March 5-6, 1979","conferenceLocation":"Americus, GA","language":"English","publisher":"Georgia Geologic Survey","usgsCitation":"Gohn, G., Bybell, L.M., Christopher, R.A., Owens, J., and Smith, C.C., 1982, A stratigraphic framework for Cretaceous and Paleogene margins along the South Carolina and Georgia coastal sediments, chap. <i>of</i> Georgia geologic survey information circular 53, p. 64-74.","productDescription":"11 p.","startPage":"64","endPage":"74","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":386873,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://epd.georgia.gov/outreach/publications/georgia-geologic-survey-information-circulars"},{"id":386874,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Georgia, South Carolina","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -78.44238281249999,\n              33.779147331286474\n            ],\n            [\n              -79.2333984375,\n              34.32529192442733\n            ],\n            [\n              -82.28759765625,\n              31.840232667909365\n            ],\n            [\n              -81.89208984375,\n              30.619004797647808\n            ],\n            [\n              -81.2548828125,\n              30.486550842588485\n            ],\n            [\n              -80.48583984375,\n              32.0639555946604\n            ],\n            [\n              -78.37646484375,\n              33.394759218577995\n            ],\n            [\n              -78.3984375,\n              33.687781758439364\n            ],\n            [\n              -78.44238281249999,\n              33.779147331286474\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Gohn, Gregory 0000-0003-2000-479X ggohn@usgs.gov","orcid":"https://orcid.org/0000-0003-2000-479X","contributorId":219822,"corporation":false,"usgs":true,"family":"Gohn","given":"Gregory","email":"ggohn@usgs.gov","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818499,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bybell, Laurel M. 0000-0002-4760-7542 lbybell@usgs.gov","orcid":"https://orcid.org/0000-0002-4760-7542","contributorId":1760,"corporation":false,"usgs":true,"family":"Bybell","given":"Laurel","email":"lbybell@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818500,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christopher, Raymond A.","contributorId":29812,"corporation":false,"usgs":true,"family":"Christopher","given":"Raymond","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":818501,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Owens, James P.","contributorId":9691,"corporation":false,"usgs":true,"family":"Owens","given":"James P.","affiliations":[],"preferred":false,"id":818502,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, Charles C.","contributorId":260705,"corporation":false,"usgs":false,"family":"Smith","given":"Charles","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":818503,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70221741,"text":"70221741 - 1982 - Late Eocene to early Oligocene calcareous nannofossils in Alabama and Mississippi","interactions":[],"lastModifiedDate":"2021-07-01T12:15:58.442859","indexId":"70221741","displayToPublicDate":"1982-12-31T10:47:07","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1871,"text":"Gulf Coast Association of Geological Societies Transactions","active":true,"publicationSubtype":{"id":10}},"title":"Late Eocene to early Oligocene calcareous nannofossils in Alabama and Mississippi","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Gulf Coast Association of Geological Societies","usgsCitation":"Bybell, L.M., 1982, Late Eocene to early Oligocene calcareous nannofossils in Alabama and Mississippi: Gulf Coast Association of Geological Societies Transactions, v. 32, p. 295-302.","productDescription":"8 p.","startPage":"295","endPage":"302","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":386900,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alabama, Mississippi","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -87.47314453125,\n              30.32547125932808\n            ],\n            [\n              -87.374267578125,\n              30.675715404167743\n            ],\n            [\n              -87.57202148437499,\n              31.015278981711266\n            ],\n            [\n              -85.02319335937499,\n              31.015278981711266\n            ],\n            [\n              -85.089111328125,\n              31.700129553985924\n            ],\n            [\n              -84.8583984375,\n              32.37996146435729\n            ],\n            [\n              -85.60546875,\n              34.985003130171066\n            ],\n            [\n              -90.252685546875,\n              35.003003395276714\n            ],\n            [\n              -90.867919921875,\n              34.20725938207231\n            ],\n            [\n              -91.153564453125,\n              33.58716733904656\n            ],\n            [\n              -91.12060546875,\n              32.8149783969858\n            ],\n            [\n              -90.999755859375,\n              32.37996146435729\n            ],\n            [\n              -91.58203125,\n              31.25037814985571\n            ],\n            [\n              -91.593017578125,\n              31.034108344903512\n            ],\n            [\n              -89.71435546875,\n              31.034108344903512\n            ],\n            [\n              -89.82421875,\n              30.65681556429287\n            ],\n            [\n              -89.62646484375,\n              30.230594564932193\n            ],\n            [\n              -89.483642578125,\n              30.059585699708215\n            ],\n            [\n              -87.4951171875,\n              30.07860131571654\n            ],\n            [\n              -87.47314453125,\n              30.32547125932808\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"32","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bybell, Laurel M. 0000-0002-4760-7542 lbybell@usgs.gov","orcid":"https://orcid.org/0000-0002-4760-7542","contributorId":1760,"corporation":false,"usgs":true,"family":"Bybell","given":"Laurel","email":"lbybell@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818599,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70221739,"text":"70221739 - 1982 - Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri","interactions":[],"lastModifiedDate":"2021-06-30T15:40:45.034309","indexId":"70221739","displayToPublicDate":"1982-12-31T10:29:07","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":8946,"text":"Tulane Studies in Geology and Paleontology","active":false,"publicationSubtype":{"id":10}},"title":"Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri","docAbstract":"<p><span>The paleontology and biostratigraphy of Tertiary, Cretaceous, and Paleozoic rocks in the upper Mississippi embayment are incompletely known because marine fossils are only locally present in these rocks. This study concerns material from two U.S. Geological Survey test wells drilled in New Madrid County, southeastern Missouri, as part of earthquake hazard studies in the northern Mississippi Embayment. Test well1 sampled lower Tertiary strata to a depth of 146ft; these strata were found to be late Eocene in age on the basis of sporomorphs. Test well1-X, 29ft northwest of well1, provided cuttings and cores from lower Tertiary, Upper Cretaceous, and lower Paleozoic rocks to a total depth of 2,316 ft below the Kelly bushing (at an altitude of 288 ft). Lithologic evidence suggests that the base of the Jackson Formation may be at 270 ft, but sporomorphs indicate that the base of the Jacksonian Stage (upper Eocene) is possibly at a depth of about 350ft in test well1-X. Lithologic units of the Claibornian Stage (middle Eocene) here consist of the Cockfield(?) and Cook Mountain(?) Formations and Memphis Sand, in descending order. The Claibornian could not be subdivided using sporomorphs from cuttings, but sporomorphs show that the top of the Sabinian Stage (top of the lower Eocene) is at about 1,055 ft; lithologically, the top of the Wilcox Group (top of the Flour Island Formation) is at 1,048 ft. Sporomorphs suggest that the top of the lower Sabinian (top of the Paleocene) is within the Flour Island Formation at about 1,105 ft. The next major lithologic break, the top of the Fort Pillow Sand at 1,186 ft, does not coincide with any detectable biostratigraphic boundary. Lithologically, the interval from 1,339 to 1,377 ft may belong to the Old Breastworks Formation; dinoflagellates from cuttings indicate that this interval is likely to be late Midwayan in age and, therefore, correlative with the Naheola Formation of the eastern Gulf Coast. The Porters Creek Clay extends from a probable top at 1,377 ft to 1,691 ft, and the base of the underlying Clayton Formation (Tertiary-Cretaceous contact) is at 1, 703 ft. Calcareous nannofossils, dinoflagellates, foraminifers, mollusks, ostracodes, and sporomorphs from continuous cores of the Porters Creek Clay and Clayton Formation indicate that the upper half of the Porters Creek correlates with the upper part of the same formation or perhaps partly with slightly younger rocks in the eastern Gulf Coast, the lowermost Porters Creek appears to correlate with the upper part of the Clayton Formation of the eastern Gulf Coast and with the Kincaid Formation of Texas, and the thin Clayton of the test well probably correlates with only the lower part of the thicker Clayton of the eastern Gulf Coast. Sporomorphs from McNairy Sand (Upper Cretaceous) cores indicate Maestrichtian and perhaps latest Campanian Age. Lower Paleozoic dolostone from 2,023 ft to total depth at 2,316 ft is barren of identifiable fossils except for a probable fragment of the fish Anatolepis; the dolostone is probably Late Cambrian in age. The McNairy Sand of New Madrid well 1-X seems to have been deposited in nonmarine to nearshore marine environments; the Clayton Formation and lower part of the Porters Creek Clay were deposited under marine conditions during an early Paleocene marine transgression. A major regression followed that continued through the end of Porters Creek time and perhaps into Naheola (late Midwayan) time; the Sabinian, Claibornian, and Jacksonian strata in southeastern Missouri were deposited primarily or entirely in nonmarine environments.