{"pageNumber":"1500","pageRowStart":"37475","pageSize":"25","recordCount":40837,"records":[{"id":70206859,"text":"70206859 - 1984 - Late Devonian icriodontid biofacies models and alternate shallow-water conodont zonation","interactions":[],"lastModifiedDate":"2020-05-26T14:44:08.464546","indexId":"70206859","displayToPublicDate":"1984-11-25T12:58:08","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1727,"text":"GSA Special Papers","active":true,"publicationSubtype":{"id":10}},"title":"Late Devonian icriodontid biofacies models and alternate shallow-water conodont zonation","docAbstract":"Recognition of differences in the habitats, apparatuses, and ranges of Late Devonian Icriodus and Pelekysgnathus permits refinement of their biofacies interpretations and construction of an alternate icriodontid zonation. Icriodus is a euphotic genus that predominated in most environments during the early Late Devonian (Frasnian) but died out during the early Famennian. Its apparatus consists of platform (I) elements; four larger, acodiniform cones; and two smaller, oneotodiform, scolopodiform, or drepanodiform cones. Pelekysgnathus is a shallow-water genus, which shortly after Icriodus died out, produced somewhat deeper water taxa with triple-rowed I elements that are homeomorphs of Icriodus I elements. Apparatuses for both single-rowed taxa (Pelekysgnathus) and triple-rowed taxa (“Icriodus”) contain oistodiform cones, apparently in place of one or more of the acodiniform cones. Biofacies models for southern Belgium and Utah show that Icriodus lived not only in nearshore environments but ranged into the pelagic palmatolepid-bispathodid (I) and palmatolepid-polygnathid (II) biofacies. Younger “Icriodus”, however, inhabited mainly the deeper subtidal polygnathid-“icriodid” (III) and polygnathid-pelekysgnathid (IV) biofacies. Pelekysgnathus inhabited mainly the polygnathid-pelekysgnathid biofacies and ranged shoreward into the shallow-subtidal clydagnathid (V), scaphignathid (VI), patrognathid (VII), and pandorinellinid (VIII) biofacies, but has not yet been found in the hypersaline antognathid (IX) biofacies (new).
The Late Devonian, subdivided by 28 mainly Palmatolepis-based zones from the Lower (Polygnathus) asymmetricus to Upper (Siphonodella) praesulcata Zones in the standard conodont zonation for pelagic biofacies, can be subdivided into nine icriodontid-based zones in nearshore biofacies. In ascending order, these are the Icriodus symmetricus; Lower and Upper Pelekysgnathus planus; Lower, Middle, and Upper “I.” cornutus; and Lower, Middle, and Upper “I.” costatus Zones. Taxonomic revisions involve mainly relegating several previously described species to subspecies and morphotypes and raising some subspecies to species. Two new biostratigraphically significant subspecies, I. iowaensis ancylus n. subsp. and I. alternatus helmsi n. subsp., are recognized to occur both in the western United States and in Europe. Pelekysgnathus brevis n. sp. is described as new on the basis of a Middle Devonian occurrence in Utah.
","language":"English","publisher":"GSA","doi":"10.1130/SPE196-p143","usgsCitation":"Sandberg, C., and Dreesen, R., 1984, Late Devonian icriodontid biofacies models and alternate shallow-water conodont zonation: GSA Special Papers, v. 196, p. 143-178, https://doi.org/10.1130/SPE196-p143.","productDescription":"36 p.","startPage":"143","endPage":"178","costCenters":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":369556,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Colorado, Idaho, New Mexico, Nevada, Utah","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116.71874999999999,\n 41.0130657870063\n ],\n [\n -118.0810546875,\n 38.839707613545144\n ],\n [\n -117.42187500000001,\n 38.37611542403604\n ],\n [\n -115.94970703125,\n 40.863679665481676\n ],\n [\n -116.71874999999999,\n 41.0130657870063\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.4228515625,\n 39.027718840211605\n ],\n [\n -115.400390625,\n 37.64903402157866\n ],\n [\n -115.00488281250001,\n 37.26530995561875\n ],\n [\n -113.115234375,\n 38.496593518947584\n ],\n [\n -113.4228515625,\n 39.027718840211605\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -113.4228515625,\n 37.70120736474139\n ],\n [\n -113.00537109375,\n 35.65729624809628\n ],\n [\n -111.26953125,\n 35.67514743608467\n ],\n [\n -110.72021484375,\n 37.43997405227057\n ],\n [\n -107.46826171874999,\n 35.40696093270201\n ],\n [\n -105.57861328125,\n 38.03078569382294\n ],\n [\n -111.46728515624999,\n 40.64730356252251\n ],\n [\n -111.884765625,\n 42.61779143282346\n ],\n [\n -113.04931640625,\n 42.32606244456202\n ],\n [\n -112.43408203124999,\n 38.976492485539396\n ],\n [\n -113.4228515625,\n 37.70120736474139\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"196","noUsgsAuthors":false,"publicationDate":"1984-01-01","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":776085,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dreesen, Roland","contributorId":62927,"corporation":false,"usgs":true,"family":"Dreesen","given":"Roland","email":"","affiliations":[],"preferred":false,"id":776086,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70206778,"text":"70206778 - 1984 - Evaluation of a technique for simulating a compacting aquifer system in the Central Valley of California, USA","interactions":[],"lastModifiedDate":"2019-11-21T13:54:52","indexId":"70206778","displayToPublicDate":"1984-11-21T13:43:18","publicationYear":"1984","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Evaluation of a technique for simulating a compacting aquifer system in the Central Valley of California, USA","docAbstract":" Large volumes of water have been pumped from the Central Valley aquifer system since the early 1900's. Water levels in the most heavily pumped areas had declined as much as 120 m by 1970. These large water-level declines resulted in approximately 21,000 hm3 of water released by inelastic compaction of numerous compressible fine-grained deposits. The principal technique used to evaluate the aquifer system was a three-dimensional computer program that solves the basic ground-water flow equation. The program was modified to incorporate water released by inelastic compaction of the fine-grained deposits by making storage a function of hydraulic head. The computer-simulated volume of water released from inelastic compaction for the period from 1961 through 1977 was 6 percent of the estimated volume. The technique could be used in other areas where water is released as a result of inelastic compaction of fine-grained deposits.
","conferenceTitle":" Land Subsidence: Proceedings of the Third International Symposium on Land Subsidence","conferenceDate":"March 19-25, 1984","conferenceLocation":"Venice, Italy","language":"English","publisher":"IAHS Press","publisherLocation":"Wallingford, Oxfordshire","isbn":"9780947571405","usgsCitation":"Prudic, D.E., and Williamson, A.K., 1984, Evaluation of a technique for simulating a compacting aquifer system in the Central Valley of California, USA, Land Subsidence: Proceedings of the Third International Symposium on Land Subsidence, Venice, Italy, March 19-25, 1984, p. 53-63.","productDescription":"11 p.","startPage":"53","endPage":"63","costCenters":[],"links":[{"id":369397,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Central Valley of California ","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -122.06909179687501,\n 40.73893324113601\n ],\n [\n -123.277587890625,\n 40.39676430557203\n ],\n [\n -119.454345703125,\n 35.074964853989556\n ],\n [\n -118.36669921875,\n 35.62158189955968\n ],\n [\n -122.06909179687501,\n 40.73893324113601\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Prudic, David E. deprudic@usgs.gov","contributorId":3430,"corporation":false,"usgs":true,"family":"Prudic","given":"David","email":"deprudic@usgs.gov","middleInitial":"E.","affiliations":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"preferred":true,"id":775736,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williamson, Alex K.","contributorId":36543,"corporation":false,"usgs":true,"family":"Williamson","given":"Alex","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":775737,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70199558,"text":"70199558 - 1984 - Reducing relative error from the CVBEM by proper treatment of the known boundary conditions","interactions":[],"lastModifiedDate":"2018-09-20T16:19:52","indexId":"70199558","displayToPublicDate":"1984-11-01T16:19:09","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2022,"text":"International Journal for Numerical Methods in Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Reducing relative error from the CVBEM by proper treatment of the known boundary conditions","docAbstract":"By a proper treatment of the known boundary conditions of a boundary value problem, a complex variable boundary element method (CVBEM) can be used to exactly satisfy the known nodal point boundary values. In this fashion, a numerical model can be developed which generates relative error information along the problem boundary that can be used to reduce the modelling error by either an integrated measure or a maximum relative error measure.
