The physical characteristics of mountain streams differ from the uniform and conceptually well- defined open channels for which the analysis of solute transport has been oriented in the past and is now well understood. These physical conditions significantly influence solute transport behavior, as demonstrated by a transient storage model simulation of solute transport in a very small (0.0125 m3s−1) mountain pool-and-riffle stream. The application is to a carefully controlled and intensively monitored chloride injection experiment. The data from the experiment are not explained by the standard convection-dispersion mechanisms alone. A transient storage model, which couples dead zones with the one-dimensional convection-dispersion equation, simulates the general characteristics of the solute transport behavior and a set of simulation parameters were determined that yield an adequate fit to the data. However, considerable uncertainty remains in determining physically realistic values of these parameters. The values of the simulation parameters used are compared to values used by other authors for other streams. The comparison supports, at least qualitatively, the determined parameter values.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/WR019i003p00718","usgsCitation":"Bencala, K.E., and Walters, R.A., 1983, Simulation of solute transport in a mountain pool-and-riffle stream: A transient storage model: Water Resources Research, v. 19, no. 3, p. 718-724, https://doi.org/10.1029/WR019i003p00718.","productDescription":"7 p.","startPage":"718","endPage":"724","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":220904,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-07-09","publicationStatus":"PW","scienceBaseUri":"505b9084e4b08c986b319558","contributors":{"authors":[{"text":"Bencala, Kenneth E. kbencala@usgs.gov","contributorId":1541,"corporation":false,"usgs":true,"family":"Bencala","given":"Kenneth","email":"kbencala@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":361036,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walters, Roy A.","contributorId":74877,"corporation":false,"usgs":true,"family":"Walters","given":"Roy","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":361035,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011419,"text":"70011419 - 1983 - Tin granites of Seward Peninsula, Alaska","interactions":[],"lastModifiedDate":"2024-01-03T12:21:11.449223","indexId":"70011419","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1786,"text":"Geological Society of America Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Tin granites of Seward Peninsula, Alaska","docAbstract":"Seven granite plutons, spatially and genetically related to tin metalization, are exposed in a 170-km-long belt across northwestern Seward Peninsula, Alaska. These plutons are cupolas and epizonal composite stocks that consist of several textural varieties of biotite granite, including medium- to coarse-grained seriate biotite granite, porphyritic biotite granite with an aplitic groundmass, and fine- to medium-grained equigranular biotite granite. The common accessory minerals are fluorite, allanite, apatite, and zircon. Other accessory minerals that are locally present include tourmaline, sphene, opaque oxide minerals, and late-forming (deuteric) muscovite and chlorite. The granites range in major-element contents as follows: SiO2, 72.5% to 76.6%; A12O3, 12.7% to 14.3%; Na2O, 2.9% to 4.0%; K2O, 3.9% to 5.6%; and CaO, 0.6% to 1.2%. The sum of FeO + Fe2O3 + MgO ranges from 0.3% to 2.4%; and the K2O to Na2O ratio from 1.1 to 1.8. The 0.1% to 0.9% F and 0.01% to 0.2% Cl reflect the over-all volatile-rich nature of the granites. The granites contain average or below-average concentrations of Co, Sc, Cr, and Zn, and generally above-average to distinctly high concentrations of Th, U, Hf, and Ta. The large cations emphasize the evolved nature of the granites; the Rb/Sr ratio is as high as 90 in some samples. Initial 87Sr/86Sr ratios range from 0.708 to as high as 0.720. The three Rb-Sr isochrons defined by the data agree with K-Ar age determinations and show that the stocks were emplaced during the Late Cretaceous, between about 70 and 80 m.y. ago.
The field, petrologic, and geochemical data indicate that the plutons had a multistage origin that involved large-scale melting of sialic crust, emplacement of magmas derived from batholithic fractionation at depth, and subsequent evolution of these magmas to generate small volumes of more highly evolved residual magmas. Although evolution of the granite complexes was largely governed by crystal-melt fractionation, some minor-element variations in the highly evolved granites cannot be explained by this process. For example, the distribution of rubidium and the light rare-earths appears to have been influenced by volatile depletion at the final stages of crystallization. The field data, petrologic data, and variation trends, such as distinct shifts toward higher albite contents in the residual granites, suggest that the coexistence of a volatile phase was important in their evolution. These results require that models seeking to explain compositional gradients in high-level granite (rhyolite) systems fully consider the role of a coexisting volatile phase.
