The use of multichannel seismic-reflection profiles to study oceanic areas has advanced our understanding of deep crustal structure and the history of its development. Off eastern North America, where the structure of the continental margin is essentially constructional, seismic profiles have approximated geologic cross sections up to 10–15 km below the sea floor and revealed major structural and stratigraphic features that have regional hydrocarbon potential. These features include (a) a block-faulted basement hinge zone; (b) a deep, broad, rifted basement filled with clastic sediment and salt; and (c) a buried paleoshelf-edge complex that has many forms. The mapping of seismo-stratigraphic units over the continental shelf, slope, and rise has shown that the margin's developmental state included infilling of a rifted margin, buildup of a carbonate platform, and construction of an onlapping continental-rise wedge that was accompanied by eroison of the slope.
Correlation of seismic stratigraphy with well-log biostratigraphy reveals that the area experienced a gradual rise in sea level during the Mesozoic and an episodic sea-level fall during the Cenozoic. These long-term changes formed a subdued continental shelf-slope-rise transition in the early Tertiary and a steepened one in the Quaternary. Comparison of seismic and drill-hole data has also shown margin-wide unconformities similar to those shown by the Vail curve of coastal onlap and eustatic sea-level change, i.e., unconformities that provide markers to subdivide the sequences of reflections on the seismic-reflection profiles. Further, the termination of older key reflectors against oceanic basement gives us a corroborative check on the age of oceanic crust as determined from the magnetic anomalies produced by sea-floor-spreading.
","language":"English","publisher":"Taylor & Francis","doi":"10.5408/0022-1368-34.2.72","issn":"00221368","usgsCitation":"Schlee, J.S., and Klitgord, K., 1986, Structure of the North American Atlantic Continental Margin: Journal of Geological Education, v. 34, no. 2, p. 72-89, https://doi.org/10.5408/0022-1368-34.2.72.","productDescription":"18 p.","startPage":"72","endPage":"89","numberOfPages":"18","costCenters":[],"links":[{"id":480141,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5408/0022-1368-34.2.72","text":"Publisher Index Page"},{"id":225790,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"34","issue":"2","noUsgsAuthors":false,"publicationDate":"2018-02-13","publicationStatus":"PW","scienceBaseUri":"505b9c5ee4b08c986b31d3c7","contributors":{"authors":[{"text":"Schlee, J. S.","contributorId":68337,"corporation":false,"usgs":true,"family":"Schlee","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":368935,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Klitgord, K.K.","contributorId":41152,"corporation":false,"usgs":true,"family":"Klitgord","given":"K.K.","affiliations":[],"preferred":false,"id":368934,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015694,"text":"70015694 - 1986 - Repetitive digital NOAA-AVHRR data for Alaskan engineering and scientific applications","interactions":[],"lastModifiedDate":"2022-04-15T14:30:50.36376","indexId":"70015694","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Repetitive digital NOAA-AVHRR data for Alaskan engineering and scientific applications","docAbstract":"Selected digitally enhanced NOAA - Advanced Very High Resolution Radiometer (AVHRR) images taken by the NOAA 6, 7, 8 and 9 Polar Orbiting Satellites demonstrate the capability and application of repetitive low-resolution satellite data to Alaska's engineering and science community. Selected cloud-free visible and thermal infrared images are enhanced to depict distinct oceanographic and geologic processes along Alaska's west coast and adjacent seas. Included are the advance of the Bering Sea ice field, transport of Yukon River sediment into Norton Sound, and monitoring of plume trajectories from the Mount Augustine volcanic eruptions. Presented illustrations are representative of the 94 scenes in a cooperative USGS EROS/NOAA Alaskan AVHRR Digital Archive. This paper will discuss the cooperative efforts in establishing the first year data set and identifying Alaskan applications.","largerWorkTitle":"Technical Papers of the American Society of Photogrammetry, Fall Technical Meeting","conferenceTitle":"1986 ASPRS-ACSM Fall Convention","conferenceLocation":"Anchorage, AK, USA","language":"English","publisher":"American Soc for Photogrammetry & Remote Sensing","publisherLocation":"Falls Church, VA, USA","issn":"02714043","isbn":"0937294764","usgsCitation":"Christie, W.M., Pawlowski, R.J., and Fleming, M.D., 1986, Repetitive digital NOAA-AVHRR data for Alaskan engineering and scientific applications, in Technical Papers of the American Society of Photogrammetry, Fall Technical Meeting, Anchorage, AK, USA, p. 369-378.","productDescription":"10 p.","startPage":"369","endPage":"378","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) 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\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a935ae4b0c8380cd80d6e","contributors":{"authors":[{"text":"Christie, William M.","contributorId":22501,"corporation":false,"usgs":true,"family":"Christie","given":"William","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":371540,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pawlowski, Robert J.","contributorId":43107,"corporation":false,"usgs":true,"family":"Pawlowski","given":"Robert","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":371541,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fleming, Michael D.","contributorId":102638,"corporation":false,"usgs":true,"family":"Fleming","given":"Michael","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":371542,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014665,"text":"70014665 - 1986 - URBAN STORMWATER-QUALITY INVESTIGATIONS BY THE USGS.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:32","indexId":"70014665","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"URBAN STORMWATER-QUALITY INVESTIGATIONS BY THE USGS.","docAbstract":"U. S. Geological Survey (USGS) urban stormwater investigations, in cooperation with local and Federal agencies, have produced significant national data bases of information and enhanced understanding of urban hydrologic processes. Studies in progress include statistical regionalization of urban stormwater quality, the effects of stormwater detention on water quality, ways of improving instrumentation for urban hydrology studies, and an evaluation and update of urban gaging networks. Studies performed by USGS since 1968, including 12 studies that were in the Environmental Protection Agency Nationwide Urban Runoff Program, are being summarized in a USGS report.","conferenceTitle":"Urban Runoff Quality - Impact and Quality Enhancement Technology, Proceedings of an Engineering Foundation Conference.","conferenceLocation":"Henniker, NH, USA","language":"English","publisher":"ASCE","publisherLocation":"New York, NY, USA","isbn":"087262577X","usgsCitation":"Jennings, M.E., and