","language":"English","doi":"10.1002/nme.1620201113","usgsCitation":"Hromadka, T., and Guymon, G.L., 1984, Reducing relative error from the CVBEM by proper treatment of the known boundary conditions: International Journal for Numerical Methods in Engineering, v. 20, no. 11, p. 2113-2120, https://doi.org/10.1002/nme.1620201113.","productDescription":"8 p.","startPage":"2113","endPage":"2120","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":357582,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","volume":"20","issue":"11","noUsgsAuthors":false,"publicationDate":"2005-06-21","publicationStatus":"PW","contributors":{"authors":[{"text":"Hromadka, T. V. II","contributorId":76464,"corporation":false,"usgs":true,"family":"Hromadka","given":"T. V.","suffix":"II","affiliations":[],"preferred":false,"id":745845,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Guymon, Gary L.","contributorId":52059,"corporation":false,"usgs":true,"family":"Guymon","given":"Gary","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":745846,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70128353,"text":"70128353 - 1984 - Runoff, sediment transport, and landform modifications near Sheffield, Illinois","interactions":[],"lastModifiedDate":"2018-03-27T14:45:18","indexId":"70128353","displayToPublicDate":"1984-10-07T15:12:00","publicationYear":"1984","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Runoff, sediment transport, and landform modifications near Sheffield, Illinois","docAbstract":"No abstract available.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Sixth Annual Department of Energy Low Level Waste Management Program Participants' Information Meeting, DOE Low Level Waste Management Program, Denver, September 11 13, 1984","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"U.S. Department of Energy","usgsCitation":"Gray, J.R., 1984, Runoff, sediment transport, and landform modifications near Sheffield, Illinois, in Sixth Annual Department of Energy Low Level Waste Management Program Participants' Information Meeting, DOE Low Level Waste Management Program, Denver, September 11 13, 1984, p. 534-544.","productDescription":"11 p.","startPage":"534","endPage":"544","costCenters":[],"links":[{"id":295075,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"543500b8e4b0a4f4b46a23cb","contributors":{"authors":[{"text":"Gray, J. R.","contributorId":46025,"corporation":false,"usgs":true,"family":"Gray","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":502920,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70013767,"text":"70013767 - 1984 - Identification of an optimal groundwater management strategy in a contaminated aquifer","interactions":[],"lastModifiedDate":"2026-04-22T17:16:16.624115","indexId":"70013767","displayToPublicDate":"1984-10-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Identification of an optimal groundwater management strategy in a contaminated aquifer","docAbstract":"A groundwater hydraulic management model is used to identify the optimal strategy for allocating limited fresh-water supplies and containing wastes in a hypothetical aquifer affected by brine contamination from surface disposal ponds. The present cost of pumping from a network of potential supply and interception wells is minimized over a five-year planning period, subject to a set of hydraulic, institutional, and legal constraints. Hydraulic constraints are formulated using linear systems theory to describe drawdown and velocity variables as linear functions of supply and interception well discharge decision variables. Successful validation of the optimal management strategy suggests that the model formulation can feasibly be applied to define management options for locally contaminated aquifer systems which are used to fulfill fresh-water demands.
","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.1984.tb04758.x","issn":"00431370","usgsCitation":"Colarullo, S., Heidari, M., and Maddock, T., 1984, Identification of an optimal groundwater management strategy in a contaminated aquifer: Journal of the American Water Resources Association, v. 20, no. 5, p. 747-760, https://doi.org/10.1111/j.1752-1688.1984.tb04758.x.","productDescription":"14 p.","startPage":"747","endPage":"760","costCenters":[],"links":[{"id":503473,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/10150/192000","text":"External Repository"},{"id":219940,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"20","issue":"5","noUsgsAuthors":false,"publicationDate":"2007-06-08","publicationStatus":"PW","scienceBaseUri":"505a3822e4b0c8380cd6145d","contributors":{"authors":[{"text":"Colarullo, S.J. 0000-0003-4504-0068","orcid":"https://orcid.org/0000-0003-4504-0068","contributorId":96104,"corporation":false,"usgs":true,"family":"Colarullo","given":"S.J.","affiliations":[],"preferred":false,"id":366825,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heidari, M.","contributorId":26430,"corporation":false,"usgs":true,"family":"Heidari","given":"M.","email":"","affiliations":[],"preferred":false,"id":366823,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Maddock, T. III","contributorId":56107,"corporation":false,"usgs":true,"family":"Maddock","given":"T.","suffix":"III","email":"","affiliations":[],"preferred":false,"id":366824,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":5221898,"text":"5221898 - 1984 - Organochlorine pesticide, polychlorobiphenyl, and mercury residues in bald eagle eggs – 1969-79 – And their relationships to shell thinning and reproduction","interactions":[],"lastModifiedDate":"2023-12-12T16:20:31.953986","indexId":"5221898","displayToPublicDate":"1984-09-01T12:19:29","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":887,"text":"Archives of Environmental Contamination and Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Organochlorine pesticide, polychlorobiphenyl, and mercury residues in bald eagle eggs – 1969-79 – And their relationships to shell thinning and reproduction","docAbstract":"Bald eagle (Haliaeetus leucocephalus) eggs were collected in 14 States in 1969–79 and analyzed for organochlorine pesticides, polychlorobiphenyls, and mercury. Moderate shell thinning occurred in eggs from several areas. Eggs from the Chesapeake Bay area contained the highest residue levels of most organochlorines. DDE was detected in all eggs; other organochlorines were detected less frequently. Mercury levels were highest in eggs from Maine. Eight contaminants were significantly negatively correlated with shell thickness or reproduction at sampled breeding areas; DDE was most closely related to these factors. Production of young was near normal at breeding areas when DDE was ⩽3 ppm (wet weight); reproductive failure approached 100% for those breeding areas where DDE in eggs was >15 ppm. Five ppm DDE was associated with 10% shell thinning. The other contaminants that were associated with these factors were also highly correlated with DDE; their impact appeared minor in relation to those of DDE.
","language":"English","publisher":"Springer","doi":"10.1007/BF01056332","usgsCitation":"Wiemeyer, S.N., Lamont, T., Bunck, C.M., Sindelar, C.R., Gramlich, F.J., Fraser, J., and Byrd, M.A., 1984, Organochlorine pesticide, polychlorobiphenyl, and mercury residues in bald eagle eggs – 1969-79 – And their relationships to shell thinning and reproduction: Archives of Environmental Contamination and Toxicology, v. 13, no. 5, p. 529-549, https://doi.org/10.1007/BF01056332.","productDescription":"21 p.","startPage":"529","endPage":"549","numberOfPages":"21","costCenters":[{"id":531,"text":"Patuxent Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":194046,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68aa2c","contributors":{"authors":[{"text":"Wiemeyer, Stanley N.","contributorId":78279,"corporation":false,"usgs":true,"family":"Wiemeyer","given":"Stanley","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":334958,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lamont, Thair","contributorId":56321,"corporation":false,"usgs":true,"family":"Lamont","given":"Thair","email":"","affiliations":[],"preferred":false,"id":334955,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bunck, Christine M. cbunck@usgs.gov","contributorId":731,"corporation":false,"usgs":true,"family":"Bunck","given":"Christine","email":"cbunck@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":334957,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sindelar, C. R.","contributorId":94756,"corporation":false,"usgs":true,"family":"Sindelar","given":"C.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":334959,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gramlich, F. J.","contributorId":13325,"corporation":false,"usgs":true,"family":"Gramlich","given":"F.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":334953,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fraser, James D.","contributorId":86686,"corporation":false,"usgs":false,"family":"Fraser","given":"James D.","affiliations":[{"id":33131,"text":"Dept of Fish and Wildlife Conservation, Virginia Tech","active":true,"usgs":false}],"preferred":false,"id":334956,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Byrd, M. A.","contributorId":49477,"corporation":false,"usgs":true,"family":"Byrd","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":334954,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
,{"id":1013927,"text":"1013927 - 1984 - Bias-elimination in fish population models with stochastic variation in survival of the young","interactions":[],"lastModifiedDate":"2026-04-09T17:26:10.462297","indexId":"1013927","displayToPublicDate":"1984-09-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3624,"text":"Transactions of the American Fisheries Society","active":true,"publicationSubtype":{"id":10}},"title":"Bias-elimination in fish population models with stochastic variation in survival of the young","docAbstract":"The addition of random variation in survival to a single prereproductive age class in a Leslie matrix population model can alter population growth in the modeled system. Methods are presented to characterize the stochastic variation in survival and to determine a correction factor that, when included in the model, will eliminate the propensity for the modeled population to systematically deviate from the initial conditions. This ability is important for applications of fish population models that seek to evaluate probability distributions of population trends that are associated with stochastic variations in survival, and to forecast the effects of changes in fishing mortality rates in fluctuating environments.
","language":"English","publisher":"American Fisheries Society","doi":"10.1577/1548-8659(1984)113<627:BIFPMW>2.0.CO;2","usgsCitation":"Goodyear, C., and Christensen, S., 1984, Bias-elimination in fish population models with stochastic variation in survival of the young: Transactions of the American Fisheries Society, v. 113, no. 5, p. 627-632, https://doi.org/10.1577/1548-8659(1984)113<627:BIFPMW>2.0.CO;2.","productDescription":"6 p.","startPage":"627","endPage":"632","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":130861,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"113","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a52e4b07f02db62adab","contributors":{"authors":[{"text":"Goodyear, C.P.","contributorId":11538,"corporation":false,"usgs":true,"family":"Goodyear","given":"C.P.","email":"","affiliations":[],"preferred":false,"id":319451,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Christensen, S.W.","contributorId":8023,"corporation":false,"usgs":true,"family":"Christensen","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":319450,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70014072,"text":"70014072 - 1984 - Shoreface translation and the Holocene stratigraphic record: Examples from Nova Scotia, the Mississippi Delta and eastern Australia","interactions":[],"lastModifiedDate":"2024-10-16T18:22:01.660768","indexId":"70014072","displayToPublicDate":"1984-08-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Shoreface translation and the Holocene stratigraphic record: Examples from Nova Scotia, the Mississippi Delta and eastern Australia","docAbstract":"Classic descriptive models of barrier sedimentation have been developed with data from the Atlantic and Gulf coasts of the United States. These models are dominated by low to moderate rates of relative sea level (RSL) rise and wave energy. Barriers respond by landward recycling of sediment through the mechanism of shoreface retreat. Sedimentation processes on the central coast of New South Wales (N.S.W.), Australia, consist of rapid RSL rise in early Holocene times followed by a stillstand since 6500 B.P. Wave energy is relatively high year-round and sand sources for barrier formation are only found on the inner shelf. Barrier sedimentation on the central coast of N.S.W. exhibits a thick, composite sequence composed of a basal marine transgressive sand overlain by regressive beach and dune facies.
