In 1971, an outbreak of a hemorrhagic disease occurred in captive and free-ranging white-tailed deer (Odocoileus virginianus) in Mammoth Cave National Park, Kentucky. Clinical signs and gross pathological lesions were consistent with those of epizootic hemorrhagic disease and bluetongue, as were serological and histopathological findings for samples sent to other laboratories. The infection rate among the 104 captive deer was 88-92%, and that among the free-ranging Park deer appeared to be similar. Mortality was negligible in the Park deer, but 65 (62%) of the captive deer died. The deaths were bimodally distributed over a 36-day period, and the mortality rate decreased from 97-100% for deer clinically ill during the first 17 days of the outbreak to 58% for deer first exhibiting clinical signs on day 16 or later. Mortality was equal in males and females, but less in yearlings than among fawns or adults. Winter mortality among survivors of the initial outbreak was associated with low ambient temperatures and sometimes fungal and bacterial abscesses, possibly sequelae or complications of the hemorrhagic disease. The pregnancy and birth rates among surviving does appeared to be normal.
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\"}}]}","volume":"11","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Roughton, Robert D.","contributorId":224644,"corporation":false,"usgs":false,"family":"Roughton","given":"Robert","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":788920,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70234308,"text":"70234308 - 1975 - Prediction of maximum earthquake intensities for the San Francisco Bay region","interactions":[],"lastModifiedDate":"2022-08-08T16:12:24.125086","indexId":"70234308","displayToPublicDate":"1975-12-31T11:00:16","publicationYear":"1975","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Prediction of maximum earthquake intensities for the San Francisco Bay region","docAbstract":"No abstract available.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of U.S. national conference on earthquake engineering 1975, Ann Arbor, Michigan, June 18--20, 1975","largerWorkSubtype":{"id":12,"text":"Conference publication"},"usgsCitation":"Borcherdt, R.D., 1975, Prediction of maximum earthquake intensities for the San Francisco Bay region, in Proceedings of U.S. national conference on earthquake engineering 1975, Ann Arbor, Michigan, June 18--20, 1975, p. 123-127.","productDescription":"5 p.","startPage":"123","endPage":"127","costCenters":[{"id":234,"text":"Earthquake Hazards Program","active":true,"usgs":true}],"links":[{"id":404921,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -123.1622314453125,\n 36.778492404594154\n ],\n [\n -120.860595703125,\n 36.778492404594154\n ],\n [\n -120.860595703125,\n 38.436379603\n ],\n [\n -123.1622314453125,\n 38.436379603\n ],\n [\n -123.1622314453125,\n 36.778492404594154\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Borcherdt, Roger D. 0000-0002-8668-0849 borcherdt@usgs.gov","orcid":"https://orcid.org/0000-0002-8668-0849","contributorId":2373,"corporation":false,"usgs":true,"family":"Borcherdt","given":"Roger","email":"borcherdt@usgs.gov","middleInitial":"D.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":848524,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70206726,"text":"70206726 - 1975 - The vourinos ophiolite, Greece: Cyclic units of lineated cumulates overlying harzburgite tectonite","interactions":[],"lastModifiedDate":"2019-11-19T07:33:46","indexId":"70206726","displayToPublicDate":"1975-12-31T07:33:26","publicationYear":"1975","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":"The vourinos ophiolite, Greece: Cyclic units of lineated cumulates overlying harzburgite tectonite","docAbstract":"Re-examination of the Vourinos ophiolite shows it to be composed of metamorphic tectonites, cumulates, plagiogranites, dikes, and lava. The contact between the tectonites and the cumulates is exposed and sharp. Beneath the cumulate contact, the rocks have been highly deformed and complexly folded; above that contact, they simply have been tilted vertically to expose a stratiform complex 1,500 m (4,800 ft) thick. The stratiform intrusion is characterized by cyclic units, rich in olivine at the base, and rich in feldspar at the top. Some cumulus diorites are present at the top of the section which grade into quartz diorites (plagiogranites) with hypautomorphic textures. Lineate lamination characterizes the cumulates and may indicate the direction or orientation of the Mesozoic mid-oceanic ridge crest with respect to the present position of the complex. A siliceous dike swarm cuts the upper part of the stratiform complex. The section suggests that in the case of Vourinos, a large magmatic chamber formed at a mid-oceanic ridge crest and that intrusion was a much more important process than extrusion in the formation of oceanic crust in that area. The reported presence of cumulates in many other ophiolite complexes suggests that these relations may obtain generally at most or all spreading ridges. The contact between the tectonites and the cumulates of the complex would not have corresponded with seismic M. © 1975 Geological Society of America.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1975)86<390:TVOGCU>2.0.CO;2","issn":"00167606","usgsCitation":"Jackson, E.D., Greene, H., and Moores, E., 1975, The vourinos ophiolite, Greece: Cyclic units of lineated cumulates overlying harzburgite tectonite: Geological Society of America Bulletin, v. 86, no. 3, p. 390-398, https://doi.org/10.1130/0016-7606(1975)86<390:TVOGCU>2.0.CO;2.","productDescription":"9 p. ","startPage":"390","endPage":"398","costCenters":[],"links":[{"id":369310,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"86","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Jackson, E. D.","contributorId":120010,"corporation":false,"usgs":true,"family":"Jackson","given":"E.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":775560,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Greene, H.W.","contributorId":89638,"corporation":false,"usgs":true,"family":"Greene","given":"H.W.","email":"","affiliations":[],"preferred":false,"id":775561,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Moores, E.M.","contributorId":78452,"corporation":false,"usgs":true,"family":"Moores","given":"E.M.","email":"","affiliations":[],"preferred":false,"id":775562,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70186560,"text":"70186560 - 1975 - Radiometric age map of southeast Alaska","interactions":[],"lastModifiedDate":"2017-06-07T16:26:42","indexId":"70186560","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5403,"text":"Alaska Division of Geological & Geophysical Surveys Open File Report","active":false,"publicationSubtype":{"id":2}},"title":"Radiometric age map of southeast Alaska","docAbstract":"This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.
The map is divided into five sections, based on 1:1,000,000 scale enlargements of the National Atlas maps of Alaska. Within each section (e.g., southeastern Alaska), radiometric dates are plotted and keyed to 1:250,000 scale quadrangles. Accompanying each map section is table 1, listing map numbers and the sample identification numbers used in DGGS Special Report 10: Radiometric Dates from Alaska-A 1975 Compilation”. The reader is referred to Special Report 10 for more complete information on location, rock type, dating method, and literature references for each age entry. A listing of dates in Special Report lo which require correction or deletion is included S table 2. Corrected and additional entries are listed in table 3. The listings in tables 2 and 3 follow the format of Special Report 10. Table 4 is a glossary of abbreviations used for quadrangle name, rock type, mineral dated, and type of dating method used.