Miller, T.L., 1986, URBAN STORMWATER-QUALITY INVESTIGATIONS BY THE USGS., Urban Runoff Quality - Impact and Quality Enhancement Technology, Proceedings of an Engineering Foundation Conference., Henniker, NH, USA, p. 29-33.","startPage":"29","endPage":"33","numberOfPages":"5","costCenters":[],"links":[{"id":225907,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbb43e4b08c986b3285d8","contributors":{"editors":[{"text":"Urbonas BenRoesner Larry A.","contributorId":128383,"corporation":true,"usgs":false,"organization":"Urbonas BenRoesner Larry A.","id":536292,"contributorType":{"id":2,"text":"Editors"},"rank":1}],"authors":[{"text":"Jennings, Marshall E.","contributorId":55813,"corporation":false,"usgs":true,"family":"Jennings","given":"Marshall","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":368948,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Timothy L.","contributorId":9263,"corporation":false,"usgs":true,"family":"Miller","given":"Timothy","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":368947,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015051,"text":"70015051 - 1986 - Use of dust storm observations on satellite images to identify areas vulnerable to severe wind erosion","interactions":[],"lastModifiedDate":"2012-03-12T17:19:00","indexId":"70015051","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1252,"text":"Climatic Change","active":true,"publicationSubtype":{"id":10}},"title":"Use of dust storm observations on satellite images to identify areas vulnerable to severe wind erosion","docAbstract":"Blowing dust is symptomatic of severe wind erosion and deterioration of soils in areas undergoing dessication and/or devegetation. Dust plumes on satellite images can commonly be traced to sources in marginally arable semiarid areas where protective lag gravels or vegetation have been removed and soils are dry, as demonstrated for the Portales Valley, New Mexico. Images from Landsat and manned orbiters such as Skylab and the Space Shuttle are useful for illustrating the regional relations of airborne dust plumes to source areas. Geostationary satellites such as GOES are useful in tracking the time-histories of episodic dust storms. These events sometimes go unrecognized by weather observers and are the precursors of long-term land degradation trends. In areas where soil maps and meteorological data are inadequate, satellite images provide a means for identifying problem areas where measures are needed to control or mitigate wind erosion. ?? 1986 D. Reidel Publishing Company.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Climatic Change","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Kluwer Academic Publishers","doi":"10.1007/BF00140539","issn":"01650009","usgsCitation":"Breed, C.S., and McCauley, J., 1986, Use of dust storm observations on satellite images to identify areas vulnerable to severe wind erosion: Climatic Change, v. 9, no. 1-2, p. 243-258, https://doi.org/10.1007/BF00140539.","startPage":"243","endPage":"258","numberOfPages":"16","costCenters":[],"links":[{"id":205440,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00140539"},{"id":224068,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbeeae4b08c986b329869","contributors":{"authors":[{"text":"Breed, C. S.","contributorId":39809,"corporation":false,"usgs":true,"family":"Breed","given":"C.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":369945,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCauley, J.F.","contributorId":26310,"corporation":false,"usgs":true,"family":"McCauley","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":369944,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":12057,"text":"ofr86359 - 1986 - Geochemical data for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate from the South Sierra Wilderness and the South Sierra Roadless Area, southern Sierra Nevada, California","interactions":[],"lastModifiedDate":"2023-03-23T19:41:33.568417","indexId":"ofr86359","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"86-359","title":"Geochemical data for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate from the South Sierra Wilderness and the South Sierra Roadless Area, southern Sierra Nevada, California","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr86359","usgsCitation":"Diggles, M.F., Detra, D., Tucker, R.E., and Romine, K.A., 1986, Geochemical data for samples of rock, stream sediment, and nonmagnetic heavy-mineral concentrate from the South Sierra Wilderness and the South Sierra Roadless Area, southern Sierra Nevada, California: U.S. Geological Survey Open-File Report 86-359, Report: 104 p.; 1 Plate: 26.12 x 31.36 inches, https://doi.org/10.3133/ofr86359.","productDescription":"Report: 104 p.; 1 Plate: 26.12 x 31.36 inches","costCenters":[],"links":[{"id":414650,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_17014.htm","linkFileType":{"id":5,"text":"html"}},{"id":145796,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1986/0359/report-thumb.jpg"},{"id":40070,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0359/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":40071,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1986/0359/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"South Sierra Roadless Area, South Sierra Wilderness","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.282,\n 36.313\n ],\n [\n -118.282,\n 36\n ],\n [\n -118,\n 36\n ],\n [\n -118,\n 36.313\n ],\n [\n -118.282,\n 36.313\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae442","contributors":{"authors":[{"text":"Diggles, M. F.","contributorId":39356,"corporation":false,"usgs":true,"family":"Diggles","given":"M.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":164874,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Detra, D.E.","contributorId":72358,"corporation":false,"usgs":true,"family":"Detra","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":164876,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Tucker, R. E.","contributorId":50520,"corporation":false,"usgs":true,"family":"Tucker","given":"R.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":164875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Romine, K. A.","contributorId":33327,"corporation":false,"usgs":true,"family":"Romine","given":"K.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":164873,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70140585,"text":"70140585 - 1986 - Processing techniques for the production of an experimental computer-generated shaded-relief map","interactions":[],"lastModifiedDate":"2017-01-18T14:40:28","indexId":"70140585","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":709,"text":"American Cartographer","active":true,"publicationSubtype":{"id":10}},"title":"Processing techniques for the production of an experimental computer-generated shaded-relief map","docAbstract":"An experimental computer-generated shaded-relief map of a topographic quadrangle of Nome, Alaska, at 1:1,000,000 scale was created to demonstrate current capabilities of map production. This paper describes the techniques used to produce the map product.