&nbsp;</span></p>","language":"English","publisher":"Howard Tilton Memorial Library Journal Publishing","usgsCitation":"Frederiksen, N.O., Bybell, L.M., Christopher, R.A., Crone, A.J., Edwards, L.E., Gibson, T.G., Hazel, J.E., Repetski, J., Russ, D.P., Smith, C.C., and Ward, L.W., 1982, Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri: Tulane Studies in Geology and Paleontology, v. 17, no. 2, p. 23-45.","productDescription":"23 p.","startPage":"23","endPage":"45","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":386896,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":386895,"rank":1,"type":{"id":15,"text":"Index Page"},"url":"https://journals.tulane.edu/tsgp/article/view/787"}],"country":"United States","state":"Missouri","county":"New Madrid County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -89.63127136230469,\n              36.352739087358735\n            ],\n            [\n              -89.5330810546875,\n              36.352739087358735\n            ],\n            [\n              -89.5330810546875,\n              36.448351464205075\n            ],\n            [\n              -89.63127136230469,\n              36.448351464205075\n            ],\n            [\n              -89.63127136230469,\n              36.352739087358735\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"17","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Frederiksen, N. O.","contributorId":78356,"corporation":false,"usgs":true,"family":"Frederiksen","given":"N.","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":818587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bybell, Laurel M. 0000-0002-4760-7542 lbybell@usgs.gov","orcid":"https://orcid.org/0000-0002-4760-7542","contributorId":1760,"corporation":false,"usgs":true,"family":"Bybell","given":"Laurel","email":"lbybell@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818588,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Christopher, R. A.","contributorId":53775,"corporation":false,"usgs":true,"family":"Christopher","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":818589,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Crone, A. 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E.","contributorId":89187,"corporation":false,"usgs":false,"family":"Hazel","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":818593,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Repetski, J.E.","contributorId":38579,"corporation":false,"usgs":true,"family":"Repetski","given":"J.E.","affiliations":[],"preferred":false,"id":818594,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Russ, D. P.","contributorId":38538,"corporation":false,"usgs":true,"family":"Russ","given":"D.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":818595,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Smith, C. C.","contributorId":77205,"corporation":false,"usgs":true,"family":"Smith","given":"C.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":818596,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Ward, L. W.","contributorId":58704,"corporation":false,"usgs":true,"family":"Ward","given":"L.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":818597,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70221737,"text":"70221737 - 1982 - Paleocene to middle Eocene stratigraphy of Alabama","interactions":[],"lastModifiedDate":"2021-06-30T15:14:53.406931","indexId":"70221737","displayToPublicDate":"1982-12-31T10:10:18","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1871,"text":"Gulf Coast Association of Geological Societies Transactions","active":true,"publicationSubtype":{"id":10}},"title":"Paleocene to middle Eocene stratigraphy of Alabama","docAbstract":"<p>No abstract available.</p>","language":"English","publisher":"Gulf Coast Association of Geological Societies","usgsCitation":"Gibson, T., Mancini, E.A., and Bybell, L.M., 1982, Paleocene to middle Eocene stratigraphy of Alabama: Gulf Coast Association of Geological Societies Transactions, v. 32, p. 449-458.","productDescription":"10 p.","startPage":"449","endPage":"458","costCenters":[{"id":243,"text":"Eastern 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 \"}}]}","volume":"32","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Gibson, T. G.","contributorId":190324,"corporation":false,"usgs":false,"family":"Gibson","given":"T. G.","affiliations":[],"preferred":false,"id":818581,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mancini, E. A.","contributorId":18114,"corporation":false,"usgs":true,"family":"Mancini","given":"E.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":818582,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bybell, Laurel M. 0000-0002-4760-7542 lbybell@usgs.gov","orcid":"https://orcid.org/0000-0002-4760-7542","contributorId":1760,"corporation":false,"usgs":true,"family":"Bybell","given":"Laurel","email":"lbybell@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":818583,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70188756,"text":"70188756 - 1982 - Kinematic evolution of the junction of the San Andreas, Garlock, and Big Pine faults, California","interactions":[],"lastModifiedDate":"2020-10-21T15:44:58.054907","indexId":"70188756","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Kinematic evolution of the junction of the San Andreas, Garlock, and Big Pine faults, California","docAbstract":"<p><span>If the San Andreas fault with about 300 km of right slip, the Carlock fault with about 60 km of left slip, and the Big Pine fault with about 15 km of left slip are considered to have been contemporaneously active, a space problem at their high-angle junctions becomes apparent. Large crustal masses converge in the area of the junctions as a result of the simultaneous large displacements on the faults. We present here a model in which an early straight north-northwest–trending San Andreas deforms to its present bent configuration in response to a westward displacement of crust north of the Garlock fault. During this deformation, the crust north of the Garlock in the vicinity of the junction undergoes north-south shortening, while the fault junction migrates along the trace of the San Andreas fault to the southeast relative to its original position. As a result of this migration, the Mojave area is displaced to the east relative to the original junction position. We suggest a similar history in mirror image for the Big Pine fault and the areas of crust adjacent to it.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1982)10<358:KEOTJO>2.0.CO;2","usgsCitation":"Bohannon, R.G., and Howell, D.G., 1982, Kinematic evolution of the junction of the San Andreas, Garlock, and Big Pine faults, California: Geology, v. 10, no. 7, p. 358-363, https://doi.org/10.1130/0091-7613(1982)10<358:KEOTJO>2.0.CO;2.","productDescription":"6 p.","startPage":"358","endPage":"363","costCenters":[],"links":[{"id":342792,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Big Pine fault, Garlock fault, San Andreas 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 \"}}]}","volume":"10","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"594cd740e4b062508e3951e3","contributors":{"authors":[{"text":"Bohannon, Robert G. rbohannon@usgs.gov","contributorId":2255,"corporation":false,"usgs":true,"family":"Bohannon","given":"Robert","email":"rbohannon@usgs.gov","middleInitial":"G.","affiliations":[],"preferred":true,"id":699733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Howell, David G.","contributorId":59874,"corporation":false,"usgs":true,"family":"Howell","given":"David","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":699734,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70188949,"text":"70188949 - 1982 - Uranium-lead isotopic ages from the Sierra Nevada Batholith, California","interactions":[],"lastModifiedDate":"2017-06-27T17:47:14","indexId":"70188949","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Uranium-lead isotopic ages from the Sierra Nevada Batholith, California","docAbstract":"<p><span>This study provides new information on the timing and distribution of Mesozoic magmatic events in the Sierra Nevada batholithic complex chiefly between 36° and 37°N. latitude. U-Pb ages have been determined for 133 zircon and 7 sphene separates from 82 samples of granitoid rocks. Granitoid rocks in this area range in age from 217 to 80 m.y. Triassic intrusions are restricted to the east side of the batholith; Jurassic plutons occur south of the Triassic plutons east of the Sierra Nevada, as isolated masses within the Cretaceous batholith, and in the western foothills of the range; Cretaceous plutons form a continuous belt along the axis of the batholith and occur as isolated masses east of the Sierra Nevada. No granitic intrusions were emplaced for 37 m.y. east of the Sierra Nevada following the end of Jurassic plutonism. However, following emplacement of the eastern Jurassic granitoids, regional extension produced a fracture system at least 350 km long into which the dominantly mafic, calc-alkalic Independence dike swarm was intruded 148 m.y. ago. The dike fractures probably represents a period of regional crustal extension caused by a redistribution of the regional stress pattern accompanying the Nevadan orogeny. Intrusion of Cretaceous granitic plutons began in large volume about 120 m.y. ago in the western Sierra Nevada and migrated steadily eastward for 40 m.y. at a rate of 2.7 mm/y. This slow and constant migration indicates remarkably uniform conditions of subduction with perhaps downward migration of parent magma generation or a slight flattening of the subduction zone. Such steady conditions could be necessary for the production of large batholithic complexes such as the Sierra Nevada. The abrupt termination of plutonism 80 m.y. ago may have resulted from an increased rate of convergence of the American and eastern Pacific plates and dramatic flattening of the subduction zone. U-Pb ages of the Giant Forest-alaskite sequence in Sequoia National Park are all in the range 99±3 m.y., indicating a relatively short period of emplacement and cooling for this nested group of plutons. U-Pb ages of a mafic inclusion and its host granodiorite indicate that both were derived from a common source or that the mafic inclusion was totally equilibrated with the granodioritic magma. Comparison of isotopic ages determined by different methods such as zircon U-Pb, sphene U-Pb, hornblende K-Ar, and biotite K-Ar suggests that zircon U-Pb ages generally approximate the emplacement age of a pluton. However, some plutons probably contain inherited or entrained old zircons, and the zircons of some samples are disturbed by younger thermal and metamorphic events. The ages reported here are consistent with U-Pb age determinations previously made on granitic rocks to the north [Stern et al., 1981], The age distribution of granitic belts determined here is in general agreement with those established by K-Ar dating [Evernden and Kistler, 1970] but does not differentiate the five epochs of plutonism determined in their study.