","language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","doi":"10.14509/178","usgsCitation":"Wilson, F.H., and Turner, D.L., 1975, Radiometric age map of southeast Alaska: Alaska Division of Geological & Geophysical Surveys Open File Report, Map: 26.42 x 38.17 inches, https://doi.org/10.14509/178.","productDescription":"Map: 26.42 x 38.17 inches","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480631,"rank":7,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14509/178","text":"Publisher Index Page"},{"id":341677,"rank":6,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187736","text":"Radiometric dates from Alaska: A 1975 compilation"},{"id":341676,"rank":5,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187735","text":"Radiometric age map of northern Alaska"},{"id":341675,"rank":4,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187732","text":"Radiometric age map of southcentral Alaska"},{"id":341673,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187729","text":"Radiometric age map of Aleutian Islands"},{"id":341674,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187731","text":"Radiometric age map of southwest Alaska"},{"id":339228,"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 \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -130,\n 53\n ],\n [\n -129,\n 61\n ],\n [\n -140,\n 61\n ],\n [\n -139,\n 53\n ],\n [\n -130,\n 53\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58e60287e4b09da6799ac701","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":689580,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, D. L.","contributorId":53776,"corporation":false,"usgs":true,"family":"Turner","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":689581,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187731,"text":"70187731 - 1975 - Radiometric age map of southwest Alaska","interactions":[],"lastModifiedDate":"2017-06-07T16:50:29","indexId":"70187731","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5403,"text":"Alaska Division of Geological & Geophysical Surveys Open File Report","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"DGGS AOF 84","title":"Radiometric age map of southwest Alaska","docAbstract":"This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.
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","language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","publisherLocation":"Fairbanks, AK","doi":"10.14509/180","usgsCitation":"Wilson, F.H., and Turner, D.L., 1975, Radiometric age map of southwest Alaska: Alaska Division of Geological & Geophysical Surveys Open File Report DGGS AOF 84, Map: 50.17 x 36.00 inches, https://doi.org/10.14509/180.","productDescription":"Map: 50.17 x 36.00 inches","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480630,"rank":7,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14509/180","text":"Publisher Index Page"},{"id":341358,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341690,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187729","text":"Radiometric age map of Aleutian Islands"},{"id":341689,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70186560","text":"Radiometric age map of southeast Alaska"},{"id":341693,"rank":6,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187736","text":"Radiometric dates from Alaska: A 1975 compilation"},{"id":341692,"rank":5,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187735","text":"Radiometric age map of northern Alaska"},{"id":341691,"rank":4,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187732","text":"Radiometric age map of southcentral Alaska"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -175,\n 65\n ],\n [\n -152,\n 65\n ],\n [\n -152,\n 57\n ],\n [\n -175,\n 57\n ],\n [\n -175,\n 65\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fd8e4b0a7fdb43ddf2a","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":695359,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, D. L.","contributorId":53776,"corporation":false,"usgs":true,"family":"Turner","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":695360,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187735,"text":"70187735 - 1975 - Radiometric age map of northern Alaska","interactions":[],"lastModifiedDate":"2017-06-07T16:50:59","indexId":"70187735","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5403,"text":"Alaska Division of Geological & Geophysical Surveys Open File Report","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"DGGS AOF 86","title":"Radiometric age map of northern Alaska","docAbstract":"This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.
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","language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","publisherLocation":"Fairbanks, AK","doi":"10.14509/182","usgsCitation":"Wilson, F.H., and Turner, D.L., 1975, Radiometric age map of northern Alaska: Alaska Division of Geological & Geophysical Surveys Open File Report DGGS AOF 86, Map: 53.40 x 36.00 inches, https://doi.org/10.14509/182.","productDescription":"Map: 53.40 x 36.00 inches","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480632,"rank":7,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14509/182","text":"Publisher Index Page"},{"id":341366,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341706,"rank":6,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187736","text":"Radiometric dates from Alaska: A 1975 compilation"},{"id":341705,"rank":5,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187732","text":"Radiometric age map of southcentral Alaska"},{"id":341704,"rank":4,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187731","text":"Radiometric age map of southwest Alaska"},{"id":341703,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187729","text":"Radiometric age map of Aleutian Islands"},{"id":341702,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70186560","text":"Radiometric age map of southeast Alaska"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -169,\n 64\n ],\n [\n -141,\n 64\n ],\n [\n -138,\n 72\n ],\n [\n -172,\n 72\n ],\n [\n -169,\n 64\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fd8e4b0a7fdb43ddf26","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":695377,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, D. L.","contributorId":53776,"corporation":false,"usgs":true,"family":"Turner","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":695378,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187736,"text":"70187736 - 1975 - Radiometric dates from Alaska: A 1975 compilation","interactions":[],"lastModifiedDate":"2025-09-24T16:06:37.555728","indexId":"70187736","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5405,"text":"Alaska Division of Geological & Geophysical Surveys Special Report","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"DGGS SR 10","title":"Radiometric dates from Alaska: A 1975 compilation","docAbstract":"The following table of radiometric dates from Alaska includes published material through 1972 as well as some selected later data. The table includes 726 mineral and whole-rock dates determined by the K-Ar, Rb-Sr, fission-track U-Pb, and Pb-alpha techniques.
The data are organized in alphabetical order of the 1:250,000 scale quadrangles in which the dated rocks are located. The latitude and longitude of each sample are given. In addition, each sample is located on a 1:250,000 quadrangle map by a grid system. The initial point of the grid is taken as the southwest corner of the quadrangle and the location of the sample is measured in inches east and inches north from that corner, e.g., \"156E 126N\" indicated 15.6 inches east and 12.6 inches north of the southwest corner of the quadrangle. Zeroes in the location columns for some dates indicate that accurate locations are not available.
Rock type, dating method, mineral dated, radiometric age, sample identification number, and reference are also listed where possible. Short comments, mostly geographic locality names, are given for some dates. These comments have been taken from the original references.
Sample identification numbers beginning with \"AA\" or \"BB\" have been assigned arbitrarily in cases where sample numbers were not assigned in the original references. Abbreviations are explained in the appendix at the end of table 1.
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Some dates are not plotted because of inadequate location data in the original references.
The map is divided into five sections, based on 1:1,000,000 scale enlargements of the National Atlas maps of Alaska. Within each section (e.g., southeastern Alaska), radiometric dates are plotted and keyed to 1:250,000 scale quadrangles. Accompanying each map section is table 1, listing map numbers and the sample identification numbers used in DGGS Special Report 10: Radiometric Dates from Alaska-A 1975 Compilation”. The reader is referred to Special Report 10 for more complete information on location, rock type, dating method, and literature references for each age entry. A listing of dates in Special Report lo which require correction or deletion is included S table 2. Corrected and additional entries are listed in table 3. The listings in tables 2 and 3 follow the format of Special Report 10. Table 4 is a glossary of abbreviations used for quadrangle name, rock type, mineral dated, and type of dating method used.