\nThe data consisted of forty-eight 1° by 1° blocks of resampled digital elevation model (DEM) data. These data were digitally mosaicked and assigned colors based on intervals of elevation values. The color-coded data set was then used to create a shaded-relief image that was photographically composited with cartographic line information to produce a shaded-relief map. The majority of the processing was completed at the National Mapping Division EROS Data Center in Sioux Falls, South Dakota.
","language":"English","publisher":"Taylor & Francis","doi":"10.1559/152304086783900149","usgsCitation":"Judd, D.D., 1986, Processing techniques for the production of an experimental computer-generated shaded-relief map: American Cartographer, v. 13, no. 1, p. 72-79, https://doi.org/10.1559/152304086783900149.","productDescription":"8 p.","startPage":"72","endPage":"79","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":297866,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"scale":"1000000","country":"United States","state":"Alaska","city":"Nome","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -165.50628662109375,\n 64.48344424608204\n ],\n [\n -165.50628662109375,\n 64.57085734168491\n ],\n [\n -165.31402587890625,\n 64.57085734168491\n ],\n [\n -165.31402587890625,\n 64.48344424608204\n ],\n [\n -165.50628662109375,\n 64.48344424608204\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"13","issue":"1","noUsgsAuthors":false,"publicationDate":"2013-03-14","publicationStatus":"PW","scienceBaseUri":"54dd2c2de4b08de9379b368e","contributors":{"authors":[{"text":"Judd, Damon D.","contributorId":139143,"corporation":false,"usgs":false,"family":"Judd","given":"Damon","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":540197,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70186152,"text":"70186152 - 1986 - Application of the Flory-Huggins theory to the solubility of solids in glyceryl trioleate","interactions":[],"lastModifiedDate":"2020-01-18T11:13:37","indexId":"70186152","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":5353,"text":"Journal of the Chemical Society, Faraday Transactions I","active":true,"publicationSubtype":{"id":10}},"title":"Application of the Flory-Huggins theory to the solubility of solids in glyceryl trioleate","docAbstract":"The conventional thermodynamic deviation for ideal solid–liquid solubilities is modified by substituting the Flory–Huggins model for Raoult's law. A comparison of published data for eleven solides in glyceryl trioleate with the predictions of the conventional and modified equations shows that the significantly higher athermal solubilities from the modified equation are in much better agreement with the experimental data. This suggests that discrepancies between the data and the predictions of the conventional model for ideal systems result from the inappropriate use of Raoult's law for systems with significant solute–solvent size disparity rather than from specific interactions.
The Floridan aquifer system of the Southeastern United States is comprised of a thick sequence of carbonate rocks that are mostly of Paleocene to early Miocene age and that are hydraulically connected in varying degrees. The aquifer system consists of a single vertically continuous permeable unit updip and of two major permeable zones (the Upper and Lower Floridan aquifers) separated by one of seven middle confining units downdip. Neither the boundaries of the aquifer system or of its component high- and low-permeability zones necessarily conform to either formation boundaries or time-stratigraphic breaks. The rocks that make up the Floridan aquifer system, its upper and lower confining units, and a surficial aquifer have been separated into several chronostratigraphic units. The external and internal geometry of these stratigraphic units is presented on a series of structure contour and isopach maps and by a series of geohydrologic cross sections and a fence diagram. Paleocene through middle Eocene units consist of an updip clastic facies and a downdip carbonate bank facies, that extends progressively farther north and east in progressively younger units. Upper Eocene and Oligocene strata are predominantly carbonate rocks throughout the study area. Miocene and younger strata are mostly clastic rocks. Subsurface data show that some modifications in current stratigraphic nomenclature are necessary. First, the middle Eocene Lake City Limestone cannot be distinguished lithologically or faunally from the overlying middle Eocene Avon Park 'Limestone.' Accordingly, it is proposed that the term Lake City be abandoned and the term Avon Park Formation be applied to the entire middle Eocene carbonate section of peninsular Florida and southeastern Georgia. A reference well section in Levy County, Fla., is proposed for the expanded Avon Park Formation. The Avon Park is called a 'formation' more properly than a 'limestone' because the unit contains rock types other than limestone. Second, like the Avon Park, the lower Eocene Oldsmar and Paleocene Cedar Keys 'Limestones' of peninsular Florida practically everywhere contain rock types other than limestone. It is therefore proposed that these units be referred to more accurately as Oldsmar Formation and Cedar Keys Formation. The uppermost hydrologic unit in the study area is a surficial aquifer that can be divided into (1) a fluvial sand-and-gravel aquifer in southwestern Alabama and westernmost panhandle Florida, (2) limestone and sandy limestone of the Biscayne aquifer in southeastern peninsular Florida, and (3) a thin blanket of terrace and fluvial sands elsewhere. The surficial aquifer is underlain by a thick sequence of fine clastic rocks and low-permeability carbonate rocks, most of which are part of the middle Miocene Hawthorn Formation and all of which form the upper confining unit of the Floridan aquifer system. In places, the upper confining unit has been removed by erosion or is breached by sinkholes. Water in the Floridan aquifer system thus occurs under unconfined, semiconfined, or fully confined conditions, depending upon the presence, thickness, and integrity of the upper confining unit. Within the Floridan aquifer system, seven low permeability zones of subregional extent split the aquifer system in most places into an Upper and Lower Floridan aquifer. The Upper Floridan aquifer, which consists of all or parts of rocks of Oligocene age, late Eocene age, and the upper half of rocks of middle Eocene age, is highly permeable. The middle confining units that underlie the Upper Floridan are mostly of middle Eocene age but may be as young as Oligocene or as old as early Eocene. Where no middle confining unit exists, the entire aquifer system is comprised of permeable rocks and for hydrologic discussions is treated as the Upper Floridan aquifer.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/pp1403B","usgsCitation":"Hydrogeologic framework of the Floridan aquifer system in Florida and in parts of Georgia, Alabama, and South Carolina; 1986; PP; 1403-B; Miller, James A.","productDescription":"Report: viii, 91 p.; 34 Plates: 53.53 x 30.58 inches or smaller","numberOfPages":"91","costCenters":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"links":[{"id":420161,"rank":36,"type":{"id":36,"text":"NGMDB Index 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U.S. Geological Survey