Syngenetic iron sulfides in sediments are formed from dissolved sulfide resulting from sulfate reduction and catabolism of organic matter by anaerobic bacteria. It has been shown that in recent marine sediments deposited below oxygenated waters there is a constant relationship between reduced sulfur and organic carbon which is generally independent of the environment of deposition. Reexamination of data from recent sediments from euxinic marine environments (e.g., the Black Sea) also shows a linear relationship between carbon and sulfur, but the slope is variable and the line intercepts the S axis at a value between 1 and 2 percent S. It is proposed that the positive S intercept is due to watercolumn microbial reduction of sulfate using metabolizable small organic molecules and the sulfide formed is precipitated and accumulates at the sediment-water interface. The variation in slope and intercept of the C to S plots for several cores and for different stratigraphic zones for the Black Sea can be interpreted in relation to thickness of the aqueous sulfide layer or thinness of the oxygen containing layer and to deposition rate, but also may be influenced by availability of iron, and perhaps the type of organic matter (Leventhal, 1979).
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(83)90097-2","issn":"00167037","usgsCitation":"Leventhal, J., 1983, An interpretation of carbon and sulfur relationships in Black Sea sediments as indicators of environments of deposition: Geochimica et Cosmochimica Acta, v. 47, no. 1, p. 133-137, https://doi.org/10.1016/0016-7037(83)90097-2.","productDescription":"5 p.","startPage":"133","endPage":"137","numberOfPages":"5","costCenters":[],"links":[{"id":220706,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"47","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea86e4b0c8380cd48909","contributors":{"authors":[{"text":"Leventhal, J.S.","contributorId":60640,"corporation":false,"usgs":true,"family":"Leventhal","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":361014,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011995,"text":"70011995 - 1983 - The relationship of acquisition systems to automated stereo correlation.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:34","indexId":"70011995","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3052,"text":"Photogrammetric Engineering and Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"The relationship of acquisition systems to automated stereo correlation.","docAbstract":"Today a concerted effort is being made to expedite the mapping process through automated correlation of stereo data. Stereo correlation involves the comparison of radiance (brightness) signals or patterns recorded by sensors. Conventionally, two-dimensional area correlation is utilized but this is a rather slow and cumbersome procedure. Digital correlation can be performed in only one dimension where suitable signal patterns exist, and the one-dimensional mode is much faster. Electro-optical (EO) systems, suitable for space use, also have much greater flexibility than film systems. Thus, an EO space system can be designed which will optimize one-dimensional stereo correlation and lead toward the automation of topographic mapping.-from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Photogrammetric Engineering and Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Colvocoresses, A., 1983, The relationship of acquisition systems to automated stereo correlation.: Photogrammetric Engineering and Remote Sensing, v. 49, no. 4, p. 539-544.","startPage":"539","endPage":"544","numberOfPages":"6","costCenters":[],"links":[{"id":220804,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"49","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baf21e4b08c986b324582","contributors":{"authors":[{"text":"Colvocoresses, A. P.","contributorId":82703,"corporation":false,"usgs":true,"family":"Colvocoresses","given":"A. P.","affiliations":[],"preferred":false,"id":362468,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011421,"text":"70011421 - 1983 - Evidence for a postglacial low relative sea-level stand in the drowned delta of the Merrimack River, Western Gulf of Maine","interactions":[],"lastModifiedDate":"2017-08-30T10:24:15","indexId":"70011421","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for a postglacial low relative sea-level stand in the drowned delta of the Merrimack River, Western Gulf of Maine","docAbstract":"A submerged delta of the Merrimack River, located offshore between Cape Ann, Massachusetts, and the New Hampshire border, indicates a postglacial low relative see-level stand of about -47 m. The low stand is inferred to date to 10,500 yr B.P., but a lack of age control makes this assignment uncertain. A curve based on a late Wisconsinan, high relative sea-level stand of +32m at 13,000 yr B.P., a low stand of -47m at 10,500 yr B.P., and younger radiocarbon dates related to sea-level rise indicates an early postglacial crustal rise of at least 5 m per century.