The Louisiana coast surrounding the Mississippi delta is underlain by compacting deltaic muds which generate very rapid rates of RSL rise. The Louisiana coast experiences low wave energy punctuated by high-energy tropical and extra-tropical storm events. Barrier sediments accumulate from the erosion of deltaic headlands and undergo a transformation from subaerial barrier island systems to subaqueous shoals located on the inner shelf. Drumlins experience coastal erosion on the Eastern Shore of Nova Scotia and provide a sediment source for compartmented estuary mouth barriers. An ongoing, moderate rise of RSL results from the passage of a glacial forebulge. Wave energy is intermediate between Louisiana and N.S.W. and displays a seasonal pattern dominated by frequent winter storms. Coastal barrier sedimentation is episodic, consisting of a period of beach ridge progradation followed by barrier destruction and re-establishment further landward.
The three contrasting sedimentary sequences found in examples from Louisiana, N.S.W. and Nova Scotia indicate that presently available sedimentation models from locations such as the middle Atlantic or Texas coasts of the United States may only represent well-documented regional case studies. A true generalised coastal sedimentation model is required which can identify the parameters controlling vertical and horizontal translation of the depositional surface and provide relationships between these parameters which quantitatively predict the genesis, distribution and geometry of coastal sedimentary facies.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(84)90159-2","usgsCitation":"Boyd, R., and Penland, S., 1984, Shoreface translation and the Holocene stratigraphic record: Examples from Nova Scotia, the Mississippi Delta and eastern Australia: Marine Geology, v. 60, no. 1-4, p. 391-412, https://doi.org/10.1016/0025-3227(84)90159-2.","productDescription":"22 p.","startPage":"391","endPage":"412","costCenters":[],"links":[{"id":225553,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"60","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e8fe4b08c986b3189e7","contributors":{"authors":[{"text":"Boyd, Ron","contributorId":54737,"corporation":false,"usgs":false,"family":"Boyd","given":"Ron","email":"","affiliations":[],"preferred":false,"id":367495,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Penland, S.","contributorId":58778,"corporation":false,"usgs":true,"family":"Penland","given":"S.","email":"","affiliations":[],"preferred":false,"id":367496,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70013972,"text":"70013972 - 1984 - Control of barrier island shape by inlet sediment bypassing: East Frisian Islands, West Germany","interactions":[],"lastModifiedDate":"2024-10-16T17:27:40.442325","indexId":"70013972","displayToPublicDate":"1984-08-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2667,"text":"Marine Geology","active":true,"publicationSubtype":{"id":10}},"title":"Control of barrier island shape by inlet sediment bypassing: East Frisian Islands, West Germany","docAbstract":"A study of the East Frisian Islands has shown that the plan form of these islands can be explained by processes of inlet sediment bypassing. This island chain is located on a high wave energy, high tide range shoreline where the average deep-water significant wave height exceeds 1.0 m and the spring tidal range varies from 2.7 m at Juist to 2.9 m at Wangerooge. An abundant sediment supply and a strong eastward component of wave power (4.4 × 103 W m−1) have caused a persistent eastward growth of the barrier islands. The eastward extension of the barriers has been accommodated more by inlet narrowing, than by inlet migration.
It is estimated from morphological evidence that a minimum of 2.7 × 105 m3 of sand is delivered to the inlets each year via the easterly longshore transport system. Much of this sand ultimately bypasses the inlets in the form of large, migrating swash bars. The location where the swash bars attach to the beach is controlled by the amount of overlap of the ebb-tidal delta along the downdrift inlet shoreline. The configuration of the ebb-tidal delta, in turn, is a function of inlet size and position of the main ebb channel. The swash bar welding process has caused preferential beach nourishment and historical shoreline progradation. Along the East Frisian Islands this process has produced barrier islands with humpbacked, bulbous updrift and bulbous downdrift shapes. The model of barrier island development presented in this paper not only explains well the configuration of the German barriers but also the morphology of barriers along many other mixed energy coasts.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(84)90157-9","usgsCitation":"FitzGerald, D.M., Penland, S., and Nummedal, D., 1984, Control of barrier island shape by inlet sediment bypassing: East Frisian Islands, West Germany: Marine Geology, v. 60, no. 1-4, p. 355-376, https://doi.org/10.1016/0025-3227(84)90157-9.","productDescription":"22 p.","startPage":"355","endPage":"376","costCenters":[],"links":[{"id":226194,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Germany","otherGeospatial":"East Frisian Islands","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[9.92191,54.9831],[9.93958,54.59664],[10.95011,54.36361],[10.93947,54.00869],[11.95625,54.19649],[12.51844,54.47037],[13.64747,54.07551],[14.11969,53.75703],[14.35332,53.24817],[14.07452,52.98126],[14.4376,52.62485],[14.68503,52.08995],[14.6071,51.74519],[15.017,51.10667],[14.57072,51.00234],[14.30701,51.11727],[14.05623,50.92692],[13.33813,50.73323],[12.96684,50.48408],[12.24011,50.26634],[12.41519,49.96912],[12.52102,49.54742],[13.03133,49.30707],[13.59595,48.87717],[13.24336,48.41611],[12.8841,48.28915],[13.02585,47.63758],[12.93263,47.46765],[12.62076,47.67239],[12.14136,47.70308],[11.42641,47.52377],[10.5445,47.5664],[10.40208,47.30249],[9.89607,47.5802],[9.59423,47.52506],[8.52261,47.83083],[8.3173,47.61358],[7.46676,47.62058],[7.59368,48.33302],[8.09928,49.01778],[6.65823,49.20196],[6.18632,49.4638],[6.24275,49.90223],[6.04307,50.12805],[6.15666,50.80372],[5.98866,51.85162],[6.5894,51.85203],[6.84287,52.22844],[7.09205,53.14404],[6.90514,53.48216],[7.10042,53.69393],[7.93624,53.7483],[8.12171,53.52779],[8.80073,54.02079],[8.57212,54.39565],[8.52623,54.96274],[9.28205,54.83087],[9.92191,54.9831]]]},\"properties\":{\"name\":\"Germany\"}}]}","volume":"60","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fb3fe4b0c8380cd4dd9d","contributors":{"authors":[{"text":"FitzGerald, Duncan M.","contributorId":48077,"corporation":false,"usgs":true,"family":"FitzGerald","given":"Duncan","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":367282,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Penland, S.","contributorId":58778,"corporation":false,"usgs":true,"family":"Penland","given":"S.","email":"","affiliations":[],"preferred":false,"id":367284,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nummedal, D.","contributorId":56374,"corporation":false,"usgs":true,"family":"Nummedal","given":"D.","affiliations":[],"preferred":false,"id":367283,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70175961,"text":"wri844188A - 1984 - Ground-water contamination by crude oil at the Bemidji, Minnesota, research site- An introduction: Chapter A in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","interactions":[{"subject":{"id":70175961,"text":"wri844188A - 1984 - Ground-water contamination by crude oil at the Bemidji, Minnesota, research site- An introduction: Chapter A in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","indexId":"wri844188A","publicationYear":"1984","noYear":false,"chapter":"A","title":"Ground-water contamination by crude oil at the Bemidji, Minnesota, research site- An introduction: Chapter A in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study"},"predicate":"IS_PART_OF","object":{"id":30188,"text":"wri844188 - 1984 - Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","indexId":"wri844188","publicationYear":"1984","noYear":false,"title":"Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study"},"id":1}],"isPartOf":{"id":30188,"text":"wri844188 - 1984 - Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","indexId":"wri844188","publicationYear":"1984","noYear":false,"title":"Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study"},"lastModifiedDate":"2018-03-12T12:11:01","indexId":"wri844188A","displayToPublicDate":"1984-07-19T00:00:00","publicationYear":"1984","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":"84-4188","chapter":"A","title":"Ground-water contamination by crude oil at the Bemidji, Minnesota, research site- An introduction: Chapter A in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","docAbstract":"The U.S. Geological Survey has begun a research project to improve understanding of the mobilization, transport, and fate of petroleum contaminants in the shallow subsurface and to use this understanding to develop predictive models of contaminant behavior.