3321 College Avenue
Davie, FL 33314
No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr8647","usgsCitation":"Murphy, J., and Luetgert, J., 1986, Data report for the Maine-Quebec cross-strike seismic-refraction profile: U.S. Geological Survey Open-File Report 86-47, Report: 71 p.; 15 Plates: 42.00 x 23.00 inches or smaller, https://doi.org/10.3133/ofr8647.","productDescription":"Report: 71 p.; 15 Plates: 42.00 x 23.00 inches or smaller","costCenters":[],"links":[{"id":44037,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1986/0047/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21192,"rank":15,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-13.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21191,"rank":14,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-12.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21190,"rank":13,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-11.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":147782,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1986/0047/report-thumb.jpg"},{"id":21180,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-01.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21181,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-02.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21182,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-03.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21183,"rank":6,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-04.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21184,"rank":7,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-05.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21185,"rank":8,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-06.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21186,"rank":9,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-07.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21187,"rank":10,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-08.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21188,"rank":11,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-09.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21189,"rank":12,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-10.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21193,"rank":16,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-14.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":21194,"rank":17,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/1986/0047/plate-15.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":416522,"rank":18,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_43484.htm","linkFileType":{"id":5,"text":"html"}}],"country":"Canada, United States","state":"Maine, Quebec","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -68.5,\n 44\n ],\n [\n -68.5,\n 46.25\n ],\n [\n -71.5,\n 46.25\n ],\n [\n -71.5,\n 44\n ],\n [\n -68.5,\n 44\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679cb7","contributors":{"authors":[{"text":"Murphy, J.M.","contributorId":84760,"corporation":false,"usgs":true,"family":"Murphy","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":170599,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luetgert, J.H.","contributorId":69993,"corporation":false,"usgs":true,"family":"Luetgert","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":170598,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014491,"text":"70014491 - 1986 - Applications of Landsat data and the data base approach","interactions":[],"lastModifiedDate":"2017-01-18T14:38:46","indexId":"70014491","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Applications of Landsat data and the data base approach","docAbstract":"A generalized methodology for applying digital Landsat data to resource inventory and assessment tasks is currently being used by several bureaux and agencies within the US Department of the Interior. The methodology includes definition of project objectives and output, identification of source materials, construction of the digital data base, performance of computer-assisted analyses, and generation of output. The USGS, Bureau of Land Management, US Fish and Wildlife Service, Bureau of Indian Affairs, Bureau of Reclamation, and National Park Service have used this generalized methodology to assemble comprehensive digital data bases for resource management. Advanced information processing techniques have been applied to these data bases for making regional environmental surveys on millions of acres of public lands at costs ranging from $0.01 to $0.08 an acre.-Author","language":"English","usgsCitation":"Lauer, D.T., 1986, Applications of Landsat data and the data base approach: Photogrammetric Engineering and Remote Sensing, v. 52, no. 8, p. 1193-1199.","productDescription":"7 p.","startPage":"1193","endPage":"1199","numberOfPages":"7","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":225318,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ecc4e4b0c8380cd4948d","contributors":{"authors":[{"text":"Lauer, D. T.","contributorId":47907,"corporation":false,"usgs":true,"family":"Lauer","given":"D.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":368515,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014639,"text":"70014639 - 1986 - ANALYSIS OF THE U. S. GEOLOGICAL SURVEY STREAMGAGING NETWORK.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:34","indexId":"70014639","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"ANALYSIS OF THE U. S. GEOLOGICAL SURVEY STREAMGAGING NETWORK.","docAbstract":"This paper summarizes the results from the first 3 years of a 5-year cost-effectiveness study of the U. S. Geological Survey streamgaging network. The objective of the study is to define and document the most cost-effective means of furnishing streamflow information. In the first step of this study, data uses were identified for 3,493 continuous-record stations currently being operated in 32 States. In the second step, evaluation of alternative methods of providing streamflow information, flow-routing models, and regression models were developed for estimating daily flows at 251 stations of the 3,493 stations analyzed. In the third step of the analysis, relationships were developed between the accuracy of the streamflow records and the operating budget. The existing streamgaging networks in four Districts were further analyzed to determine the impacts that satellite