{"pageNumber":"4950","pageRowStart":"123725","pageSize":"25","recordCount":165623,"records":[{"id":70195711,"text":"70195711 - 1981 - An overview of the National Wildlife Health Laboratory after 6 years","interactions":[],"lastModifiedDate":"2018-02-27T15:16:41","indexId":"70195711","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"An overview of the National Wildlife Health Laboratory after 6 years","docAbstract":"<p>No abstract available.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of the twenty-fourth annual meeting of the American Association of Veterinary Laboratory Diagnosticians","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Twenty-fourth annual meeting of the American Association of Veterinary Laboratory Diagnosticians","conferenceDate":"October 11-13, 1981","conferenceLocation":"St. Louis, MO","language":"English","publisher":"American Association of Veterinary Laboratory Diagnosticians","usgsCitation":"Siegfried, L.M., and Friend, M., 1981, An overview of the National Wildlife Health Laboratory after 6 years, <i>in</i> Proceedings of the twenty-fourth annual meeting of the American Association of Veterinary Laboratory Diagnosticians, St. Louis, MO, October 11-13, 1981, p. 51-60.","productDescription":"10 p.","startPage":"51","endPage":"60","costCenters":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"links":[{"id":352092,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Wisconsin","county":"Dane","city":"Madison","otherGeospatial":"National Wildlife Health Laboratory","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5aff44cee4b0da30c1bfdb32","contributors":{"authors":[{"text":"Siegfried, Lynne M.","contributorId":53732,"corporation":false,"usgs":true,"family":"Siegfried","given":"Lynne","email":"","middleInitial":"M.","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":false,"id":729761,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Friend, Milton 0000-0002-2882-3629","orcid":"https://orcid.org/0000-0002-2882-3629","contributorId":31332,"corporation":false,"usgs":true,"family":"Friend","given":"Milton","email":"","affiliations":[{"id":456,"text":"National Wildlife Health Center","active":true,"usgs":true}],"preferred":true,"id":729762,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011956,"text":"70011956 - 1981 - Munsell color value as related to organic carbon in Devonian shale of Appalachian basin","interactions":[{"subject":{"id":14211,"text":"ofr80660 - 1980 - Munsell color value as related to organic carbon in Devonian shale of the Appalachian Basin","indexId":"ofr80660","publicationYear":"1980","noYear":false,"title":"Munsell color value as related to organic carbon in Devonian shale of the Appalachian Basin"},"predicate":"SUPERSEDED_BY","object":{"id":70011956,"text":"70011956 - 1981 - Munsell color value as related to organic carbon in Devonian shale of Appalachian basin","indexId":"70011956","publicationYear":"1981","noYear":false,"title":"Munsell color value as related to organic carbon in Devonian shale of Appalachian basin"},"id":1}],"lastModifiedDate":"2023-01-11T17:37:46.037306","indexId":"70011956","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Munsell color value as related to organic carbon in Devonian shale of Appalachian basin","docAbstract":"<p><span>Comparison of Munsell color value with organic carbon content of 880 samples from 50 drill holes in the Appalachian basin shows that a power curve is the best fit for the data. A color value below 3 to 3.5 indicates the presence of organic carbon but is meaningless in determining the organic carbon content because a large increase in amount of organic carbon causes only a minor decrease in color value. Above 4, the color value is one of the factors that can be used in calculating the organic content. For samples containing equal amounts of organic carbon, calcareous shale containing more than 5% calcite is darker than shale containing less than 5% calcite.</span></p>","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/2F9197CE-16CE-11D7-8645000102C1865D","usgsCitation":"Hosterman, J.W., and Whitlow, S.I., 1981, Munsell color value as related to organic carbon in Devonian shale of Appalachian basin: American Association of Petroleum Geologists Bulletin, v. 65, no. 2, p. 333-335, https://doi.org/10.1306/2F9197CE-16CE-11D7-8645000102C1865D.","productDescription":"3 p.","startPage":"333","endPage":"335","costCenters":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"links":[{"id":221329,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"65","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a60d5e4b0c8380cd716d2","contributors":{"authors":[{"text":"Hosterman, John W.","contributorId":48962,"corporation":false,"usgs":true,"family":"Hosterman","given":"John","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":362384,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Whitlow, Sallie I.","contributorId":8854,"corporation":false,"usgs":true,"family":"Whitlow","given":"Sallie","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":362383,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011944,"text":"70011944 - 1981 - Cretaceous Arctic silicoflagellates","interactions":[],"lastModifiedDate":"2012-03-12T17:18:29","indexId":"70011944","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"Cretaceous Arctic silicoflagellates","docAbstract":"Cretaceous silicoflagellate assemblages from Arctic Ocean USGS Core 437 show Vallacerta siderea the most abundant species; most species of Lyramula disappear halfway up the core; only L. burchardae, n. sp., persists into the upper sections. These occurrences are untypical of the few documented Cretaceous assemblages from other areas. A Campanian or Maestrichtian age is suggested by correlation, but the uniquely high abundance of V. siderea and lack of Corbisema suggests that a difference in both age and general environment could be involved. If Core 437 is latest Maestrichtian, then the evidence from this core would constrain the timing of the ocean-freshening model for the Cretaceous-Tertiary boundary extinctions. ?? 1981 A.M. Dowden, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geo-Marine Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF02463303","issn":"02760460","usgsCitation":"Bukry, D., 1981, Cretaceous Arctic silicoflagellates: Geo-Marine Letters, v. 1, no. 1, p. 57-63, https://doi.org/10.1007/BF02463303.","startPage":"57","endPage":"63","numberOfPages":"7","costCenters":[],"links":[{"id":221143,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205092,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02463303"}],"volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fca5e4b0c8380cd4e36d","contributors":{"authors":[{"text":"Bukry, D.","contributorId":15338,"corporation":false,"usgs":true,"family":"Bukry","given":"D.","affiliations":[],"preferred":false,"id":362363,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70011960,"text":"70011960 - 1981 - Some regional costs of a synthetic fuel industry: The case of illinois","interactions":[],"lastModifiedDate":"2012-03-12T17:18:34","indexId":"70011960","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3543,"text":"The Annals of Regional Science","active":true,"publicationSubtype":{"id":10}},"title":"Some regional costs of a synthetic fuel industry: The case of illinois","docAbstract":"The Federal Government's efforts to induce development of a coal-based synthetic fuel industry include direct subsidies, tax concessions, and assurances that it will purchase the industry's output, even if above the market price. In this note it is argued that these subsidies will enable this industry to secure a region's largest and lowest-cost coal deposits and that the costs imposed on other coal users will be substantial. Moreover, because the lowest-cost coal deposits will be committed to synthetic fuels production regardless of the industry's commercial viability, distortions in regional coal markets will develop. If economic efficiency requires that the price of the resource reflect its replacement value, then a State government is justified in imposing a tax on coal destined for subsidized synthetic fuel plants. Amounts of such a tax, based on the higher costs of coal that must be accepted by other users as the result of the subsidized synthetic fuel plants' preempting the largest and lowest-cost deposits, are estimated for the case of Illinois strippable coal. ?? 1981 Annals of Regional Science.