The project site is near Bemidji in northern Minnesota where an accidental spill of 10,500 barrels of crude oil occurred when a pipeline broke on August 20, 1979. Regulatory and remedial actions have been completed. The site is in a remote area with neither man-made hydraulic stresses nor other anthropogenic sources of the compounds of interest. The spill is in the recharge area of a local flow system that discharges to a small closed lake approximately 1,000 feet down the hydraulic gradient. The aquifer is pitted outwash dissected by younger glacial channels and is underlain by poorly permeable till at a depth of about 80 feet. Ground water dissolves oil floating on the water table under the spill site and moves toward the lake. At the water table, ground water enters the lake through lacustrine sediments; at depth, flow may be underneath the lake through the outwash. Contaminant transport has been as rapid as 4 feet per day based on the rate of movement of contaminants monitored through wells installed within a few days of the spill, but average rates are undoubtedly much less.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","publisherLocation":"St. Paul, MN","doi":"10.3133/wri844188A","usgsCitation":"U.S. Geological Survey, 1984, Ground-water contamination by crude oil at the Bemidji, Minnesota, research site- An introduction: Chapter A in Ground-water contamination by crude oil at the Bemidji, Minnesota, research site; US Geological Survey Toxic Waste--ground-water contamination study: U.S. Geological Survey Water-Resources Investigations Report 84-4188, 15 p., https://doi.org/10.3133/wri844188A.","productDescription":"15 p.","startPage":"1","endPage":"15","costCenters":[{"id":392,"text":"Minnesota Water Science Center","active":true,"usgs":true}],"links":[{"id":327400,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Minnesota","city":"Bemidji","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -95.094444,\n 47.576389\n ],\n [\n -95.094444,\n 47.569444\n ],\n [\n -95.083333,\n 47.569444\n ],\n [\n -95.083333,\n 47.576389\n ],\n [\n -95.094444,\n 47.576389\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"57bd73dde4b03fd6b7df2cfb"}
,{"id":70211099,"text":"70211099 - 1984 - Volcanic hazards in Indonesia: The 1982-83 eruption of Galunggung","interactions":[],"lastModifiedDate":"2020-07-15T14:34:44.742582","indexId":"70211099","displayToPublicDate":"1984-07-14T13:02:11","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1582,"text":"Episodes","active":true,"publicationSubtype":{"id":10}},"title":"Volcanic hazards in Indonesia: The 1982-83 eruption of Galunggung","docAbstract":"Indonesia faces a perpetual volcanic-hazards problem of enormous proportions, exemplified by the 1982-83 eruption of Galunggung in West Java. Though moderate in size, this caused widespread destruction and a marked socio-economic impact on more than half a million people. The prolonged activity provided and opportunity for the Volcanological Survey of Indonesia to conduct systematic monitoring studies for the first time. The lessons learned from this study will be useful in developing mobile, rapid-response monitoring teams to meet future volcanic crises.
","language":"English","publisher":"IUGS","doi":"10.18814/epiiugs/1984/v7i2/004","usgsCitation":"Sudradjat, A., and Tilling, R.I., 1984, Volcanic hazards in Indonesia: The 1982-83 eruption of Galunggung: Episodes, v. 7, no. 2, p. 13-19, https://doi.org/10.18814/epiiugs/1984/v7i2/004.","productDescription":"7 p.","startPage":"13","endPage":"19","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":480189,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.18814/epiiugs/1984/v7i2/004","text":"Publisher Index Page"},{"id":376381,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Indonesia","otherGeospatial":"Galunggung","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n 104.39208984375,\n -8.18974234438369\n ],\n [\n 109.44580078125,\n -8.18974234438369\n ],\n [\n 109.44580078125,\n -5.44102230371796\n ],\n [\n 104.39208984375,\n -5.44102230371796\n ],\n [\n 104.39208984375,\n -8.18974234438369\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"7","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Sudradjat, A.","contributorId":167407,"corporation":false,"usgs":false,"family":"Sudradjat","given":"A.","email":"","affiliations":[],"preferred":false,"id":792767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tilling, Robert I. 0000-0003-4263-7221 rtilling@usgs.gov","orcid":"https://orcid.org/0000-0003-4263-7221","contributorId":2567,"corporation":false,"usgs":true,"family":"Tilling","given":"Robert","email":"rtilling@usgs.gov","middleInitial":"I.","affiliations":[],"preferred":true,"id":792768,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70014029,"text":"70014029 - 1984 - Mineralogic evidence for an impact event at the Cretaceous-Tertiary boundary","interactions":[],"lastModifiedDate":"2025-11-18T16:47:26.995723","indexId":"70014029","displayToPublicDate":"1984-05-25T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Mineralogic evidence for an impact event at the Cretaceous-Tertiary boundary","docAbstract":"A thin claystone layer found in nonmarine rocks at the palynological Cretaceous-Tertiary boundary in eastern Montana contains an anomalously high value of iridium. The nonclay fraction is mostly quartz with minor feldspar, and some of these grains display planar features. These planar features are related to specific crystallographic directions in the quartz lattice. The shocked quartz grains also exhibit asterism and have lowered refractive indices. All these mineralogical features are characteristic of shock metamorphism and are compelling evidence that the shocked grains are the product of a high velocity impact between a large extraterrestrial body and the earth. The shocked minerals represent silicic target material injected into the stratosphere by the impact of the projectile.","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.224.4651.867","issn":"00368075","usgsCitation":"Bohor, B., Foord, E., Modreski, P., and Triplehorn, D.M., 1984, Mineralogic evidence for an impact event at the Cretaceous-Tertiary boundary: Science, v. 224, no. 4651, p. 867-869, https://doi.org/10.1126/science.224.4651.867.","productDescription":"3 p.","startPage":"867","endPage":"869","costCenters":[],"links":[{"id":225933,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"224","issue":"4651","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5a8be4b0c8380cd6ef59","contributors":{"authors":[{"text":"Bohor, B.F.","contributorId":96351,"corporation":false,"usgs":true,"family":"Bohor","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":367414,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foord, E.E.","contributorId":86835,"corporation":false,"usgs":true,"family":"Foord","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":367413,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Modreski, P.J.","contributorId":98335,"corporation":false,"usgs":true,"family":"Modreski","given":"P.J.","affiliations":[],"preferred":false,"id":367415,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Triplehorn, Don M.","contributorId":73211,"corporation":false,"usgs":false,"family":"Triplehorn","given":"Don","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":367412,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70210052,"text":"70210052 - 1984 - Brief comparison of some technological and environmental aspects of large-scale surface and underground mining of oil shale, Piceance Creek Basin, Colorado","interactions":[],"lastModifiedDate":"2020-05-13T13:04:49.259917","indexId":"70210052","displayToPublicDate":"1984-05-12T12:10:01","publicationYear":"1984","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Brief comparison of some technological and environmental aspects of large-scale surface and underground mining of oil shale, Piceance Creek Basin, Colorado","docAbstract":"Comparison of several aspects of surface and underground methods of mining for large-scale oil shale extraction in the Piceance Creek Basin suggests that surface mining techniques may have several advantages over underground methods. For a production level of one million barrels of shale oil per day, potential advantages include those related to economics, environmental effects, and the overall national interest. One million barrels of shale oil per day could be produced from 2-3 large surface mines compared to perhaps 10-20 large underground mines. Fewer surface mines would result in: (1) fewer roads and utility corridors, (2) less acres disturbed per barrel of oil pro duced, (3) reduced detrimental effects on ground water and surface water, (4) less wildlife distur bance, (5) a safer overall operation, (6) a greater opportunity to achieve stable long-term land and water reclamation, (7) potential economic advantages related to scale and materials handling, and (8) a three- to five-fold increase in resource recovery. Advantages to underground (including modified in situ [MIS]) mines include: (1) more flexibility of mine siting, (2) mining and handling a minimum of waste rock, and (3) simplified ore grade control for processing.
","largerWorkType":{"id":24,"text":"Conference Paper"},"largerWorkTitle":"17th oil shale symposium proceedings","largerWorkSubtype":{"id":19,"text":"Conference Paper"},"conferenceTitle":"17th oil shale symposium proceedings","conferenceDate":"April 16-18, 1984","conferenceLocation":"Golden, Colorado ","language":"English","publisher":"Colorado School of Mines","usgsCitation":"Miller, G., Dyni, J.R., and Dietz, D., 1984, Brief comparison of some technological and environmental aspects of large-scale surface and underground mining of oil shale, Piceance Creek Basin, Colorado, in 17th oil shale symposium proceedings, v. 17, Golden, Colorado , April 16-18, 1984, p. 269-278.","productDescription":"10 p.","startPage":"269","endPage":"278","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":374685,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"Piceance Creek Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -108.8690185546875,\n 40.03182061333687\n ],\n [\n -107.60009765625,\n 40.03182061333687\n ],\n [\n -107.60009765625,\n 40.643135583312805\n ],\n [\n -108.8690185546875,\n 40.643135583312805\n ],\n [\n -108.8690185546875,\n 40.03182061333687\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"17","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Miller, G.A.","contributorId":107671,"corporation":false,"usgs":true,"family":"Miller","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":788935,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dyni, John R. jdyni@usgs.gov","contributorId":756,"corporation":false,"usgs":true,"family":"Dyni","given":"John","email":"jdyni@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":788930,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dietz, D.R.","contributorId":105830,"corporation":false,"usgs":true,"family":"Dietz","given":"D.R.","email":"","affiliations":[],"preferred":false,"id":788936,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70209999,"text":"70209999 - 1984 - A seismic refraction study of the Oregon Cascades","interactions":[],"lastModifiedDate":"2020-05-08T15:05:09.438622","indexId":"70209999","displayToPublicDate":"1984-05-10T10:00:31","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"A seismic refraction study of the Oregon Cascades","docAbstract":"A 275‐km‐long reversed refraction profile in the Oregon Cascades, two shallow earthquakes of magnitude 5 in southern Washington, a shallow earthquake of magnitude 4.6 in northern California, and a previously published analysis of the Bouguer gravity field are used to develop a crustal P wave velocity model for the Oregon Cascades. Travel time analysis of the refraction profile indicates a crustal structure characterized by surface layers with P wave velocities that vary from 2.9 to 5.2 km/s and thicknesses that vary from 2.5 to 5.0 km, upper crustal velocities of 6.1 to 6.5 km/s between the depths of 3 and 29 km, lower crustal velocities near 7.0 km/s between the depths of 29 and 44 km, and a mantle reflector at a depth of 44 km. Comparison with synthetic seismograms supports this structure and shows that the lower crustal and Mono transitions can be better modeled by continuous velocity gradients than by first‐order discontinuities. Arrival times from two shallow earthquakes in southern Washington in 1981 across 14 telemetry stations in the Oregon Cascades show an apparent velocity of 7.62 km/s. On the basis of a previously published gravity analysis, the mean north‐south component of the dip to the crust‐mantle boundary is estimated at 1° down dip to the south. The apparent velocity from the earthquakes and the dip estimate from gravity indicate that the true Pn velocity is 7.70 km/s. Arrival times from a shallow earthquake in northern California in 1978 across telemetry stations in the Washington Cascades are consistent with this model and indicate that the upper mantle velocity reaches 8.20 km/s at a depth of approximately 100 km.