","language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","publisherLocation":"Fairbanks, AK","doi":"10.14509/179","usgsCitation":"Wilson, F.H., and Turner, D.L., 1975, Radiometric age map of Aleutian Islands: Alaska Division of Geological & Geophysical Surveys Open File Report DGGS AOF 83, Map: 53.16 x 36.00 inches, https://doi.org/10.14509/179.","productDescription":"Map: 53.16 x 36.00 inches","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480636,"rank":7,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14509/179","text":"Publisher Index Page"},{"id":341685,"rank":6,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187736","text":"Radiometric dates from Alaska: A 1975 compilation"},{"id":341684,"rank":5,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187735","text":"Radiometric age map of northern Alaska"},{"id":341683,"rank":4,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187732","text":"Radiometric age map of southcentral Alaska"},{"id":341682,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187731","text":"Radiometric age map of southwest Alaska"},{"id":341681,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70186560","text":"Radiometric age map of southeast Alaska"},{"id":341355,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Aleutian Islands","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 -188.701171875,\n 52.5897007687178\n ],\n [\n -185.9765625,\n 50.680797145321655\n ],\n [\n -181.23046875,\n 49.61070993807422\n ],\n [\n -165.146484375,\n 52.3755991766591\n ],\n [\n -161.103515625,\n 53.48804553605622\n ],\n [\n -157.763671875,\n 54.77534585936447\n ],\n [\n -155.21484375,\n 55.825973254619015\n ],\n [\n -150.64453125,\n 57.51582286553883\n ],\n [\n -151.30371093749997,\n 58.95000823335702\n ],\n [\n -153.72070312499997,\n 59.689926220143356\n ],\n [\n -157.32421875,\n 58.90464570302001\n ],\n [\n -158.90625,\n 58.49369382056807\n ],\n [\n -163.65234374999997,\n 56.75272287205736\n ],\n [\n -166.2890625,\n 55.57834467218206\n ],\n [\n -170.068359375,\n 54.316523240258256\n ],\n [\n -174.0234375,\n 53.85252660044951\n ],\n [\n -179.736328125,\n 53.12040528310657\n ],\n [\n -185.537109375,\n 53.38332836757156\n ],\n [\n -187.294921875,\n 53.80065082633023\n ],\n [\n -188.349609375,\n 53.592504809039376\n ],\n [\n -188.701171875,\n 52.5897007687178\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fd8e4b0a7fdb43ddf2c","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":695348,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, D. L.","contributorId":53776,"corporation":false,"usgs":true,"family":"Turner","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":695349,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70197785,"text":"70197785 - 1975 - Effect of geologic structure and metamorphic fluids on seismic behavior of the San Andreas fault system in central and northern California","interactions":[],"lastModifiedDate":"2018-09-18T11:16:07","indexId":"70197785","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Effect of geologic structure and metamorphic fluids on seismic behavior of the San Andreas fault system in central and northern California","docAbstract":"No abstract available.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1975)3<713:EOGSAM>2.0.CO;2","usgsCitation":"Irwin, W., and Barnes, I., 1975, Effect of geologic structure and metamorphic fluids on seismic behavior of the San Andreas fault system in central and northern California: Geology, v. 3, no. 12, p. 713-716, https://doi.org/10.1130/0091-7613(1975)3<713:EOGSAM>2.0.CO;2.","productDescription":"4 p.","startPage":"713","endPage":"716","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":355196,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Andreas fault system","volume":"3","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Irwin, William P.","contributorId":12889,"corporation":false,"usgs":true,"family":"Irwin","given":"William P.","affiliations":[],"preferred":false,"id":738486,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barnes, Ivan","contributorId":56619,"corporation":false,"usgs":true,"family":"Barnes","given":"Ivan","email":"","affiliations":[],"preferred":false,"id":738487,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187732,"text":"70187732 - 1975 - Radiometric age map of southcentral Alaska","interactions":[],"lastModifiedDate":"2017-06-07T16:50:42","indexId":"70187732","displayToPublicDate":"1975-12-31T00:00:00","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5403,"text":"Alaska Division of Geological & Geophysical Surveys Open File Report","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"DGGS AOF 85","title":"Radiometric age map of southcentral Alaska","docAbstract":"This map includes published, thesis, and open-file radiometric data available to us as of June, 1975. Some dates are not plotted because of inadequate location data in the original references.
The map is divided into five sections, based on 1:1,000,000 scale enlargements of the National Atlas maps of Alaska. Within each section (e.g., southeastern Alaska), radiometric dates are plotted and keyed to 1:250,000 scale quadrangles. Accompanying each map section is table 1, listing map numbers and the sample identification numbers used in DGGS Special Report 10: Radiometric Dates from Alaska-A 1975 Compilation”. The reader is referred to Special Report 10 for more complete information on location, rock type, dating method, and literature references for each age entry. A listing of dates in Special Report lo which require correction or deletion is included S table 2. Corrected and additional entries are listed in table 3. The listings in tables 2 and 3 follow the format of Special Report 10. Table 4 is a glossary of abbreviations used for quadrangle name, rock type, mineral dated, and type of dating method used.
","language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","publisherLocation":"Fairbanks, AK","doi":"10.14509/181","usgsCitation":"Wilson, F.H., and Turner, D.L., 1975, Radiometric age map of southcentral Alaska: Alaska Division of Geological & Geophysical Surveys Open File Report DGGS AOF 85, Map: 40.33 x 34.50 inches, https://doi.org/10.14509/181.","productDescription":"Map: 40.33 x 34.50 inches","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":480633,"rank":7,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14509/181","text":"Publisher Index Page"},{"id":341361,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":341695,"rank":3,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187729","text":"Radiometric age map of Aleutian Islands"},{"id":341696,"rank":4,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187731","text":"Radiometric age map of southwest Alaska"},{"id":341694,"rank":2,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70186560","text":"Radiometric age map of southeast Alaska"},{"id":341697,"rank":5,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187735","text":"Radiometric age map of northern Alaska"},{"id":341698,"rank":6,"type":{"id":22,"text":"Related Work"},"url":"https://pubs.usgs.gov/publication/70187736","text":"Radiometric dates from Alaska: A 1975 compilation"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -154,\n 58\n ],\n [\n -138,\n 58\n ],\n [\n -138,\n 65\n ],\n [\n -154,\n 65\n ],\n [\n -154,\n 58\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fd8e4b0a7fdb43ddf28","contributors":{"authors":[{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":695364,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, D. L.","contributorId":53776,"corporation":false,"usgs":true,"family":"Turner","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":695365,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70207384,"text":"70207384 - 1975 - Chemical compositions of Kilauea east-rift lava, 1968–1971","interactions":[],"lastModifiedDate":"2020-06-03T15:13:20.720167","indexId":"70207384","displayToPublicDate":"1975-12-18T13:45:05","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2420,"text":"Journal of Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Chemical compositions of Kilauea east-rift lava, 1968–1971","docAbstract":"The major element chemical compositions of lava from four eruptions on the east rift zone of Kilauea between August 1968 and October 1971 reflect three petrologic processes:
Production of chemically distinct batches of magma in the mantle.
Separation of olivine, augite, and plagioclase from liquid during flow in the rift-zone conduits.
Mixing of different magmas during ascent to the surface.
Chemically none of the four Kilauea east-rift eruptions matches the preceding summit eruption in Halemaumau that ended in July 1968. The Mauna Ulu eruption, May 1969 to October 1971 (the last of flie east-rift eruptions), can be divided into five olivine-controlled and chemically distinct variants. Three of these characterize the first seven months of the eruption and are closest in composition to the 1967–8 Halemaumau eruption. Variants 4 and 5 were erupted later and have compositions that are distinctly different from that of the 1967–8 eruption. Major differences are higher Al2O3 (0·15–0·23 per cent), and lower K2O (0·07–0·10 per cent) and TiO2 (0·12–0·23 per cent) in variants 4 and 5 at the same MgO content. Some lavas from eruptions in August and October 1968 and February 1969, have olivine-controlled magma compositions that are identical to mixtures of Mauna Ulu variants 1–3 and the 1967–8 composition. This observation fits an hypothesis advanced earlier by T. L. Wright and R. S. Fiske that magmas in the central magma chamber become mixed with magmas in the rift zone and can be identified as mixing components of rift eruption magmas before they appear as distinctive magmas in summit eruptions.
