No abstract available.
","language":"English","publisher":"American Society of Ichthyologists and Herpetologists","doi":"10.2307/1444906","usgsCitation":"Todd, T.N., 1986, Occurrence of white bass-white perch hybrids in Lake Erie: Copeia, v. 1986, no. 1, p. 196-199, https://doi.org/10.2307/1444906.","productDescription":"4 p.","startPage":"196","endPage":"199","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":128888,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Canada, United States","otherGeospatial":"Lake Erie","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -78.28472334303834,\n 43.16448956056334\n ],\n [\n -83.96465498366311,\n 43.16448956056334\n ],\n [\n -83.96465498366311,\n 41.053847454022815\n ],\n [\n -78.28472334303834,\n 41.053847454022815\n ],\n [\n -78.28472334303834,\n 43.16448956056334\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"1986","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4af4e4b07f02db6920a9","contributors":{"authors":[{"text":"Todd, Thomas N.","contributorId":42547,"corporation":false,"usgs":true,"family":"Todd","given":"Thomas","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":308685,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1001273,"text":"1001273 - 1986 - Winter ecology of bald eagles in southcentral Nebraska","interactions":[],"lastModifiedDate":"2020-03-27T07:10:42","indexId":"1001273","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3111,"text":"Prairie Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Winter ecology of bald eagles in southcentral Nebraska","docAbstract":"Approximately 200 bald eagles wintered along a 370-km section of the Platte and North Platte rivers in Nebraska during the winters of 1978-79 and 1979-80. A preponderance of the wintering eagles were adults, with the adult:subadult ratio highest during the harsh winter of 1978-79. Nocturnal roosts were located primarily in tree plantings near the river, with mean tree age at the roosts ranging from 39 to 84 years. Bald eagles utilized a diverse prey base that included fish, birds, and mammals. Remains of 56 prey species were identified from pellets; 76% of pellets contained birds, 34% mammals, and 11% fish. Eagles foraged principally on fish when ice covered less than 80% of channels and water levels were moderate to low. Waterfowl and mammals dominated the diet when the river was almost entirely frozen or water levels were high. Mallards, eastern cottontails, and carp were the principal avian, mammalian, and piscine prey, respectively. Eagles traveled long distances from the river to feed on field-feeding waterfowl when alternate prey were not available. Fish were underrated in pellets because body components are more digestible than other major prey consumed.","language":"English","usgsCitation":"Lingle, G., and Krapu, G., 1986, Winter ecology of bald eagles in southcentral Nebraska: Prairie Naturalist, v. 18, no. 2, p. 65-78.","productDescription":"14 p.","startPage":"65","endPage":"78","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133789,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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\"}}]}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4956e4b07f02db595812","contributors":{"authors":[{"text":"Lingle, G.R.","contributorId":26648,"corporation":false,"usgs":true,"family":"Lingle","given":"G.R.","email":"","affiliations":[],"preferred":false,"id":310781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krapu, Gary L.","contributorId":56994,"corporation":false,"usgs":true,"family":"Krapu","given":"Gary L.","affiliations":[],"preferred":false,"id":310782,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":1001395,"text":"1001395 - 1986 - Molt chronology of northern pintails in California","interactions":[],"lastModifiedDate":"2024-11-07T15:37:18.018205","indexId":"1001395","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","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":"Molt chronology of northern pintails in California","docAbstract":"Intensity and chronology of molt in 10 feather groups (head, neck, breast, belly, back, rump, side, scapular, tertial, and tail) were measured using percentages of developing feathers (pinfeathers) converted to molt scores (0-100) in samples plucked monthly from northern pintails (Anas acuta) collected by shooting from August through March 1980-82 in the Sacramento Valley, California. Data to supplement sample size of immatures were obtained from October 1982 through January 1983. Molt scores of the prealternate molt peaked (30-40% pinfeathers) in immature and adult females and adult males in October when nearly all feather groups were molting. The prealternate molt in immature males did not peak until November. Adult males nearly completed this molt by December; no new feather growth occurred after January. Immature males were still growing new neck, side, rump, scapular, and tertial feathers in December. Molt scores of the prebasic molt among adult and immature females peaked (30-40% new growth) in February in both years. The prealternate molt of breast and belly feathers (both sexes) peaked earlier (Sep) than molt of most other feathers (Oct). Increased molt scores in peak months were a function of a disproportionate increase of molt activity within each feather group and the number of feather groups with molt. Molt scores of the prebasic molt in adult females were less during December and January of the dry (1980-81) than the wet (1981-82) winter. Restriction or delay of molt may conserve energy or other nutrients during poor habitat conditions.