Muir Inlet in Glacier Bay, Alaska, is a glacial fjord receiving a tremendous volume of sediment annually. The rate of sediment accumulation is greatest proximal to Muir Glacier (about 9 m yr−1) and decreases away from the glacier. The primary sediment sources are meltwater streams discharging at subglacial and ice-marginal positions to form overflows, interflows, and underflows (continuous turbidity currents).
Overflows and interflows interact with diurnal tidal currents and their volume and sediment concentration varies diurnally and annually with meltwater discharge. These effects produce cyclic deposits of a thin fine-grained sand or silt lamina that grades normally to a thicker poorly to very poorly sorted mud lamina. This lamina couplet is termed a cyclopel.
Underflows are suggested to occur in this glacimarine environment because of conditions unique to subglacial fluvial systems. Underflow deposits occur only in proximal positions (<0.5 km from glacier face), and are coarse-grained, reverse to normal graded, and exhibit an increase in sorting and sand content up-layer.
Ice-rafted debris (identified as particles >177 μm) is ubiquitous, though low (<5% by weight), and occurs as isolated particles, frozen pellets, or as lenses that in cores may have a lamina appearance. Proximally, ice-rafted debris is difficult to identify because proximal sediment is often as coarse-grained.
Deposited sediment may be reworked by tidal currents, and sediment gravity flows.
Depositional processes operating in Muir Inlet produce interlaminated sand/silt/clay that characterizes sediment proximal to a glacier and fines seaward to mud. Sediment is classified into one of three sediment types:
(1) Type I sediment is very fine grained (mean 8.65--7.17 ~), low in sand (0.1--11.2%), and very poorly to poorly sorted. It is the dominant sediment type in Muir Inlet, and is transported by plumes and deposited by suspension settling.
(2) Type II sediment is fine- to coarse-grained (mean 6.70--3.12 ~), low to high in sand (5.1---86.6%), and very poorly to moderately sorted. It represents reworked sediment, proximal plume deposits, or coarse-grained laminae of cyclopels.
(3) Type III sediment is coarse-grained (mean 3.89--2.38 ~), high in sand (58.0--100.0%), and poorly to well sorted. It is deposited by sediment gravity flows or underflows.
","language":"English","publisher":"Elsevier","doi":"10.1016/0025-3227(84)90197-X","usgsCitation":"Mackiewicz, N., Powell, R., Carlson, P., and Molnia, B.F., 1984, Interlaminated ice-proximal glacimarine sediments in Muir Inlet, Alaska: Marine Geology, v. 57, no. 1-4, p. 113-147, https://doi.org/10.1016/0025-3227(84)90197-X.","productDescription":"35 p.","startPage":"113","endPage":"147","costCenters":[{"id":36171,"text":"National Civil Applications Center","active":true,"usgs":true}],"links":[{"id":219901,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Muir Inlet","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -139.3374585763036,\n 59.27493414566115\n ],\n [\n -139.3374585763036,\n 54.123667606054056\n ],\n [\n -131.39721147007114,\n 54.123667606054056\n ],\n [\n -131.39721147007114,\n 59.27493414566115\n ],\n [\n -139.3374585763036,\n 59.27493414566115\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"57","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3d28e4b0c8380cd63347","contributors":{"authors":[{"text":"Mackiewicz, N.E.","contributorId":25694,"corporation":false,"usgs":true,"family":"Mackiewicz","given":"N.E.","email":"","affiliations":[],"preferred":false,"id":365545,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Powell, R.D.","contributorId":74015,"corporation":false,"usgs":true,"family":"Powell","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":365547,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carlson, P.R.","contributorId":97055,"corporation":false,"usgs":true,"family":"Carlson","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":365548,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Molnia, Bruce F. 0000-0001-8102-6269","orcid":"https://orcid.org/0000-0001-8102-6269","contributorId":301013,"corporation":false,"usgs":true,"family":"Molnia","given":"Bruce","email":"","middleInitial":"F.","affiliations":[{"id":36171,"text":"National Civil Applications Center","active":true,"usgs":true}],"preferred":true,"id":365546,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120855,"text":"70120855 - 1984 - A field test of a winter pronghorn habitat suitability index model","interactions":[],"lastModifiedDate":"2014-08-18T09:34:18","indexId":"70120855","displayToPublicDate":"1984-04-10T09:33:27","publicationYear":"1984","noYear":false,"publicationType":{"id":4,"text":"Book"},"publicationSubtype":{"id":12,"text":"Conference publication"},"title":"A field test of a winter pronghorn habitat suitability index model","docAbstract":"No abstract available.","largerWorkTitle":"Eleventh biennial pronghorn antelope workshop","conferenceTitle":"Eleventh biennial pronghorn antelope workshop","conferenceDate":"1984-04-10T00:00:00","conferenceLocation":"Corpus Christi, TX","language":"English","usgsCitation":"Cook, J., Allen, A.W., Armbruster, M., and Irwin, L., 1984, A field test of a winter pronghorn habitat suitability index model, 2 p.","productDescription":"2 p.","numberOfPages":"2","costCenters":[],"links":[{"id":292374,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f25fc1e4b03334187188f5","contributors":{"authors":[{"text":"Cook, J.G.","contributorId":75885,"corporation":false,"usgs":true,"family":"Cook","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":498482,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Allen, Arthur W.","contributorId":40648,"corporation":false,"usgs":true,"family":"Allen","given":"Arthur","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":498480,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Armbruster, M.J.","contributorId":21127,"corporation":false,"usgs":true,"family":"Armbruster","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":498479,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Irwin, L.L.","contributorId":72579,"corporation":false,"usgs":true,"family":"Irwin","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":498481,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70013901,"text":"70013901 - 1984 - Major carbon-14 deficiency in modern snail shells from southern Nevada springs","interactions":[],"lastModifiedDate":"2025-11-20T16:50:08.550523","indexId":"70013901","displayToPublicDate":"1984-04-06T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Major carbon-14 deficiency in modern snail shells from southern Nevada springs","docAbstract":"Carbon-14 contents as low as 3.3 ± 0.2 percent modern (apparent age, 27,000 years) measured from the shells of snails Melanoides tuberculatus living in artesian springs in southern Nevada are attributed to fixation of dissolved HCO3- with which the shells are in carbon isotope equilibrium. Recognition of the existence of such extreme deficiencies is necessary so that erroneous ages are not attributed to freshwater biogenic carbonates.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.224.4644.58","issn":"00368075","usgsCitation":"Riggs, A., 1984, Major carbon-14 deficiency in modern snail shells from southern Nevada springs: Science, v. 224, no. 4644, p. 58-61, https://doi.org/10.1126/science.224.4644.58.","productDescription":"4 p.","startPage":"58","endPage":"61","costCenters":[],"links":[{"id":225989,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Nevada","otherGeospatial":"southern Nevada","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118.88277512777015,\n 38.33012887684694\n ],\n [\n -114.61336760787137,\n 35.00673221663355\n ],\n [\n -114.7498545050421,\n 36.019978816516755\n ],\n [\n -113.96172703683513,\n 36.09823319683615\n ],\n [\n -114.02928384201977,\n 38.352235693453565\n ],\n [\n -118.88277512777015,\n 38.33012887684694\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"224","issue":"4644","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4c0ce4b0c8380cd69988","contributors":{"authors":[{"text":"Riggs, A.C.","contributorId":41462,"corporation":false,"usgs":true,"family":"Riggs","given":"A.C.","email":"","affiliations":[],"preferred":false,"id":367129,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1001397,"text":"1001397 - 1984 - Comparative ability of northern pintails, gadwalls, and northern shovelers to metabolize foods","interactions":[],"lastModifiedDate":"2024-11-04T16:00:50.362161","indexId":"1001397","displayToPublicDate":"1984-04-02T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Comparative ability of northern pintails, gadwalls, and northern shovelers to metabolize foods","docAbstract":"Feeding trials were used to compare the ability of northern pintails (Anas acuta), gadwalls (A. strepera), and northern shovelers (A. clypeata) to metabolize energy from a turkey starter ration, alfalfa pellets, and common barnyardgrass (Echinochloa crusgalli) seeds. No differences (P > 0.05) were detected among the three species for any of the three foods (kg body weight/day basis), for dry matter intake (DMI), body weight gain (BWG), apparent metabolizable energy (AME), or metabolized energy (MEE) on any given diet consumed in quantities large enough to promote body weight gain. The AME content of alfalfa was 57% less than the value for turkey starter and 50% less than for barnyardgrass seeds. All three species metabolized more energy and gained weight faster when fed turkey starter. Energy modeling may be facilitated if additional research verifies that all species of dabbling ducks have equal ability to obtain energy from foods available to them in the wild. Behavioral and morphological factors may be more important in defining feeding niches than digestive physiology, at least for the three duck species tested, at the time of year of the experiments, and within the limits of the quality of foods used.