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"The Annals of Regional Science","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF01287303","issn":"05701864","usgsCitation":"Attanasi, E.D., and Green, E., 1981, Some regional costs of a synthetic fuel industry: The case of illinois: The Annals of Regional Science, v. 15, no. 1, p. 43-52, https://doi.org/10.1007/BF01287303.","startPage":"43","endPage":"52","numberOfPages":"10","costCenters":[],"links":[{"id":221400,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205119,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF01287303"}],"volume":"15","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b92e1e4b08c986b31a175","contributors":{"authors":[{"text":"Attanasi, E. D. 0000-0001-6845-7160","orcid":"https://orcid.org/0000-0001-6845-7160","contributorId":107672,"corporation":false,"usgs":true,"family":"Attanasi","given":"E.","middleInitial":"D.","affiliations":[],"preferred":false,"id":362393,"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":362392,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011930,"text":"70011930 - 1981 - Geological opportunities and constraints on the use of underground space","interactions":[],"lastModifiedDate":"2012-03-12T17:18:31","indexId":"70011930","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3667,"text":"Underground Space","active":true,"publicationSubtype":{"id":10}},"title":"Geological opportunities and constraints on the use of underground space","docAbstract":"[No abstract available]","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Underground Space","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"03620565","usgsCitation":"Walton, M., 1981, Geological opportunities and constraints on the use of underground space: Underground Space, v. 5, no. 5, p. 287-289.","startPage":"287","endPage":"289","numberOfPages":"3","costCenters":[],"links":[{"id":221003,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2279e4b0c8380cd57097","contributors":{"authors":[{"text":"Walton, M.S.","contributorId":63105,"corporation":false,"usgs":true,"family":"Walton","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":362322,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70011939,"text":"70011939 - 1981 - Aseismic uplift in California","interactions":[],"lastModifiedDate":"2017-03-15T17:11:08","indexId":"70011939","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Aseismic uplift in California","docAbstract":"<p>We disagree with several of the arguments cited by Jackson <i>et al</i>. in support of their view that \"the inference of wide-spread aseismic uplift in southern California is not justified\" (1). Specifically, the striking correlation shown in figure 1 of Jackson <i>et al</i>. (1) is an artifact of the construction, the rod calibration data are atypical, the cited regression techniques are of doubtful value, and the geologically and geodetically determined uplift rates are inappropriately compared.<br></p>","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.213.4504.246","issn":"00368075","usgsCitation":"Castle, R.O., Elliot, M.R., Gilmore, T.D., Mark, R., Newman, E.B., Tinsley, J., Jackson, D., Lee, W., and Liu, C., 1981, Aseismic uplift in California: Science, v. 213, no. 4504, p. 246-247, https://doi.org/10.1126/science.213.4504.246.","productDescription":"2 p.","startPage":"246","endPage":"247","costCenters":[],"links":[{"id":480570,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1126/science.213.4504.246","text":"Publisher Index Page"},{"id":221073,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"213","issue":"4504","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059edb7e4b0c8380cd4997d","contributors":{"authors":[{"text":"Castle, Robert O.","contributorId":22741,"corporation":false,"usgs":true,"family":"Castle","given":"Robert","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":362349,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Elliot, Michael R.","contributorId":189355,"corporation":false,"usgs":true,"family":"Elliot","given":"Michael","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362342,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gilmore, Thomas D.","contributorId":64235,"corporation":false,"usgs":true,"family":"Gilmore","given":"Thomas","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":362348,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mark, Robert K.","contributorId":30648,"corporation":false,"usgs":true,"family":"Mark","given":"Robert K.","affiliations":[],"preferred":false,"id":362344,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Newman, Evelyn B.","contributorId":59501,"corporation":false,"usgs":true,"family":"Newman","given":"Evelyn","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":362347,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Tinsley, John C. III jtinsley@usgs.gov","contributorId":3266,"corporation":false,"usgs":true,"family":"Tinsley","given":"John C.","suffix":"III","email":"jtinsley@usgs.gov","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":362345,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Jackson, D.D.","contributorId":41011,"corporation":false,"usgs":true,"family":"Jackson","given":"D.D.","email":"","affiliations":[],"preferred":false,"id":362346,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Lee, W.B.","contributorId":28364,"corporation":false,"usgs":true,"family":"Lee","given":"W.B.","email":"","affiliations":[],"preferred":false,"id":362343,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Liu, C.-C.","contributorId":89662,"corporation":false,"usgs":true,"family":"Liu","given":"C.-C.","affiliations":[],"preferred":false,"id":362350,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70012033,"text":"70012033 - 1981 - Morphology and processes associated with the accumulation of the fine-grained sediment deposit on the southern New England shelf","interactions":[],"lastModifiedDate":"2017-09-13T14:31:59","indexId":"70012033","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2450,"text":"Journal of Sedimentary Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Morphology and processes associated with the accumulation of the fine-grained sediment deposit on the southern New England shelf","docAbstract":"A 13,000 km<sup>2</sup> area of the southern New England Continental Shelf which is covered by anomalously fine-grained sediment has been surveyed by means of high-resolution, seismic-reflection and side-scan sonar techniques to map its morphology and structure, and a near-bottom instrument system contributed to understanding present activity of the deposit. Seismic-reflection profiles show that the fine-grained deposit, which is as much as 13 m thick, has accumulated during the last transgression because it rests on a reflector that is geomorphically similar to and continuous with the Holocene transgressive sand sheet still exposed on the shelf to the west. The ridge and swale topography comprising the sand sheet on the shelf off New Jersey and Long Island are relict in origin as these same features are found buried under the fine sediment deposit. Southwestward migrating megaripples observed on the sonographs in the eastern part of the deposit are evidence that sediment is still actively accumulating in this area. In the western part of the deposit, where surface sediment is composed of silt plus clay, evidence of present sediment mobility consists of changes in the near-bottom, suspended-matter concentrations primarily associated with storms. Nantucket Shoals and Georges Bank are thought to be the sources for the fine-textured sediment. Storms and strong tidal currents in these shoal areas may still erode available fine-grained material, which then is transported westward by the mean drift to the southern New England Shelf, where a comparatively tranquil environment permits deposition of the fine material.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Sedimentary Petrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/212F7C6B-2B24-11D7-8648000102C1865D","issn":"00224472","usgsCitation":"Twichell, D.C., McClennen, C.E., and Butman, B., 1981, Morphology and processes associated with the accumulation of the fine-grained sediment deposit on the southern New England shelf: Journal of Sedimentary Petrology, v. 51, no. 1, p. 269-280, https://doi.org/10.1306/212F7C6B-2B24-11D7-8648000102C1865D.","productDescription":"12 p.","startPage":"269","endPage":"280","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":222513,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -73.66333007812499,\n              39.93501296038254\n            ],\n            [\n              -69.85107421874999,\n              39.93501296038254\n            ],\n            [\n              -69.85107421874999,\n              41.6154423246811\n            ],\n            [\n              -73.66333007812499,\n              41.6154423246811\n            ],\n            [\n              -73.66333007812499,\n              39.93501296038254\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"51","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5e50e4b0c8380cd70955","contributors":{"authors":[{"text":"Twichell, David C.","contributorId":37730,"corporation":false,"usgs":true,"family":"Twichell","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":362573,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McClennen, Charles E.","contributorId":67891,"corporation":false,"usgs":true,"family":"McClennen","given":"Charles","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":362574,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Butman, Bradford 0000-0002-4174-2073 bbutman@usgs.gov","orcid":"https://orcid.org/0000-0002-4174-2073","contributorId":943,"corporation":false,"usgs":true,"family":"Butman","given":"Bradford","email":"bbutman@usgs.gov","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":362572,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011947,"text":"70011947 - 1981 - Upper Oligocene evaporites in basin fill of Sevier Desert region, western Utah","interactions":[],"lastModifiedDate":"2023-01-11T17:34:29.130525","indexId":"70011947","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Upper Oligocene evaporites in basin fill of Sevier Desert region, western Utah","docAbstract":"The basin fill beneath the Sevier Desert of western Utah contains evaporites that were deposited in a broad closed basin. All of the basin fill penetrated by the Gulf Oil 1 Gronning contains abundant volcanic detritus and its alteration products of Cenozoic age. Fission-track dating of tuffaceous sandstone yields ages of 26-28 m.y. Fossil pollen from mudstone in the evaporite-bearing strata includes forms no older than late Oligocene, in good agreement with the fission-track ages. Thus the age of evaporites is late Oligocene and younger. Anhydrite is present throughout approximately 900m of volcaniclastic rocks in the lower part of the section cut by the Gulf hole. Fossil pollen are indicative of an arid to semiarid flora.