","language":"English","publisher":"Elsevier","publisherLocation":"Amsterdam, Netherlands","doi":"10.1016/0033-5894(83)90039-X","issn":"00335894","usgsCitation":"Oldale, R.N., Wommack, L.E., and Whitney, A., 1983, Evidence for a postglacial low relative sea-level stand in the drowned delta of the Merrimack River, Western Gulf of Maine: Quaternary Research, v. 19, no. 3, p. 325-336, https://doi.org/10.1016/0033-5894(83)90039-X.","productDescription":"12 p.","startPage":"325","endPage":"336","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":220978,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachussetts","city":"Cape Ann","otherGeospatial":"Gulf of Maine, Merrimack River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -71.1309814453125,\n 42.7379351246715\n ],\n [\n -70.77117919921874,\n 42.7379351246715\n ],\n [\n -70.77117919921874,\n 42.867912483915305\n ],\n [\n -71.1309814453125,\n 42.867912483915305\n ],\n [\n -71.1309814453125,\n 42.7379351246715\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"19","issue":"3","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a0d31e4b0c8380cd52e7f","contributors":{"authors":[{"text":"Oldale, R. N.","contributorId":92680,"corporation":false,"usgs":true,"family":"Oldale","given":"R.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":361060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wommack, L. E.","contributorId":45778,"corporation":false,"usgs":true,"family":"Wommack","given":"L.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":361058,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Whitney, A.B.","contributorId":61164,"corporation":false,"usgs":true,"family":"Whitney","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":361059,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011268,"text":"70011268 - 1983 - Hashemite, Ba(Cr,S)O4, a new mineral from Jordan.","interactions":[],"lastModifiedDate":"2013-02-14T10:10:15","indexId":"70011268","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","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":"Hashemite, Ba(Cr,S)O4, a new mineral from Jordan.","docAbstract":"Hashemite, Ba(Cr,S)O4, the isostructural chromate analogue of baryte, has been found in west-central Jordan. It is associated with chromian ettringite, apatite and calcite in a phosphatic carbonate rock analogous to the Hatrurim formation in Israel. The mineral is orthorhombic, Pnma, with a 9.112(2), b 5.541(1), c 7.343(1) A, Z = 4. Strongest XRD lines are 3.516(100), 3.171(80), 3.669(60), 2.175(60), 2.150(45) A. Hashemite occurs as small, euhedral, dark brown, commonly zoned crystals with an average D 4.59 g/cm3 and H. 31/2. It is biaxial positive; dark varieties have alpha 1.952(2), beta 1.960(2), gamma 1.977(2); light varieties have alpha 1.810(2), beta 1.813(2), gamma 1.824(2), 2Vgamma 35o-57o.-J.A.Z.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Mineralogist","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Mineralogical Society of America","issn":"0003004X","usgsCitation":"Hauff, P.L., Foord, E., and Rosenblum, S., 1983, Hashemite, Ba(Cr,S)O4, a new mineral from Jordan.: American Mineralogist, v. 68, no. 11-12, p. 1223-1225.","startPage":"1223","endPage":"1225","numberOfPages":"3","costCenters":[],"links":[{"id":220828,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":267375,"type":{"id":11,"text":"Document"},"url":"https://www.minsocam.org/ammin/AM68/AM68_1223.pdf"}],"volume":"68","issue":"11-12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f84e4b0c8380cd5ce5d","contributors":{"authors":[{"text":"Hauff, P. L.","contributorId":95470,"corporation":false,"usgs":true,"family":"Hauff","given":"P.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":360711,"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":360710,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rosenblum, S.","contributorId":85326,"corporation":false,"usgs":true,"family":"Rosenblum","given":"S.","email":"","affiliations":[],"preferred":false,"id":360709,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70010557,"text":"70010557 - 1983 - Paleohydrological methods and some examples from Swedish fluvial environments I. Cobble and boulder deposits","interactions":[],"lastModifiedDate":"2023-12-19T00:53:07.339161","indexId":"70010557","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1767,"text":"Geografiska Annaler, Series A","active":true,"publicationSubtype":{"id":10}},"title":"Paleohydrological methods and some examples from Swedish fluvial environments I. Cobble and boulder deposits","docAbstract":"This article establishes approximate empirical relations for determining the minimum unit stream power, bed shear stress and mean flow velocity capable of moving cobbles and boulders on streambeds. The derived equations then are used to estimate the minimum paleoflows that could have transported the boulders of two ancient fluvial deposits in Sweden. The flow estimates are compared with those made by more conventional hydraulic methods. Bankfull flows also are estimated for one of the two deposits, using various hydraulic equations.
A fluid sample from a shallow aquifer contaminated by coal-tar wastes was analyzed for organic bases. The sample consisted of a mixture of aqueous and oily-tar phases. The phases were separated by centrifugation and filtration. Organic bases were isolated from each phase by pH adjustment and solvent extraction. Organic bases in the oily-tar phase were further purified by neutral-alumina, micro-column adsorption chromatography. Separation and identification of the organic bases in each phase were achieved by using capillary gas chromatography-mass spectrometry-computer (GC-MS-COM) and probe distillation-high resolution mass spectrometry (PD-HRMS) techniques. Organic bases present in the aqueous phase included primary aromatic amines (such as aniline, alkylated anilines, and naphthylamines) as well as azaarenes (such as alkylated pyridines, quinolines, acridine, and benzoquinolines). The oily-tar phase contained acridine, benzacridines, dibenzacridines, and numerous other azaarenes, the elemental compositions of which were determined by PD-HRMS. Azaarenes in the oily-tar phase, varying in size from 6 to 12 rings, are reported for the first time. The origin and environmental significance of these compounds are discussed.