","language":"English","publisher":"Wiley","doi":"10.2307/3801488","usgsCitation":"Miller, M.R., 1986, Molt chronology of northern pintails in California: Journal of Wildlife Management, v. 50, no. 1, p. 57-64, https://doi.org/10.2307/3801488.","productDescription":"8 p.","startPage":"57","endPage":"64","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":133773,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","city":"Sacramento","otherGeospatial":"Sacramento Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -121.9196340147235,\n 38.816933501046236\n ],\n [\n -121.9196340147235,\n 38.360732419713315\n ],\n [\n -120.78925476315183,\n 38.360732419713315\n ],\n [\n -120.78925476315183,\n 38.816933501046236\n ],\n [\n -121.9196340147235,\n 38.816933501046236\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"50","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db69925c","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":310968,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":2000128,"text":"2000128 - 1986 - Interpretation and compendium of historical fire accounts in the Northern Great Plains","interactions":[],"lastModifiedDate":"2017-11-16T10:23:41","indexId":"2000128","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":1,"text":"Federal Government Series"},"seriesTitle":{"id":79,"text":"Resource Publication","active":false,"publicationSubtype":{"id":1}},"seriesNumber":"161","title":"Interpretation and compendium of historical fire accounts in the Northern Great Plains","docAbstract":"This interpretation and compendium of historical fire accounts in the northern Great Plains provides resource managers with background information to justify the study or use of fire in management and provides a reference of historic fire accounts for those without ready access to major library collections. Historical accounts of fire are critiqued to aid interpreting the compendium accounts. An interpretation is included by the author.Lightning-set fires were recorded in the literature far less frequently than were Indian-set fires. The kinds of fire most frequently reported were scattered, single events of short duration and small extent. Although fires occurred in wetlands, wetlands as well as sandy soil sites usually were good areas for escape from the effects of fire. Both Indians and wild animals were reportedly injured or killed during prairie fires. The frequency of historic fires was less evident in the literature than the descriptions of fire distribution in time and space. Indian-set fires were reported in every month except January. Fires occurred mainly in two periods, March through May with a peak in April, and July to early November with a peak in October. Grassland fuels burned readily within a few hours or days after rain and even during light snowfall.I agree with arguments that support the concept that Indians of the northern Great Plains generally did not subscribe to annual wholesale or promiscuous burning practices, but that they did purposely use fire as a tool to aid hunting and gathering of food and materials. Apparently, the northern plains Indians did not pattern their use of fire with the seasonal patterns of lightning fires. More likely they developed seasonal patterns of burning the prairies in harmony with bison (Bison bison) herd movements because the hunter-gatherer economy of these nomadic tribes was centrally focused and largely dependent on bison and bison ecology.","language":"English","publisher":"U.S. Fish and Wildlife Service","publisherLocation":"Washington, D.C.","usgsCitation":"Higgins, K., 1986, Interpretation and compendium of historical fire accounts in the Northern Great Plains: Resource Publication 161, 39 p.","productDescription":"39 p.","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":198740,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db6971be","contributors":{"authors":[{"text":"Higgins, K.F.","contributorId":55767,"corporation":false,"usgs":true,"family":"Higgins","given":"K.F.","email":"","affiliations":[],"preferred":false,"id":325139,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015689,"text":"70015689 - 1986 - Manganese biogeochemistry in a small Adirondack forested lake watershed","interactions":[],"lastModifiedDate":"2018-02-14T08:18:30","indexId":"70015689","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Manganese biogeochemistry in a small Adirondack forested lake watershed","docAbstract":"In September and October 1981, manganese (Mn) concentrations and pH were intensively monitored in a small forested lake watershed in the west-central Adirondack Mountains, New York, during two large acidic storms (each ∼5 cm rainfall, pH 4.61 and 4.15). The data were evaluated to identify biogeochemical pathways of Mn and to assess how these pathways are altered by acidic atmospheric inputs. Concentrations of Mn averaged 1.1 μg/L in precipitation and increased to 107 μg/L in canopy throughfall, the enrichment reflecting active biological cycling of Mn. Rain pH and throughfall Mn were negatively correlated, suggesting that foliar leaching of Mn was enhanced by rainfall acidity. The pulselike input of Mn to the forest floor in the high initial concentrations in throughfall (∼1000 μg/L) did not affect Mn concentrations in soil water (< 20 μg/L) or groundwater (usually < 40 μg/L), which varied little with time. In the inlet stream, Mn concentrations remained constant at 48 μg/L as discharge varied from 1.1 to 96 L/s. Manganese was retained in the vegetative cycle and regulated in the stream by adsorption in the soil organic horizon. The higher Mn levels in the stream may be linked to its high acidity (pH 4.2–4.3). Mixing of Mn-rich stream water with neutral lake water (pH 7.0) caused precipitation of Mn and deposition in lake sediment.