","language":"English","publisher":"Wiley","doi":"10.2307/3801167","usgsCitation":"Miller, M.R., 1984, Comparative ability of northern pintails, gadwalls, and northern shovelers to metabolize foods: Journal of Wildlife Management, v. 48, no. 2, p. 362-370, https://doi.org/10.2307/3801167.","productDescription":"9 p.","startPage":"362","endPage":"370","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133760,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae5a1","contributors":{"authors":[{"text":"Miller, Michael R.","contributorId":45796,"corporation":false,"usgs":false,"family":"Miller","given":"Michael","email":"","middleInitial":"R.","affiliations":[{"id":12709,"text":"Department of Animal Science, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA","active":true,"usgs":false}],"preferred":false,"id":310970,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":1001233,"text":"1001233 - 1984 - Nest spacing, habitat selection, and behavior of waterfowl on Miller Lake Island, North Dakota","interactions":[],"lastModifiedDate":"2024-11-04T15:51:04.682079","indexId":"1001233","displayToPublicDate":"1984-04-02T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Nest spacing, habitat selection, and behavior of waterfowl on Miller Lake Island, North Dakota","docAbstract":"The nesting behavior of a concentration of nesting mallards (Anas platyrhynchos) and gadwalls (A. strepera) was studied on a 4.5-ha island in Miller Lake, North Dakota, in 1977. A single 0.59-ha clump of thick shrub contained 225 simultaneously active mallard nests on 10 May. During the peak nesting period, mallard nests were spaced an average of 2.7 m from conspecifics. Active nests of all species peaked at 327, spaced an average of 2.1 m apart. Nests were clustered in thick shrub with moderate numbers in open shrub and few in grassland. Nest placement was significantly related to the amount of vegetative screening although mammalian predators were absent on the island. Cover density appeared to be important to the nesting hens as vegetation screened nests from potential avian predators and from harassment by other conspecific nesting hens and drakes. Mallards and gadwalls nesting on this island used wetlands in >100 km2 around Miller Lake. During daylight hours in late April 1978, an average of 4.9 mallards/minute arrived at the island; a peak of 17.2 mallards/minute arrived at 0800. In late April 1978, as many as 26 mallard pairs/ha occurred on favored wetlands and behavioral aggression was intense. Yet, most mallard hens maintained adequate space to acquire food and other requisites. Mallards and gadwalls were sufficiently adaptable to successfully exploit the Miller Lake island and environments that resulted in high reproductive success. Other local breeding Anatidae because of behavioral constraints were unable to exploit the same situation.
","language":"English","publisher":"Wiley","doi":"10.2307/3801163","usgsCitation":"Lokemoen, J.T., Duebbert, H.F., and Sharp, D., 1984, Nest spacing, habitat selection, and behavior of waterfowl on Miller Lake Island, North Dakota: Journal of Wildlife Management, v. 48, no. 2, p. 309-321, https://doi.org/10.2307/3801163.","productDescription":"13 p.","startPage":"309","endPage":"321","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133658,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North Dakota","otherGeospatial":"Miller Lake 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,{"id":1001446,"text":"1001446 - 1984 - Ecological distribution and crude density of breeding birds on prairie wetlands","interactions":[],"lastModifiedDate":"2024-11-04T16:05:30.144261","indexId":"1001446","displayToPublicDate":"1984-04-02T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Ecological distribution and crude density of breeding birds on prairie wetlands","docAbstract":"Breeding populations of 28 species of wetland-dwelling birds other than waterfowl (Anatidae) were censused on 1,321 wetlands lying within the prairie pothole region of North Dakota. Ecological distribution and two crude measures of relative density were calculated for the 22 commonest species using eight wetland classes. Semipermanent wetlands supported nearly two-thirds of the population and were used by all 22 species, whereas seasonal wetlands contained about one-third of the population and were used by 20 species Semipermanent, fen, and temporary wetlands contained highest bird densities on the basis of wetland area; on the basis of wetland unit, densities were highest on semipermanent, permanent, alkali, and fen wetlands. The highest ranking of semipermanent wetlands by all three measures of use was probably because these wetlands, as well as being relatively numerous and large, were vegetatively diverse. The fairly large proportion of the bird population supported by seasonal wetlands was a result of wetland abundance and moderate vegetative diversity. Increased vegetative diversity results from the development of characteristic zones of hydrophytes at sites where water persists longer during the growing season. Frequent cultivation of prairie wetlands results in the replacement of tall, robust perennials by bare soil or stands of short, weak-stemmed annuals that likely are unattractive to nesting birds.","language":"English","publisher":"Wiley","doi":"10.2307/3801174","usgsCitation":"Kantrud, H.A., and Stewart, R., 1984, Ecological distribution and crude density of breeding birds on prairie wetlands: Journal of Wildlife Management, v. 48, no. 2, p. 426-437, https://doi.org/10.2307/3801174.","productDescription":"12 p.","startPage":"426","endPage":"437","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":488170,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/3801174","text":"Publisher Index Page"},{"id":133367,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"North 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,{"id":70230758,"text":"70230758 - 1984 - Cenozoic plate motions and the volcano-tectonic evolution of western Oregon and Washington","interactions":[],"lastModifiedDate":"2022-04-25T14:49:39.477786","indexId":"70230758","displayToPublicDate":"1984-04-01T09:39:14","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3524,"text":"Tectonics","active":true,"publicationSubtype":{"id":10}},"title":"Cenozoic plate motions and the volcano-tectonic evolution of western Oregon and Washington","docAbstract":"A refined northeast Pacific plate-motion model provides a framework for analysis of the Tertiary volcanic and tectonic history of western Oregon and Washington. We examine three possible models for the origin of the allochthonous Paleocene and Eocene oceanic basalt basement of the Coast Range: (1) accretion to the continent of hot spot generated linear seamount chains; (2) accretion of thick oceanic crust and seamounts generated during Farallon-Kula spreading reorganizations between 61 and 48 Ma; and (3) eruption of basalt during oblique rifting of the continental margin as it overrode an active Yellowstone hot spot on the Kula-Farallon ridge. The plate model suggests that microplate rotation and accretion of hot spot generated linear aseismic ridges cannot be easily reconciled with rapid northeast motion of the KuIa and Farallon plates and the well-established paleomagnetic rotations. Following emplacement of the Coast Range basement, changes in the character of forearc, back arc and Cascade arc volcanism correlate with a marked decrease in the rate of Farallon-North America convergence between 43 and and 28 Ma. This slowdown may be responsible for (1) westward stepping of the volcanic arc front from the Challis axis to a Cascade axis at about 42 Ma; (2) a subsequent episode of increased ash flow tuff volcanism and extension in the Cascade arc between 37 and 18 Ma that correlates with the “ignimbrite flare-up” in the Basin and Range; and (3) a period of extensional basaltic and alkalic volcanism and intrusion in the Coast Range between 44 and 28 Ma. Reduction of the convergence rate and westward stepping of the flexure in the subducted slab may have reduced the horizontal compressive stress on the continent, allowing increased injection of magma into the crust, development of large, shallow magma chambers, and the outbreak of extensional volcanism over a large area behind the Farallon-North America subduction zone.