","language":"English","publisher":"Society of Environmental Toxicology and Chemistry","doi":"10.1002/etc.5620020304","issn":"07307268","usgsCitation":"Pereira, W.E., Rostad, C., Garbarino, J., and Hult, M.F., 1983, Groundwater contamination by organic bases derived from coal-tar wastes: Environmental Toxicology and Chemistry, v. 2, no. 3, p. 283-294, https://doi.org/10.1002/etc.5620020304.","productDescription":"12 p.","startPage":"283","endPage":"294","numberOfPages":"12","costCenters":[],"links":[{"id":220805,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"3","noUsgsAuthors":false,"publicationDate":"1983-07-01","publicationStatus":"PW","scienceBaseUri":"505a2d99e4b0c8380cd5bf48","contributors":{"authors":[{"text":"Pereira, W. E.","contributorId":46981,"corporation":false,"usgs":true,"family":"Pereira","given":"W.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":362470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rostad, C.E.","contributorId":50939,"corporation":false,"usgs":true,"family":"Rostad","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":362471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Garbarino, J.R.","contributorId":76326,"corporation":false,"usgs":true,"family":"Garbarino","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":362472,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hult, M. F.","contributorId":29817,"corporation":false,"usgs":true,"family":"Hult","given":"M.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":362469,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":1008657,"text":"1008657 - 1983 - The relationship between parental age and reproductive effort in the California Gull (Larus californicus)","interactions":[],"lastModifiedDate":"2023-08-25T15:29:33.674442","indexId":"1008657","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":982,"text":"Behavioral Ecology and Sociobiology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"The relationship between parental age and reproductive effort in the California Gull (Larus californicus)","title":"The relationship between parental age and reproductive effort in the California Gull (Larus californicus)","docAbstract":"Reproductive effort was compared among California gulls ranging in age from 3 to 18 years old. Results indicated that reproductive effort increased with parental age. Older parents (11–18 years old) invested more in foraging effort and in defense of offspring than did younger parents (<10 years old), and did so over a greater period of time. Increases with age in the efficiency of parenting could not be demonstrated. Increased levels of reproductive effort, therefore, appeared to be the main factor responsible for age-related increases in breeding success.
The higher levels of reproductive effort of old parents were associated with higher mortality. Thus, data support the prediction that a cost-benefit system of risk of mortality vs reproductive gain operates in this population. Higher levels of reproductive effort can increase an individual's reproductive success; however, it also increases the likelihood that it will die. Therefore, for the young parent, high risks of mortality involved in current production would be too costly (in terms of loss of future reproductive success) to justify the benefit of high current reproductive output. Parents achieve the highest likelihood of maximizing life-time reproductive output by increasing reproductive effort with age as the cost of mortality diminishes.
Data testing the relationship between parental age and reproductive effort demonstrate the existence of age-related variation in reproductive investment. They also demonstrate that the concept of reproductive value proposed by Fisher (1930) has validity as a framework which supports much of our theory on life history evolution.
","language":"English","publisher":"Springer Link","doi":"10.1007/BF00299919","usgsCitation":"Pugesek, B.H., 1983, The relationship between parental age and reproductive effort in the California Gull (Larus californicus): Behavioral Ecology and Sociobiology, v. 13, p. 161-171, https://doi.org/10.1007/BF00299919.","productDescription":"11 p.","startPage":"161","endPage":"171","numberOfPages":"11","costCenters":[{"id":481,"text":"Northern Rocky Mountain Science Center","active":true,"usgs":true}],"links":[{"id":130802,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6fe4b07f02db640f12","contributors":{"authors":[{"text":"Pugesek, Bruce H.","contributorId":22668,"corporation":false,"usgs":true,"family":"Pugesek","given":"Bruce","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":318372,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011394,"text":"70011394 - 1983 - Harding Iceland spar: A new δ18O−δ13C carbonate standard for hydrothermal minerals","interactions":[],"lastModifiedDate":"2024-02-15T15:03:04.570265","indexId":"70011394","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Harding Iceland spar: A new δ18O−δ13C carbonate standard for hydrothermal minerals","title":"Harding Iceland spar: A new δ18O−δ13C carbonate standard for hydrothermal minerals","docAbstract":"An isotopically homogeneous calcite, Harding Iceland Spar (HIS), having 6180 = +11.78 ± 0.07‰ (= +22.15‰ for CO2) and δ13C = −4.80 ± 0.02‰, has been prepared in quantities suitable for use as a working standard in mass spectrometric analysis. The isotopic values are well-suited for analysis of minerals of hydrothermal origin.