telemetry would have on the cost effectiveness. Satellite telemetry was not found to be cost effective on the basis of hydrologic-data collection alone, given present cost of equipment and operation.","conferenceTitle":"Preprinted Proceedings of the 4th International Conference on River Basin Management.","conferenceLocation":"Sao Paolo, Braz","language":"English","publisher":"Int Assoc on Water Pollution Research & Control","publisherLocation":"London, Engl","usgsCitation":"Scott, A.G., 1986, ANALYSIS OF THE U. S. GEOLOGICAL SURVEY STREAMGAGING NETWORK., Preprinted Proceedings of the 4th International Conference on River Basin Management., Sao Paolo, Braz, p. 33-44.","startPage":"33","endPage":"44","numberOfPages":"12","costCenters":[],"links":[{"id":225393,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e62de4b0c8380cd47201","contributors":{"authors":[{"text":"Scott, Arthur G.","contributorId":81885,"corporation":false,"usgs":true,"family":"Scott","given":"Arthur","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":368882,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014636,"text":"70014636 - 1986 - The South Fork detachment fault, Park County, Wyoming: discussion and reply ( USA).","interactions":[],"lastModifiedDate":"2012-03-12T17:19:34","indexId":"70014636","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1335,"text":"Contributions to Geology - University of Wyoming, Laramie","active":true,"publicationSubtype":{"id":10}},"title":"The South Fork detachment fault, Park County, Wyoming: discussion and reply ( USA).","docAbstract":"Blackstone (1985) published an interpretation of South form detachment fault and related features. His interpretation of the area between Castle and Hardpan transverse faults is identical to mine of 1941. Subsequent detailed mapping has shown that the structure between the transverse faults is more complicated than originally envisioned and resurrected by Blackstone. The present paper describes and discusses geologic features that are the basis for my interpretations; also discussed are differences between my interpretations and those of Blackstone. Most data are shown on the geologic map of the Wapiti Quadrangle (Pierce and Nelson, 1969). Blackstone's 'allochthonous' masses are part of the South Form fault. Occurrences of Sundance Formation, which he interpreted as the upper plate of his 'North Fork fault', are related to Heart Mountain fault. Volcaniclastic rocks south of Jim Mountain mapped as Aycross Formation by Torres and Gingerich may be Cathedral Cliffs Formation, emplaced by movement of the Heart Mountain fault. - Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Contributions to Geology - University of Wyoming, Laramie","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Pierce, W.G., 1986, The South Fork detachment fault, Park County, Wyoming: discussion and reply ( USA).: Contributions to Geology - University of Wyoming, Laramie, v. 24, no. 1, p. 77-90.","startPage":"77","endPage":"90","numberOfPages":"14","costCenters":[],"links":[{"id":225390,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba8f9e4b08c986b321f96","contributors":{"authors":[{"text":"Pierce, W. G.","contributorId":11267,"corporation":false,"usgs":true,"family":"Pierce","given":"W.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":368876,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014618,"text":"70014618 - 1986 - Heat capacities and thermodynamic functions for beryl, Be3Al2Si6O18, phenakite, Be2SiO4, euclase, BeAlSiO4(OH), bertrandite, Be4Si2O7(OH)2, and chrysoberyl, BeAl2O4.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:30","indexId":"70014618","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Heat capacities and thermodynamic functions for beryl, Be3Al2Si6O18, phenakite, Be2SiO4, euclase, BeAlSiO4(OH), bertrandite, Be4Si2O7(OH)2, and chrysoberyl, BeAl2O4.","docAbstract":"The heat capacities of beryl, phenakite, euclase and bertrandite have been measured between approx 5 and 800 K by combined quasi-adiabatic cryogenic calorimetry and differential scanning calorimetry. The heat capacities of chrysoberyl have been measured from 340 to 800 K. The resulting data have been combined with solution and phase-equilibrium experimental data and simultaneously adjusted using the programme PHAS20 to provide an internally consistent set of thermodynamic properties for several important beryllium phases. The experimental heat capacities and tables of derived thermodynamic properties are presented.-J.A.Z.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Hemingway, B.S., Barton, M., Robie, R.A., and Haselton, H., 1986, Heat capacities and thermodynamic functions for beryl, Be3Al2Si6O18, phenakite, Be2SiO4, euclase, BeAlSiO4(OH), bertrandite, Be4Si2O7(OH)2, and chrysoberyl, BeAl2O4.: American Mineralogist, v. 71, no. 3-4, p. 557-568.","startPage":"557","endPage":"568","numberOfPages":"12","costCenters":[],"links":[{"id":226166,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2fe9e4b0c8380cd5d1db","contributors":{"authors":[{"text":"Hemingway, B. S.","contributorId":7268,"corporation":false,"usgs":true,"family":"Hemingway","given":"B.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":368833,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barton, M.D.","contributorId":11341,"corporation":false,"usgs":true,"family":"Barton","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":368834,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Robie, R. A.","contributorId":71237,"corporation":false,"usgs":true,"family":"Robie","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":368835,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Haselton, H.T. Jr.","contributorId":83520,"corporation":false,"usgs":true,"family":"Haselton","given":"H.T.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":368836,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70014617,"text":"70014617 - 1986 - Interpretation of broad-band seismograms from central Aleutian earthquakes.