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB06p04761","usgsCitation":"Chen, J., 1982, Uranium-lead isotopic ages from the Sierra Nevada Batholith, California: Journal of Geophysical Research B: Solid Earth, v. 87, no. B6, p. 4761-4784, https://doi.org/10.1029/JB087iB06p04761.","productDescription":"24 p.","startPage":"4761","endPage":"4784","costCenters":[],"links":[{"id":343049,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sierra Nevada","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -118.89404296875,\n              35.37113502280101\n            ],\n            [\n              -117.1142578125,\n              35.38904996691167\n            ],\n            [\n              -116.76269531249999,\n              35.47856499535729\n            ],\n            [\n              -116.12548828124999,\n              36.03133177633187\n            ],\n            [\n              -120.0146484375,\n              39.01064750994083\n            ],\n            [\n              -120.5419921875,\n              40.07807142745009\n            ],\n            [\n              -121.35498046875,\n              40.94671366508002\n            ],\n            [\n              -122.14599609375001,\n              41.44272637767212\n            ],\n            [\n              -122.40966796874999,\n              40.97989806962013\n            ],\n            [\n              -122.10205078125,\n              40.54720023441049\n            ],\n            [\n              -121.2451171875,\n              39.198205348894795\n            ],\n            [\n              -120.52001953124999,\n              38.35888785866677\n            ],\n            [\n              -120.21240234375001,\n              37.63163475580643\n            ],\n            [\n              -119.794921875,\n              37.19533058280065\n            ],\n            [\n              -118.89404296875,\n              35.37113502280101\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"87","issue":"B6","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"59536ee0e4b062508e3c7b17","contributors":{"authors":[{"text":"Chen, J.","contributorId":104634,"corporation":false,"usgs":true,"family":"Chen","given":"J.","email":"","affiliations":[],"preferred":false,"id":701554,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70188950,"text":"70188950 - 1982 - The occurrence of the Complexiopollis-Atlantopollis zone (Palynomorphs) in the Eagle Ford Group (Upper Cretaceous) of Texas","interactions":[],"lastModifiedDate":"2024-07-01T22:30:39.172129","indexId":"70188950","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2412,"text":"Journal of Paleontology","active":true,"publicationSubtype":{"id":10}},"title":"The occurrence of the Complexiopollis-Atlantopollis zone (Palynomorphs) in the Eagle Ford Group (Upper Cretaceous) of Texas","docAbstract":"<p><span>The Lower and lower Upper Cretaceous palynological zones defined in the Atlantic Coastal Plain Province and which occur in the eastern Gulf Coastal Plain Province are characterized by a paucity of marine invertebrate fossils. As a result, correlation of these zones with European and provincial stages, as well as with other microfossil and megafossil zones is tenuous. However, an examination of a complete section of the Eagle Ford Group and adjacent strata in Texas reveals that: 1) the upper part of the Woodbine Formation and the Tarrant Formation of the overlying Eagle Ford Group represent a biostratigraphic interval that is absent in the Atlantic and eastern Gulf Coastal Plain Provinces; 2) the Complexiopollis-Atlantopollis Zone (zone IV of some authors) occurs within the Britton Formation (Eagle Ford Group), and is equivalent to the upper part of the Rotalipora cushmani-greenhornensis Subzone (planktic foraminifers) and possibly to the Sciponoceras gracile Zone (ammonites); 3) the Arcadia Park Formation (Eagle Ford Group) contains a mixed assemblage of palynomorphs that includes guides to both the Complexiopollis-Atlantopollis and the overlying Complexiopollis exigua-Santalacites minor Zones, suggesting that biostratigraphic equivalents of the Arcadia Park Formation are not represented in the Atlantic and eastern Gulf Coastal Plain Provinces; and 4) in the basal part of the Austin Chalk of Texas, only one guide palynomorph to the Complexiopollis-Atlantopollis Zone was recognized, but guides to the Complexiopollis exigua-Santalacites minor Zone are present. The Tuscaloosa Group of the eastern Gulf Coastal Plain appears to be biostratigraphically equivalent to the Complexiopollis-Atlantopollis Zone, and therefore correlative with the middle to upper part of the Britton Formation of the Eagle Ford Group.</span></p>","language":"English","publisher":"SEPM Society for Sedimentary Geology","usgsCitation":"Christopher, R.A., 1982, The occurrence of the Complexiopollis-Atlantopollis zone (Palynomorphs) in the Eagle Ford Group (Upper Cretaceous) of Texas: Journal of Paleontology, v. 56, no. 2, p. 525-541.","productDescription":"17 p.","startPage":"525","endPage":"541","costCenters":[],"links":[{"id":343050,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.jstor.org/stable/1304481"},{"id":343051,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Texas","otherGeospatial":"Eagle Ford Group","geographicExtents":"{\n  \"type\": 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,{"id":70188986,"text":"70188986 - 1982 - Use of packrat middens to determine rates of cliff retreat in the eastern Grand Canyon, Arizona","interactions":[],"lastModifiedDate":"2020-10-21T15:57:23.856889","indexId":"70188986","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Use of packrat middens to determine rates of cliff retreat in the eastern Grand Canyon, Arizona","docAbstract":"<p><span>Packrat midden data can be used to calculate rates of cliff retreat by relating midden age to the distance between cliff face and midden. Regression analysis using 14 radiocarbon-dated packrat deposits from the Mississippian Redwall Limestone in the eastern Grand Canyon suggests that the Redwall has been retreating at an average rate of 0.45 m/10</span><sup>3</sup><span><span>&nbsp;</span></span><sup>14</sup><span>C yr. This rate of cliff retreat, which is comparable to other cliff-retreat rates reported from arid environments, implies that the Colorado River cut through the Redwall Limestone in the vicinity of Horseshoe Mesa about 3.7 m.y. B.P.</span></p>","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1982)10<597:UOPMTD>2.0.CO;2","usgsCitation":"Cole, K.L., and Mayer, L., 1982, Use of packrat middens to determine rates of cliff retreat in the eastern Grand Canyon, Arizona: Geology, v. 10, no. 11, p. 597-599, https://doi.org/10.1130/0091-7613(1982)10<597:UOPMTD>2.0.CO;2.","productDescription":"3 p.","startPage":"597","endPage":"599","costCenters":[],"links":[{"id":343072,"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        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -114.99938964843749,\n              35.46961797120201\n            ],\n            [\n              -111.302490234375,\n              35.46961797120201\n            ],\n            [\n              -111.302490234375,\n              36.910372213522535\n            ],\n            [\n              -114.99938964843749,\n              36.910372213522535\n            ],\n            [\n              -114.99938964843749,\n              35.46961797120201\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"10","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59660d1de4b0d1f9f05cef29","contributors":{"authors":[{"text":"Cole, Kenneth L.","contributorId":48533,"corporation":false,"usgs":true,"family":"Cole","given":"Kenneth","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":702249,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mayer, Larry","contributorId":77936,"corporation":false,"usgs":true,"family":"Mayer","given":"Larry","affiliations":[],"preferred":false,"id":702250,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70188952,"text":"70188952 - 1982 - Terranes and suture zones in east central Alaska","interactions":[],"lastModifiedDate":"2017-06-27T18:13:37","indexId":"70188952","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Terranes and suture zones in east central Alaska","docAbstract":"<p><span>East central Alaska, with its 17 terranes, forms a part of the mosaic of allochthonous terranes that join the North American and Siberian plates. These terranes range from continental and continental margin, such as the Tatonduk with its thick well-bedded succession of marine shelf rocks, to seamount, arc, and ocean floor terranes. The Yukon crystalline terrane, the largest described here, is a composite of at least four subterranes juxtaposed across the Tintina fault with the Tatonduk terrane, a northwestern extension of the North American plate in Alaska. Inboard of the Yukon crystalline terrane are packets of closely appressed microterranes separated from the Tatonduk and other terranes belonging to North America by major suture zones. These microterranes lie between North America and the mosaic of accretionary terranes that form the more southerly part of Alaska. The most obviously allochthonous microterranes within the suture zones are the Woodchopper Canyon, an Early Devonian basaltic seamount, and the White Mountains, an Ordovician volcanic arc terrane capped by Silurian and Devonian carbonate bank deposits. The nearest counterpart of these terranes is the Alexander terrane in southeastern Alaska. The Tintina fault of Mesozoic and Cenozoic age, like the Denali fault, primarily follows old suture zones that separate terranes. Strike slip faulting developed after collision in places where further convergence was oblique to the terrane margins. Where terranes met head-on, their leading edges lie along a multiple set of high-angle faults that outline microterranes in accretion zones.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB05p03718","usgsCitation":"Churkin, M., Foster, H., Chapman, R.M., and Weber, F.R., 1982, Terranes and suture zones in east central Alaska: Journal of Geophysical Research B: Solid Earth, v. 87, no. B5, p. 3718-3730, https://doi.org/10.1029/JB087iB05p03718.","productDescription":"13 p.","startPage":"3718","endPage":"3730","costCenters":[],"links":[{"id":343053,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {\n        \"stroke\": \"#555555\",\n        \"stroke-width\": 2,\n        \"stroke-opacity\": 1,\n        \"fill\": \"#555555\",\n        \"fill-opacity\": 0.5\n      },\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -151.5234375,\n              67.67608458198097\n            ],\n            [\n              -151.6552734375,\n              62.734600877063585\n            ],\n            [\n              -141.0205078125,\n              62.694309593663185\n            ],\n            [\n              -141.064453125,\n              67.65938637009882\n            ],\n            [\n              -151.5234375,\n              67.67608458198097\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"87","issue":"B5","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"59536edfe4b062508e3c7b13","contributors":{"authors":[{"text":"Churkin, M. Jr.","contributorId":46682,"corporation":false,"usgs":true,"family":"Churkin","given":"M.","suffix":"Jr.","affiliations":[],"preferred":false,"id":701601,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foster, H.L.","contributorId":34894,"corporation":false,"usgs":true,"family":"Foster","given":"H.L.","email":"","affiliations":[],"preferred":false,"id":701602,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chapman, R. M.","contributorId":47380,"corporation":false,"usgs":true,"family":"Chapman","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":701603,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Weber, F. R.","contributorId":105303,"corporation":false,"usgs":true,"family":"Weber","given":"F.