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/TC003i002p00275","usgsCitation":"Wells, R.E., Engebretson, D.C., Snavely, P.D., and Coe, R.S., 1984, Cenozoic plate motions and the volcano-tectonic evolution of western Oregon and Washington: Tectonics, v. 3, no. 2, p. 275-294, https://doi.org/10.1029/TC003i002p00275.","productDescription":"20 p.","startPage":"275","endPage":"294","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":399584,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Oregon, 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\"}}]}","volume":"3","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-07-26","publicationStatus":"PW","contributors":{"authors":[{"text":"Wells, Ray E. 0000-0002-7796-0160 rwells@usgs.gov","orcid":"https://orcid.org/0000-0002-7796-0160","contributorId":149772,"corporation":false,"usgs":true,"family":"Wells","given":"Ray","email":"rwells@usgs.gov","middleInitial":"E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":841291,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Engebretson, David C.","contributorId":205487,"corporation":false,"usgs":false,"family":"Engebretson","given":"David","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":841292,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Snavely, P. D. Jr.","contributorId":22770,"corporation":false,"usgs":true,"family":"Snavely","given":"P.","suffix":"Jr.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":841293,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coe, R. S.","contributorId":81228,"corporation":false,"usgs":false,"family":"Coe","given":"R.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":841294,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70120852,"text":"70120852 - 1984 - Estimating the effect of hunting on annual survival rates of adult mallards","interactions":[],"lastModifiedDate":"2024-11-04T17:00:02.257322","indexId":"70120852","displayToPublicDate":"1984-04-01T09:23:09","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Estimating the effect of hunting on annual survival rates of adult mallards","docAbstract":"Management programs for waterfowl populations include rationale for, and establishment of, hunting regulations. These programs rest partially on the results of scientific studies on the effect of harvest rates on annual survival rates. The evidence of this relationship has changed markedly since the mid-1970's, and it is not widely believed that a largely compensatory relationship exists between hunting mortality and other forms of mortality for the mallard (Anas platyrhynchos). This paper employs a general probabilistic model formulated to include a parameter (b) representing a continuum between complete compensation (b=0) and total additivity (b=1). Maximum likelihood estimates of this parameter were computer for 47 data sets of adult mallards banded throughout North American before hunting commenced. We found additional evidence of a highly compensatory mortality process for adult male mallards, while the evidence for adults female mallards remains inconclusive. Effective harvest, land acquisition, and land management programs depend upon additional information on the chronology and mechanisms underlying a compensatory mortality process.","language":"English","publisher":"Wildlife Society","doi":"10.2307/3801166","usgsCitation":"Burnham, K.P., White, G.C., and Anderson, D.R., 1984, Estimating the effect of hunting on annual survival rates of adult mallards: Journal of Wildlife Management, v. 48, no. 2, p. 350-361, https://doi.org/10.2307/3801166.","productDescription":"12 p.","startPage":"350","endPage":"361","costCenters":[],"links":[{"id":488227,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2307/3801166","text":"Publisher Index Page"},{"id":292371,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53f25fe4e4b0333418718917","contributors":{"authors":[{"text":"Burnham, Kenneth P.","contributorId":95025,"corporation":false,"usgs":true,"family":"Burnham","given":"Kenneth","email":"","middleInitial":"P.","affiliations":[{"id":189,"text":"Colorado Cooperative Fish and Wildlife Research Unit","active":false,"usgs":true}],"preferred":false,"id":498472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"White, Gary C.","contributorId":66831,"corporation":false,"usgs":false,"family":"White","given":"Gary","email":"","middleInitial":"C.","affiliations":[{"id":6621,"text":"Colorado State University","active":true,"usgs":false}],"preferred":false,"id":498470,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, David R.","contributorId":92722,"corporation":false,"usgs":true,"family":"Anderson","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":498471,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70014063,"text":"70014063 - 1984 - Fossils of hydrothermal vent worms from Cretaceous sulfide ores of the Samail ophiolite, Oman","interactions":[],"lastModifiedDate":"2025-11-20T16:59:48.446012","indexId":"70014063","displayToPublicDate":"1984-03-30T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3338,"text":"Science","active":true,"publicationSubtype":{"id":10}},"title":"Fossils of hydrothermal vent worms from Cretaceous sulfide ores of the Samail ophiolite, Oman","docAbstract":"Fossil worm tubes of Cretaceous age preserved in the Bayda massive sulfide deposit of the Samail ophiolite, Oman, are apparently the first documented examples of fossils embedded in massive sulfide deposits from the geologic record. The geologic setting of the Bayda deposit and the distinctive mineralogic and textural features of the fossiliferous samples suggest that the Bayda sulfide deposit and fossil fauna are remnants of a Cretaceous sea-floor hydrothermal vent similar to modern hot springs on the East Pacific Rise and the Juan de Fuca Ridge.
","language":"English","publisher":"American Association for the Advancement of Science","doi":"10.1126/science.223.4643.1407","issn":"00368075","usgsCitation":"Haymon, R., Koski, R., and Sinclair, C., 1984, Fossils of hydrothermal vent worms from Cretaceous sulfide ores of the Samail ophiolite, Oman: Science, v. 223, no. 4643, p. 1407-1409, https://doi.org/10.1126/science.223.4643.1407.","productDescription":"3 p.","startPage":"1407","endPage":"1409","costCenters":[],"links":[{"id":225422,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Oman","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n 57.370964245666244,\n 23.82099762554445\n ],\n [\n 56.778723974184544,\n 22.553180703386502\n ],\n [\n 56.47872050222912,\n 21.299535219636695\n ],\n [\n 58.040145262642966,\n 20.904916651997283\n ],\n [\n 58.12479287236886,\n 21.541573993214833\n ],\n [\n 57.76330365901765,\n 22.12099949152139\n ],\n [\n 58.02074300857758,\n 22.93048172886184\n ],\n [\n 58.3860729502932,\n 23.144495696419717\n ],\n [\n 58.147817599336975,\n 23.715351336200357\n ],\n [\n 57.370964245666244,\n 23.82099762554445\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"223","issue":"4643","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a138ee4b0c8380cd546c1","contributors":{"authors":[{"text":"Haymon, R.M.","contributorId":17772,"corporation":false,"usgs":true,"family":"Haymon","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":367479,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koski, R.A.","contributorId":16006,"corporation":false,"usgs":true,"family":"Koski","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":367478,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sinclair, C.","contributorId":98476,"corporation":false,"usgs":true,"family":"Sinclair","given":"C.","email":"","affiliations":[],"preferred":false,"id":367480,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70013154,"text":"70013154 - 1984 - Zinc- and Y-group-bearing senaite from St Peters Dome, and new data on senaite from Dattas, Minas Gerais, Brazil","interactions":[],"lastModifiedDate":"2024-10-07T15:42:01.391879","indexId":"70013154","displayToPublicDate":"1984-03-01T00:00:00","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2748,"text":"Mineralogical Magazine","active":true,"publicationSubtype":{"id":10}},"title":"Zinc- and Y-group-bearing senaite from St Peters Dome, and new data on senaite from Dattas, Minas Gerais, Brazil","docAbstract":"A Zn- and Y-group-bearing senaite, formulated as AM21O38 (Pb0.63Na0.46Ba0.11)Σ1.20(Ti14.64![\"\"](\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20210202014135270-0938:S0026461X00023380:S0026461X00023380_inline01.png?pub-status=live\")
Zn1.74![\"\"](\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20210202014135270-0938:S0026461X00023380:S0026461X00023380_inline04.png?pub-status=live\")
Y‒group REE0.70Mn0.38Nb0.20Sn0.03Zr0.03Th0.02)Σ20.9O38, a member of the crichtonite group, is a newly characterized phase associated with murataite at the St Peters Dome area, Colorado. The Zn- and Y-group-bearing senaite is uranium-free and nonmetamict, but otherwise is comparable to known senaites and davidites in X-ray diffraction pattern, symmetry, and structure. The REE distribution shows a strong dominance of Y and the Y-group REE which are present in M(1). Megascopically, the mineral is black, submetallic, and opaque; in polished section it appears to be white and moderately bright compared with murataite. Cleavage is absent but twinning on {52![\"\"](\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20210202014135270-0938:S0026461X00023380:S0026461X00023380_inline07.png?pub-status=live\")
0} is present.