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:30","indexId":"70014617","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":781,"text":"Annales Geophysicae, Series B","active":true,"publicationSubtype":{"id":10}},"title":"Interpretation of broad-band seismograms from central Aleutian earthquakes.","docAbstract":"Broad-band Graefenberg (GRF) array data from 11 moderate-size shallow-depth earthquakes in the central Aleutians have been used to study the effects of focal depth and structure across the arc on observed waveforms. The theoretical results, primarily phase arrival times, suggest that arc structure is responsible for many of the complicated features seen on vertical-component summation seismograms simulated with different instrument responses from the broad-band array data. Except for one trench event, all the earthquakes studied occurred along the plate interface zone, had similar thrust focal mechanisms, and differed only in depth. As a result, the effects of depth phases on observed GRF waveforms across the arc were found to be systematically related to the increase in focal depth along the shallow-dipping seismic zone. -from Authors","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Annales Geophysicae, Series B","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Engdahl, E., and Kind, R., 1986, Interpretation of broad-band seismograms from central Aleutian earthquakes.: Annales Geophysicae, Series B, v. 4 B, no. 3, p. 233-240.","startPage":"233","endPage":"240","numberOfPages":"8","costCenters":[],"links":[{"id":226165,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"4 B","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3d6ae4b0c8380cd63556","contributors":{"authors":[{"text":"Engdahl, E.R.","contributorId":22906,"corporation":false,"usgs":true,"family":"Engdahl","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":368831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kind, R.","contributorId":63545,"corporation":false,"usgs":true,"family":"Kind","given":"R.","email":"","affiliations":[],"preferred":false,"id":368832,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014616,"text":"70014616 - 1986 - Platinum-group element resources in podiform chromitites from California and Oregon","interactions":[],"lastModifiedDate":"2024-01-05T17:55:33.228454","indexId":"70014616","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Platinum-group element resources in podiform chromitites from California and Oregon","docAbstract":"Rock samples from about 280 podiform chromite deposits in California and Oregon were analyzed for Pt, Pd, Rh, and Ir by fire assay-atomic absorption and spectrographic techniques to estimate by-product platinum-group element potential of chromite mining. These deposits include ophiolites from the Sierra Nevada, Klamath Mountains, Coast Ranges, and the Canyon Mountain Complex; the deposits vary from Paleozoic to Mesozoic age and vary in size, shape, texture, and degree of metamorphism. The maximum platinum-group element contents (in ppm) measured for chromitites are: Pt, 2.53; Pd, 0.2; Rh, 0.14; Ru, 4.93; and Ir, 2.93.Correlations between Pt and Rh (0.60), Rh and Ir (0.64), Rh and Ru (0.71), and Ir and Ru (0.85) are significant at the 1 percent level. Relatively small but significant differences in platinum-group element content exist between geologic terranes. Chromite production from California and Oregon amounts to about 692,000 metric tons (1914-1985); the mean contained platinum-group element amounts in troy ounces are: Pt, 850; Pd, 100; Rh, 260; Ru, 4200; and Ir, 1,700, using estimated grades. Previous investigators have suggested that relatively few samples can represent the platinum-group element content of a podiform chromite deposit; therefore, these analyses are assumed to approximate \"grades.\" Total world resources of platinum-group elements in podiform chromite deposits are estimated in troy ounces to be: Pt, 210,000; Pd, 25,000; Rh, 64,000; Ru, 1,000,000; and Ir, 420,000.
Bed shear stress was estimated using wave and current measurements obtained with the GEOPROBE bottom-tripod system during resuspension events in Norton Sound, Alaska, and on the northern California shelf. The boundary-layer model of Grant and Madsen (1979, Journal of Geophysical Research, 84, 1797-1808) was used to compute the bed shear stress under combined wave-generated and quasi-steady currents. Resuspension events were identified by sudden, large increases in light scattering at 1.9 m above the sea floor. The shear-stress values were used to compute the Shields parameter (??). The results for Norton Sound are in excellent agreement with the Shields threshold criterion; the data for the California shelf plot somewhat above the Shields threshold curve, though generally within the scatter envelope. Although the surface sediments in each area contain substantial fine-grained fractions (mean diameters were 0.007 cm in Norton Sound and 0.002 cm on the California shelf), the results do not indicate significant cohesion, because the sediment was entrained at bed shear-stress values close to those predicted by the modified Shields curve for cohesionless fine-grained particles. We suspect that frequent wave stirring and observed plowing of the surface sediment by benthonic animals maintain a high water content and contribute to the ease with which these materials are resuspended.
","language":"English","publisher":"Elsevier","doi":"10.1016/0278-4343(86)90081-6","issn":"02784343","usgsCitation":"Drake, D., and Cacchione, D., 1986, Field observations of bed shear stress and sediment resuspension on continental shelves, Alaska and California: Continental Shelf Research, v. 6, no. 3, p. 415-429, https://doi.org/10.1016/0278-4343(86)90081-6.","productDescription":"15 p.","startPage":"415","endPage":"429","numberOfPages":"15","costCenters":[],"links":[{"id":226162,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska, California","volume":"6","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0fcbe4b0c8380cd53a07","contributors":{"authors":[{"text":"Drake, D.E.","contributorId":48150,"corporation":false,"usgs":true,"family":"Drake","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":368654,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cacchione, D.A.","contributorId":65448,"corporation":false,"usgs":true,"family":"Cacchione","given":"D.A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":368655,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014694,"text":"70014694 - 1986 - Upper mantle structure from teleseismic P wave arrivals in Washington and northern Oregon","interactions":[],"lastModifiedDate":"2024-06-25T14:35:05.341291","indexId":"70014694","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Upper mantle structure from teleseismic P wave arrivals in Washington and northern Oregon","docAbstract":"Teleseismic P wave travel time residuals are used to detect lateral velocity heterogeneities in the upper mantle beneath Washington and northern Oregon. The results of an inversion for three-dimensional velocity variations resolves an east dipping high-velocity zone that we interpret as the subducting Juan de Fuca plate. The plate is characterized by 3–8% higher velocities than those in the surrounding upper mantle. Inversion of the travel time data and ray trace modeling indicate that the plate extends to a depth of 200–300 km. The plate dips at a moderate angle of 45° to the east-northeast beneath the central Washington Cascade Range north of Mount Rainier, with 5% faster velocities than the surrounding upper mantle. Beneath the North Cascade Range of Washington, the plate strikes to the northwest and has 6–8% faster velocities than the upper mantle to the west. South of 47°N, beneath the Cascade Range in southern Washington and northern Oregon, the plate dips steeply to the east and has 3–4% faster velocities than the surrounding upper mantle. Based on changes in the geometry and velocity structure of the subducted Juan de Fuca plate east of about 123°W, we propose that the subducted slab is segmented into three sections beneath Washington and northern Oregon.