Lavas representing mixing of olivine-controlled magma with differentiated magma were erupted in October 1968, February 1969, and in May and December 1969.
The changes in amount of K2O and TiO2 during the latter part of the 1969–71 Mauna Ulu eruption are the reverse of the overall secular change in composition of Kilauea summit lavas from pre-1750 through 1967–8. The K2O and TiO2 contents of the latest overflows during the 1969–71 Mauna Ulu eruption (April 1971) are comparable to that of lava erupted at Kilauea summit prior to 1750.
The changing chemistry of Kilauea magma is found to be of use as a ‘tracer’ in the complex Kilauea conduit system. Application of these data to older lava sequences is difficul because of the complexity of the processes controlling lava composition and the absence of detailed information about the time-space chemical variation during individual eruptions.
","language":"English","publisher":"Oxford University Press","doi":"10.1093/petrology/16.1.110","usgsCitation":"Wright, T., Swanson, D., and Duffield, W.A., 1975, Chemical compositions of Kilauea east-rift lava, 1968–1971: Journal of Petrology, v. 16, no. 1, p. 110-133, https://doi.org/10.1093/petrology/16.1.110.","productDescription":"24 p.","startPage":"110","endPage":"133","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":370424,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.5499267578125,\n 19.002399756194887\n ],\n [\n -155.26702880859375,\n 19.235956641468505\n ],\n [\n -154.89898681640625,\n 19.35001948171314\n ],\n [\n -154.98687744140625,\n 19.531318700282522\n ],\n [\n -155.28900146484375,\n 19.694314241825747\n ],\n [\n -155.4071044921875,\n 19.611543503814232\n ],\n [\n -155.665283203125,\n 19.407021044033193\n ],\n [\n -155.73394775390625,\n 19.178895462707946\n ],\n [\n -155.5499267578125,\n 19.002399756194887\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"16","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Wright, Thomas L. twright@usgs.gov","contributorId":3890,"corporation":false,"usgs":true,"family":"Wright","given":"Thomas L.","email":"twright@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":777874,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swanson, Don 0000-0002-1680-3591 donswan@usgs.gov","orcid":"https://orcid.org/0000-0002-1680-3591","contributorId":168817,"corporation":false,"usgs":true,"family":"Swanson","given":"Don","email":"donswan@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":777875,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Duffield, Wendell A.","contributorId":14363,"corporation":false,"usgs":true,"family":"Duffield","given":"Wendell","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":777876,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70207348,"text":"70207348 - 1975 - Chino Valley formation (Cambrian?) in northwestern Arizona","interactions":[],"lastModifiedDate":"2020-06-03T14:09:06.968814","indexId":"70207348","displayToPublicDate":"1975-12-17T13:50:39","publicationYear":"1975","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":"Chino Valley formation (Cambrian?) in northwestern Arizona","docAbstract":"A thin persistent unit (maximum thickness 13 m) of probable Cambrian age in the Chino Valley region of northwestern Arizona consists of three laterally equivalent, mutually exclusive lithofacies. These are, from west to east, lithic sandstone, pebble to boulder conglomerate, and dolomite. The unit, named the Chino Valley Formation, is younger than middle Middle Cambrian and older than Devonian in age. A Late Cambrian age is probable, although no fossil evidence supports this conclusion.
The lithic sandstone and conglomerate facies were derived from two apparently active source areas and were probably deposited in shallow marine water. Uplift to the south or southwest of the area almost reversed the regionally westward-dipping Cambrian paleoslope and exposed sedimentary rocks to erosion. Sediment derived from this terrain formed the lithic sandstone facies. Synchronous movement initiated erosion of the Mazatzal Quartzite (Precambrian) from which the conglomerate facies was derived. The dolomite facies is inferred to have accumulated on a mud flat in the supratidal zone.
","language":"English","publisher":"Geographical Society of America","doi":"10.1130/0016-7606(1975)86<677:CVFCIN>2.0.CO;2","usgsCitation":"Hereford, R., 1975, Chino Valley formation (Cambrian?) in northwestern Arizona: GSA Bulletin, v. 86, no. 5, p. 677-682, https://doi.org/10.1130/0016-7606(1975)86<677:CVFCIN>2.0.CO;2.","productDescription":"6 p.","startPage":"677","endPage":"682","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":370372,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Chino Valley region","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.4228515625,\n 34.52466147177172\n ],\n [\n -111.99462890625,\n 34.52466147177172\n ],\n [\n -111.99462890625,\n 35.33529320309328\n ],\n [\n -113.4228515625,\n 35.33529320309328\n ],\n [\n -113.4228515625,\n 34.52466147177172\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"86","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hereford, Richard 0000-0002-0892-7367 rhereford@usgs.gov","orcid":"https://orcid.org/0000-0002-0892-7367","contributorId":3620,"corporation":false,"usgs":true,"family":"Hereford","given":"Richard","email":"rhereford@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":777780,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70207257,"text":"70207257 - 1975 - Discussion of uranium availability and the breeder decision","interactions":[],"lastModifiedDate":"2020-06-01T19:59:46.088584","indexId":"70207257","displayToPublicDate":"1975-12-13T13:39:56","publicationYear":"1975","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":"Discussion of uranium availability and the breeder decision","docAbstract":"No abstract available.