The San Juan Islands of Washington State form a geologically complex province located between the north Cascades, Vancouver Island, and the Olympic Peninsula. We have obtained 53 fission-track dates from the San Juan Islands province that help constrain its late Paleozoic to early Cenozoic tectonic and sedimentary history and its relationship to neighboring geologic terranes. The San Juan Islands can be divided into two main blocks separated by the Haro fault. South of the Haro fault, complexly deformed, metamorphosed, and probably exotic early Paleozoic to early Late Cretaceous rocks form four imbricate thrust plates separated by south- and east-dipping late Early to Late Cretaceous thrust faults. Reset zircon fission-track dates indicate that thrusting may have produced an upside-down geothermal gradient in the uppermost plate, the Decatur terrane. If present, this gradient was probably produced by conductive or frictional heating associated with a now-eroded overlying thrust fault and hot thrust plate. Cretaceous thrusting in the southern San Juan Islands was accompanied by uplift and resetting of apatite fission-track dates. In contrast to correlative rocks of the southern San Juan Islands, Upper Triassic to Lower Cretaceous rocks in and north of the Haro fault zone are essentially unmetamorphosed and only broadly folded. Apatite dates from the Upper Triassic Haro Formation and the Upper Jurassic and Lower Cretaceous Spieden Group indicate they did not participate in Late Cretaceous uplift of the southern San Juan Islands. Together with their basement (the Wrangellia terrane?), these rocks probably acted as a backstop to thrusting. The synorogenic Late Cretaceous Nanaimo basin formed north of the Haro fault in front of the advancing San Juan Islands thrust system. The age of Nanaimo deposition matches uplift (apatite) dates in the southern San Juan Islands, and detrital zircons from the Nanaimo Group yield dates consistent with southern San Juan Islands sources. Burial led to resetting of apatite dates in what is probably the deeper part of the Nanaimo basin.
","language":"English","publisher":"Canadian Science Publishing","doi":"10.1139/e86-127","issn":"00084077","usgsCitation":"Johnson, S.Y., Zimmerman, R., Naeser, C.W., and Whetten, J.T., 1986, Fission-track dating of the tectonic development of the San Juan Islands, Washington: Canadian Journal of Earth Sciences, v. 23, no. 9, p. 1318-1330, https://doi.org/10.1139/e86-127.","productDescription":"13 p.","startPage":"1318","endPage":"1330","costCenters":[],"links":[{"id":226103,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Washington","otherGeospatial":"San Juan Islands","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -123.03986234478636,\n 48.45420372262035\n ],\n [\n -123.01192042689229,\n 48.45190377164579\n ],\n [\n -122.97627039371784,\n 48.450625656554564\n ],\n 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]\n}","volume":"23","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a10c4e4b0c8380cd53dcd","contributors":{"authors":[{"text":"Johnson, S. Y.","contributorId":48572,"corporation":false,"usgs":true,"family":"Johnson","given":"S.","email":"","middleInitial":"Y.","affiliations":[],"preferred":false,"id":368979,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zimmerman, R.A.","contributorId":64304,"corporation":false,"usgs":true,"family":"Zimmerman","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":368980,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Naeser, C. W.","contributorId":17582,"corporation":false,"usgs":true,"family":"Naeser","given":"C.","middleInitial":"W.","affiliations":[],"preferred":false,"id":368977,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Whetten, J. T.","contributorId":26015,"corporation":false,"usgs":true,"family":"Whetten","given":"J.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":368978,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70014676,"text":"70014676 - 1986 - ARCTIC SEA ICE EXTENT AND DRIFT, MODELED AS A VISCOUS FLUID.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:31","indexId":"70014676","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2928,"text":"Ocean science and engineering","active":true,"publicationSubtype":{"id":10}},"title":"ARCTIC SEA ICE EXTENT AND DRIFT, MODELED AS A VISCOUS FLUID.","docAbstract":"A dynamic/thermodynamic numerical model of sea ice has been used to calculate the yearly cycle of sea ice thicknesses, concentrations, and velocities in the Arctic Ocean and surrounding seas. The model combines the formulations of two previous models, taking the thermodynamics and momentum equations from the model of Parkinson and Washington and adding the constitutive equation and equation of state from the model of Ling, Rasmussen, and Campbell. Simulated annually averaged ice drift vectors compare well with observed ice drift from the Arctic Ocean Buoy Program.