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB091iB02p02077","issn":"01480227","usgsCitation":"Michaelson, C.A., and Weaver, C., 1986, Upper mantle structure from teleseismic P wave arrivals in Washington and northern Oregon: Journal of Geophysical Research Solid Earth, v. 91, no. B2, p. 2077-2094, https://doi.org/10.1029/JB091iB02p02077.","productDescription":"18 p.","startPage":"2077","endPage":"2094","numberOfPages":"18","costCenters":[],"links":[{"id":225331,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"B2","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bbd5ae4b08c986b328fa5","contributors":{"authors":[{"text":"Michaelson, C. A.","contributorId":50900,"corporation":false,"usgs":true,"family":"Michaelson","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":369018,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Weaver, C.S.","contributorId":57874,"corporation":false,"usgs":true,"family":"Weaver","given":"C.S.","email":"","affiliations":[],"preferred":false,"id":369019,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014579,"text":"70014579 - 1986 - Pre-Wisconsin glacial stratigraphy of the central plains region in Iowa, Nebraska, Kansas, and Missouri","interactions":[],"lastModifiedDate":"2012-03-12T17:19:33","indexId":"70014579","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Pre-Wisconsin glacial stratigraphy of the central plains region in Iowa, Nebraska, Kansas, and Missouri","docAbstract":"Recent investigations have documented the presence of several tills and interglacial paleosols that were not recognized in the simple Kansan-Aftonian-Nebraskan stratigraphic sequence. Also, the single 'Pearlette ash' recognized by early workers now is known to be three different Pearlette family ash beds of greatly contrasting ages. The complexity of the stratigraphy, as it is currently understood, and the miscorrelations of early work necessitate abandonment of the archaic terms Kansan, Aftonian, and Nebraskan in stratigraphic terminology. Continued use of those terms will only promote confusion of stratigraphic nomenclature and erroneous correlations of stratigraphic units. The limited chronometric control available within the early and middle Pleistocene stratigraphic sequence is provided directly by dating or by correlation of buried soils and volcanic ash beds and it is provided inferentially by interpretation of magnetic polarity data. These controls provide, at best, a general time framework to begin a new synthesis of the Quaternary history of the region. New methods of dating are needed to facilitate long-distance correlation of early and middle Pleistocene deposits. ?? 1986.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Science Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"02773791","usgsCitation":"Hallberg, G., 1986, Pre-Wisconsin glacial stratigraphy of the central plains region in Iowa, Nebraska, Kansas, and Missouri: Quaternary Science Reviews, v. 5, no. C, p. 11-15.","startPage":"11","endPage":"15","numberOfPages":"5","costCenters":[],"links":[{"id":225519,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"C","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a80d7e4b0c8380cd7b21a","contributors":{"authors":[{"text":"Hallberg, G.R.","contributorId":67216,"corporation":false,"usgs":true,"family":"Hallberg","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":368718,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70014469,"text":"70014469 - 1986 - Regional method to assess offshore slope stability.","interactions":[],"lastModifiedDate":"2013-03-01T11:05:57","indexId":"70014469","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2326,"text":"Journal of Geotechnical Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Regional method to assess offshore slope stability.","docAbstract":"The slope stability of some offshore environments can be evaluated by using only conventional acoustic profiling and short-core sampling, followed by laboratory consolidation and strength testing. The test results are synthesized by using normalized-parameter techniques. The normalized data are then used to calculate the critical earthquake acceleration factors or the wave heights needed to initiate failure. These process-related parameters provide a quantitative measure of the relative stability for locations from which short cores were obtained. The method is most applicable to offshore environments of gentle relief and simple subsurface structure and is not considered a substitute for subsequent site-specific analysis. -from ASCE Publications Information","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geotechnical Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"ASCE","doi":"10.1061/(ASCE)0733-9410(1986)112:5(489)","usgsCitation":"Lee, H., and Edwards, B.D., 1986, Regional method to assess offshore slope stability.: Journal of Geotechnical Engineering, v. 112, no. 5, p. 489-509, https://doi.org/10.1061/(ASCE)0733-9410(1986)112:5(489).","startPage":"489","endPage":"509","numberOfPages":"21","costCenters":[],"links":[{"id":226026,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":268624,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)0733-9410(1986)112:5(489)"}],"volume":"112","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"50e4a53ae4b0e8fec6cdbda1","contributors":{"authors":[{"text":"Lee, H.J.","contributorId":96693,"corporation":false,"usgs":true,"family":"Lee","given":"H.J.","email":"","affiliations":[],"preferred":false,"id":368470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Edwards, B. D.","contributorId":27056,"corporation":false,"usgs":true,"family":"Edwards","given":"B.