-from Authors","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/2F9197B5-16CE-11D7-8645000102C1865D","usgsCitation":"Lindsey, D.A., Glanzman, R.K., Naeser, C.W., and Nichols, D.J., 1981, Upper Oligocene evaporites in basin fill of Sevier Desert region, western Utah: American Association of Petroleum Geologists Bulletin, v. 65, no. 2, p. 251-260, https://doi.org/10.1306/2F9197B5-16CE-11D7-8645000102C1865D.","productDescription":"10 p.","startPage":"251","endPage":"260","numberOfPages":"10","costCenters":[],"links":[{"id":221205,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Sevier Desert region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -113.75,\n              40\n            ],\n            [\n              -113.75,\n              38\n            ],\n            [\n              -112,\n              38\n            ],\n            [\n              -112,\n              40\n            ],\n            [\n              -113.75,\n              40\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"65","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbd44e4b08c986b328f3d","contributors":{"authors":[{"text":"Lindsey, D. A.","contributorId":49814,"corporation":false,"usgs":true,"family":"Lindsey","given":"D.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362372,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Glanzman, Richard K.","contributorId":19550,"corporation":false,"usgs":true,"family":"Glanzman","given":"Richard","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":362369,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naeser, Charles W.","contributorId":76281,"corporation":false,"usgs":true,"family":"Naeser","given":"Charles","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":362370,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nichols, Douglas J.","contributorId":87184,"corporation":false,"usgs":true,"family":"Nichols","given":"Douglas","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":362371,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70012000,"text":"70012000 - 1981 - Correlation of natural gas content to iron species in the New Albany shale group","interactions":[],"lastModifiedDate":"2023-10-02T17:15:17.117744","indexId":"70012000","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1709,"text":"Fuel","active":true,"publicationSubtype":{"id":10}},"title":"Correlation of natural gas content to iron species in the New Albany shale group","docAbstract":"<p><span>Mössbauer parameters were obtained for four Illinois Basin shales and their corresponding &lt; 2μm clay fractions from wells drilled through the New Albany Shale Group in Henderson, Tazewell, and Effingham counties in Illinois and Christian County in Kentucky. Off-gas analysis indicated that the Illinois cores were in an area of low gas potential, while the Kentucky core was in an area of moderate-to-good potential. Iron-rich dolomite (ankerite) was found in the Kentucky core but not in the Illinois cores. In the Kentucky core, gas content could be correlated with the ankerite in the bulk sample, the Mössbauer M (2) species in the clay fraction, and a ferrous iron species in the clay fraction. The location of the greatest concentration of natural gas in the Kentucky core could be predicted by following the changes in percentage concentration of these iron species when plotted against the depth of burial of the core sample.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-2361(81)90228-3","issn":"00162361","usgsCitation":"Shiley, R., Cluff, R., Dickerson, D.R., Hinckley, C., Smith, G.V., Twardowska, H., and Saporoschenko, M., 1981, Correlation of natural gas content to iron species in the New Albany shale group: Fuel, v. 60, no. 8, p. 732-738, https://doi.org/10.1016/0016-2361(81)90228-3.","productDescription":"7 p.","startPage":"732","endPage":"738","costCenters":[],"links":[{"id":220944,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Illinois, Kentucky","county":"Christian County, Effingham County, Henderson County, Tazewell County","otherGeospatial":"New Albany Shale 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R.H.","contributorId":44282,"corporation":false,"usgs":true,"family":"Shiley","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":362482,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cluff, R.M.","contributorId":53948,"corporation":false,"usgs":true,"family":"Cluff","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":362484,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dickerson, D. R.","contributorId":66837,"corporation":false,"usgs":true,"family":"Dickerson","given":"D.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362485,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hinckley, C.C.","contributorId":50656,"corporation":false,"usgs":true,"family":"Hinckley","given":"C.C.","email":"","affiliations":[],"preferred":false,"id":362483,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, Gerard V.","contributorId":93629,"corporation":false,"usgs":true,"family":"Smith","given":"Gerard","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":362486,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Twardowska, H.","contributorId":98038,"corporation":false,"usgs":true,"family":"Twardowska","given":"H.","email":"","affiliations":[],"preferred":false,"id":362487,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Saporoschenko, Mykola","contributorId":31905,"corporation":false,"usgs":true,"family":"Saporoschenko","given":"Mykola","email":"","affiliations":[],"preferred":false,"id":362481,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":70011915,"text":"70011915 - 1981 - Chemical modifications accompanying blueschist facies metamorphism of Franciscan conglomerates, Diablo Range, California","interactions":[],"lastModifiedDate":"2013-01-21T09:39:52","indexId":"70011915","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Chemical modifications accompanying blueschist facies metamorphism of Franciscan conglomerates, Diablo Range, California","docAbstract":"As part of an investigation of blueschist-facies mineral parageneses in pebbles and matrix of some Franciscan metaconglomerates of the Diablo Range, California, textural and major-element chemical analyses were conducted on a number of igneous pebbles that comprise a range of rock types from granite and dacite to gabbro and basalt. Compositions of the igneous pebbles differ significantly from common igneous rocks, particularly with respect to Ca, K, Na, Si and H2O. The SiO2 and H2O contents are characteristically high and the K2O contents low. The CaO and Na2O contents may be relatively enriched or reduced in different pebbles. The igneous pebbles show little evidence of alteration prior to their incorporation into the Franciscan conglomerates, and the chemical modifications are considered to have been produced during metamorphism of the conglomerates to (lawsonite + albite + aragonite ?? jadeite)-bearing assemblages. The observed variations in the pebbles are shown to be functions of: (1) bulk chemistry; (2) the igneous mineral assemblage; (3) the stable metamorphic mineral assemblage; and (4) the composition of pore fluids in the conglomerates. The relative proportions of Mg and Fe in most of the pebbles apparently have been unaffected by the metamorphism, and these parameters, along with other textural and chemical factors, were used to determine the petrogenetic affinities of the igneous pebbles. The plutonic and most of the volcanic pebbles correspond to calc-alkaline rock series, whereas a few volcanic pebbles show apparent Fe-enrichment characteristic of tholeiitic rocks. A continental margin arc-batholith complex would be the best source for these igneous detrital assemblages. Conglomerates in local areas differ in igneous lithologies from conglomerates in other areas and probably differ somewhat in age, perhaps reflecting varying degrees of unroofing of such a complex during deposition of Franciscan sediments. ?? 1981.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(81)90103-0","issn":"00092541","usgsCitation":"Moore, D., Liou, J.G., and King, B., 1981, Chemical modifications accompanying blueschist facies metamorphism of Franciscan conglomerates, Diablo Range, California: Chemical Geology, v. 33, no. 1-4, p. 237-263, https://doi.org/10.1016/0009-2541(81)90103-0.","startPage":"237","endPage":"263","numberOfPages":"27","costCenters":[],"links":[{"id":220726,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266123,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(81)90103-0"}],"volume":"33","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f580e4b0c8380cd4c276","contributors":{"authors":[{"text":"Moore, Diane E. 0000-0002-8641-1075","orcid":"https://orcid.org/0000-0002-8641-1075","contributorId":106496,"corporation":false,"usgs":true,"family":"Moore","given":"Diane E.","affiliations":[],"preferred":false,"id":362278,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Liou, J. G.","contributorId":87687,"corporation":false,"usgs":false,"family":"Liou","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":362277,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"King, B.