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ocean science and engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"02752220","usgsCitation":"Ling, C., and Parkinson, C.L., 1986, ARCTIC SEA ICE EXTENT AND DRIFT, MODELED AS A VISCOUS FLUID.: Ocean science and engineering, v. 11, no. 1-2, p. 71-98.","startPage":"71","endPage":"98","numberOfPages":"28","costCenters":[],"links":[{"id":226101,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"11","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e634e4b0c8380cd47247","contributors":{"authors":[{"text":"Ling, Chi-Hai","contributorId":55154,"corporation":false,"usgs":true,"family":"Ling","given":"Chi-Hai","email":"","affiliations":[],"preferred":false,"id":368975,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parkinson, Claire L.","contributorId":20916,"corporation":false,"usgs":true,"family":"Parkinson","given":"Claire","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":368974,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014675,"text":"70014675 - 1986 - FASP, an analytic resource appraisal program for petroleum play analysis","interactions":[],"lastModifiedDate":"2013-01-21T15:41:34","indexId":"70014675","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"FASP, an analytic resource appraisal program for petroleum play analysis","docAbstract":"An analytic probabilistic methodology for resource appraisal of undiscovered oil and gas resources in play analysis is presented in a FORTRAN program termed FASP. This play-analysis methodology is a geostochastic system for petroleum resource appraisal in explored as well as frontier areas. An established geologic model considers both the uncertainty of the presence of the assessed hydrocarbon and its amount if present. The program FASP produces resource estimates of crude oil, nonassociated gas, dissolved gas, and gas for a geologic play in terms of probability distributions. The analytic method is based upon conditional probability theory and many laws of expectation and variance. ?? 1986.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0098-3004(86)90061-0","issn":"00983004","usgsCitation":"Crovelli, R., and Balay, R., 1986, FASP, an analytic resource appraisal program for petroleum play analysis: Computers & Geosciences, v. 12, no. 4, p. 423-475, https://doi.org/10.1016/0098-3004(86)90061-0.","startPage":"423","endPage":"475","numberOfPages":"53","costCenters":[],"links":[{"id":266186,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0098-3004(86)90061-0"},{"id":226100,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"12","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0e6de4b0c8380cd53451","contributors":{"authors":[{"text":"Crovelli, R. A.","contributorId":40969,"corporation":false,"usgs":true,"family":"Crovelli","given":"R. A.","affiliations":[],"preferred":false,"id":368972,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Balay, R.H.","contributorId":44177,"corporation":false,"usgs":true,"family":"Balay","given":"R.H.","affiliations":[],"preferred":false,"id":368973,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70014649,"text":"70014649 - 1986 - Determination of the dissolved anion composition of ancient lakes from fossil ostracodes","interactions":[],"lastModifiedDate":"2024-01-26T12:16:54.718549","indexId":"70014649","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Determination of the dissolved anion composition of ancient lakes from fossil ostracodes","docAbstract":"The mineralogy of evaporite and other precipitated minerals, together with geochemical studies, has provided traditional sources of information about the major dissolved ion composition (solutes) of ancient lakes. The paleocompositional resolving power of these methods is generally greatest in high-salinity lakes that precipitate numerous solute-sensitive evaporite minerals as opposed to dilute saline lakes that precipitate only a few minerals. Ostracodes live in dilute saline lakes where a species occurrence is determined by the relative proportions of the lake's major dissolved anions, so that each species describes specific areas on an anion trilinear diagram. Moreover, the upper salinity tolerance of each species appears to depend upon the types of major anions in solution and is therefore anion-specific. Knowledge about both anion and anion-salinity tolerances of an ostracode may ultimately provide a means of estimating absolute anion concentrations in paleolakes. Because ostracodes are common fossils in lake sediments, they provide an important new source of original paleocompositional information suitable for many geologic, climatic, geochemical, and paleontologic studies.