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":368469,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":29212,"text":"wri854013 - 1986 - Ground-water resource assessment of the Montauk area, Long Island, New York","interactions":[],"lastModifiedDate":"2023-04-11T21:03:03.221404","indexId":"wri854013","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"85-4013","title":"Ground-water resource assessment of the Montauk area, Long Island, New York","docAbstract":"The water resources of the Montauk area were investigated from October 1980 through September 1983 to assess the availability of fresh groundwater. The principal aquifer, which consists of fine- to coarse-grained stratified glacial drift, is the sole source of freshwater. The freshwater/saltwater interface lies as much as 150 ft below sea level, but the till unit and the marine-clay unit limit the thickness of the zone from which freshwater may easily be withdrawn to < 100 ft in most places. Precipitation, the sole source of freshwater in the Montauk area , averages about 42 in/yr. Direct runoff is approximately 1 in/yr, and evapotranspiration about 20 in/yr; the remaining 21 inches is the net recharge to the principal aquifer. The horizontal hydraulic conductivity, as calculated from specific-capacity data, ranges from 130 to 350 ft/d. Analysis of an aquifer pumping test indicates that horizontal hydraulic conductivity of the principal aquifer is approximately 275 ft/d and the vertical hydraulic conductivity is approximately 90 ft/d; the storage coefficient ranges from 1.1 x .001 to 2.2 x .001. A numerical two-dimensional flow model that simulates the areal flow of fresh- and saltwater was developed to evaluate the effects of the present level of groundwater development and the potential effects of increased future withdrawals. Model results indicate that the principal aquifer is capable of producing several times more than the 0.6 mil gal/d now being withdrawn for public supply. Examination of well design and pumping rates, and analysis of analog-model studies of saltwater upconing to wells, indicate that the peak pumping rate of public supply wells exceeds the limit necessary to avoid contamination from saltwater. With proper well design and distribution of pumping stress, the aquifer system would be capable of supplying enough water to meet the needs of the population projected through 1995.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri854013","usgsCitation":"Prince, K.R., 1986, Ground-water resource assessment of the Montauk area, Long Island, New York: U.S. Geological Survey Water-Resources Investigations Report 85-4013, Report: viii, 103 p.; 2 Plates: 31.95 x 14.55 inches and 34.29 x 21.12 inches, https://doi.org/10.3133/wri854013.","productDescription":"Report: viii, 103 p.; 2 Plates: 31.95 x 14.55 inches and 34.29 x 21.12 inches","costCenters":[],"links":[{"id":415605,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_36208.htm","linkFileType":{"id":5,"text":"html"}},{"id":58069,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1985/4013/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":58070,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1985/4013/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":58068,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1985/4013/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":124915,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1985/4013/report-thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Long Island, Montauk area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -71.854,\n 41.083\n ],\n [\n -72.042,\n 41.083\n ],\n [\n -72.042,\n 41\n ],\n [\n -71.854,\n 41\n ],\n [\n -71.854,\n 41.083\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa7e4b07f02db666fee","contributors":{"authors":[{"text":"Prince, K. R.","contributorId":7328,"corporation":false,"usgs":true,"family":"Prince","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":201156,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015165,"text":"70015165 - 1986 - Limitations in the use of commercial humic acids in water and soil research","interactions":[],"lastModifiedDate":"2020-01-18T12:08:43","indexId":"70015165","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Limitations in the use of commercial humic acids in water and soil research","docAbstract":"Seven samples of commercial \"humic acids\", purchased from five different suppliers, were studied, and their characteristics were compared with humic and fulvic acids isolated from streams, soils, peat, leonardite, and a dopplerite sample. Cross-polarization and magic-angle spinning 13C NMR spectroscopy clearly shows pronounced differences between the commercial materials and all other samples. Elemental and infrared spectroscopic data do not show such clear-cut differences but can be used as supportive evidence, with the 13C NMR data, to substantiate the above distinctions. As a result of these differences and due to the general lack of information relating to the source, method of isolation, or other pretreatment of the commercial materials, these commercial products are not considered to be appropriate for use as analogues of true soil and water humic substances, in experiments designed to evaluate the nature and reactivity of humic substances in natural waters and soils.","language":"English","publisher":"ACS","doi":"10.1021/es00151a009","issn":"0013936X","usgsCitation":"Malcolm, R., and MacCarthy, P., 1986, Limitations in the use of commercial humic acids in water and soil research: Environmental Science & Technology, v. 20, no. 9, p. 904-911, https://doi.org/10.1021/es00151a009.","productDescription":"8 p.","startPage":"904","endPage":"911","numberOfPages":"8","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224020,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"9","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505a4788e4b0c8380cd678b6","contributors":{"authors":[{"text":"Malcolm, Ronald L.","contributorId":46075,"corporation":false,"usgs":true,"family":"Malcolm","given":"Ronald L.","affiliations":[],"preferred":false,"id":370230,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"MacCarthy, P.","contributorId":88081,"corporation":false,"usgs":true,"family":"MacCarthy","given":"P.","email":"","affiliations":[],"preferred":false,"id":370231,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014548,"text":"70014548 - 1986 - Mass storage estimates for the digital mapping era.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:30","indexId":"70014548","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Mass storage estimates for the digital mapping era.","docAbstract":"Proponents of the digital era recognize that a break-through in mass storage technology may be required to attain a reasonable degree of computerization of the cartographic mapping and data management process. This paper provides the rationale for estimating that about 1014 bits of digital mass storage are needed for developing a digital 1:24 000-scale topographic data base of the US. Also, it will discuss the optical disk as a leading candidate for handling the mass storage dilemma.-from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Light, D., 1986, Mass storage estimates for the digital mapping era.: Photogrammetric Engineering and Remote Sensing, v. 52, no. 3, p. 419-425.","startPage":"419","endPage":"425","numberOfPages":"7","costCenters":[],"links":[{"id":226094,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5257e4b0c8380cd6c337","contributors":{"authors":[{"text":"Light, D.L.","contributorId":57606,"corporation":false,"usgs":true,"family":"Light","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":368650,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}