-S.","contributorId":54592,"corporation":false,"usgs":true,"family":"King","given":"B.-S.","email":"","affiliations":[],"preferred":false,"id":362276,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70011946,"text":"70011946 - 1981 - 13C 12C exchange between calcite and graphite: A possible thermometer in Grenville marbles","interactions":[],"lastModifiedDate":"2024-03-14T16:02:34.074509","indexId":"70011946","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"displayTitle":"<sup>13</sup>C <sup>12</sup>C exchange between calcite and graphite: A possible thermometer in Grenville marbles","title":"13C 12C exchange between calcite and graphite: A possible thermometer in Grenville marbles","docAbstract":"<p>The fractionation of<span>&nbsp;</span><sup>13</sup>C between calcite and graphite, Δ(Cc-Gr). is consistently small (2.6–4.8 permil) in 34 assemblages from upper amphibolite- and granulite-facies marbles of the Grenville Province. In 25 samples from the Adirondack Mountains, New York, it decreases regularly with increasing metamorphic temperature. The fractionations are independent of absolute δ<sup>13</sup>C values of calcite (−2.9 to +5.0). For<span>&nbsp;</span><i>T</i><span>&nbsp;</span>= 600–800°<i>C</i>, the Adirondack data are described by<span>&nbsp;</span><i>Δ</i>(<i>Cc</i>-<i>Gr</i>) = −0.00748<i>T</i><span>&nbsp;</span>(°<i>C</i>) + 8.68. This good correlation between Δ and<span>&nbsp;</span><i>T</i><span>&nbsp;</span>suggests that carbon isotope equilibrium was attained in these high-grade marbles and that the theoretical calculations of this fractionation by Bottinga are approximately 2 permil too large in this temperature range. Because of the relatively high temperature sensitivity suggested by these results and by Bottinga's calculations, and the pressure independence of isotope fractionation, Δ(Cc-Gr) may provide a very good thermometer for high-grade marbles.</p><p>Comparison of this field calibration for Δ(Cc-Gr) vs temperature with results from other terranes supports the utility of Δ(Cc-Gr) for geothermometry and suggests that graphite is much more sluggish to exchange than calcite, that exchange between calcite and graphite occurs at temperatures as low as 300°C, and that equilibrium may normally be attained only when peak metamorphic temperatures are greater than 500–600°C.</p><p>Because<span>&nbsp;</span><sup>13</sup>C exchange is an unavoidable metamorphic process at temperatures above 300°C, high values of δ<sup>13</sup>C(Gr) in moderate- to high-grade carbonate-bearing rocks do not provide a sufficient criterion to infer an abiogenic origin for the graphite.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(81)90249-0","issn":"00167037","usgsCitation":"Valley, J., and O’Neil, J.R., 1981, 13C 12C exchange between calcite and graphite: A possible thermometer in Grenville marbles: Geochimica et Cosmochimica Acta, v. 45, no. 3, p. 411-419, https://doi.org/10.1016/0016-7037(81)90249-0.","productDescription":"9 p.","startPage":"411","endPage":"419","numberOfPages":"9","costCenters":[],"links":[{"id":480581,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/2027.42/24452>","text":"External Repository"},{"id":221204,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"45","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e224e4b0c8380cd459ba","contributors":{"authors":[{"text":"Valley, J.W.","contributorId":28741,"corporation":false,"usgs":true,"family":"Valley","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":362367,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Neil, J. R.","contributorId":69633,"corporation":false,"usgs":true,"family":"O’Neil","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":362368,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012105,"text":"70012105 - 1981 - Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.","interactions":[],"lastModifiedDate":"2013-01-21T09:40:57","indexId":"70012105","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.","docAbstract":"Oneida Lake is a large shallow lake in central New York that is characterized by high algal productivity and concentrated deposits of freshwater manganese nodules. Budgets for Mn in the lake and its tributaries show a net loss of 23 metric tons of manganese within the lake per year with ???95% deposited in manganese nodules and the rest incorporated in the sediments. Erosion of nodules in the shallow well-oxygenated central part of the lake produces fragments of nodules as well as Mn-coated sand grains that are transported to adjacent deeper, more reducing parts of the lake where they sink into the anoxic sediments and MnO2 is reduced to Mn2+. This produces a high concentration of Mn2+ in the pore waters of these sediments and Mn2+ diffuses back into the water column. Growth of manganese nodules in Oneida Lake is characterized by periods of rapid accretion (> 1 mm 100 yr.) alternating with periods of no-growth or erosion. Rapid growth of nodules may be aided by the stripping of Mn from the water column by algae and bacteria. In addition, the high algal productivity of Oneida Lake produces a high-pH high-oxygen environment during the summer months that is maintained throughout the water column in the central part of the lake by almost continuous wind mixing. Thus, the cycle of Mn within the lake involves an interaction of the weather, the biota, the sediments, the nodules, and Mn dissolved in the lake and interstitial waters. ?? 1981.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(81)90071-1","issn":"00092541","usgsCitation":"Dean, W., Moore, W., and Nealson, K., 1981, Manganese cycles and the origin of manganese nodules, Oneida Lake, New York, U.S.A.: Chemical Geology, v. 34, no. 1-2, p. 53-64, https://doi.org/10.1016/0009-2541(81)90071-1.","startPage":"53","endPage":"64","numberOfPages":"12","costCenters":[],"links":[{"id":221928,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266124,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(81)90071-1"}],"volume":"34","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4cabe4b0c8380cd69e02","contributors":{"authors":[{"text":"Dean, W.E.","contributorId":97099,"corporation":false,"usgs":true,"family":"Dean","given":"W.E.","email":"","affiliations":[],"preferred":false,"id":362740,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moore, W.S.","contributorId":90875,"corporation":false,"usgs":true,"family":"Moore","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":362739,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nealson, K.H.","contributorId":38284,"corporation":false,"usgs":true,"family":"Nealson","given":"K.H.","email":"","affiliations":[],"preferred":false,"id":362738,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70012123,"text":"70012123 - 1981 - Annual and semiannual variations of the geomagnetic field at equatorial locations","interactions":[],"lastModifiedDate":"2013-02-23T13:24:36","indexId":"70012123","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2188,"text":"Journal of Atmospheric and Terrestrial Physics","active":true,"publicationSubtype":{"id":10}},"title":"Annual and semiannual variations of the geomagnetic field at equatorial locations","docAbstract":"For a year of quiet solar-activity level, geomagnetic records from American hemisphere observatories located between about 0?? and 30?? north geomagnetic latitude were used to compare the annual and semiannual variations of the geomagnetic field associated with three separate contributions: (a) the quiet-day midnight level, MDT; (b) the solar-quiet daily variation, Sq; (c) the quiet-time lunar semidiurnal tidal variation, L(12). Four Fourier spectral constituents (24, 12, 8, 6 h periods) of Sq were individually treated. All three orthogonal elements (H, D and Z) were included in the study. The MDT changes show a dominant semiannual variation having a range of about 7 gammas in H and a dominant annual variation in Z having a range of over 8 gammas. These changes seem to be a seasonal response to the nightside distortions by magnetospheric currents. There is a slow decrease in MDT amplitudes with increasing latitude. The Sq changes follow the patterns expected from an equatorial ionospheric dynamo electrojet current system. The dominant seasonal variations occur in H having a range of over 21 gammas for the 24 h period and over 12 gammas for the 12 h period spectral components. The higher-order components are relatively smaller in size. The Sq(H) amplitudes decrease rapidly with increasing latitude. Magnetospheric contributions to the equatorial Sq must be less than a few per cent of the observed magnitude. The L(12) variation shows the ionospheric electrojet features by the dominance of H and the rapid decrease in amplitude with latitude away from the equator. However, the seasonal variation range of over 7 gammas has a maximum in early February and minimum in late June that is not presently explainable by the known ionospheric conductivity and tidal behavior. ?? 