","language":"English","publisher":"Elsevier","usgsCitation":"Finch, W., Fischer, R.P., Butler, A., Masters, C., and Stead, F.W., 1975, Discussion of uranium availability and the breeder decision: Energy Systems and Policy, v. 1, no. 3, p. 259-269.","productDescription":"11 p.","startPage":"259","endPage":"269","costCenters":[],"links":[{"id":370264,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Finch, W.I.","contributorId":75919,"corporation":false,"usgs":true,"family":"Finch","given":"W.I.","email":"","affiliations":[],"preferred":false,"id":777474,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fischer, R. P.","contributorId":89958,"corporation":false,"usgs":true,"family":"Fischer","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":777475,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Butler, A.P. Jr.","contributorId":22414,"corporation":false,"usgs":true,"family":"Butler","given":"A.P.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":777476,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Masters, C.D.","contributorId":96664,"corporation":false,"usgs":true,"family":"Masters","given":"C.D.","email":"","affiliations":[],"preferred":false,"id":777477,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Stead, F. W.","contributorId":120710,"corporation":false,"usgs":true,"family":"Stead","given":"F.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":777478,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70207194,"text":"70207194 - 1975 - Crustal movement investigations","interactions":[],"lastModifiedDate":"2020-06-01T12:49:27.407828","indexId":"70207194","displayToPublicDate":"1975-12-11T13:52:35","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3283,"text":"Reviews of Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Crustal movement investigations","docAbstract":"Studies of horizontal crustal movement using conventional geodetic methods have been considerably expanded in the quadrennium 1971–1974. The basic fault monitor Geodimeter network now covers most of the major faults in California as well as the zone of faulting that extends into Nevada. Isolated Geodimeter networks in seismic areas of Montana, New Mexico, Utah, and Washington are also monitored. Part of the Geodimeter network along the San Andreas fault has been monitored for over 15 yr, and there appears to be a systematic deviation from a linear trend for most of the lines [Greensfelder and Bennett, 1973; Savage et al., 1973]. However, this deviation may be an artifact of a change in survey procedures in mid‐1969. The conclusions that can be drawn from the Geodimeter observations at present are the following: (1) The present apparent interplate motion across the San Andreas fault in central California is only 30–40 mm/yr [Savage and Burford, 1973], in contrast to the average of 50–60 mm/yr as estimated from magnetic anomalies at the mouth of the Gulf of California. (2) Measurements of fault creep on the creeping segment of the San Andreas fault agree reasonably well with the plate movement indicated by geodetic measurements, this agreement suggesting that fault creep on this segment is the principal mode of accommodation [Savage and Burford, 1971]. (3) The rate of strain accumulation along the San Andreas fault is not well measured anywhere, but the overall tensor strain rate appears to be about 0.3 microstrain/yr or less [Savage et al., 1973]. A considerable effort has also been expended reanalyzing old triangulation data for networks that cross the San Andreas fault. In such a study, Thatcher [1974] deduced evidence for several meters of afterslip on the San Andreas fault at depths greater than 10 km following the 1906 earthquake. This appears at the surface as a very rapid accumulation of strain in the years immediately following the earthquake. Meade [1974] has called attention to a remarkably uniform change of the astronomic azimuth with time for a line that crosses the San Andreas fault about 35 km south of the southern terminus of the 1906 rupture. This change of azimuth implies a uniform right lateral motion across the fault amounting to 32 mm/yr in the period 1885–1962. By comparing a 1942 triangulation survey and a 1970 Geodimeter survey, Page [1972] found neither lateral slip nor shear strain accumulation consistent with lateral slip across the Denali fault in Alaska. He did observe a north‐south extension that was possibly an effect of strain release at the time of the 1964 Alaska earthquake.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/RG013i003p00263","usgsCitation":"Savage, J.C., 1975, Crustal movement investigations: Reviews of Geophysics, v. 13, no. 3, p. 263-265, https://doi.org/10.1029/RG013i003p00263.","productDescription":"3 p.","startPage":"263","endPage":"265","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":370175,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-06-14","publicationStatus":"PW","contributors":{"authors":[{"text":"Savage, James C. 0000-0002-5114-7673 jasavage@usgs.gov","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":2412,"corporation":false,"usgs":true,"family":"Savage","given":"James","email":"jasavage@usgs.gov","middleInitial":"C.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":777237,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70236971,"text":"70236971 - 1975 - Land classification of south-central Iowa from computer enhanced images","interactions":[],"lastModifiedDate":"2022-09-23T17:36:40.388876","indexId":"70236971","displayToPublicDate":"1975-11-01T12:18:04","publicationYear":"1975","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":66,"text":"Report","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"3","title":"Land classification of south-central Iowa from computer enhanced images","docAbstract":"The author has identified the following significant results. Two enhanced false color negatives from multispectral scanner scenes, dated 15 April 1974 and 29 August 1972, were printed at a scale of 1:125,000 to form the basis for land use interpretations in the Wapello County, Iowa test site. The use of geomorphic principles proved valuable in the interpretation of the April scene to form valuable generalizations for planning purposes on soil associations, topography, alluvial valleys, and agricultural land use. The August scene was superior in providing information on urban extent, transportation networks, forest cover, and water bodies.
","language":"English","publisher":"National Aeronautics and Space Administration","usgsCitation":"Lucas, J.R., Taranik, J.V., and Billingsley, F.C., 1975, Land classification of south-central Iowa from computer enhanced images: Report 3, iv, 42 p.","productDescription":"iv, 42 p.","costCenters":[],"links":[{"id":407275,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":407274,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://ntrs.nasa.gov/api/citations/19760011495/downloads/19760011495.pdf","size":"4178 KB","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Iowa","county":"Wapello County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-92.1816,41.1617],[-92.1802,41.0741],[-92.1799,40.987],[-92.1798,40.8994],[-92.2959,40.8992],[-92.4096,40.8989],[-92.5251,40.8984],[-92.64,40.8979],[-92.6395,40.985],[-92.641,41.0699],[-92.6441,41.1597],[-92.527,41.1602],[-92.4116,41.1611],[-92.2981,41.1615],[-92.1816,41.1617]]]},\"properties\":{\"name\":\"Wapello\",\"state\":\"IA\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Lucas, James R.","contributorId":149239,"corporation":false,"usgs":false,"family":"Lucas","given":"James","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":852868,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taranik, James V.","contributorId":67514,"corporation":false,"usgs":true,"family":"Taranik","given":"James","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":852869,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Billingsley, Frederic C.","contributorId":149240,"corporation":false,"usgs":false,"family":"Billingsley","given":"Frederic","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":852870,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70232677,"text":"70232677 - 1975 - Generation of potassium-poor magmas in the northern Sierra Nevada and the Svecofennian of Finland","interactions":[],"lastModifiedDate":"2022-07-11T17:01:46.527743","indexId":"70232677","displayToPublicDate":"1975-11-01T11:52:11","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Generation of potassium-poor magmas in the northern Sierra Nevada and the Svecofennian of Finland","docAbstract":"Comparison of the evolution of magmas in the Precambrian of southwestern Finland with that in the Paleozoic and Mesozoic of the northern Sierra Nevada brings out features that may clarify the origin of potassium-poor silicic magmas. In the northern Sierra Nevada, Paleozoic sodarhyolitic effusive rocks and associated trondhjemite represent silicic differentiates of andesitic magmas formed near a Benioff zone. These potassium-poor magmas were formed early, before thickening of the crust, and were followed by basaltic and rhyolitic magmas with normal potassium content. In southwestern Finland, where 70 percent of the area is covered by silicic and intermediate plutonic rocks, the early synkinematic intrusive masses are trondhjemitic and the later ones are granitic with eutectic ratios of quartz, plagioclase, and potassium feldspar. The latest granites are exceptionally rich in potassium feldspar. The oldest rocks, cordierite-garnet-sillimanite gneisses and interbedded metavolcanic rocks, are folded on gently plunging axes that steepen diapirically around large late-kinematic plutonic masses. Trondhjemite occurs as thin sheetlike masses parallel to the folded bedding and could not have traveled far without losing its initial heat. Therefore it seems that the trondhjemitic magma was formed at shallow depths. By analogy with the shallow depth of early magma generation in the northern Sierra Nevada, it is suggested that the trondhjemitic magmas in Finland formed at mantle depths near a Benioff zone or at the base of the early thin crust at pressures where phlogopite or biotite was stable. Later, after thickening of the crust above, potassium from the biotite was released, making the late kinematic magmas rich in potassium. A plate-tectonic model of an island-arc environment explains the coeval age of the Svecofennian and \"Karelian\" foldbelts and the increase of potassium with decreasing age in the extrusive and intrusive magmas.