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0009-2541(83)80008-4","issn":"01676695","usgsCitation":"Landis, G.P., 1983, Harding Iceland spar: A new δ18O−δ13C carbonate standard for hydrothermal minerals: Chemical Geology, v. 41, no. 1, p. 91-94, https://doi.org/10.1016/S0009-2541(83)80008-4.","productDescription":"4 p.","startPage":"91","endPage":"94","numberOfPages":"4","costCenters":[],"links":[{"id":221662,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f71e4b0c8380cd5cdbf","contributors":{"authors":[{"text":"Landis, G. P.","contributorId":102846,"corporation":false,"usgs":true,"family":"Landis","given":"G.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":360991,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011272,"text":"70011272 - 1983 - The use of MAGSAT data to determine secular variation","interactions":[],"lastModifiedDate":"2024-06-28T16:51:26.602642","indexId":"70011272","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"The use of MAGSAT data to determine secular variation","docAbstract":"A combined spatial and secular variation model of the geomagnetic field, labeled M061581, is derived from a selection of Magsat data. Secular variation (SV) data computed from linear fits to midnight hourly values from 19 magnetic observatories were also included in the analysis but were seen to have little effect on the model. The SV patterns from this new model are compared with those from the 1980 IGRF and with those for 1970 computed by the DGRF and with the 1960 patterns computed using the GSFC(12/66) model. Most of the features of the M061581 are identical in location and level with those of the 1980 IGRF. Together they confirm that the reversals in sign of field change seen over Asia and North America between 1965 and 1975 are reverting to the pre-1965 states. The M061581 model gives −32 nT/yr for the dipole decay rate, larger than the 70% increase already reported since 1965. This abnormally high value is interpreted as being a defect of the model because it appears to result from a much larger (−100 nT/yr) drop in field over the polar regions not indicated by the 1980 IGRF. This north polar decrease is shown to be of external origin as the result of a combination of the seasonal effect of the north polar ionospheric (counterclockwise) afternoon Sqp cell increasing in intensity from the beginning (November 1979) to the end (June 1980) of the Magsat data collection period, coupled with an enhancement of its effect as the orbit lowered from the 350– 550 km initial altitudes to near 200 km just prior to burnup. This experiment indicates that secular variation can be obtained from satellite data for intervals of less than a full year if corrections can be made for seasonal effects and that ‘annual snapshots’ of the field by a satellite would allow easy and accurate models of secular change without the use of any surface data.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB088iB07p05903","issn":"01480227","usgsCitation":"Cain, J., Frayser, J., Muth, L., and Schmitz, D., 1983, The use of MAGSAT data to determine secular variation: Journal of Geophysical Research Solid Earth, v. 88, no. B7, p. 5903-5910, https://doi.org/10.1029/JB088iB07p05903.","productDescription":"8 p.","startPage":"5903","endPage":"5910","numberOfPages":"8","costCenters":[],"links":[{"id":220893,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"B7","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bb15be4b08c986b3252eb","contributors":{"authors":[{"text":"Cain, J.C.","contributorId":68457,"corporation":false,"usgs":true,"family":"Cain","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":360720,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Frayser, J.","contributorId":83665,"corporation":false,"usgs":true,"family":"Frayser","given":"J.","affiliations":[],"preferred":false,"id":360721,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Muth, L.","contributorId":10035,"corporation":false,"usgs":true,"family":"Muth","given":"L.","email":"","affiliations":[],"preferred":false,"id":360718,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schmitz, D.","contributorId":45832,"corporation":false,"usgs":true,"family":"Schmitz","given":"D.","email":"","affiliations":[],"preferred":false,"id":360719,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70180849,"text":"70180849 - 1983 - Feeding activity, rate of consumption, daily ration and prey selection of major predators in the John Day Pool","interactions":[],"lastModifiedDate":"2017-02-03T15:04:29","indexId":"70180849","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":4,"text":"Other Government Series"},"title":"Feeding activity, rate of consumption, daily ration and prey selection of major predators in the John Day Pool","docAbstract":"No abstract available
","language":"English","publisher":"Bonneville Power Adminstration","publisherLocation":"Portland, OR","usgsCitation":"Gray, G., Palmer, D., Hilton, B., Connolly, P., Hansel, H., Beyer, J., and Sonnevil, G., 1983, Feeding activity, rate of consumption, daily ration and prey selection of major predators in the John Day Pool.","costCenters":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"links":[{"id":334741,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5895a4d6e4b0fa1e59bc1efb","contributors":{"authors":[{"text":"Gray, G.A.","contributorId":152182,"corporation":false,"usgs":false,"family":"Gray","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":662596,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Palmer, D.E.","contributorId":152169,"corporation":false,"usgs":false,"family":"Palmer","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":662597,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hilton, B.L.","contributorId":179086,"corporation":false,"usgs":false,"family":"Hilton","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":662598,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Connolly, P.J.","contributorId":70141,"corporation":false,"usgs":true,"family":"Connolly","given":"P.J.","email":"","affiliations":[{"id":654,"text":"Western