1981.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Atmospheric and Terrestrial Physics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/0021-9169(81)90123-9","issn":"00219169","usgsCitation":"Campbell, W., 1981, Annual and semiannual variations of the geomagnetic field at equatorial locations: Journal of Atmospheric and Terrestrial Physics, v. 43, no. 5-6, p. 607-616, https://doi.org/10.1016/0021-9169(81)90123-9.","startPage":"607","endPage":"616","numberOfPages":"10","costCenters":[],"links":[{"id":268034,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0021-9169(81)90123-9"},{"id":222182,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"5-6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ec1ee4b0c8380cd490a9","contributors":{"authors":[{"text":"Campbell, W.H.","contributorId":30749,"corporation":false,"usgs":true,"family":"Campbell","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":362781,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70139922,"text":"70139922 - 1981 - Use of remote sensing for monitoring deforestation in tropical and subtropical latitudes","interactions":[],"lastModifiedDate":"2017-01-18T15:00:21","indexId":"70139922","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3863,"text":"Ciencia Interamericana","active":true,"publicationSubtype":{"id":10}},"title":"Use of remote sensing for monitoring deforestation in tropical and subtropical latitudes","docAbstract":"<p>Of the three types of remotely sensed data discussed here, Landsat data offers the greatest potential for monitoring broad changes in extensive tropical forest environments because of its low-cost, synoptic, repetitive coverage. Scientists from developing countries can choose from a variety of Landsat data classification techniques, thus enabling each country to satisfy limitations on available funding, trained personnel, and equipment.</p>\n<p>&nbsp;</p>\n<p>Factors limiting the application of Landsat data&mdash;including relatively low spatial resolution, persistent cloud cover in tropical regions, inadequate coverage of certain areas due to data-acquisition restraints and lack of local Landsat data receiving stations for real-time data recording&mdash;must be considered in any proposed study. Future improvements in Landsat capabilities might extend present applications beyond distinction of forest vs. non-forest cover, determination of gross vegetation or forest type, and generalized land use mapping.</p>","language":"English","publisher":"Organización de los Estados Americanos, Departamento de Asuntos Científicos y Tecnológicos","usgsCitation":"Talbot, J.J., and Pettinger, L.R., 1981, Use of remote sensing for monitoring deforestation in tropical and subtropical latitudes: Ciencia Interamericana, v. 21, no. 1-4, p. 63-71.","productDescription":"9 p.","startPage":"63","endPage":"71","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":298706,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"550aa1c1e4b02e76d7590c0d","contributors":{"authors":[{"text":"Talbot, J. J.","contributorId":21045,"corporation":false,"usgs":false,"family":"Talbot","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":539690,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pettinger, Lawrence R.","contributorId":18274,"corporation":false,"usgs":true,"family":"Pettinger","given":"Lawrence","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":539691,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70011948,"text":"70011948 - 1981 - Chemical composition, stratigraphy, and depositional environments of the Black River Group (Middle Ordovician), southwestern Ohio.","interactions":[],"lastModifiedDate":"2015-06-16T11:16:29","indexId":"70011948","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Chemical composition, stratigraphy, and depositional environments of the Black River Group (Middle Ordovician), southwestern Ohio.","docAbstract":"<p>The chemical composition and stratigraphy of the Black River Group in southwestern Ohio were studied. Chemical analyses were done on two cores of the Black River from Adams and Brown Counties, Ohio. These studies show that substantial reserves of high-carbonate rock are present in the Black River at depths of less than 800 ft, in proximity to Cincinnati and the Ohio River. Stratigraphic studies show that the Black River Group has eight marker beds in its middle and upper portions and three distinct lithologic units in its lower portion; these marker beds and units are present throughout southwestern Ohio. The Black River Group correlates well with the High Bridge Group of Kentucky. Depositional environments of the Black River are similar to those of the High Bridge and to present-day tidal flats in the Bahamas.-Author</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/0016-7606(1981)92<629:CCSADE>2.0.CO;2","usgsCitation":"Stith, D.A., 1981, Chemical composition, stratigraphy, and depositional environments of the Black River Group (Middle Ordovician), southwestern Ohio.: Geological Society of America Bulletin, v. 92, no. 9 pt 1, p. 629-633, https://doi.org/10.1130/0016-7606(1981)92<629:CCSADE>2.0.CO;2.","startPage":"629","endPage":"633","numberOfPages":"5","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":221206,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"92","issue":"9 pt 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f56de4b0c8380cd4c206","contributors":{"authors":[{"text":"Stith, David A.","contributorId":86418,"corporation":false,"usgs":true,"family":"Stith","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362373,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012015,"text":"70012015 - 1981 - Seismic amplitude anomalies associated with thick First Leo sandstone lenses, eastern Powder River basin, Wyoming","interactions":[],"lastModifiedDate":"2024-04-18T16:37:38.604821","indexId":"70012015","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Seismic amplitude anomalies associated with thick First Leo sandstone lenses, eastern Powder River basin, Wyoming","docAbstract":"<p><span>Several new discoveries of oil production in the Leo sandstone, an economic unit in the Pennsylvanian middle member of the Minnelusa formation, eastern Powder River basin, Wyoming-Nebraska-South Dakota, have renewed exploration interest in this area. Vertical seismic profiles (VSP) and model studies suggested that a measurable seismic amplitude anomaly is frequently associated with the thick First Leo sandstone lenses. To test this concept, a surface reflection seismic profile was run between two wells about 12 miles apart. The First Leo was present and productive in one well and thin and barren in the other. The surface profile shows the predicted amplitude anomaly at the well where a thick lens is known to exist. Two other First Leo amplitude anomalies also appear on the surface seismic profile between the two wells, which may indicate the presence of additional lenses.</span></p>","language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.1190/1.1441158","issn":"00168033","usgsCitation":"Balch, A.H., Lee, M.W., Miller, J.J., and Ryder, R.T., 1981, Seismic amplitude anomalies associated with thick First Leo sandstone lenses, eastern Powder River basin, Wyoming: Geophysics, v. 46, no. 11, p. 1519-1527, https://doi.org/10.1190/1.1441158.","productDescription":"9 p.","startPage":"1519","endPage":"1527","numberOfPages":"9","costCenters":[],"links":[{"id":222284,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8aece4b08c986b317475","contributors":{"authors":[{"text":"Balch, A. H.","contributorId":104892,"corporation":false,"usgs":true,"family":"Balch","given":"A.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":362522,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lee, Myung W.","contributorId":84358,"corporation":false,"usgs":true,"family":"Lee","given":"Myung","middleInitial":"W.","affiliations":[],"preferred":false,"id":362520,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Miller, J. J.","contributorId":54588,"corporation":false,"usgs":true,"family":"Miller","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":362519,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ryder, R. T.","contributorId":96673,"corporation":false,"usgs":true,"family":"Ryder","given":"R.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":362521,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70012034,"text":"70012034 - 1981 - A numerical inversion of the Laplace transform solution to radial dispersion in a porous medium","interactions":[],"lastModifiedDate":"2018-02-05T12:34:07","indexId":"70012034","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","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":"A numerical inversion of the Laplace transform solution to radial dispersion in a porous medium","docAbstract":"<p><span>A special form of the numerical inversion of the Laplace transform described by Stehfest (1970) is applied to the transformed solution of dispersion in a radial flow system in a porous medium. The inversion is extremely simple to use because the weighting coefficients depend only on the number of terms used in the computation and not upon the transform solution as required by most numerical inversion techniques. The result obtained by use of this approximate inversion of the radial dispersion problem reproduced the curves obtained previously by Hoopes and Harleman (1967) with a finite difference scheme.