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":701604,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70188680,"text":"70188680 - 1982 - Marine ice-pushed boulder ridge, Beaufort Sea, Alaska","interactions":[],"lastModifiedDate":"2017-06-21T09:48:11","indexId":"70188680","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":894,"text":"Arctic","active":true,"publicationSubtype":{"id":10}},"title":"Marine ice-pushed boulder ridge, Beaufort Sea, Alaska","docAbstract":"<div data-canvas-width=\"135.02486666666667\">A steep-faced boulder&nbsp;ridge up to&nbsp;4m high by 300m&nbsp;long&nbsp;was encountered along the arctic coast&nbsp;east&nbsp;of Prudhoe Bay,&nbsp;Alaska,&nbsp;in&nbsp;the summer&nbsp;of 1979.&nbsp;Marine occurrences of similar ridges are rare. Since ice-push sorts cobble- and boulder-sized material in the construction of a ridge, recent onshore excursions of ice due to wind stress on the fast ice are believed to be responsible for building the boulder ridge. Ice push is a mechanism that preferentially sorts cobble- and boulder-sized material from 1-2m water depths and that forms boulder ridges in areas of high boulder concentrations.</div>","language":"English","publisher":"Arctic Institute of North America","doi":"10.14430/arctic2330","usgsCitation":"Barnes, P.W., 1982, Marine ice-pushed boulder ridge, Beaufort Sea, Alaska: Arctic, v. 35, no. 2, p. 312-316, https://doi.org/10.14430/arctic2330.","productDescription":"5 p.","startPage":"312","endPage":"316","costCenters":[],"links":[{"id":480249,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14430/arctic2330","text":"Publisher Index Page"},{"id":342702,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Canning River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -147.43652343749997,\n              68.86351700272681\n            ],\n            [\n              -141.009521484375,\n              68.86351700272681\n            ],\n            [\n              -141.009521484375,\n              70.91304887381109\n            ],\n            [\n              -147.43652343749997,\n              70.91304887381109\n            ],\n            [\n              -147.43652343749997,\n              68.86351700272681\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"35","issue":"2","noUsgsAuthors":false,"publicationDate":"1982-01-01","publicationStatus":"PW","scienceBaseUri":"594b85b7e4b062508e382bc0","contributors":{"authors":[{"text":"Barnes, Peter W.","contributorId":6042,"corporation":false,"usgs":true,"family":"Barnes","given":"Peter","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":698878,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70188667,"text":"70188667 - 1982 - Source parameters of the 1980 Mammoth Lakes, California, earthquake sequence","interactions":[],"lastModifiedDate":"2017-06-20T17:19:06","indexId":"70188667","displayToPublicDate":"1982-12-31T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Source parameters of the 1980 Mammoth Lakes, California, earthquake sequence","docAbstract":"<p><span>From the more than 1500 Mammoth Lakes earthquakes recorded on three-component digital seismographs (Spudich et al., 1981), 150 were used in an analysis of the locations, mechanism, and source parameters. A composite fault plane solution of nine earthquakes 3.9 ≤ </span><i>M</i><span> ≤ 5.1 defines a right-lateral strike slip mechanism on a steeply dipping nearly east-west plane striking S75°E or left-lateral strike slip on a nearly north-south plane striking N10°E. Vertical cross sections of well-located aftershocks indicate possibly three east-west planes that coincide with the locations of the four largest earthquakes with </span><i>M<sub>L</sub></i><span> ≥ 6.0. Using the spectral analysis of </span><i>S</i><span> waves (Brune, 1970), source parameters for 67 earthquakes were determined. Forty-eight had magnitudes greater than or equal to 3.0. Seismic moments ranged from 9.20×10</span><sup>18</sup><span> dyn cm to 2.33×10</span><sup>24</sup><span> dyn cm. Earthquakes with seismic moment greater than about 1.0×10</span><sup>21</sup><span> dyn cm had nearly constant stress drops (≃ 50 bars); earthquakes with seismic moment less than about 1.0×10</span><sup>21</sup><span> dyn cm had stress drops that apparently decrease as seismic moment decreases.</span></p>","language":"English","publisher":"John Wiley & Sons","doi":"10.1029/JB087iB06p04595","usgsCitation":"Archuleta, R.J., Cranswick, E., Mueller, C., and Spudich, P., 1982, Source parameters of the 1980 Mammoth Lakes, California, earthquake sequence: Journal of Geophysical Research B: Solid Earth, v. 87, no. B6, p. 4595-4607, https://doi.org/10.1029/JB087iB06p04595.","productDescription":"13 p.","startPage":"4595","endPage":"4607","costCenters":[],"links":[{"id":480248,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/jb087ib06p04595","text":"Publisher Index Page"},{"id":342687,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","county":"Mono County","otherGeospatial":"Mammoth Lakes","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-119.5771,38.7084],[-119.5523,38.6912],[-119.5498,38.6895],[-119.4543,38.6231],[-119.4492,38.6196],[-119.3306,38.5364],[-119.2389,38.4722],[-119.218,38.4575],[-119.1743,38.4271],[-119.1538,38.4127],[-119.1416,38.4042],[-119.0196,38.3179],[-118.9933,38.2993],[-118.9547,38.272],[-118.9464,38.2663],[-118.9117,38.2417],[-118.8591,38.2047],[-118.8307,38.1843],[-118.7901,38.1554],[-118.7779,38.1467],[-118.721,38.106],[-118.6108,38.0273],[-118.5479,37.9824],[-118.5031,37.9504],[-118.4701,37.9269],[-118.4271,37.8959],[-118.3944,37.8726],[-118.3573,37.8459],[-118.2878,37.7957],[-118.1844,37.7208],[-118.1091,37.6663],[-118.0805,37.6453],[-118.0559,37.6273],[-118.0227,37.6028],[-117.9519,37.5509],[-117.8357,37.4655],[-117.918,37.4653],[-117.9794,37.4647],[-118.0009,37.4645],[-118.3135,37.463],[-118.346,37.4628],[-118.3709,37.4626],[-118.375,37.4622],[-118.4068,37.4625],[-118.4213,37.4626],[-118.4544,37.4629],[-118.5153,37.4634],[-118.5309,37.4636],[-118.5495,37.4637],[-118.5669,37.4638],[-118.5918,37.4636],[-118.6109,37.4637],[-118.6248,37.4638],[-118.6417,37.4639],[-118.7489,37.4642],[-118.7756,37.4639],[-118.7917,37.4821],[-118.8014,37.4917],[-118.8119,37.4868],[-118.8177,37.4882],[-118.8253,37.4841],[-118.834,37.4815],[-118.8392,37.4824],[-118.8526,37.477],[-118.859,37.4821],[-118.8606,37.4902],[-118.8606,37.4979],[-118.8652,37.5038],[-118.8692,37.5075],[-118.8785,37.508],[-118.8825,37.5103],[-118.8842,37.5185],[-118.8957,37.5253],[-118.9027,37.5258],[-118.9038,37.5326],[-118.9095,37.5376],[-118.917,37.5494],[-118.9275,37.5481],[-118.9379,37.5518],[-118.9425,37.56],[-118.9453,37.5636],[-118.9505,37.5646],[-118.9616,37.5619],[-118.9645,37.5578],[-118.9727,37.5588],[-118.9785,37.5565],[-118.9808,37.5602],[-118.9825,37.5643],[-118.9906,37.5666],[-119.001,37.5702],[-119.0057,37.5725],[-119.0114,37.5793],[-119.0236,37.5857],[-119.0253,37.5903],[-119.0282,37.5953],[-119.0345,37.6048],[-119.0327,37.6071],[-119.0309,37.6161],[-119.0321,37.622],[-119.0321,37.6247],[-119.043,37.6343],[-119.0506,37.6398],[-119.0534,37.6416],[-119.0603,37.6539],[-119.0626,37.6702],[-119.0695,37.6838],[-119.0764,37.6929],[-119.0932,37.7038],[-119.1013,37.7134],[-119.1065,37.722],[-119.1175,37.7302],[-119.1262,37.7329],[-119.1361,37.7357],[-119.1466,37.7335],[-119.1617,37.7362],[-119.1762,37.7367],[-119.1879,37.7367],[-119.1943,37.7372],[-119.2013,37.7354],[-119.2112,37.7205],[-119.2206,37.7146],[-119.2281,37.716],[-119.2444,37.7292],[-119.2484,37.7305],[-119.2543,37.7287],[-119.2578,37.726],[-119.2682,37.7396],[-119.2571,37.7428],[-119.253,37.7478],[-119.2548,37.7555],[-119.2489,37.7573],[-119.2431,37.7695],[-119.2384,37.7731],[-119.2308,37.7749],[-119.2262,37.7781],[-119.2203,37.7799],[-119.2186,37.7831],[-119.2139,37.7907],[-119.2075,37.7925],[-119.2028,37.7957],[-119.201,37.8016],[-119.2056,37.8102],[-119.2138,37.8134],[-119.2196,37.8198],[-119.2161,37.8247],[-119.2097,37.8261],[-119.2061,37.8283],[-119.2079,37.8333],[-119.209,37.8379],[-119.2026,37.8406],[-119.2014,37.8433],[-119.2026,37.8465],[-119.2084,37.8474],[-119.216,37.8465],[-119.2183,37.8479],[-119.2136,37.8565],[-119.2165,37.8678],[-119.2147,37.8732],[-119.2124,37.8755],[-119.2071,37.8809],[-119.2094,37.8895],[-119.2175,37.8991],[-119.2292,37.9068],[-119.2402,37.9095],[-119.2443,37.9105],[-119.256,37.9087],[-119.2618,37.91],[-119.263,37.9105],[-119.2665,37.9155],[-119.267,37.9246],[-119.2804,37.9323],[-119.2915,37.9328],[-119.2944,37.9368],[-119.2944,37.9414],[-119.3096,37.945],[-119.3154,37.9573],[-119.3218,37.9682],[-119.32,37.974],[-119.3159,37.979],[-119.3171,37.9822],[-119.3179,37.9864],[-119.3088,38.0067],[-119.3083,38.0192],[-119.3049,38.0238],[-119.312,38.0451],[-119.3225,38.0495],[-119.3235,38.0589],[-119.327,38.0658],[-119.3358,38.0661],[-119.3451,38.0827],[-119.3497,38.0842],[-119.3574,38.0828],[-119.3805,38.092],[-119.3899,38.0982],[-119.3979,38.1063],[-119.4131,38.1078],[-119.4232,38.1071],[-119.4305,38.1165],[-119.4411,38.1034],[-119.4407,38.0967],[-119.4465,38.0937],[-119.4579,38.0959],[-119.4635,38.0976],[-119.4647,38.1038],[-119.4613,38.1096],[-119.4723,38.1179],[-119.4698,38.1287],[-119.487,38.1314],[-119.4891,38.1441],[-119.4967,38.1495],[-119.4972,38.1566],[-119.4992,38.1582],[-119.5022,38.1573],[-119.5045,38.1528],[-119.5045,38.1437],[-119.5022,38.1378],[-119.5045,38.136],[-119.5162,38.1374],[-119.5303,38.1423],[-119.5461,38.1523],[-119.5502,38.1537],[-119.5677,38.155],[-119.5753,38.1577],[-119.5771,38.1623],[-119.5783,38.1758],[-119.5806,38.179],[-119.5853,38.1826],[-119.5906,38.1845],[-119.5929,38.1858],[-119.607,38.1867],[-119.6269,38.1935],[-119.6316,38.2003],[-119.6258,38.2071],[-119.624,38.2252],[-119.624,38.2288],[-119.6193,38.232],[-119.6053,38.2347],[-119.6094,38.2415],[-119.6141,38.2438],[-119.6211,38.2506],[-119.6141,38.2574],[-119.613,38.2619],[-119.6165,38.2637],[-119.62,38.2669],[-119.6276,38.2669],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Ralph J.","contributorId":77801,"corporation":false,"usgs":true,"family":"Archuleta","given":"Ralph","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":698850,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cranswick, Edward","contributorId":15611,"corporation":false,"usgs":true,"family":"Cranswick","given":"Edward","email":"","affiliations":[],"preferred":false,"id":698851,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mueller, Charles","contributorId":57178,"corporation":false,"usgs":true,"family":"Mueller","given":"Charles","affiliations":[],"preferred":false,"id":698852,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Spudich, Paul","contributorId":54579,"corporation":false,"usgs":true,"family":"Spudich","given":"Paul","affiliations":[],"preferred":false,"id":698853,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70011472,"text":"70011472 - 1982 - Active geologic processes in Barrow Canyon, northeast Chukchi Sea","interactions":[],"lastModifiedDate":"2024-10-11T17:33:36.143825","indexId":"70011472","displayToPublicDate":"1982-11-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Active geologic processes in Barrow Canyon, northeast Chukchi Sea","docAbstract":"<p><span>Circulation patterns on the shelf and at the shelf break appear to dominate the Barrow Canyon system. The canyon's shelf portion underlies and is maintained by the Alaska Coastal Current (A.C.C.), which flows northeastward along the coast toward the northeast corner of the broad Chukchi Sea. Offshelf and onshelf advective processes are indicated by oceanographic measurements of other workers. These advective processes may play an important role in the production of bedforms that are found near the canyon head as well as in processes of erosion or non-deposition in the deeper canyon itself. Coarse sediments recovered from the canyon axis at 400 to 570 m indicate that there is presently significant flow along the canyon. The canyon hooks left at a point north of Point Barrow where the A.C.C. loses its coastal constriction. The left hook, as well as preferential west-wall erosion, continues down to the abyssal plain of the Canada Basin at 3800 m. A possible explanation for the preferential west-wall erosion along the canyon, at least for the upper few hundred meters, is that the occasional upwelling events, which cause nutrient-rich water to flow along the west wall would in turn cause larger populations of burrowing organisms to live there than on the east wall, and that these organisms cause high rates of bioerosion. This hypothesis assumes that the dominant factor in the canyon's erosion is biological activity, not current velocity. Sedimentary bedforms consisting of waves and furrows are formed in soft mud in a region on the shelf west of the canyon head; their presence there perhaps reflects: (a) the supply of fine suspended sediments delivered by the A.C.C. from sources to the south, probably the Yukon and other rivers draining northwestern Alaska; and (b) the westward transport of these suspended sediments by the prevailing Beaufort Gyre which flows along the outer shelf.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(82)90061-5","usgsCitation":"Eittreim, S., Grantz, A., and Greenberg, J., 1982, Active geologic processes in Barrow Canyon, northeast Chukchi Sea: Marine Geology, v. 50, no. 1-2, p. 61-76, https://doi.org/10.1016/0025-3227(82)90061-5.","productDescription":"16 p.","startPage":"61","endPage":"76","costCenters":[],"links":[{"id":220708,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Barrow Canyon, northeast Chukchi Sea","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -164.9782036874746,\n              72.59817606230985\n            ],\n            [\n              -164.9782036874746,\n              70.87893177138113\n            ],\n            [\n              -153.0605673497228,\n              70.87893177138113\n            ],\n            [\n              -153.0605673497228,\n              72.59817606230985\n            ],\n            [\n              -164.9782036874746,\n              72.59817606230985\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"50","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e6abe4b0c8380cd47592","contributors":{"authors":[{"text":"Eittreim, Stephen","contributorId":102553,"corporation":false,"usgs":true,"family":"Eittreim","given":"Stephen","email":"","affiliations":[],"preferred":false,"id":361193,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grantz, Arthur agrantz@usgs.gov","contributorId":2585,"corporation":false,"usgs":true,"family":"Grantz","given":"Arthur","email":"agrantz@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":361192,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Greenberg, Jonathan","contributorId":9627,"corporation":false,"usgs":true,"family":"Greenberg","given":"Jonathan","affiliations":[],"preferred":false,"id":361194,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011552,"text":"70011552 - 1982 - Modern sedimentary environments on the Rhode Island inner shelf, off the eastern United States","interactions":[],"lastModifiedDate":"2024-10-16T15:41:34.328013","indexId":"70011552","displayToPublicDate":"1982-10-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Modern sedimentary environments on the Rhode Island inner shelf, off the eastern United States","docAbstract":"<p><span>Analyses of side-scan sonar records along with previously published bathymetric, textural and subbottom data reveal the sedimentary environments on the inner Continental Shelf south of Narragansett Bay, Rhode Island. The bottom topography in this area is characterized by a broad central depression bordered by shallow, irregular sea floor on the north and east and by a discontinuous, curvilinear ridge on the south and west.</span></p><p><span>Four distinct environments were identified:</span></p><p><span>(1) Pre-Mesozoic coastal rocks are exposed on the sea floor at isolated locations near the shore (waterdepths &lt; 32 m). These exposures have pronounced, irregular topographic relief and produce blotchy patterns op side-scan sonographs. <br></span></p><p><span>(2) Glacial moraine deposits form the discontinuous offshore ridge. These deposits have hummocky sea-floor relief, are covered by lag gravel and boulders, and appear as predominantly black (strongly reflective) patterns on the side-scan records. <br></span></p><p><span>(3) Over most of the shallow, irregular bottom in the northeast, on the flanks of the morainal ridge, and atop bathymetric highs, the sea floor is characterized as a mosaic of light and dark patches and lineations. The dark (more reflective) zones are areas of coarse sands and megaripples (wavelengths = 0.8--1.2 m) that either have no detectable relief or are slightly depressed relative to surrounding (fight) areas of finer-grained sands. <br></span></p><p><span>(4) Smooth beds that produce nearly featureless patterns on the sonographs occupy the broad central bathymetric depression as well as smaller depressions north and east of Block Island. Within the broad depression, sonographs having practically no shading indicate a central zone of modern sandy silt, whereas records having moderate tonality define a peripheral belt of silty sand. <br></span></p><p><span>The sedimentary environments that are outlined range from erosional or nondepositional (bedrock, glacial moraine) to depositional (featureless beds), and include areas that may reflect a combination of erosional and depositional processes (textural patchiness). The distribution and characteristics of the environments reveal the general post-glacial sedimentary history of this area and provide a guide to future utilization of the shelf surface.</span></p><p><span><br data-mce-bogus=\"1\"></span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(82)90042-1","usgsCitation":"Knebel, H.J., Needell, S.W., and O’Hara, C.J., 1982, Modern sedimentary environments on the Rhode Island inner shelf, off the eastern United States: Marine Geology, v. 49, no. 3-4, p. 241-256, https://doi.org/10.1016/0025-3227(82)90042-1.","productDescription":"16 p.","startPage":"241","endPage":"256","costCenters":[],"links":[{"id":221050,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Rhode 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Island\",\"nation\":\"USA  \"}}]}","volume":"49","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5ca0e4b0c8380cd6fe2b","contributors":{"authors":[{"text":"Knebel, Harley J.","contributorId":25930,"corporation":false,"usgs":true,"family":"Knebel","given":"Harley","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":361382,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Needell, Sally W.","contributorId":106874,"corporation":false,"usgs":true,"family":"Needell","given":"Sally","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":361381,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"O’Hara, Charles J.","contributorId":11228,"corporation":false,"usgs":true,"family":"O’Hara","given":"Charles","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":361380,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70199512,"text":"70199512 - 1982 - Geologic estimates and future costs of strip mining coal","interactions":[],"lastModifiedDate":"2018-09-20T15:26:51","indexId":"70199512","displayToPublicDate":"1982-09-01T16:39:35","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5749,"text":"Energy Systems and Policy","active":true,"publicationSubtype":{"id":10}},"title":"Geologic estimates and future costs of strip mining coal","docAbstract":"<p>Geologic coal-resource appraisals, which typically describe the location and general characteristics of coalbeds, do not generally provide enough information to estimate the cost of developing the resource or to predict the escalation of costs expected to result from physical depletion. This paper considers the nature of data and methods of appraisal required to provide this cost information to policymakers. Illinois is used as a prototype area for analysis because of its long history of coal mining and its demonstrated coal reserve base of strippable coal that exceeds all but two of the States in the United States. Evidence of gradual depletion of Illinois strippable coal reserves is provided by declining labor productivity, decreasing average mine size, and increasing overburden depth. The procedures used to estimate the costs of mining remaining deposits indicate that the physical characteristics that will affect mining costs most significantly are depth of overburden, thickness of coal seam, and areal extent of coal of the minable reserve blocks. Findings presented here provide guidelines for the collection of economic and geologic data in order to improve coal appraisals, particularly those currently in progress in the Western United States. <br><br></p>","language":"English","publisher":"Taylor & Francis Inc.","usgsCitation":"Attanasi, E., and Green, E., 1982, Geologic estimates and future costs of strip mining coal: Energy Systems and Policy, v. 6, no. 3, p. 193-212.","productDescription":"20 p.","startPage":"193","endPage":"212","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":357526,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Attanasi, Emil 0000-0001-6845-7160 attanasi@usgs.gov","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":1809,"corporation":false,"usgs":true,"family":"Attanasi","given":"Emil","email":"attanasi@usgs.gov","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":745654,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Green, E.K.","contributorId":15760,"corporation":false,"usgs":true,"family":"Green","given":"E.K.","email":"","affiliations":[],"preferred":false,"id":745655,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011849,"text":"70011849 - 1982 - Sedimentation and deformation in the Amlia Fracture Zone sector of the Aleutian Trench","interactions":[],"lastModifiedDate":"2024-10-16T16:11:18.066367","indexId":"70011849","displayToPublicDate":"1982-07-02T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentation and deformation in the Amlia Fracture Zone sector of the Aleutian Trench","docAbstract":"<p><span>A wedge-shaped, landward thickening mass of sedimentary deposits composed chiefly of terrigenous turbidite beds underlies the west-south west-trending Amlia sector (172°20′–173°30′W) of the Aleutian Trench. Pacific oceanic crust dips northward beneath the sector's sedimentary wedge and obliquely underthrusts (30° off normal) the adjacent Aleutian Ridge. The trench floor and subsurface strata dip gently northward toward the base of the inner trench slope. The dip of the trench deposits increases downsection from about 0.2° at the trench floor to as much as 6–7° just above basement. The wedge is typically 2–2.5 km thick, but it is thickest (3.7–4.0 km) near the base of the inner slope overlying the north-trending Amlia Fracture Zone and also east of this structure. Slight undulations and relatively abrupt offsets of the trench floor reflect subsurface and generally west-trending structures within the wedge that are superimposed above ridges and swales in the underlying oceanic basement. The southern or seaward side of some of these structures are bordered by high-angle faults or abrupt flexures. Across these offsets the northern side of the trench floor and underlying wedge is typically upthrown.