Fisheries Research Center","active":true,"usgs":true}],"preferred":false,"id":662599,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hansel, H.C.","contributorId":34624,"corporation":false,"usgs":true,"family":"Hansel","given":"H.C.","email":"","affiliations":[],"preferred":false,"id":662600,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Beyer, J.M.","contributorId":152175,"corporation":false,"usgs":false,"family":"Beyer","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":662601,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Sonnevil, G.M.","contributorId":179077,"corporation":false,"usgs":false,"family":"Sonnevil","given":"G.M.","email":"","affiliations":[],"preferred":false,"id":662602,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":67531,"text":"i1450 - 1983 - Geologic map of the Cotterel Mountains and the northern Raft River valley, Cassia County, Idaho","interactions":[],"lastModifiedDate":"2023-02-24T16:30:05.113627","indexId":"i1450","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"1450","title":"Geologic map of the Cotterel Mountains and the northern Raft River valley, Cassia County, Idaho","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/i1450","usgsCitation":"Pierce, K.L., Covington, H., Williams, P.L., and McIntyre, D.H., 1983, Geologic map of the Cotterel Mountains and the northern Raft River valley, Cassia County, Idaho: U.S. Geological Survey IMAP 1450, 1 Plate: 44.44 x 39.25 inches, https://doi.org/10.3133/i1450.","productDescription":"1 Plate: 44.44 x 39.25 inches","costCenters":[],"links":[{"id":413402,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/imap/1450/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":106760,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_9248.htm","linkFileType":{"id":5,"text":"html"}},{"id":188537,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/imap/1450/report-thumb.jpg"}],"scale":"48000","datum":"National Geodetic Vertical Datum of 1929","country":"United States","state":"Idaho","county":"Cassia County","otherGeospatial":"Cotterel Mountains, Northern Raft River Valley","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -107,44.75 ], [ -107,44.8675 ], [ -106.86749999999999,44.8675 ], [ -106.86749999999999,44.75 ], [ -107,44.75 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b06e4b07f02db69a181","contributors":{"authors":[{"text":"Pierce, K. L.","contributorId":12404,"corporation":false,"usgs":true,"family":"Pierce","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":276577,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Covington, H. R.","contributorId":92671,"corporation":false,"usgs":true,"family":"Covington","given":"H. R.","affiliations":[],"preferred":false,"id":276580,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Williams, P. L.","contributorId":79109,"corporation":false,"usgs":true,"family":"Williams","given":"P.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":276579,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McIntyre, D. H.","contributorId":45726,"corporation":false,"usgs":true,"family":"McIntyre","given":"D.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":276578,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70170301,"text":"70170301 - 1983 - Volcanoes of the Cascade Range in North America","interactions":[],"lastModifiedDate":"2016-12-13T13:31:25","indexId":"70170301","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1435,"text":"Earthquake Information Bulletin (USGS)","active":true,"publicationSubtype":{"id":10}},"title":"Volcanoes of the Cascade Range in North America","language":"English","publisher":"U.S Geological Survey","publisherLocation":"Reston, VA","usgsCitation":"Foxworthy, B., and Hile, M., 1983, Volcanoes of the Cascade Range in North America: Earthquake Information Bulletin (USGS), v. 15, no. 2, p. 60-71.","productDescription":"12 p.","startPage":"60","endPage":"71","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":320093,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"571210bae4b0ef3b7ca6445f","contributors":{"authors":[{"text":"Foxworthy, B. L.","contributorId":45686,"corporation":false,"usgs":true,"family":"Foxworthy","given":"B. L.","affiliations":[],"preferred":false,"id":626810,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hile, M.","contributorId":168637,"corporation":false,"usgs":false,"family":"Hile","given":"M.","email":"","affiliations":[],"preferred":false,"id":626811,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70012036,"text":"70012036 - 1983 - NEW HORIZONS FOR THE NATIONAL HIGH-ALTITUDE PHOTOGRAPHY PROGRAM.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:08","indexId":"70012036","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"NEW HORIZONS FOR THE NATIONAL HIGH-ALTITUDE PHOTOGRAPHY PROGRAM.","docAbstract":"The National High-Altitude Photography Program (NHAP) is a multi-Federal agency activity to acquire uniform imagery for the establishment of a national high-altitude photographic data base. Since the inception of NHAP in 1980, black-and-white and color infrared stereoscopic imagery has been acquired for about 50% of the 3,000,000 square miles in the conterminous United States. An additional 40% of the 48-State area is under contract to private aerial survey firms, and the sixth and final contract to achieve complete once-over coverage will be awarded early in 1985. Extensive use has been made of the newly established data base. The participating agencies have begun studies to define the requirements for a maintenance program which would provide cyclic coverage of the conterminous United States and imagery for specific agency needs.","conferenceTitle":"Proceedings - Pecora VIII Symposium: Satellite Land Remote Sensing Advancements for the Eighties.","conferenceLocation":"Sioux Falls, ND, USA","language":"English","publisher":"Augustana Coll","publisherLocation":"Sioux Falls, SD, USA","usgsCitation":"Bermel, P.F., 1983, NEW HORIZONS FOR THE NATIONAL HIGH-ALTITUDE PHOTOGRAPHY PROGRAM., Proceedings - Pecora VIII Symposium: Satellite Land Remote Sensing Advancements for the Eighties., Sioux Falls, ND, USA.","startPage":"172","costCenters":[],"links":[{"id":222569,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a6144e4b0c8380cd718a7","contributors":{"authors":[{"text":"Bermel, Peter F.","contributorId":43915,"corporation":false,"usgs":true,"family":"Bermel","given":"Peter","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":362581,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012038,"text":"70012038 - 1983 - Sea ice melting in the marginal ice zone","interactions":[],"lastModifiedDate":"2024-06-28T16:13:08.959399","indexId":"70012038","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":9107,"text":"Journal of Geophysical Research - Oceans","active":true,"publicationSubtype":{"id":10}},"title":"Sea ice melting in the marginal ice zone","docAbstract":"The heat and salt flux boundary conditions together with the freezing curve relationship are a necessary component of any ice-sea water thermodynamic model. A neutral two-layer oceanic planetary boundary layer model that incorporates these boundary conditions gives the following results: The interfacial salinity is within 10% of the far-field salinity for conditions commonly encountered in the MIZ and depends only on the turbulent Lewis number and the far-field temperature and salinity. The predicted melt rates agree with the limited field observations, of the order of 1 m day−1. The Obukov lengths, determined from the predicted interface conditions and melt rates, are generally much greater than the Ekman layer thicknesses; hence, the surface buoyancy flux has little effect on the turbulence in the planetary boundary layer.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JC088iC05p02841","issn":"01480227","usgsCitation":"Josberger, E., 1983, Sea ice melting in the marginal ice zone: Journal of Geophysical Research - Oceans, v. 88, no. C5, p. 2841-2844, https://doi.org/10.1029/JC088iC05p02841.","productDescription":"4 p.","startPage":"2841","endPage":"2844","numberOfPages":"4","costCenters":[],"links":[{"id":222571,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"C5","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505b87dae4b08c986b3166b5","contributors":{"authors":[{"text":"Josberger, E.G.","contributorId":61161,"corporation":false,"usgs":true,"family":"Josberger","given":"E.G.","email":"","affiliations":[],"preferred":false,"id":362584,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012068,"text":"70012068 - 1983 - MASS STORAGE ESTIMATES FOR THE DIGITAL MAPPING AREA.","interactions":[],"lastModifiedDate":"2012-03-12T17:19:03","indexId":"70012068","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"MASS STORAGE ESTIMATES FOR THE DIGITAL MAPPING AREA.","docAbstract":"Modern computer technology offers cartographers the potential for transition from conventional film-oriented methods to digital techniques as the way of mapping in the future. Traditional methods utilizing silver halide aerial and lithographic films for storage are time proven, and film is a very high density archival storage media. In view of this, proponents of the digital era recognize that a breakthrough in mass storage technology may be required to attain a reasonable degree of computerization of the cartographic mapping and data management process.","largerWorkTitle":"Technical Papers of the American Congress of Surveying and Mapping","conferenceTitle":"Technical Papers of the 43rd Annual Meeting of the American Congress on Surveying and Mapping.","conferenceLocation":"Washington, DC, USA","language":"English","publisher":"American Congress on Surveying & Mapping","publisherLocation":"Falls Church, VA, USA","usgsCitation":"Light, D.L., 1983, MASS STORAGE ESTIMATES FOR THE DIGITAL MAPPING AREA., in Technical Papers of the American Congress of Surveying and Mapping, Washington, DC, USA, p. 152-164.","startPage":"152","endPage":"164","numberOfPages":"13","costCenters":[],"links":[{"id":222456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4abae4b0c8380cd68fc2","contributors":{"authors":[{"text":"Light, Donald L.","contributorId":28011,"corporation":false,"usgs":true,"family":"Light","given":"Donald","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":362655,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012069,"text":"70012069 - 1983 - Main field and recent secular variation.","interactions":[],"lastModifiedDate":"2013-02-23T14:16:17","indexId":"70012069","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3284,"text":"Reviews of Geophysics and Space Physics","active":true,"publicationSubtype":{"id":10}},"title":"Main field and recent secular variation.","docAbstract":"As Cain (1979) indicated might happen in the last IUGG quadrennial report, added resources were made available during the past few years and a real impulse was added to the geomagnetic work in the US by the launching of the MAGSAT Satellite. This new effort paid off in terms of new charts, additional long wavelength studies, and external source studies. As before, however, the future funding for new starts in geomagnetism does not look bright at the present time. A single MAGSAT in orbit a little more than seven months did wonders for main field (M.F.) charting, but did little or nothing for secular variation (S.V.) charting. It would take a number of repeated MAGSATS to help the S.V. picture. Meanwhile, the world magnetic