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR017i001p00250","usgsCitation":"Moench, A., and Ogata, A., 1981, A numerical inversion of the Laplace transform solution to radial dispersion in a porous medium: Water Resources Research, v. 17, no. 1, p. 250-252, https://doi.org/10.1029/WR017i001p00250.","productDescription":"3 p.","startPage":"250","endPage":"252","costCenters":[],"links":[{"id":222514,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"17","issue":"1","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"5059e4c8e4b0c8380cd46918","contributors":{"authors":[{"text":"Moench, A.F.","contributorId":91495,"corporation":false,"usgs":true,"family":"Moench","given":"A.F.","email":"","affiliations":[],"preferred":false,"id":362575,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ogata, A.","contributorId":94040,"corporation":false,"usgs":true,"family":"Ogata","given":"A.","email":"","affiliations":[],"preferred":false,"id":362576,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70012017,"text":"70012017 - 1981 - A five-collector system for the simultaneous measurement of argon isotope ratios in a static mass spectrometer","interactions":[],"lastModifiedDate":"2024-02-14T14:59:30.308453","indexId":"70012017","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2056,"text":"International Journal of Mass Spectrometry and Ion Physics","active":true,"publicationSubtype":{"id":10}},"title":"A five-collector system for the simultaneous measurement of argon isotope ratios in a static mass spectrometer","docAbstract":"<p>A system is described that utilizes five separate Faraday-cup collector assemblies, aligned along the focal plane of a mass spectrometer, to collect simultaneous argon ion beams at masses 36–40. Each collector has its own electrometer amplifier and analog-to-digital measuring channel, the outputs of which are processed by a minicomputer that also controls the mass spectrometer. The mass spectrometer utilizes a 90° sector magnetic analyzer with a radius of 23 cm, in which some degree of<span>&nbsp;</span><i>z</i>-direction focussing is provided for all the ion beams by the fringe field of the magnet.</p><p>Simultaneous measurement of the ion beams helps to eliminate mass-spectrometer memory as a significant source of measurement error during an analysis. Isotope ratios stabilize between 7 and 9 s after sample admission into the spectrometer, and thereafter changes in the measured ratios are linear, typically to within ±0.02%. Thus the multi-collector arrangement permits very short extrapolation times for computation of initial ratios, and also provides the advantages of simultaneous measurement of the ion currents in that errors due to variations in ion beam intensity are minimized. A complete analysis takes less than 10 min, so that sample throughput can be greatly enhanced. In this instrument, the factor limiting analytical precision now lies in short-term apparent variations in the interchannel calibration factors.</p>","language":"English","publisher":"Elsevier","doi":"10.1016/0020-7381(81)80031-9","issn":"00207381","usgsCitation":"Stacey, J.S., Sherrill, N., Dalrymple, G.B., Lanphere, M.A., and Carpenter, N., 1981, A five-collector system for the simultaneous measurement of argon isotope ratios in a static mass spectrometer: International Journal of Mass Spectrometry and Ion Physics, v. 39, no. 2, p. 167-180, https://doi.org/10.1016/0020-7381(81)80031-9.","productDescription":"14 p.","startPage":"167","endPage":"180","numberOfPages":"14","costCenters":[],"links":[{"id":222286,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e3dce4b0c8380cd46274","contributors":{"authors":[{"text":"Stacey, J. S.","contributorId":72785,"corporation":false,"usgs":true,"family":"Stacey","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":362529,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sherrill, N.D.","contributorId":100691,"corporation":false,"usgs":true,"family":"Sherrill","given":"N.D.","email":"","affiliations":[],"preferred":false,"id":362530,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dalrymple, G. B.","contributorId":10407,"corporation":false,"usgs":true,"family":"Dalrymple","given":"G.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":362526,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lanphere, M. A.","contributorId":35298,"corporation":false,"usgs":true,"family":"Lanphere","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362528,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Carpenter, N.V.","contributorId":32407,"corporation":false,"usgs":true,"family":"Carpenter","given":"N.V.","email":"","affiliations":[],"preferred":false,"id":362527,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70012027,"text":"70012027 - 1981 - Fluxes of metals to a manganese nodule: Radiochemical, chemical, structural, and mineralogical studies","interactions":[],"lastModifiedDate":"2023-12-12T23:23:58.832173","indexId":"70012027","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1427,"text":"Earth and Planetary Science Letters","active":true,"publicationSubtype":{"id":10}},"title":"Fluxes of metals to a manganese nodule: Radiochemical, chemical, structural, and mineralogical studies","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-serif text-s\"><div id=\"ab1\" class=\"abstract author\" lang=\"en\"><div id=\"aep-abstract-sec-id9\"><p>Fluxes of metals to the top and bottom surfaces of a manganese nodule were determined by combining radiochemical (<sup>230</sup>Th,<sup>231</sup>Pa,<sup>232</sup>Th,<sup>238</sup>U,<sup>234</sup>U) and detailed chemical data. The top of the nodule had been growing in its collected orientation at 4.7 mm Myr<sup>−1</sup><span>&nbsp;</span>for at least 0.5 Myr and accreting Mn at 200 μg cm<sup>−2</sup><span>&nbsp;</span>kyr<sup>−1</sup>. The bottom of the nodule had been growing in its collected orientation at about 12 mm Myr<sup>−1</sup><span>&nbsp;</span>for at least 0.3 Myr and accreting Mn at about 700 μg cm<sup>−2</sup><span>&nbsp;</span>yr<sup>−1</sup>. Although the top of the nodule was enriched in iron relative to the bottom, the nodule had been accreting Fe 50% faster on the bottom.<sup>232</sup>Th was also accumulating more rapidly in the bottom despite a 20-fold enrichment of<sup>230</sup>Th on the top.</p><p>The distribution of alpha-emitting nuclides calculated from detailed radiochemical measurements matched closely the pattern revealed by 109-day exposures of alpha-sensitive film to the nodule. However, the shape and slope of the total alpha profile with depth into the nodule was affected strongly by<sup>226</sup>Ra and<sup>222</sup>Rn migrations making the alpha-track technique alone an inadequate method of measuring nodule growth rates.</p><p>Diffusion of radium in the nodule may have been affected by diagenetic reactions which produce barite, phillipsite and todorokite within 1 mm of the nodule surface; however, our sampling interval was too broad to document the effect. We have not been able to resolve the importance of nodule diagenesis on the gross chemistry of the nodule.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/0012-821X(81)90217-X","issn":"0012821X","usgsCitation":"Moore, W., Ku, T., Macdougall, J., Burns, V., Burns, R., Dymond, J., Lyle, M., and Piper, D., 1981, Fluxes of metals to a manganese nodule: Radiochemical, chemical, structural, and mineralogical studies: Earth and Planetary Science Letters, v. 52, no. 1, p. 151-171, https://doi.org/10.1016/0012-821X(81)90217-X.","productDescription":"21 p.","startPage":"151","endPage":"171","numberOfPages":"21","costCenters":[],"links":[{"id":222452,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a12a8e4b0c8380cd543b7","contributors":{"authors":[{"text":"Moore, W.S.","contributorId":90875,"corporation":false,"usgs":true,"family":"Moore","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":362559,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ku, T.-L.","contributorId":75712,"corporation":false,"usgs":true,"family":"Ku","given":"T.