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Hietanen, A., 1975, Generation of potassium-poor magmas in the northern Sierra Nevada and the Svecofennian of Finland: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 631-645.","productDescription":"15 p.","startPage":"631","endPage":"645","costCenters":[],"links":[{"id":403417,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403415,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf"}],"country":"Finland, United states","otherGeospatial":"northern Sierra Nevada, Svecofennian block","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -121.53076171875,\n 39.45316112807394\n ],\n [\n -120.32226562500001,\n 39.45316112807394\n ],\n [\n -120.32226562500001,\n 40.48038142908172\n ],\n [\n -121.53076171875,\n 40.48038142908172\n ],\n [\n -121.53076171875,\n 39.45316112807394\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 22.631835937499996,\n 60.726943611101966\n ],\n [\n 28.037109375,\n 60.726943611101966\n ],\n [\n 28.037109375,\n 63.65601144183318\n ],\n [\n 22.631835937499996,\n 63.65601144183318\n ],\n [\n 22.631835937499996,\n 60.726943611101966\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Hietanen, Anna","contributorId":43841,"corporation":false,"usgs":true,"family":"Hietanen","given":"Anna","affiliations":[],"preferred":false,"id":846232,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70232778,"text":"70232778 - 1975 - Ion-selective electrode determination of iodine in rocks and soils","interactions":[],"lastModifiedDate":"2022-07-12T15:53:16.190487","indexId":"70232778","displayToPublicDate":"1975-11-01T10:51:13","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Ion-selective electrode determination of iodine in rocks and soils","docAbstract":"Use of an iodide-ion-selective electrode permits rapid and fairly accurate determination of iodine (as iodide) in rocks and soils. When a 1-g sample is used, concentrations as small as 0.5 ppm can be determined with a precision of about 25-percent relative standard deviation. When bromine concentration is greater than 5 ppm, the same method can be used for bromine determination. The procedure merits further investigation as a possible tool in geochemical prospecting.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Ficklin, W.H., 1975, Ion-selective electrode determination of iodine in rocks and soils: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 753-755.","productDescription":"3 p.","startPage":"753","endPage":"755","costCenters":[],"links":[{"id":403513,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403512,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ficklin, W. H.","contributorId":89517,"corporation":false,"usgs":true,"family":"Ficklin","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":846401,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70232774,"text":"70232774 - 1975 - Absolute age of disseminated uraninite in Wheeler Basin, Grand County, Colorado","interactions":[],"lastModifiedDate":"2022-07-12T15:50:32.904345","indexId":"70232774","displayToPublicDate":"1975-11-01T10:43:07","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Absolute age of disseminated uraninite in Wheeler Basin, Grand County, Colorado","docAbstract":"Uranium and lead isotopic analyses of monazlte and uraninite from the disseminated uraninite occurrence at Wheeler Basin, Grand County, Colo., indicate that these minerals formed 1,446±20 m.y. ago. This time correlates well with intrusion of the Silver Plume Granite. The uraninite and monazite were also affected by a later disturbance at 880±130 m.y., but show essentially no effects of subsequent events. This secondary disturbance may have been due to intrusion of dikes related to the Pikes Peak batholith, dated at 1,041±13 m.y. ago.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Ludwig, K., and Young, E.J., 1975, Absolute age of disseminated uraninite in Wheeler Basin, Grand County, Colorado: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 747-751.","productDescription":"5 p.","startPage":"747","endPage":"751","costCenters":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"links":[{"id":403511,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403509,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Colorado","county":"Grand County","otherGeospatial":"Wheeler basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.68058013916016,\n 40.03339786241084\n ],\n [\n -105.6364631652832,\n 40.03339786241084\n ],\n [\n -105.6364631652832,\n 40.06651166669528\n ],\n [\n -105.68058013916016,\n 40.06651166669528\n ],\n [\n -105.68058013916016,\n 40.03339786241084\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Ludwig, K.R.","contributorId":97112,"corporation":false,"usgs":true,"family":"Ludwig","given":"K.R.","email":"","affiliations":[{"id":218,"text":"Denver Federal Center","active":false,"usgs":true}],"preferred":false,"id":846397,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Young, E. J.","contributorId":82316,"corporation":false,"usgs":true,"family":"Young","given":"E.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":846398,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70232772,"text":"70232772 - 1975 - A late Holocene pollen diagram from near Lake Tahoe, El Dorado County, California","interactions":[],"lastModifiedDate":"2022-07-12T15:39:05.026689","indexId":"70232772","displayToPublicDate":"1975-11-01T10:32:48","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"A late Holocene pollen diagram from near Lake Tahoe, El Dorado County, California","docAbstract":"A 2,500-yr pollen record from an alpine meadow in the central Sierra Nevada shows a general agreement with other more detailed pollen records from the late Holocene of California. Tree roots from the site suggest dry conditions at about 1150 and 1350 radiocarbon yr B.P.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Sercelj, A., and Adam, D.P., 1975, A late Holocene pollen diagram from near Lake Tahoe, El Dorado County, California: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 737-745.","productDescription":"9 p.","startPage":"737","endPage":"745","costCenters":[],"links":[{"id":403508,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403506,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf"}],"country":"United States","state":"California","county":"El Dorado County","otherGeospatial":"Lake Tahoe","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.17944335937499,\n 38.79690830348427\n ],\n [\n -120.0094985961914,\n 38.79690830348427\n ],\n [\n -120.0094985961914,\n 38.89343778664929\n ],\n [\n -120.17944335937499,\n 38.89343778664929\n ],\n [\n -120.17944335937499,\n 38.79690830348427\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Sercelj, Alojz","contributorId":293006,"corporation":false,"usgs":false,"family":"Sercelj","given":"Alojz","email":"","affiliations":[],"preferred":false,"id":846395,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Adam, David P.","contributorId":36132,"corporation":false,"usgs":true,"family":"Adam","given":"David","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":846396,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70232771,"text":"70232771 - 1975 - Modern pollen surface samples: An analysis of subsamples","interactions":[],"lastModifiedDate":"2022-07-12T15:31:58.928629","indexId":"70232771","displayToPublicDate":"1975-11-01T10:29:36","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Modern pollen surface samples: An analysis of subsamples","docAbstract":"Multiple subsamples of pollen samples obtained from the modern soil surface at two sites in southern Arizona were individually collected and analyzed to evaluate the practice of mixing subsamples when collecting modern surface samples. Results suggest that at least five subsamples must be mixed in order to avoid collecting a sample that is not representative of the local pollen rain.