</span></p><p><span>West-flowing turbidity currents originating along the Alaskan segment of the trench (1200 km to the east) probably formed the greater part of the Amlia wedge during the past 0.5 m.y. The gentle northward or cross-trench inclination of the trench floor and underlying wedge probably reflects regional downbending of the oceanic lithosphere and trench-floor basement faulting and rotation. Much of the undulatory flexuring of the trench wedge can be attributed to differential compaction over buried basement relief. However, abrupt structural offsets attest to basement faulting. Faulting is associated with extensional earthquakes in the upper crust. The west-trending basement offsets are probably normal faults that dip steeply south or antithetic to the north dip of the subducting oceanic crust. Up-to-arc extensional faulting can be attributed to the downbending of the Pacific plate into the Aleutian subduction zone. The rupturing direction and dip is controlled by zones of crustal weakness that parallel north Pacific magnetic anomalies, which were formed south of a late Cretaceous—early Tertiary spreading center (Kula—Pacific Ridge). The strike of these anomalies is fortuitously nearly parallel to the Amlia sector. The up-to-arc fracturing style may locally assist in elevating blocks of trench deposits to form the toe of the trench's landward slope, which is in part underlain by a compressionally thickened accretionary mass of older trench deposits. Compressional structures that can be related to underthrusting are only indistinctly recorded in the turbidite wedge that underlies the trench floor.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(82)90132-3","usgsCitation":"Scholl, D., Vallier, T., and Stevenson, A., 1982, Sedimentation and deformation in the Amlia Fracture Zone sector of the Aleutian Trench: Marine Geology, v. 48, no. 1-2, p. 105-134, https://doi.org/10.1016/0025-3227(82)90132-3.","productDescription":"30 p.","startPage":"105","endPage":"134","costCenters":[],"links":[{"id":221697,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -183.5494359056866,\n              55.16267802553958\n            ],\n            [\n              -183.5494359056866,\n              52.52758290654043\n            ],\n            [\n              -160.0547683286029,\n              52.52758290654043\n            ],\n            [\n              -160.0547683286029,\n              55.16267802553958\n            ],\n            [\n              -183.5494359056866,\n              55.16267802553958\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"48","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8a56e4b08c986b317148","contributors":{"authors":[{"text":"Scholl, D.W.","contributorId":106461,"corporation":false,"usgs":true,"family":"Scholl","given":"D.W.","email":"","affiliations":[],"preferred":false,"id":362111,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vallier, T.L.","contributorId":69526,"corporation":false,"usgs":true,"family":"Vallier","given":"T.L.","affiliations":[],"preferred":false,"id":362110,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stevenson, A.J.","contributorId":27864,"corporation":false,"usgs":true,"family":"Stevenson","given":"A.J.","email":"","affiliations":[],"preferred":false,"id":362109,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011809,"text":"70011809 - 1982 - Submarine valleys in the northeastern Gulf of Alaska: Characteristics and probable origin","interactions":[],"lastModifiedDate":"2024-10-16T16:01:50.866852","indexId":"70011809","displayToPublicDate":"1982-06-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Submarine valleys in the northeastern Gulf of Alaska: Characteristics and probable origin","docAbstract":"<p><span>The continental shelf of the northeastern Gulf of Alaska Between Prince William Sound and Cross Sound is cut by at least eight major valleys. From west to east, these are Hinchinbrook Seavalley, Egg Island Trough, Kayak Trough, Bering Trough, Pamplona Troughs, Yakutat Valley, Alsek Valley and Yakobi Valley. Evidence common to most of these troughs or valleys indicating that the present morphology is due to glacial processes includes: (1) a pre-Holocene subbottom erosional surface incised into the underlying lithified strata of the shelf; (2) U-shaped cross sections, both at the sea floor and at the pre-Holocene erosional surface; (3) concave longitudinal sections, commonly shoaling at the seaward end; (4) till-like sediments collected from the walls or outer shelf adjacent to the troughs; and (5) seismic stratigraphy that can be correlated with bottom samples indicative of glacially derived strata.</span></p><p><span>Depressions with tens of meters of relief are present on the pre-Holocene subbottom erosional surface beneath most of these valleys. These depressions have been partially filled by a seaward-thinning wedge of Holocene glacial flour (clayey silt) that is filling the valleys and blanketing the inner shelf at rates as high as 15 mm/yr (based on&nbsp;<sup>210</sup>Pb measurements). Although glaciation played a dominant role in the modern morphology of these sea valleys, structural features, including structurally controlled topographic highs on the shelf (e.g. Tarr Bank, Kayak Island, Pamplona Spur and Fairweather Ground) influenced the flow directions of the glacial lobes.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(82)90070-6","usgsCitation":"Carlson, P.R., Bruns, T.R., Molnia, B.F., and Schwab, W., 1982, Submarine valleys in the northeastern Gulf of Alaska: Characteristics and probable origin: Marine Geology, v. 47, no. 3-4, p. 217-242, https://doi.org/10.1016/0025-3227(82)90070-6.","productDescription":"26 p.","startPage":"217","endPage":"242","costCenters":[{"id":36171,"text":"National Civil Applications Center","active":true,"usgs":true}],"links":[{"id":221064,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"northeastern Gulf of Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -146.67638035410144,\n              60.976930988760245\n            ],\n            [\n              -146.67638035410144,\n              52.62253667132154\n            ],\n            [\n              -130.93473329233763,\n              52.62253667132154\n            ],\n            [\n              -130.93473329233763,\n              60.976930988760245\n            ],\n            [\n              -146.67638035410144,\n              60.976930988760245\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"47","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9d3ae4b08c986b31d6ff","contributors":{"authors":[{"text":"Carlson, Paul R.","contributorId":81469,"corporation":false,"usgs":true,"family":"Carlson","given":"Paul","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362008,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bruns, Terry R.","contributorId":29420,"corporation":false,"usgs":true,"family":"Bruns","given":"Terry","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362007,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Molnia, Bruce F. 0000-0001-8102-6269","orcid":"https://orcid.org/0000-0001-8102-6269","contributorId":301013,"corporation":false,"usgs":true,"family":"Molnia","given":"Bruce","email":"","middleInitial":"F.","affiliations":[{"id":36171,"text":"National Civil Applications Center","active":true,"usgs":true}],"preferred":true,"id":362005,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schwab, W.C.","contributorId":69989,"corporation":false,"usgs":true,"family":"Schwab","given":"W.C.","email":"","affiliations":[],"preferred":false,"id":362006,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70208962,"text":"70208962 - 1982 - Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada ","interactions":[],"lastModifiedDate":"2020-03-09T13:22:00","indexId":"70208962","displayToPublicDate":"1982-03-09T13:10:01","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada ","docAbstract":"<p><span>The Roberts thrust is a major thrust in Nevada on which Ordovician to Devonian siliceous facies rocks were carried more than 80 km eastward over contemporaneous carbonate facies. For more than two decades, a mid-Paleozoic age for this structure has been widely accepted. The bases for dating the thrust are (1) the assumption that the Roberts thrust formed at the time of the Antler orogeny—a reliably dated mid-Paleozoic event, and (2) the concept of an overlapping assemblage consisting of sedimentary strata deposited on both the allochthon and autochthon. The first assumption is unproved, and the second relies on another assumption: that the overlap assemblage was not cut and telescoped by the Roberts thrust. In the years since a mid-Paleozoic age for the Roberts thrust became widely accepted, much new information on the stratigraphy and facies relations of Mississippian rocks in northern Nevada has accumulated. One interpretation of these new data suggests that in the Pinon Range, where a mid-Paleozoic age for the thrust was most convincingly displayed, the overlap assemblage actually may have been cut by a major thrust that juxtaposed contrasting facies of Mississippian rocks. If so, the principal evidence used to date the Roberts thrust is compromised, and the time has come for an agonizing reappraisal of all evidence bearing on the question. A mid-Paleozoic age can no longer be taken for granted, and a post-Paleozoic age cannot be ruled out.