-L.","email":"","affiliations":[],"preferred":false,"id":362557,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Macdougall, J.D.","contributorId":55282,"corporation":false,"usgs":true,"family":"Macdougall","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":362555,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burns, V.M.","contributorId":60382,"corporation":false,"usgs":true,"family":"Burns","given":"V.M.","email":"","affiliations":[],"preferred":false,"id":362556,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Burns, R.","contributorId":11886,"corporation":false,"usgs":true,"family":"Burns","given":"R.","affiliations":[],"preferred":false,"id":362553,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Dymond, J.","contributorId":98461,"corporation":false,"usgs":true,"family":"Dymond","given":"J.","email":"","affiliations":[],"preferred":false,"id":362560,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Lyle, M.W.","contributorId":82577,"corporation":false,"usgs":true,"family":"Lyle","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":362558,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Piper, D.Z.","contributorId":34154,"corporation":false,"usgs":false,"family":"Piper","given":"D.Z.","email":"","affiliations":[],"preferred":false,"id":362554,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70012021,"text":"70012021 - 1981 - Dating of Archean basement in northeastern Wyoming and southern Montana.","interactions":[],"lastModifiedDate":"2013-02-24T08:44:50","indexId":"70012021","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Dating of Archean basement in northeastern Wyoming and southern Montana.","docAbstract":"Rb-Sr whole-rock and U-Pb zircon ages of granite and gneiss cores from three deep drill holes extend known occurrences of Archean rocks in the subsurface of NE Wyoming and S Montanta. Rb-Sr and K- Ar mineral ages are discordant and reflect early or middle Proterozoic disturbance. Highly altered rocks occur in a thin zone immediately below the sub-Cambrian unconformity. Samples from a few metres deeper in the basement are much fresher but show the effects of this alteration in filled fractures and thin adjacent alteration haloes. Whole-rock Rb-Sr systems have retaioned a fair degree of integrity in spite of increased susceptibility to modification because of the disturbed mineral systems. Interaction of the rocks with water a few metres below the sub-Cambrian unconformity probably occurred for only a relatively short time. Fractures filled rapidly with secondary minerals such as chlorite, anhydrite, and carbonate to maintain a relatively impermeable crystalline basement in which the silicates and their contained isotopic systems were preserved.- Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geological Society of America Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1981)92<139:DOABIN>2.0.CO;2","usgsCitation":"Peterman, Z.E., 1981, Dating of Archean basement in northeastern Wyoming and southern Montana.: Geological Society of America Bulletin, v. 92, no. 3 pt 1, p. 139-146, https://doi.org/10.1130/0016-7606(1981)92<139:DOABIN>2.0.CO;2.","startPage":"139","endPage":"146","numberOfPages":"8","costCenters":[],"links":[{"id":222335,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":268108,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/0016-7606(1981)92<139:DOABIN>2.0.CO;2"}],"volume":"92","issue":"3 pt 1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fde1e4b0c8380cd4e9b3","contributors":{"authors":[{"text":"Peterman, Z. E.","contributorId":63781,"corporation":false,"usgs":true,"family":"Peterman","given":"Z.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":362537,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012022,"text":"70012022 - 1981 - Discrimination of a chestnut-oak forest unit for geologic mapping by means of a principal component enhancement of Landsat multispectral scanner data","interactions":[],"lastModifiedDate":"2024-02-15T01:09:32.738559","indexId":"70012022","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Discrimination of a chestnut-oak forest unit for geologic mapping by means of a principal component enhancement of Landsat multispectral scanner data","docAbstract":"<div class=\" metis-abstract\"><div class=\"article-section__content en main\"><p>A principal component image enhancement has been effective in applying Landsat data to geologic mapping in a heavily forested area of eastern Virginia. A chestnut-oak forest unit, which occurs on metavolcanic rocks and some metaclastic rocks in the western Piedmont and on highly weathered upland gravel deposits in the eastern Piedmont, can be discerned on a digitally enhanced Landsat winter image. The image enhancement procedure consists of a principal component transformation, a histogram normalization, and the inverse principal component transformation. The enhancement preserves the independence of the principal components, yet produces a more readily interpretable image than does a single principal component transformation.</p><p>To determine how the chestnut-oak forest unit was being enhanced, average Landsat multispectral scanner (MSS) values were extracted for four sample forest types and were calculated through the inverted principal component transformation. Slope and intercept values for the linear histogram normalization were chosen to keep the scale between the raw MSS bands and the inverted principal component (PC) bands constant. Plots of the inverted principal component data show that the most separation between forest types is in inverted PC band 5. The chestnut-oak forest unit is characterized by a high value for inverted PC band 5 as opposed to a low value for inverted PC band 4. In contrast, raw MSS band 4 is greater than MSS band 5 for the four forest types sampled in the winter image. Such observations cannot be readily deduced from analysis of only the principal component rotation matrix. They may ultimately provide a means to map the distribution of chestnut-oak forest from Landsat.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/GL008i002p00151","issn":"00948276","usgsCitation":"Krohn, M.D., Milton, N., Segal, D., and Enland, A., 1981, Discrimination of a chestnut-oak forest unit for geologic mapping by means of a principal component enhancement of Landsat multispectral scanner data: Geophysical Research Letters, v. 8, no. 2, p. 151-154, https://doi.org/10.1029/GL008i002p00151.","productDescription":"4 p.","startPage":"151","endPage":"154","numberOfPages":"4","costCenters":[],"links":[{"id":222336,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"8","issue":"2","noUsgsAuthors":false,"publicationDate":"2012-12-07","publicationStatus":"PW","scienceBaseUri":"505a01f9e4b0c8380cd4fe14","contributors":{"authors":[{"text":"Krohn, M. D.","contributorId":51250,"corporation":false,"usgs":true,"family":"Krohn","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":362540,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Milton, N.M.","contributorId":29415,"corporation":false,"usgs":true,"family":"Milton","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":362539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Segal, D.","contributorId":12199,"corporation":false,"usgs":true,"family":"Segal","given":"D.","affiliations":[],"preferred":false,"id":362538,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Enland, A.","contributorId":74142,"corporation":false,"usgs":true,"family":"Enland","given":"A.","email":"","affiliations":[],"preferred":false,"id":362541,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70012026,"text":"70012026 - 1981 - Geographic distribution and dispersal of normapolles genera in North America","interactions":[],"lastModifiedDate":"2013-03-20T15:51:22","indexId":"70012026","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3275,"text":"Review of Palaeobotany and Palynology","active":true,"publicationSubtype":{"id":10}},"title":"Geographic distribution and dispersal of normapolles genera in North America","docAbstract":"Normapolles pollen have been found in North America in Cretaceous and Lower Tertiary rocks from the eastern Atlantic Seaboard, the Mississippi embayment region and from the states and provinces from western North America as far north as the District of Mackenzie, Northwest Territories. Previous postulates relating to the Normapolles floral province (western Europe-eastern North America) were re-examined in the light of new finds of Normapolles genera in rocks from west of the Cretaceous epeiric seaway which separated the Normapolles province from the western North American Aquilapollenites province. A study of published occurrences of Normapolles genera and U.S. Geological Survey Denver Laboratory Normapolles records revealed that of the approximately 60 Normapolles genera recognized from western Europe, only 26 of these have been recognized from eastern North America. These data suggest that Normapolles-producing plants originated in western Europe and migrated to eastern North America prior to the opening of the north Atlantic seaway. Ten of these 26 genera also have been found in rocks from west of the Cretaceous epeiric seaway, suggesting that these genera were the only ones able to cross this barrier. At least six genera having Normapolles characteristics occur in eastern North America but have not yet been recorded from Europe. Two additional genera with Normapolles characteristics have been reported only from the Aquilapollenites province of western North America. Several discrepancies in the record need resolution, such as the latitudinal restriction of Thomsonipollis and Nudopollis to areas south 40??N latitude, the absence of records of Thomsonipollis east and north of central Georgia, and the absence of records of Kyandopollenites and Choanopollenites west of eastern Texas. These data show that the known boundaries of the Normapolles province are somewhat hazy and that firm conclusions regarding the geographic distribution and history of dispersal of Normapolles genera are premature. ?? 1981.