Two Cr-diopside Iherzolite xenoliths with kaersutite selvages, from Dish Hill, California, contain four types of solid and fluid inclusions that can be used to discriminate between actual mantle processes and processes acting upon a fragment of mantle as it is entrained and carried to the earth surface. On the basis of distribution, early formed inclusions are assigned to a process associated with emplacement of dikes in the mantle. The other types of inclusions were generated during ascent in the host basalt magma.
Solid and fluid inclusions are important sites of incompatible element concentrations in mantle xenoliths. Scientists assigning specific chemical signatures to mantle processes are confronted with an analytical dilemma: leaching of xenolith samples before analysis may destroy inclusions that are carrying intrinsic mantle components, whereas failure to leach the samples probably leaves a host-rock contaminant. Thin-section maps of these xenoliths show that the distribution and abundance of two types of solid inclusions are systematic. Through the use of these maps it is demonstrated that zones in xenoliths with the least amount of postentrainment contamination can be pinpointed, and the problems resulting from random leaching can be minimized.
The 5-22 mu m size accounted for 40-50% of annual production in each embayment, but production by phytoplanton >22 mu m ranged from 26% in the S reach to 54% of total phytoplankton production in the landward embayment of the N reach. A productivity index is derived that predicts daily productivity for each size class as a function of ambient irradiance and integrated chlorophyll a in the photic zone. For the whole phytoplankton community and for each size class, this index was constant at approx= 0.76 g C m-2 (g chlorophyll a Einstein)-1. The annual means of maximum carbon assimilation numbers were usually similar for the three size classes. Spatial and temporal variations in size-fractionated productivity are primarily due to differences in biomass rather than size-dependent carbon assimilation rates. -from Authors
","language":"English","publisher":"Springer","doi":"10.2307/1351944","issn":"01608347","usgsCitation":"Cole, B., Cloern, J., and Alpine, A., 1986, Biomass and productivity of three phytoplankton size classes in San Francisco Bay: Estuaries, v. 9, no. 2, p. 117-126, https://doi.org/10.2307/1351944.","productDescription":"10 p.","startPage":"117","endPage":"126","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":552,"text":"San Francisco Bay-Delta","active":false,"usgs":true},{"id":5079,"text":"Pacific Regional Director's Office","active":true,"usgs":true}],"links":[{"id":225732,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f18be4b0c8380cd4acbd","contributors":{"authors":[{"text":"Cole, B.E.","contributorId":66268,"corporation":false,"usgs":true,"family":"Cole","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":369458,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cloern, J. E.","contributorId":59453,"corporation":false,"usgs":true,"family":"Cloern","given":"J. E.","affiliations":[],"preferred":false,"id":369457,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alpine, A.E.","contributorId":6063,"corporation":false,"usgs":true,"family":"Alpine","given":"A.E.","affiliations":[],"preferred":false,"id":369456,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70014858,"text":"70014858 - 1986 - Danburite in evaporites of the Paradox basin, Utah.","interactions":[],"lastModifiedDate":"2024-05-21T11:09:12.65241","indexId":"70014858","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2450,"text":"Journal of Sedimentary Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Danburite in evaporites of the Paradox basin, Utah.","docAbstract":"Danburite (CaB 2 Si 2 O 8 ) has been found as nodules in Pennsylvanian age marine evaporites of the Paradox basin, Utah. Originally danburite had been known as a high-temperature mineral that occurs at numerous localities in igneous and metamorphic rocks. Since its discovery in water-insoluble residues from a Louisiana salt dome in 1937, it has been found in several other evaporites. The occurrence of danburite and its relation to the host rock in the Paradox basin evaporites indicates that it most likely formed by diagenetic reaction of boron-rich, high-salinity brines with constituents in the anhydrite host rock.