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Adam, D.P., and Mehringer, P.J., 1975, Modern pollen surface samples: An analysis of subsamples: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 733-736.","productDescription":"4 p.","startPage":"733","endPage":"736","costCenters":[],"links":[{"id":403505,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403504,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Adam, David P.","contributorId":36132,"corporation":false,"usgs":true,"family":"Adam","given":"David","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":846393,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mehringer, Peter J.","contributorId":79470,"corporation":false,"usgs":true,"family":"Mehringer","given":"Peter","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":846394,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70232767,"text":"70232767 - 1975 - A late Holocene pollen record from Pearson's Pond, Weeks Creek landslide, San Francisco Peninsula, California","interactions":[],"lastModifiedDate":"2022-07-12T15:28:31.504358","indexId":"70232767","displayToPublicDate":"1975-11-01T10:21:16","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"A late Holocene pollen record from Pearson's Pond, Weeks Creek landslide, San Francisco Peninsula, California","docAbstract":"A 210-cm core from Pearson's Pond yielded a pollen record for the past 3 millenia. Prior to A.D. 1000 the pond biota was particularly sensitive to climatic fluctuations. Two wet intervals occur in the pollen record, between 350 B.C. and A.I). 0 and between A.D. 650 and 900. The pollen record suggests that the Weeks Creek landslide may have moved at least twice prior to 3,000 years ago and that the middle part of the glide has been stable since that time. Seasonal changes produce large annual fluctuations in the water table, and climatic changes during the past 3,000 years have produced significant changes in the timing and magnitude of the annual changes. Climatic records such as the one presented here will help us to understand and separate the effects of climate and earthquakes on the landslide history of the Holocene deposits of the San Francisco Bay area.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"U.S. Geological Survey, 1975, A late Holocene pollen record from Pearson's Pond, Weeks Creek landslide, San Francisco Peninsula, California: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 721-731.","productDescription":"11 p.","startPage":"721","endPage":"731","costCenters":[],"links":[{"id":403503,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403501,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"Pearson's Pond, San Francisco Peninisula","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.2779607772827,\n 37.326300920153855\n ],\n [\n -122.27650165557861,\n 37.326300920153855\n ],\n [\n -122.27650165557861,\n 37.32754651163429\n ],\n [\n -122.2779607772827,\n 37.32754651163429\n ],\n [\n -122.2779607772827,\n 37.326300920153855\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW"} ,{"id":70232766,"text":"70232766 - 1975 - Stratigraphy, conodont dating, and paleotectonic interpretation of the type Milligen Formation (Devonian), Wood River area, Idaho","interactions":[],"lastModifiedDate":"2022-07-12T15:20:01.706831","indexId":"70232766","displayToPublicDate":"1975-11-01T10:10:55","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Stratigraphy, conodont dating, and paleotectonic interpretation of the type Milligen Formation (Devonian), Wood River area, Idaho","docAbstract":"The Milligen Formation at and near its type locality in the Wood River area is considerably older than and unrelated to rocks of Early Mississippian age called Milligen Formation in the Lost River Range and other ranges of east-central Idaho. Conodont faunas were found in limestones of a thin upper member of the sparsely fossiliferous marine Milligen Formation in its principal reference section at Milligen Gulch, at Fisher Canyon, and near Bellevue, Idaho. The faunas include indigenous conodonts here assigned to the early Late Devonian (early Frasnian) Lower and Middle Polygnathus asymmetricus Zones, and reworked conodonts derived from several Middle and Early Devonian conodont zones. An underlying much thicker argillite member of the Milligen contains fewer limestones, but a thin encrinite interbed near the middle of the member yielded early Middle Devonian (Eifelian) conodonts. This lower member probably represents most of Middle and Early Devonian time. Although its base is nowhere exposed in the Wood River area, the Milligen is inferred to have been deposited on the Silurian Trail Creek Formation, which crops out just to the east in the Pioneer Mountains. The age of the Milligen is therefore wholly Devonian and the highest fossiliferous beds are no younger than early Late Devonian. Reworked Middle and Early Devonian conodonts in limestone turbidites of the upper member of the Milligen Formation are identical to conodonts found in shelf (miogeosynclinal) carbonate rocks farther east. A postulated eastern source for the turbidites is supported by new data on the distribution, thickness, and tectonic facies of Devonian rocks that suggest the presence of a Late Devonian ridge on the continental shelf east of the Milligen depositional area. The Milligen Formation was intensely folded and was emergent during most of the Mississippian time when it formed part of the Antler Highlands, which shed flysch sediments eastward into the Copper basin. The Wood River Formation of Pennsylvanian and Permian age was then deposited over a subdued topography on the Milligen Formation. The Hailey Conglomerate Member at the base of the Wood River filled many irregularities in the surface. This depositional contact later was largely destroyed and the contact between the Milligen and Wood River is now a regional thrust fault at most places.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Sandberg, C., Hall, W.E., Batchelder, J.N., and Axelsen, C., 1975, Stratigraphy, conodont dating, and paleotectonic interpretation of the type Milligen Formation (Devonian), Wood River area, Idaho: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 707-720.","productDescription":"14 p.","startPage":"707","endPage":"720","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":403500,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403499,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Idaho","otherGeospatial":"Wood River area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -114.41162109375,\n 43.38608793041562\n ],\n [\n -113.94882202148438,\n 43.38608793041562\n ],\n [\n -113.94882202148438,\n 43.71057158566884\n ],\n [\n -114.41162109375,\n 43.71057158566884\n ],\n [\n -114.41162109375,\n 43.38608793041562\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Sandberg, Charles sandberg@usgs.gov","contributorId":199124,"corporation":false,"usgs":true,"family":"Sandberg","given":"Charles","email":"sandberg@usgs.gov","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":846387,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hall, Wayne E.","contributorId":89955,"corporation":false,"usgs":true,"family":"Hall","given":"Wayne","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":846388,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Batchelder, John N.","contributorId":103729,"corporation":false,"usgs":true,"family":"Batchelder","given":"John","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":846389,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Axelsen, Claus","contributorId":293001,"corporation":false,"usgs":false,"family":"Axelsen","given":"Claus","email":"","affiliations":[],"preferred":false,"id":846390,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70232762,"text":"70232762 - 1975 - Silurian and Devonian miogeosynclinal and transitional rocks of the Fish Creek Reservoir window, central Idaho","interactions":[],"lastModifiedDate":"2022-07-12T15:09:57.608313","indexId":"70232762","displayToPublicDate":"1975-11-01T10:00:54","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Silurian and Devonian miogeosynclinal and transitional rocks of the Fish Creek Reservoir window, central Idaho","docAbstract":"Documentation of Devonian continental-shelf shallow-water carbonate rocks in the core of the Fish Creek Reservoir window shifts the known westernmost limit of the Devonian miogeosyncline 50 km (30 mi) southwest across the structural grain from the well-known miogeosynclinal sequence in the Lost River Range. The miogeosynclinal carbonate sequence in the window has a minimum thickness of 450 m (1,500 ft). It comprises the upper Lower Devonian (Emsian) and lower Middle Devonian (Eifelian) Carey Dolomite (new), the upper Middle Devonian (Givetian) and Upper Devonian Jefferson Formation, and the Upper Devonian Picabo Formation (new). Conodont faunas precisely date the Carey. The Picabo Formation, composed of interbedded sandy dolomite-pebble conglomerate and dolomitic quartzose sandstone, is unlike any previously described formation of Late Devonian or Early Mississippian age in central Idaho. It resembles parts of the Stansbury, Beirdneau, Leatham, and Victoria Formations, which reflect areas of local Late Devonian uplift and erosion of older shelf rocks in northern Utah and southeastern Idaho. Transitional (continental-slope) rocks of the Roberts Mountains Formation representing reef and offreef facies are thrust over the Devonian shelf sequence within the Fish Creek Reservoir window. The Roberts Mountains Formation here is precisely dated as latest Silurian (Pridolian, eosteinhornensis Zone) through earliest Devonian (Lochkovian) by a sequence of conodont faunas. The easternmost known exposures of possible Devonian siliceous facies rocks assigned to the Milligen(?) Formation are present less than 4.8 km (3 mi) southwest of the shelf sequence. Structural relations and paleotectonic reconstructions suggest that they have a minimum eastward translation of 32 km (20 mi). The Devonian continent-ocean basin interface, along which the Antler orogenic belt developed at this latitude, probably was located near the east edge of the present Idaho batholith.