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Review of Palaeobotany and Palynology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/0034-6667(81)90113-5","issn":"00346667","usgsCitation":"Tschudy, R., 1981, Geographic distribution and dispersal of normapolles genera in North America: Review of Palaeobotany and Palynology, v. 35, no. 2-4, p. 283-314, https://doi.org/10.1016/0034-6667(81)90113-5.","startPage":"283","endPage":"314","numberOfPages":"32","costCenters":[],"links":[{"id":269796,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0034-6667(81)90113-5"},{"id":222391,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"2-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a175de4b0c8380cd554a3","contributors":{"authors":[{"text":"Tschudy, R.H.","contributorId":55023,"corporation":false,"usgs":true,"family":"Tschudy","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":362552,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012104,"text":"70012104 - 1981 - Jasperoid float and stream cobbles as tools in geochemical exploration for hydrothermal ore deposits","interactions":[],"lastModifiedDate":"2025-04-09T16:24:26.983421","indexId":"70012104","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2302,"text":"Journal of Geochemical Exploration","active":true,"publicationSubtype":{"id":10}},"title":"Jasperoid float and stream cobbles as tools in geochemical exploration for hydrothermal ore deposits","docAbstract":"<p><span>Fragments of silicified rocks that are associated with deposits of base and precious metals may be transported as cobbles and pebbles in alluvium far downstream from the source outcrop. These rocks commonly exhibit certain characteristics which distinguish them from other detrital siliceous material, and may thus serve as a useful tool in reconnaissance geochemical exploration.</span></p><p><span>The predominant characteristics of jasperoid samples, classified according to genesis, type of host rock, and proximity to base and precious metal deposits have been tabulated from a large master file containing descriptive and analytical information on jasperoid samples representing more than a hundred areas in the United States.</span></p><p><span>Jasperoid that is genetically and spatially associated with ore deposits is generally dark gray or brown in color, brecciated, phaneritic, and vuggy. Jasperoids associated with lead and zinc deposits exhibit extensive halos of lead and silver anomalies, and more restricted zinc and gold anomalies. Those related to copper deposits show extensive copper, silver, and gold anomalies, and more restricted bismuth and molybdenum anomalies. Jasperoid related to gold deposits tends to exhibit extensive gold and silver anomalies and more restricted titanium, barium, vanadium, molybdenum, and rare-earth element anomalies.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/0375-6742(81)90104-7","usgsCitation":"Lovering, T., 1981, Jasperoid float and stream cobbles as tools in geochemical exploration for hydrothermal ore deposits: Journal of Geochemical Exploration, v. 14, p. 69-81, https://doi.org/10.1016/0375-6742(81)90104-7.","productDescription":"13 p.","startPage":"69","endPage":"81","costCenters":[],"links":[{"id":221868,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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,{"id":70011899,"text":"70011899 - 1981 - Preconsolidation stress of aquifer systems in areas of induced land subsidence","interactions":[],"lastModifiedDate":"2018-02-05T12:32:59","indexId":"70011899","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","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":"Preconsolidation stress of aquifer systems in areas of induced land subsidence","docAbstract":"<p><span>Aquifer systems in the Eloy-Picacho area, Arizona, the Houston-Galveston area, Texas, and the Tulare-Wasco area and Santa Clara Valley, California, appear to have been overconsolidated by an amount that ranged approximately from 1.6 to 6.2 bars (16 to 63 m of water) before man began to withdraw groundwater from them. The relation between land subsidence and water level decline in these areas, consists of two linear segments. In these areas, subsidence per unit water level decline was approximately constant until water levels had declined an amount that ranged from 16 to 63 m. When water levels declined past these values, subsidence per unit water level decline increased to larger constant values. Although slow drainage from aquitards may have contributed to this response, it is interpreted here to be caused primarily by natural overconsolidation of the compacting part of the aquifer system. The water level decline at which the ratio of subsidence to unit water level decline changed indicates approximately the amount by which the preconsolidation stress exceeded the overburden stress on the aquifer system that existed before groundwater withdrawals began.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR017i003p00693","usgsCitation":"Holzer, T.L., 1981, Preconsolidation stress of aquifer systems in areas of induced land subsidence: Water Resources Research, v. 17, no. 3, p. 693-704, https://doi.org/10.1029/WR017i003p00693.","productDescription":"12 p.","startPage":"693","endPage":"704","costCenters":[],"links":[{"id":221476,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, California, Texas","volume":"17","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a8147e4b0c8380cd7b447","contributors":{"authors":[{"text":"Holzer, Thomas L. tholzer@usgs.gov","contributorId":2829,"corporation":false,"usgs":true,"family":"Holzer","given":"Thomas","email":"tholzer@usgs.gov","middleInitial":"L.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":362244,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70012029,"text":"70012029 - 1981 - Sand waves on an epicontinental shelf: Northern Bering Sea","interactions":[],"lastModifiedDate":"2024-10-11T16:17:11.436108","indexId":"70012029","displayToPublicDate":"1981-01-01T00:00:00","publicationYear":"1981","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":"Sand waves on an epicontinental shelf: Northern Bering Sea","docAbstract":"<p><span>Sand waves and current ripples occupy the crests and flanks of a series of large linear sand ridges (20 km × 5 km × 10 m high) lying in an open-marine setting in the northern Bering Sea. The sand wave area, which lies west of Seward Peninsula and southeast of Bering Strait, is exposed to the strong continuous flow of coastal water northward toward Bering Strait. A hierarchy of three sizes of superimposed bedforms, all facing northward, was observed in successive cruises in 1976 and 1977. Large sand waves (height 2 m; spacing 200 m) have smaller sand waves (height 1 m; spacing 20 m) lying at a small oblique angle on their stoss slopes. The smaller sand waves in turn have linguoid ripples on their stoss slopes.</span></p><p><span>Repeated studies of the sand wave fields were made both years with high-resolution seismic-reflection profiles, side-scan sonographs, underwater photographs, current-meter stations, vibracores, and suspended-sediment samplers. Comparison of seismic and side-scan data collected along profile lines run both years showed changes in sand wave shape that indicate significant bedload transport within the year. Gouge marks made in sediment by keels of floating ice also showed significantly different patterns each year, further documenting modification to the bottom by sediment transport.</span></p><p><span>During calm sea conditions in 1977, underwater video and camera observations showed formation and active migration of linguoid and straight-crested current ripples. Current speeds 1 m above the bottom were between 20 and 30 cm/s. Maximum current velocities and sand wave migration apparently occur when strong southwesterly winds enhance the steady northerly flow of coastal water. Many cross-stratified sand bodies in the geologic record are interpreted as having formed in a tidal- or storm-dominated setting. This study provides an example of formation and migration of large bedforms by the interaction of storms with strong uniform coastal currents in an open-marine setting.</span></p>","language":"English","publisher":"Elsevier","doi":"10.1016/S0070-4571(08)70301-7","usgsCitation":"Field, M.E., Nelson, C.H., Cacchione, D.A., and Drake, D.E., 1981, Sand waves on an epicontinental shelf: Northern Bering Sea: Marine Geology, v. 32, p. 233-258, https://doi.org/10.1016/S0070-4571(08)70301-7.","productDescription":"26 p.","startPage":"233","endPage":"258","numberOfPages":"26","costCenters":[],"links":[{"id":222454,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b869fe4b08c986b316043","contributors":{"authors":[{"text":"Field, Michael E. mfield@usgs.gov","contributorId":2101,"corporation":false,"usgs":true,"family":"Field","given":"Michael","email":"mfield@usgs.gov","middleInitial":"E.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":362562,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nelson, C. Hans","contributorId":34909,"corporation":false,"usgs":true,"family":"Nelson","given":"C.","email":"","middleInitial":"Hans","affiliations":[],"preferred":false,"id":362565,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cacchione, David A.","contributorId":37327,"corporation":false,"usgs":true,"family":"Cacchione","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":362564,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Drake, David E.","contributorId":74752,"corporation":false,"usgs":true,"family":"Drake","given":"David","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":362563,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
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