</span></p>","language":"English","publisher":"GSA","doi":"10.1130/0091-7613(1982)10<298:MAOTRT>2.0.CO;2","usgsCitation":"Ketner, K.B., and Smith, F.J., 1982, Mid-Paleozoic age of the Roberts thrust unsettled by new data from northern Nevada : Geology, v. 10, no. 6, p. 298-303, https://doi.org/10.1130/0091-7613(1982)10<298:MAOTRT>2.0.CO;2.","productDescription":"6 p.","startPage":"298","endPage":"303","costCenters":[],"links":[{"id":373016,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"Northern Nevada","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -116.52099609375,\n              39.317300373271024\n            ],\n            [\n              -113.99414062499999,\n              39.26628442213066\n            ],\n            [\n              -114.12597656249999,\n              42.01665183556825\n            ],\n            [\n              -117.48779296875,\n              42.00032514831621\n            ],\n            [\n              -117.72949218749999,\n              39.11301365149975\n            ],\n            [\n              -116.52099609375,\n              39.317300373271024\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"10","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ketner, Keith B.","contributorId":957,"corporation":false,"usgs":true,"family":"Ketner","given":"Keith","email":"","middleInitial":"B.","affiliations":[],"preferred":true,"id":784207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Fred J. Jr.","contributorId":30864,"corporation":false,"usgs":true,"family":"Smith","given":"Fred","suffix":"Jr.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":784208,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011802,"text":"70011802 - 1982 - Age determination of late Pleistocene marine transgression in western Alaska","interactions":[],"lastModifiedDate":"2024-10-16T15:49:36.594723","indexId":"70011802","displayToPublicDate":"1982-03-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Age determination of late Pleistocene marine transgression in western Alaska","docAbstract":"<p>Dating molluscs from sediments representing the Kotzebuan marine transgression in Alaska yields an average uranium-series age of 104,000 <span>± </span>22,000 yrs B.P. This and other selected Pleistocene marine deposits of western Alaska are tentatively correlated with radiometrically dated units of eastern Baffin Island, Arctic Canada.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(82)90147-5","usgsCitation":"Szabo, B.J., 1982, Age determination of late Pleistocene marine transgression in western Alaska: Marine Geology, v. 46, no. 1-2, p. M1-M8, https://doi.org/10.1016/0025-3227(82)90147-5.","productDescription":"8 p.","startPage":"M1","endPage":"M8","costCenters":[],"links":[{"id":220995,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"western Alaska","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              188.20764945303154,\n              72.48831967560417\n            ],\n            [\n              188.20764945303154,\n              59.41217547528831\n            ],\n            [\n              200.67139608434223,\n              59.41217547528831\n            ],\n            [\n              200.67139608434223,\n              72.48831967560417\n            ],\n            [\n              188.20764945303154,\n              72.48831967560417\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"46","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e8eae4b0c8380cd47f81","contributors":{"authors":[{"text":"Szabo, Barney J.","contributorId":6848,"corporation":false,"usgs":true,"family":"Szabo","given":"Barney","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":361989,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70208103,"text":"70208103 - 1982 - A late Pleistocene glacial chronology for the southern Brooks Range: Stratigraphic record and regional significance","interactions":[],"lastModifiedDate":"2020-01-27T14:52:38","indexId":"70208103","displayToPublicDate":"1982-01-27T14:44:37","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"A late Pleistocene glacial chronology for the southern Brooks Range: Stratigraphic record and regional significance","docAbstract":"<p>Radiocarbon dates from 11 measured sections in the Koyukuk region provide a chronology of the last Pleistocene glaciation. Glaciers were advancing strongly by 24,000 yr ago; they built moraines near the south flank of the Brooks Range, retreated briefly about 22,000 to 20,000 yr B.P., then readvanced at least one more time into their terminal zones. Glaciation was accompanied by alluviation of the Koyukuk and Kobuk drainage systems and by periglacial processes that resemble those taking place today farther north and at higher altitudes. Moraines near the south flank of the range were being revegetated by 13,500 yr B.P. A strong final readvance into end-moraine belts of some northern valleys occurred about 13,000 to 12,500 yr ago, and this event may be synchronous with less extensive glacier readvances in upper valleys of the Koyukuk region. Upper valleys were largely deglaciated by 11,800 yr B.P.</p><p>Dated Stratigraphic sections from the northern Alaska Range show similar ages for initiation and close of glaciation and also suggest a possible interstadial episode about 20,000 yr ago. Scanty records of fluctuations during ice wastage probably reflect the general scarcity of datable wood, peat, and organic soils between about 19,500 and 13,500 yr ago. The Brooks Range and Alaska Range chronologies closely approximate glacial successions determined else-where in eastern Beringia and in Siberia. Advance and retreat of glaciers throughout this region evidently were associated with widespread climatic changes that also controlled the late Wisconsin history of the Laurentide ice sheet.</p><p>The Itkillik II and late Itkillik phases of former usage are part of a single glaciation that was entirely separate from the preceding Itkillik I ice advance. For this reason, the local term \"Walker Lake Glaciation\" is here extended to the last major glaciation of the entire southern Brooks Range, and use of Itkillik phases should be discontinued. The term \"Itkillik Glaciation\" is hereby restricted to the next older ice advance, in accord with its original definition.</p><p>Cold and dry conditions during the last glaciation of eastern Beringia are indicated by (1) relatively small mountain glaciers, (2) slight (200-m) depression of glaciation limits below modern values, (3) periglacial features indicating severe frost action on slopes with little protective plant cover, (4) widespread accretion of eolian sand, (5) low pollen influx rates, (6) scarcity of radiocarbon-datable organic remains, and (7) general absence of carbonaceous paleosols. Plant growth may have been much more restricted than generally believed, with relatively low capacity to support grazing animals and human hunting bands.</p>","language":"English","publisher":"GSA","doi":"10.1130/0016-7606(1982)93<700:ALPGCF>2.0.CO;2","usgsCitation":"Hamilton, T.D., 1982, A late Pleistocene glacial chronology for the southern Brooks Range: Stratigraphic record and regional significance: GSA Bulletin, v. 93, no. 8, p. 700-716, https://doi.org/10.1130/0016-7606(1982)93<700:ALPGCF>2.0.CO;2.","productDescription":"17 p.","startPage":"700","endPage":"716","costCenters":[],"links":[{"id":371601,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Southern Brooks Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -156.796875,\n              66.51326044311185\n            ],\n            [\n              -148.88671874999997,\n              66.51326044311185\n            ],\n            [\n              -148.88671874999997,\n              68.65655498475735\n            ],\n            [\n              -156.796875,\n              68.65655498475735\n            ],\n            [\n              -156.796875,\n              66.51326044311185\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"93","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hamilton, T. D.","contributorId":36921,"corporation":false,"usgs":true,"family":"Hamilton","given":"T.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":780471,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70169161,"text":"70169161 - 1982 - Earthquakes, November-December 1981","interactions":[],"lastModifiedDate":"2016-03-24T16:22:31","indexId":"70169161","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Earthquakes, November-December 1981","docAbstract":"<p>The last 2 months of the year were somewhat active, seismically speaking, including three major earthquakes (7.0-7.9) during the month of December. The first of the major quakes was in the Aegean Sea on December 19, and the other two were in the South Pacific in the Kermadee Islands on December 24 and 26.</p>\n<p>Earthquake fatalities were experienced in Pakistan on December 12, and consdierable damage was reported in the eastern Caucasus.</p>\n<p>In the United States, a number of earthquakes were experienced, but no significant damage occurred.&nbsp;</p>","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Person, W., 1982, Earthquakes, November-December 1981: Earthquake Information Bulletin (USGS), v. 14, no. 3, p. 115-118.","productDescription":"4 p.","startPage":"115","endPage":"118","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319229,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be36e4b0f59b85e02e00","contributors":{"authors":[{"text":"Person, W. J.","contributorId":91472,"corporation":false,"usgs":true,"family":"Person","given":"W. J.","affiliations":[],"preferred":false,"id":623270,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70169269,"text":"70169269 - 1982 - Volcanic hazard alert issued for the Long Valley-Mono Lake area of California","interactions":[],"lastModifiedDate":"2016-04-07T15:58:46","indexId":"70169269","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Volcanic hazard alert issued for the Long Valley-Mono Lake area of California","docAbstract":"<p>The ski resort of Mammoth Lakes, nestled against the east front of the Sierra Nevada just east of Yosemite National Park, knows about natural hazards. It is still being shaken by an unusual sequence of earthquakes that started in 1978 and included four earthquakes of magnitude 6 within 48 hours of each other in May 1980. An earthquake hazard watch is still in effect.