Senaite and hitherto unreported zinc-bearing senaite from Dattas, Diamantina, Minas Gerais, Brazil, have the following respective structural formulas as determined by electron microprobe:
(Pb0.76Sr0.20La0.08Ce0.07Ba0.04)Σ1.15(Ti12.89![\"\"](\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20210202014135270-0938:S0026461X00023380:S0026461X00023380_inline03.png?pub-status=live\")
Mn0.88Y0.59Zn0.12Mg0.07Nb0.03Cr0.02Th0.02)Σ20.61O38
and
(Pb0.89Ba0.15Ce0.02Sr0.02)Σ1.08(Ti14.57![\"\"](\"https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20210202014135270-0938:S0026461X00023380:S0026461X00023380_inline05.png?pub-status=live\")
Zn1.76Na0.63Mn0.50Y0.28Nb0.14Mg0.04Cr0.02)Σ20.83O38
","language":"English","publisher":"Cambridge University Press","doi":"10.1180/minmag.1984.048.346.13","usgsCitation":"Foord, E.E., Sharp, W.N., and Adams, J., 1984, Zinc- and Y-group-bearing senaite from St Peters Dome, and new data on senaite from Dattas, Minas Gerais, Brazil: Mineralogical Magazine, v. 48, no. 346, p. 97-106, https://doi.org/10.1180/minmag.1984.048.346.13.","productDescription":"10 p.","startPage":"97","endPage":"106","costCenters":[],"links":[{"id":220628,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Brazil","otherGeospatial":"Dattas, Minas Gerais","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-57.62513,-30.21629],[-56.2909,-28.85276],[-55.16229,-27.88192],[-54.49073,-27.47476],[-53.64874,-26.92347],[-53.62835,-26.12487],[-54.13005,-25.54764],[-54.62529,-25.73926],[-54.42895,-25.16218],[-54.29348,-24.5708],[-54.29296,-24.02101],[-54.65283,-23.83958],[-55.0279,-24.00127],[-55.40075,-23.95694],[-55.51764,-23.572],[-55.61068,-22.65562],[-55.79796,-22.35693],[-56.47332,-22.0863],[-56.88151,-22.28215],[-57.93716,-22.09018],[-57.87067,-20.73269],[-58.16639,-20.1767],[-57.8538,-19.97],[-57.95,-19.4],[-57.67601,-18.96184],[-57.49837,-18.17419],[-57.73456,-17.55247],[-58.2808,-17.27171],[-58.38806,-16.87711],[-58.24122,-16.29957],[-60.15839,-16.25828],[-60.54297,-15.09391],[-60.25115,-15.07722],[-60.26433,-14.64598],[-60.4592,-14.35401],[-60.5033,-13.77595],[-61.08412,-13.47938],[-61.7132,-13.4892],[-62.12708,-13.19878],[-62.80306,-13.00065],[-63.1965,-12.62703],[-64.31635,-12.46198],[-65.40228,-11.56627],[-65.3219,-10.89587],[-65.44484,-10.51145],[-65.33844,-9.76199],[-66.64691,-9.93133],[-67.1738,-10.30681],[-68.04819,-10.71206],[-68.27125,-11.01452],[-68.78616,-11.03638],[-69.52968,-10.95173],[-70.09375,-11.12397],[-70.54869,-11.00915],[-70.48189,-9.49012],[-71.30241,-10.07944],[-72.18489,-10.0536],[-72.56303,-9.52019],[-73.22671,-9.46221],[-73.01538,-9.03283],[-73.57106,-8.42445],[-73.98724,-7.52383],[-73.7234,-7.341],[-73.72449,-6.9186],[-73.12003,-6.62993],[-73.21971,-6.08919],[-72.96451,-5.74125],[-72.89193,-5.27456],[-71.74841,-4.59398],[-70.92884,-4.40159],[-70.79477,-4.25126],[-69.89364,-4.29819],[-69.4441,-1.55629],[-69.42049,-1.12262],[-69.57707,-0.54999],[-70.02066,-0.18516],[-70.01557,0.54141],[-69.4524,0.70616],[-69.25243,0.60265],[-69.21864,0.98568],[-69.8046,1.08908],[-69.81697,1.71481],[-67.86857,1.69246],[-67.53781,2.03716],[-67.26,1.72],[-67.06505,1.13011],[-66.87633,1.25336],[-66.32577,0.72445],[-65.54827,0.78925],[-65.35471,1.09528],[-64.61101,1.32873],[-64.19931,1.49285],[-64.08309,1.91637],[-63.36879,2.2009],[-63.42287,2.41107],[-64.27,2.49701],[-64.40883,3.12679],[-64.36849,3.79721],[-64.81606,4.05645],[-64.62866,4.14848],[-63.88834,4.02053],[-63.0932,3.77057],[-62.80453,4.00697],[-62.08543,4.16212],[-60.96689,4.53647],[-60.60118,4.9181],[-60.73357,5.20028],[-60.21368,5.24449],[-59.98096,5.01406],[-60.111,4.57497],[-59.76741,4.4235],[-59.53804,3.9588],[-59.81541,3.6065],[-59.97452,2.75523],[-59.71855,2.24963],[-59.64604,1.78689],[-59.03086,1.3177],[-58.54001,1.26809],[-58.42948,1.46394],[-58.11345,1.5072],[-57.66097,1.68258],[-57.33582,1.94854],[-56.7827,1.86371],[-56.53939,1.89952],[-55.9957,1.81767],[-55.9056,2.022],[-56.07334,2.22079],[-55.97332,2.51036],[-55.56976,2.42151],[-55.09759,2.52375],[-54.52475,2.31185],[-54.08806,2.10556],[-53.77852,2.3767],[-53.55484,2.3349],[-53.41847,2.05339],[-52.93966,2.12486],[-52.55642,2.50471],[-52.24934,3.24109],[-51.6578,4.15623],[-51.31715,4.20349],[-51.06977,3.6504],[-50.50888,1.90156],[-49.97408,1.73648],[-49.9471,1.04619],[-50.69925,0.22298],[-50.38821,-0.07844],[-48.62057,-0.23549],[-48.5845,-1.23781],[-47.82496,-0.58162],[-46.56658,-0.94103],[-44.9057,-1.55174],[-44.41762,-2.13775],[-44.58159,-2.69131],[-43.41879,-2.38311],[-41.47266,-2.91202],[-39.97867,-2.87305],[-38.50038,-3.70065],[-37.22325,-4.82095],[-36.45294,-5.1094],[-35.5978,-5.1495],[-35.23539,-5.46494],[-34.89603,-6.73819],[-34.72999,-7.34322],[-35.12821,-8.9964],[-35.63697,-9.64928],[-37.04652,-11.04072],[-37.68361,-12.17119],[-38.42388,-13.03812],[-38.67389,-13.05765],[-38.95328,-13.79337],[-38.8823,-15.66705],[-39.16109,-17.20841],[-39.26734,-17.86775],[-39.58352,-18.2623],[-39.76082,-19.59911],[-40.77474,-20.90451],[-40.94476,-21.93732],[-41.75416,-22.37068],[-41.98828,-22.97007],[-43.0747,-22.96769],[-44.64781,-23.35196],[-45.35214,-23.79684],[-46.47209,-24.08897],[-47.64897,-24.8852],[-48.49546,-25.87702],[-48.641,-26.6237],[-48.47474,-27.17591],[-48.66152,-28.18613],[-48.88846,-28.67412],[-49.58733,-29.22447],[-50.69687,-30.98447],[-51.57623,-31.7777],[-52.25608,-32.24537],[-52.7121,-33.19658],[-53.37366,-33.76838],[-53.65054,-33.202],[-53.20959,-32.72767],[-53.78795,-32.04724],[-54.57245,-31.49451],[-55.60151,-30.85388],[-55.97324,-30.88308],[-56.97603,-30.10969],[-57.62513,-30.21629]]]},\"properties\":{\"name\":\"Brazil\"}}]}","volume":"48","issue":"346","noUsgsAuthors":false,"publicationDate":"2018-07-05","publicationStatus":"PW","scienceBaseUri":"505bd283e4b08c986b32f856","contributors":{"authors":[{"text":"Foord, Eugene E.","contributorId":96319,"corporation":false,"usgs":true,"family":"Foord","given":"Eugene","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":365424,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sharp, William N.","contributorId":18751,"corporation":false,"usgs":true,"family":"Sharp","given":"William","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":365423,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Adams, J.W.","contributorId":101290,"corporation":false,"usgs":true,"family":"Adams","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":365425,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70208673,"text":"70208673 - 1984 - Cenozoic silicoflagellates from Rockall Plateau, Deep Sea Drilling Project Leg 81","interactions":[],"lastModifiedDate":"2020-02-25T07:27:50","indexId":"70208673","displayToPublicDate":"1984-02-24T13:01:12","publicationYear":"1984","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1996,"text":"Initial Reports of the D.S.D.P.","active":true,"publicationSubtype":{"id":10}},"title":"Cenozoic silicoflagellates from Rockall Plateau, Deep Sea Drilling Project Leg 81","docAbstract":"Eocene to Pliocene silicoflagellates from the Rockall Plateau are sparse to moderately abundant and include assem blages at the upper and lower boundaries of the Miocene Series. Relative paleotemperature values for silicoflagellates from the upper Miocene and lower Pliocene at DSDP Hole 552A based on quantitative data are cooler than are those from equatorial Pacific Sites 503 and 504, but show a matching warm peak at the Miocene/Pliocene boundary and a major cooling in the lower Pliocene.
Five new taxa of silicoflagellates are defined from Rockall Plateau assemblages: Corbisema panda Bukry, n. sp., Dictyochapulchella var. inflata Bukry, n. van, Distephanus xenus Bukry, n. sp., Mesocena apiculata evexa Bukry, n. subsp., and Naviculopsis pacifica pansa Bukry, n. subsp.
","language":"English","publisher":"Texas A&M","doi":"10.2973/dsdp.proc.81.112.1984","usgsCitation":"Bukry, D., 1984, Cenozoic silicoflagellates from Rockall Plateau, Deep Sea Drilling Project Leg 81: Initial Reports of the D.S.D.P., v. 81, p. 547-563, https://doi.org/10.2973/dsdp.proc.81.112.1984.","productDescription":"17 p.","startPage":"547","endPage":"563","numberOfPages":"17","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":488868,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2973/dsdp.proc.81.112.1984","text":"Publisher Index Page"},{"id":372566,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"otherGeospatial":"Location of Deep Sea Drilling Project Leg 81 Sites 552 to 555 and Leg 48 Sites 403 to 406 at Rockall Plateau, west of Scotland","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -25.751953125,\n 51.83577752045248\n ],\n [\n -19.6875,\n 51.83577752045248\n ],\n [\n -19.6875,\n 57.89149735271034\n ],\n [\n -25.751953125,\n 57.89149735271034\n ],\n [\n -25.751953125,\n 51.83577752045248\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"81","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Bukry, David 0000-0003-4540-890X dbukry@usgs.gov","orcid":"https://orcid.org/0000-0003-4540-890X","contributorId":3550,"corporation":false,"usgs":true,"family":"Bukry","given":"David","email":"dbukry@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":782957,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
]}