observatory net and surface repeat stations remain as the main source of S.V. data. -from Author","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Reviews of Geophysics and Space Physics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","doi":"10.1029/RG021i003p00599","usgsCitation":"Alldredge, L., 1983, Main field and recent secular variation.: Reviews of Geophysics and Space Physics, v. 21, no. 3, p. 599-603, https://doi.org/10.1029/RG021i003p00599.","startPage":"599","endPage":"603","numberOfPages":"5","costCenters":[],"links":[{"id":268041,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/RG021i003p00599"},{"id":222457,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"21","issue":"3","noUsgsAuthors":false,"publicationDate":"2010-06-14","publicationStatus":"PW","scienceBaseUri":"505a4bf8e4b0c8380cd698ec","contributors":{"authors":[{"text":"Alldredge, L.R.","contributorId":53457,"corporation":false,"usgs":true,"family":"Alldredge","given":"L.R.","email":"","affiliations":[],"preferred":false,"id":362656,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012070,"text":"70012070 - 1983 - The Frontier Formation and mid- Cretaceous orogeny in the foreland of southwestern Wyoming","interactions":[],"lastModifiedDate":"2020-01-27T06:53:30","indexId":"70012070","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2789,"text":"Mountain Geologist","active":true,"publicationSubtype":{"id":10}},"title":"The Frontier Formation and mid- Cretaceous orogeny in the foreland of southwestern Wyoming","docAbstract":"Tectonism in SW Wyoming and adjoining areas, and fluctuations of sea level in the central USA during the mid-Cretaceous are represented by the regional stratigraphy of the Frontier Formation. The Frontier consists mainly of clastic rocks that were deposited in marine and nonmarine environments during latest Albian, Cenomanian, Turonian, and Coniacian time. -from Author","language":"English","publisher":"Rocky Mountain Association of Geologists","issn":"0027254X","usgsCitation":"Merewether, E.A., 1983, The Frontier Formation and mid- Cretaceous orogeny in the foreland of southwestern Wyoming: Mountain Geologist, v. 20, no. 4, p. 121-138.","productDescription":"18 p.","startPage":"121","endPage":"138","costCenters":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":222458,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Southwestern Wyoming ","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.1376953125,\n 40.9964840143779\n ],\n [\n -106.10595703125,\n 40.9964840143779\n ],\n [\n -106.10595703125,\n 43.88205730390537\n ],\n [\n -111.1376953125,\n 43.88205730390537\n ],\n [\n -111.1376953125,\n 40.9964840143779\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"20","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba73be4b08c986b32144b","contributors":{"authors":[{"text":"Merewether, E. Allen merewether@usgs.gov","contributorId":3586,"corporation":false,"usgs":true,"family":"Merewether","given":"E.","email":"merewether@usgs.gov","middleInitial":"Allen","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":780314,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70012101,"text":"70012101 - 1983 - Magnetic models of crystalline terrane: Accounting for the effect of topography","interactions":[],"lastModifiedDate":"2024-04-18T16:43:23.981428","indexId":"70012101","displayToPublicDate":"1983-01-01T00:00:00","publicationYear":"1983","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Magnetic models of crystalline terrane: Accounting for the effect of topography","docAbstract":"Igneous rocks commonly have large magnetic susceptibilities so that high topographic relief in crystalline terrane can produce significant anomalies in aeromagnetic surveys. Topographic anomalies are particularly significant in relatively undeformed volcanic terrane because young volcanic rocks generally have large natural remanent magnetizations as well as large susceptibilities. These anomalies commonly appear in aeromagnetic surveys as a complex pattern of high-amplitude, short-wavelength magnetic features that tend to obscure anomalies caused by deeper geologic sources. We have facilitated geologic interpretation of an aeromagnetic survey of the Oregon Cascade Range by calculating the magnetic field caused by a three-dimensional (3-D) topographic model. Maps of the calculated field are compared with observed aeromagnetic data both visually and with a numerical technique that produces a contour map of correlation coefficients for the model. These comparisons allow quick recognition of anomalies caused by normally or reversely magnetized topographic features and, more importantly, identification of anomalies caused by geologic features not obviously caused by the topography.
","language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.1190/1.1441437","issn":"00168033","usgsCitation":"Blakely, R., and Grauch, V.J., 1983, Magnetic models of crystalline terrane: Accounting for the effect of topography: Geophysics, v. 48, no. 11, p. 1551-1557, https://doi.org/10.1190/1.1441437.","productDescription":"7 p.","startPage":"1551","endPage":"1557","numberOfPages":"7","costCenters":[],"links":[{"id":221865,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"48","issue":"11","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4b76e4b0c8380cd69574","contributors":{"authors":[{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":362734,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grauch, V. J. S. 0000-0002-0761-3489","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":34125,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"","middleInitial":"J. S.","affiliations":[],"preferred":false,"id":362733,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}