&nbsp;</p>","language":"English","publisher":"U.S Geological Survey","usgsCitation":"Kerr, R.A., 1982, Volcanic hazard alert issued for the Long Valley-Mono Lake area of California: Earthquake Information Bulletin (USGS), v. 14, no. 3, p. 84-93.","productDescription":"10 p.","startPage":"84","endPage":"93","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":319250,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -119.1412353515625,\n              38.39764411353181\n            ],\n            [\n              -119.31427001953125,\n              38.25974980039479\n            ],\n            [\n              -119.014892578125,\n              37.74031329210266\n            ],\n            [\n              -118.79241943359374,\n              37.590295170521955\n            ],\n            [\n              -118.6083984375,\n              37.38761749978395\n            ],\n            [\n              -118.40240478515624,\n              37.86618078529668\n            ],\n            [\n              -119.1412353515625,\n              38.39764411353181\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"14","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"56f3be56e4b0f59b85e02f62","contributors":{"authors":[{"text":"Kerr, R. A.","contributorId":152674,"corporation":false,"usgs":false,"family":"Kerr","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":623419,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1001580,"text":"1001580 - 1982 - Nocturnal activity and foraging of prairie raccoons (Procyon lotor) in North Dakota","interactions":[],"lastModifiedDate":"2023-02-15T16:08:23.583256","indexId":"1001580","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":737,"text":"American Midland Naturalist","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Nocturnal activity and foraging of prairie raccoons (<i>Procyon lotor</i>) in North Dakota","title":"Nocturnal activity and foraging of prairie raccoons (Procyon lotor) in North Dakota","docAbstract":"<p>Nocturnal activity and foraging of 39 radio-equipped raccoons (<i>Procyon lotor</i>) in eastern North Dakota were studied from April-July in 1974-1976. Sixteen of the raccoons were collected after foraging bouts for stomach content analysis. Raccoon activity consisted of running (13%), walking (49%) and local movement in confined areas (38%). Local movement was foraging on large or locally abundant food items. Adult males traveled farther in a night, ran twice as often, and moved locally only half as often as adult females and yearlings. Differences in activity patterns between adult females and yearlings were not detected. There was no difference among age-sex groups in use of foraging habitats. All raccoons foraged extensively in farmyards and wetlands. Stomach content analysis substantiated foraging determinations obtained by radiotelemetry. Principal foods were grain, aquatic animals, rodents, birds and bird eggs.</p>","language":"English","publisher":"University of Notre Dame","doi":"10.2307/2425374","usgsCitation":"Greenwood, R.J., 1982, Nocturnal activity and foraging of prairie raccoons (Procyon lotor) in North Dakota: American Midland Naturalist, v. 107, no. 2, p. 238-243, https://doi.org/10.2307/2425374.","productDescription":"6 p.","startPage":"238","endPage":"243","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133841,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North 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Dakota\",\"nation\":\"USA  \"}}]}","volume":"107","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db69711c","contributors":{"authors":[{"text":"Greenwood, Raymond J.","contributorId":174570,"corporation":false,"usgs":false,"family":"Greenwood","given":"Raymond","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":311295,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":10524,"text":"ofr82674 - 1982 - Sedimentology and stratigraphy of the Kanayut Conglomerate, central and western Brooks Range, Alaska: Report of 1981 field season","interactions":[],"lastModifiedDate":"2022-12-14T20:40:31.129842","indexId":"ofr82674","displayToPublicDate":"1982-01-01T00:00:00","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":"82-674","title":"Sedimentology and stratigraphy of the Kanayut Conglomerate, central and western Brooks Range, Alaska: Report of 1981 field season","docAbstract":"The Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate forms a major stratigraphic unit along the crest of the Brooks Range of northern Alaska. It crops out for an east-west distance of about 900 km and a north-south distance of about 65 km. The Kanayut is wholly allochthonous and has probably been transported northward on a series of thrust plates. \r\n\r\nThe Kanayut is as thick as 2,600 m in the east-central Brooks Range. It thins and fines to the south and west. The Kanayut forms the middle part of the allochthonous sequence of the Endicott Group, an Upper Devonian and Mississippian clastic sequence underlain by platform limestones of the Baird Group and overlain by platform limestone, carbonaceous shale, and black chert of the Lisburne Group. The Kanayut overlies the marine Upper Devonian Noatak Sandstone or, where it is missing, the marine Upper Devonian Hunt Fork Shale. It is overlain by the marine Mississippian Kayak Shale. The Kanayut Conglomerate forms the fluvial part of a large, coarse-grained delta that prograded to the southwest in Late Devonian time and retreated in Early Mississippian time. \r\n\r\nFour sections of the Kanayut Conglomerate in the central Brooks Range and five in the western Brooks Range were measured in 1981. The sections from the western Brooks Range document the presence of fluvial cycles in the Kanayut as far west as the shores of the Chukchi Sea. The Kanayut in this area is generally finer grained than it is in the central and eastern Brooks Range, having a maximum clast size of 3 cm. It is probably about 300 m thick. The upper and lower contacts of the Kanayut are gradational. The lower Kanayut contains calcareous, marine-influenced sandstone within channel deposits, and the upper Kanayut contains probable marine interdistributary-bay shale sequences. The members of the Kanayut Conglomerate cannot be differentiated in this region. \r\n\r\nIn the central Brooks Range, sections of the Kanayut Conglomerate at Siavlat Mountain and Kakivilak Creek are typically organized into fining-upward fluvial cycles. The maximum clast size is about 3 cm in this area. The Kanayut in this region is 200-500 m thick and can be divided into the Ear Peak, Shainin Lake, and Stuver Members. The upper contact of the Kanayut with the Kayak Shale is very gradational at Kakivilak Creek and very abrupt at Siavlat Mountain. \r\n\r\nPaleocurrents from fluvial strata of the Kanayut indicate sediment transport toward the west and south in both the western and central Brooks Range. The maximum clast size distribution generally indicates westward fining from the Shainin Lake region.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr82674","usgsCitation":"Nilsen, T.H., and Moore, T., 1982, Sedimentology and stratigraphy of the Kanayut Conglomerate, central and western Brooks Range, Alaska: Report of 1981 field season: U.S. Geological Survey Open-File Report 82-674, iii, 64 p., https://doi.org/10.3133/ofr82674.","productDescription":"iii, 64 p.","costCenters":[],"links":[{"id":410492,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_75645.htm","linkFileType":{"id":5,"text":"html"}},{"id":38371,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1982/0674/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":144269,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1982/0674/report-thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"central and western Brooks Range","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -142,\n              67.3333\n            ],\n            [\n              -163.5,\n              67.3333\n            ],\n            [\n              -163.5,\n              68.75\n            ],\n            [\n              -142,\n              68.75\n            ],\n            [\n              -142,\n              67.3333\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e2e4b07f02db5e4d4d","contributors":{"authors":[{"text":"Nilsen, T. H.","contributorId":93057,"corporation":false,"usgs":true,"family":"Nilsen","given":"T.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":161540,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moore, Thomas E. 0000-0002-0878-0457","orcid":"https://orcid.org/0000-0002-0878-0457","contributorId":85592,"corporation":false,"usgs":true,"family":"Moore","given":"Thomas E.","affiliations":[],"preferred":false,"id":161539,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011441,"text":"70011441 - 1982 - Bank stability and channel width adjustment, East Fork River, Wyoming","interactions":[],"lastModifiedDate":"2018-02-05T13:23:12","indexId":"70011441","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Bank stability and channel width adjustment, East Fork River, Wyoming","docAbstract":"<p><span>Frequent surveys of eight cross sections located in self-formed reaches of the East Fork River, Wyoming, during the 1974 snowmelt flood showed a close relation between channel morphology and scour and fill. Those cross sections narrower than the mean reach width filled at discharges less than bankfull and scoured at discharges greater than bankfull. Those cross sections wider than the mean reach width scoured at discharges less than bankfull and filled at discharges greater than bankfull. The accumulation and depletion of sand-sized bed material in a cross section was concentrated in the near-bank parts of the stream channel and thus significantly influenced bank stability and retreat. In those cross sections that scour at discharges greater than bankfull, the basal bank material is eroded and the banks become undercut and unstable. Conversely, in those cross sections that fill at discharges greater than bankfull, the basal bank material is covered by the accumulated sand-size material and is not eroded. Streambanks in these cross sections are moderately inclined and stable. A resurvey in the summer of 1980 of the cross sections located in straight reaches showed that those cross sections which scoured at discharges greater than bankfull had become 2–4 feet wider, whereas those cross sections which filled at discharges greater than bankfull were unchanged. Thus bank stability and to some extent the adjustment of stream channel width in the East Fork River study reach appears to be controlled by the processes of scour and fill.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR018i004p01184","usgsCitation":"Andrews, E., 1982, Bank stability and channel width adjustment, East Fork River, Wyoming: Water Resources Research, v. 18, no. 4, p. 1184-1192, https://doi.org/10.1029/WR018i004p01184.","productDescription":"9 p.","startPage":"1184","endPage":"1192","costCenters":[],"links":[{"id":221290,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wyoming","otherGeospatial":"East Fork River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -109,\n              42\n            ],\n            [\n              -111,\n              42\n            ],\n            [\n              -111,\n              43.5\n            ],\n            [\n              -109,\n              43.5\n            ],\n            [\n              -109,\n              42\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"18","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"5059efb6e4b0c8380cd4a3f5","contributors":{"authors":[{"text":"Andrews, E.D.","contributorId":13922,"corporation":false,"usgs":true,"family":"Andrews","given":"E.D.","email":"","affiliations":[],"preferred":false,"id":361102,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
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