The Schwartzwalder uranium deposit formed at 69.3 + or - 1.1 m.y. in a complex fracture system during the inception of Laramide uplift of the Front Range in Colorado. Geologic and isotopic evidence demonstrates that the ore-forming fluids were in chemical equilibrium with the Proterozoic metavolcanic and metasedimentary host-rock terrane at depth and that the metals, sulfur, and carbonate deposited in the fractures were derived from the metamorphic rocks. The data are not consistent with chemical contributions from an unrecognized magma or from the overlying Phanerozoic sedimentary rocks. The protoliths for the metamorphic rocks were submarine volcanic rocks and related volcanogenic exhalative iron-formations and chert. Water trapped along the basement faults and in the regolith between the basement and the overlying Paleozoic sedimentary rocks interacted with the metavolcanic rocks to produce isotopically heavy fluids containing high concentrations of dissolved metals and carbonate. Calculated delta 18 O values for this fluid range from 4.3 to 8.2 per mil, indicating a low water/rock ratio in the source terrane.Two stages of alteration and three stages of vein mineralization are recorded in the Schwartzwalder deposit. At the onset of Laramide faulting, fluids migrated along the fracture systems to zones of low hydraulic potential. These fluids contained CO 2 and had a metastably large K/Na ratio; they altered the gneissic wall rocks to a carbonate-sericite assemblage, adding K (super +) and CO 2 and removing SiO 2 with little or no change in volume. As the fractures continued to open, CO 2 was evolved from the fluids, increasing the pH and superimposing a hematite-adularia alteration assemblage on the earlier alteration.The veins record three stages of mineralization, the second of which generated the high-grade uranium veins. Evidence for the stage I sulfide-carbonate mineralization is poorly preserved, but isotopic and temperature data from this stage are consistent with a trend in fluid composition culminating in stage II pitchblende deposition. Sudden, large movements along the faults caused episodic evolution of CO 2 from the fluid. This loss of CO 2 decreased the solubilities of carbonates and adularia and the stabilities of sulfur species in solution. Uranyl carbonate complexes dissociated and sulfur species in solution likely reduced the uranyl ions to produce stage II pitchblende. Carbonate, adularia, and sulfides dominated the vein mineralogy after deposition of pitchblende. Progressively lower delta 18 O values in vein carbonates suggest the mixing of cooler, less evolved, perhaps meteoric, waters during the later stages of mineralization. However, the fluid pressure remained high, as indicated by explosion breccias and inward collapse features which formed as fault movements produced sudden decreases in the confining pressure. Only the stage III carbonate-iron disulfide assemblage in the major postore segment of the Illinois fault may be the product of meteoric water alone.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.81.4.872","issn":"03610128","usgsCitation":"Wallace, A.R., and Whelan, J.F., 1986, The Schwarzwalder uranium deposit, III: Alteration, vein mineralization, light stable isotopes, and genesis of the deposit: Economic Geology, v. 81, no. 4, p. 872-888, https://doi.org/10.2113/gsecongeo.81.4.872.","productDescription":"17 p.","startPage":"872","endPage":"888","numberOfPages":"17","costCenters":[],"links":[{"id":225855,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"81","issue":"4","noUsgsAuthors":false,"publicationDate":"1986-07-01","publicationStatus":"PW","scienceBaseUri":"505ba8dde4b08c986b321ed9","contributors":{"authors":[{"text":"Wallace, A. R.","contributorId":59445,"corporation":false,"usgs":true,"family":"Wallace","given":"A.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":369478,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Whelan, J. F.","contributorId":45328,"corporation":false,"usgs":true,"family":"Whelan","given":"J.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":369477,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015041,"text":"70015041 - 1986 - Thalenite from Arizona.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:54","indexId":"70015041","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":738,"text":"American Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"Thalenite from Arizona.","docAbstract":"Thalenite occurs as a minor constituent of a single small pegmatite within an extensive area of granite a few miles S of Kingman, Arizona. Partly crystalline and partly metamict, this thalenite has composition Y3(Si3O10)(OH), with extensive substitution of Y by REE, especially Dy, Er and Yb. Upon heating, even at moderate T, both the crystalline and the metamict thalenite are converted to a phase with a structure corresponding with that of thortveitite, Sc2Si2O7.-J.A.Z.