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Skipp, B.A., and Sandberg, C., 1975, Silurian and Devonian miogeosynclinal and transitional rocks of the Fish Creek Reservoir window, central Idaho: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 691-706.","productDescription":"16 p.","startPage":"691","endPage":"706","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":403498,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403497,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Idaho","otherGeospatial":"Fish Creek Reservoir window","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.86642456054688,\n 43.40118121755815\n ],\n [\n -113.79707336425781,\n 43.40118121755815\n ],\n [\n -113.79707336425781,\n 43.461641371770504\n ],\n [\n -113.86642456054688,\n 43.461641371770504\n ],\n [\n -113.86642456054688,\n 43.40118121755815\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Skipp, Betty A. bskipp@usgs.gov","contributorId":1778,"corporation":false,"usgs":true,"family":"Skipp","given":"Betty","email":"bskipp@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":846385,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sandberg, Charles sandberg@usgs.gov","contributorId":199124,"corporation":false,"usgs":true,"family":"Sandberg","given":"Charles","email":"sandberg@usgs.gov","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":846386,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70232757,"text":"70232757 - 1975 - Structure and Paleozoic stratigraphy of a complex of thrust plates in the Fish Creek Reservoir area, south-central Idaho","interactions":[],"lastModifiedDate":"2022-07-12T14:59:08.409781","indexId":"70232757","displayToPublicDate":"1975-11-01T09:43:36","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Structure and Paleozoic stratigraphy of a complex of thrust plates in the Fish Creek Reservoir area, south-central Idaho","docAbstract":"Permian, Pennsylvanian, Mississippian, Devonian, and Silurian marine rocks of diverse facies are brought together in a complex of six thrust sheets in the Fish Creek Reservoir area on the north edge of the Snake River Plain, Idaho. The lowest structural element, the parautochthon, is made of more than 450 m (1,500 ft) of folded and faulted Devonian miogeosynclinal carbonate rocks present in a 6.5-km2 (2.5-mi2 ) window. Along the east margin of the window, a sliver of continental margin transitional carbonate rocks of Early Devonian and Late Silurian age assigned to the Roberts Mountains Formation is thrust over the miogeosynclinal rocks. The window of middle Paleozoic rocks is overridden along the Fish Creek thrust fault by the flysch facies of the Copper Basin Formation, a turbidite-submarine-fan sequence more than 1,000 m (3,300 ft) thick, of Mississippian age. About 4.8 km (3 mi) southwest of the window, about 100 m (300 ft) of deepwater siliceous oceanic facies clastic rocks are exposed, which are assigned with question to the Milligen(?) Formation of Devonian age. These clastic rocks are interpreted to be thrust over the Copper Basin Formation. The highest structural elements are sequences more than 610 m (2,000 ft) thick of interbedded sandy and conglomeratic limestones, quartzites, and conglomerates and interbedded siltstones and argillites of the Wood River Formation of Middle Pennsylvanian to Early Permian age. The Wood River Formation is in thrust contact with the Milligen(?) Formation in the southwest part of the mapped area and with Copper Basin Formation along the west side of Fish Creek Reservoir. All the thrust sheets have moved eastward. The minimum distance moved is estimated from sedimentation models and facies reconstructions to range from perhaps several kilometres for the allochthon of the Roberts Mountains Formation to 48 km (30 mi) for the Milligen(?) Formation allochthon. The principal period of thrusting was post-Early Permian (post-Wood River Formation) and preEocene (pre-Challis Volcanics) and is of probable Sevier age. Middle Paleozoic rocks of the Milligen and Roberts Mountains Formations, however, also may have been involved in an earlier period of thrusting of latest Devonian to earliest Mississippian age related to the Antler orogeny. The thrust sheets were deformed into a northwest-trending dome in late Mesozoic time and were broken by basin-range faults during the Tertiary.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Skipp, B.A., and Hall, W.E., 1975, Structure and Paleozoic stratigraphy of a complex of thrust plates in the Fish Creek Reservoir area, south-central Idaho: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 671-689.","productDescription":"19 p.","startPage":"671","endPage":"689","costCenters":[],"links":[{"id":403496,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403494,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Idaho","otherGeospatial":"Fish Creek Reservoir area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -114.46105957031249,\n 43.100982876188546\n ],\n [\n -113.6700439453125,\n 43.100982876188546\n ],\n [\n -113.6700439453125,\n 43.67979094030124\n ],\n [\n -114.46105957031249,\n 43.67979094030124\n ],\n [\n -114.46105957031249,\n 43.100982876188546\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Skipp, Betty A. bskipp@usgs.gov","contributorId":1778,"corporation":false,"usgs":true,"family":"Skipp","given":"Betty","email":"bskipp@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":846383,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hall, Wayne E.","contributorId":89955,"corporation":false,"usgs":true,"family":"Hall","given":"Wayne","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":846384,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70232751,"text":"70232751 - 1975 - Description of the geoelectric section, Rattlesnake Hills unit 1 well, Washington","interactions":[],"lastModifiedDate":"2022-07-12T14:38:33.888469","indexId":"70232751","displayToPublicDate":"1975-11-01T09:33:02","publicationYear":"1975","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2446,"text":"Journal of Research of the U.S. Geological Survey","active":true,"publicationSubtype":{"id":10}},"title":"Description of the geoelectric section, Rattlesnake Hills unit 1 well, Washington","docAbstract":"A complex 64-in. normal log from the 3,249-m-deep Rattlesnake Hills well was digitized and reduced to a form resembling a simple resistance log. The simplified form of the log made it possible to recognize three major geoelectric intervals in the well that were not apparent on the original log. The apparent resistivity values from each geoelectric interval are grouped into a frequency-distribution table, where midpoints of the class interval are corrected for the effects of hole diameter and mud resistivity. Using corrected class-interval midpoint resistivities, first-approximation values are calculated for five geoelectric parameters: total transverse resistance, total longitudinal conductance, average longitudinal resistivity, average transverse resistivity, and the coefficient of anisotropy. Comparison of anisotropies, resistivity variations, and resistivity-frequency polygon shapes indicates quantitative differences among the three geoelectric intervals.
","language":"English","publisher":"U.S. Geological Survey","usgsCitation":"Jackson, D.B., 1975, Description of the geoelectric section, Rattlesnake Hills unit 1 well, Washington: Journal of Research of the U.S. Geological Survey, v. 3, no. 6, p. 665-669.","productDescription":"5 p.","startPage":"665","endPage":"669","costCenters":[],"links":[{"id":403492,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":403490,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/journal/1975/vol3issue6/report.pdf"}],"country":"United States","state":"Washington","otherGeospatial":"Rattlesnake Hills","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -120.00778198242186,\n 46.36967413462374\n ],\n [\n -119.7784423828125,\n 46.36967413462374\n ],\n [\n -119.7784423828125,\n 46.523910423887635\n ],\n [\n -120.00778198242186,\n 46.523910423887635\n ],\n [\n -120.00778198242186,\n 46.36967413462374\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"3","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Jackson, Dallas B.","contributorId":19947,"corporation":false,"usgs":true,"family":"Jackson","given":"Dallas","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":846379,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}