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"0003004X","usgsCitation":"Fitzpatrick, J., and Pabst, A., 1986, Thalenite from Arizona.: American Mineralogist, v. 71, no. 1-2, p. 188-193.","startPage":"188","endPage":"193","numberOfPages":"6","costCenters":[],"links":[{"id":223910,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba606e4b08c986b320e31","contributors":{"authors":[{"text":"Fitzpatrick, J.","contributorId":28744,"corporation":false,"usgs":true,"family":"Fitzpatrick","given":"J.","affiliations":[],"preferred":false,"id":369919,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Pabst, A.","contributorId":93203,"corporation":false,"usgs":true,"family":"Pabst","given":"A.","email":"","affiliations":[],"preferred":false,"id":369920,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70015054,"text":"70015054 - 1986 - Ground-water flow in low permeability environments","interactions":[],"lastModifiedDate":"2020-01-18T11:08:29","indexId":"70015054","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Ground-water flow in low permeability environments","docAbstract":"Certain geologic media are known to have small permeability; subsurface environments composed of these media and lacking well developed secondary permeability have groundwater flow sytems with many distinctive characteristics. Moreover, groundwater flow in these environments appears to influence the evolution of certain hydrologic, geologic, and geochemical systems, may affect the accumulation of pertroleum and ores, and probably has a role in the structural evolution of parts of the crust. Such environments are also important in the context of waste disposal. This review attempts to synthesize the diverse contributions of various disciplines to the problem of flow in low-permeability environments. Problems hindering analysis are enumerated together with suggested approaches to overcoming them. A common thread running through the discussion is the significance of size- and time-scale limitations of the ability to directly observe flow behavior and make measurements of parameters. These limitations have resulted in rather distinct small- and large-scale approaches to the problem. The first part of the review considers experimental investigations of low-permeability flow, including in situ testing; these are generally conducted on temporal and spatial scales which are relatively small compared with those of interest. Results from this work have provided increasingly detailed information about many aspects of the flow but leave certain questions unanswered. Recent advances in laboratory and in situ testing techniques have permitted measurements of permeability and storage properties in progressively “tighter” media and investigation of transient flow under these conditions. However, very large hydraulic gradients are still required for the tests; an observational gap exists for typical in situ gradients. The applicability of Darcy's law in this range is therefore untested, although claims of observed non-Darcian behavior appear flawed. Two important nonhydraulic flow phenomena, osmosis and ultrafiltration, are experimentally well established in prepared clays but have been incompletely investigated, particularly in undisturbed geologic media. Small-scale experimental results form much of the basis for analyses of flow in low-permeability environments which occurs on scales of time and size too large to permit direct observation. Such large-scale flow behavior is the focus of the second part of the review. Extrapolation of small-scale experimental experience becomes an important and sometimes controversial problem in this context. In large flow systems under steady state conditions the regional permeability can sometimes be determined, but systems with transient flow are more difficult to analyze. The complexity of the problem is enhanced by the sensitivity of large-scale flow to the effects of slow geologic processes. One-dimensional studies have begun to elucidate how simple burial or exhumation can generate transient flow conditions by changing the state of stress and temperature and by burial metamorphism. Investigation of the more complex problem of the interaction of geologic processes and flow in two and three dimensions is just beginning. Because these transient flow analyses have largely been based on flow in experimental scale systems or in relatively permeable systems, deformation in response to effective stress changes is generally treated as linearly elastic; however, this treatment creates difficulties for the long periods of interest because viscoelastic deformation is probably significant. Also, large-scale flow simulations in argillaceous environments generally have neglected osmosis and ultrafiltration, in part because extrapolation of laboratory experience with coupled flow to large scales under in situ conditions is controversial. Nevertheless, the effects are potentially quite important because the coupled flow might cause ultra long lived transient conditions. The difficulties associated with analysis are matched by those of characterizing hydrologic conditions in tight environments; measurements of hydraulic head and sampling of pore fluids have been done only rarely because of the practical difficulties involved. These problems are also discussed in the second part of this paper.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR022i008p01163","usgsCitation":"Neuzil, C.E., 1986, Ground-water flow in low permeability environments: Water Resources Research, v. 22, no. 8, p. 1163-1195, https://doi.org/10.1029/WR022i008p01163.","productDescription":"33 p.","startPage":"1163","endPage":"1195","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":224071,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"22","issue":"8","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505a1484e4b0c8380cd54a86","contributors":{"authors":[{"text":"Neuzil, Christopher E. 0000-0003-2022-4055 ceneuzil@usgs.gov","orcid":"https://orcid.org/0000-0003-2022-4055","contributorId":2322,"corporation":false,"usgs":true,"family":"Neuzil","given":"Christopher","email":"ceneuzil@usgs.gov","middleInitial":"E.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":369953,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70015055,"text":"70015055 - 1986 - Geochemical investigations of selected Eastern United States watersheds affected by acid deposition","interactions":[],"lastModifiedDate":"2020-01-20T06:42:20","indexId":"70015055","displayToPublicDate":"1986-01-01T00:00:00","publicationYear":"1986","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2545,"text":"Journal of the Geological Society","active":true,"publicationSubtype":{"id":10}},"title":"Geochemical investigations of selected Eastern United States watersheds affected by acid deposition","docAbstract":"The effects of acid deposition on surface waters in eastern United States watersheds having similar size, physiography, climate and land use are related to the composition of the underlying bedrock. Watersheds developed on greenstone, calcareous shale, sandstone, granite, and schist differ in their ability to neutralize acid deposition. Surface waters in watersheds developed on greenstone and calcareous shale are not discernably affected by acidification. Wastersheds developed on sand-stone have little capacity to neutralize acid rain; consequently, stream acidity is similar to that of precipitation. Watersheds developed on granite and schist are intermediate in their capacity to neutralize acid deposition. Bedrock composition appears to be the major property controlling surface-water chemistry in these systems; hydrologic flow paths and the nature of surficial materials and vegetation also influence chemical responses to acid deposition in watersheds.
Soil characteristics in a small steepland watershed underlain by schist in a rainy, tectonically active area in northwestern California show close associations with drainage-basin position and slope characteristics. Five soil-topography units based on these associations are defined in the study watershed. Spatial relationships of soil series, and patterns of soil development as indicated by B-horizon clay content and redness, reflect interactions between pedogenesis and erosion. General soil-topography patterns include: (1) decreases in soil-development moving from low-order to higher-order stream vallyes; and (2) more developed soils on north-facing as opposed to south-facing slopes. Decreases in soil-profile development moving from slopes near low-order streams to slopes near higher-order streams approximately correlate with increases in gradient, vertical relief, and drainage density, and reflect a more vigorous stripping of regolith by erosion on the slopes near the higher-order streams. The larger percentage of area covered by the more developed soils on north-facing as opposed to south-facing slopes appears to reflect a contrast in the way dominant erosional processes interact with pedogenic processes.
Roadcuts on middle and upper slopes show soil discontinuities indicative of disturbance by block slides or slumps or both. Roadcuts on lower slopes show disrupted soils in small bedrock hollows that could have been created by rapid, shallow landslides or by the pulled-up root wads of toppled trees. Soil-profile characteristics and soil-topography patterns in the study area demonstrate that both erosional and pedogenic processes need to be considered when interpreting characteristics of hillslope soils.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7061(86)90032-7","issn":"00167061","usgsCitation":"Marron, D., and Popenoe, J., 1986, A soil catena on schist in northwestern California: Geoderma, v. 37, no. 4, p. 307-324, https://doi.org/10.1016/0016-7061(86)90032-7.","productDescription":"18 p.","startPage":"307","endPage":"324","costCenters":[],"links":[{"id":224382,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -124.37772718842501,\n 41.622450655428366\n ],\n [\n -124.37772718842501,\n 40.910176622566496\n ],\n [\n -123.22859344022442,\n 40.910176622566496\n ],\n [\n -123.22859344022442,\n 41.622450655428366\n ],\n [\n -124.37772718842501,\n 41.622450655428366\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"37","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e59ce4b0c8380cd46e81","contributors":{"authors":[{"text":"Marron, D. C.","contributorId":16031,"corporation":false,"usgs":true,"family":"Marron","given":"D. C.","affiliations":[],"preferred":false,"id":371479,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Popenoe, J.H.","contributorId":51468,"corporation":false,"usgs":true,"family":"Popenoe","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":371480,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}