Eighteen pyrite and twelve marcasite samples which have different provenances have been investigated to determine the systematics of the influence of mineralogical and geological factors on the 57Fe Mössbauer spectra at 298 K. The following results have been obtained: there is no ambiguity in distinguishing single phase pyrite from single phase marcasite by means of 57Fe Mössbauer spectroscopy at 298 K. At 298 K the average electric quadrupole splitting, 〈ΔEQ〉, and average isomer shift, 〈δ〉, with respect to Fe metal, are 0.6110 ± 0.0030 mm s−1 and 0.313 ± 0.008 mm s−1, respectively, for the 18 pyrites; 〈ΔEQ〉 = 0.5030 ± 0.0070 mm s−1 and 〈δ〉 = 0.2770 ± 0.0020 mm s−1 for the 12 marcasites. At 77 K, ΔEQ is 0.624 mm s−1 for pyrite and 0.508 mm s−1 for marcasite. In distinguishing pyrites from marcasites, spectra obtained at 77 K are not warranted.
\nThe Mössbauer parameters of pyrite and marcasite exhibit appreciable variations, which bear no simple relationship to the geological environment in which they occur but appear to be selectively influenced by impurities, especially arsenic, in the pyrite lattice. Quantitative and qualitative determinations of pyrite/marcasite mechanical mixtures are straightforward at 298 K and 77 K but do require least-squares computer fittings and are limited to accuracies ranging from ±5 to ±15 per cent by uncertainties in the parameter values of the pure phases. The methodology and results of this investigation are directly applicable to coals for which the presence and relative amounts of pyrite and marcasite could be of considerable genetic significance.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(82)90028-X","issn":"00167037","usgsCitation":"Evans, B., Johnson, R.G., Senftle, F.E., Cecil, C.B., and Dulong, F., 1982, The 57Fe Mössbauer parameters of pyrite and marcasite with different provenances: Geochimica et Cosmochimica Acta, v. 46, no. 5, p. 761-775, https://doi.org/10.1016/0016-7037(82)90028-X.","productDescription":"15 p.","startPage":"761","endPage":"775","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":480276,"rank":1,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://hdl.handle.net/2027.42/24003>","text":"External Repository"},{"id":220852,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba657e4b08c986b321085","contributors":{"authors":[{"text":"Evans, B.J.","contributorId":23687,"corporation":false,"usgs":true,"family":"Evans","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":361689,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, R. G.","contributorId":39350,"corporation":false,"usgs":true,"family":"Johnson","given":"R.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":361690,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Senftle, F. E.","contributorId":47788,"corporation":false,"usgs":true,"family":"Senftle","given":"F.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":361691,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cecil, C. B. 0000-0002-9032-1689","orcid":"https://orcid.org/0000-0002-9032-1689","contributorId":62204,"corporation":false,"usgs":true,"family":"Cecil","given":"C.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":361692,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dulong, F. 0000-0001-7388-647X","orcid":"https://orcid.org/0000-0001-7388-647X","contributorId":74880,"corporation":false,"usgs":true,"family":"Dulong","given":"F.","affiliations":[],"preferred":false,"id":361693,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70011880,"text":"70011880 - 1982 - Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis","interactions":[],"lastModifiedDate":"2024-07-16T14:47:54.258421","indexId":"70011880","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":6453,"text":"Journal of Geophysical Research Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis","docAbstract":"Seismic refraction data with a dense areal distribution were collected to study the seismic structure of Mount Hood and the surrounding region. This area is typical of Cascade volcanoes and is geologically quite complex. The prime goals of this project were to search for velocity variations in the upper crustal rocks and to determine if the velocity of these rocks is anisotropic. A new system, including 100 remote recording units, was developed to facilitate the collection of data in this type of survey. The data collected in this study reveal a large variation in velocity and thickness of the uppermost crustal rocks that is probably typical of the High Cascade province. A regional structural pattern surrounding Mount Hood, where there is a marked thinning of low-velocity near-surface rocks, suggests that the present edifice of Mount Hood lies on top of a much larger structure, possibly the roof of a large batholith that was emplaced prior to the eruption of the volcanic rocks that form the modern mountain. A straightforward time term analysis of the data reveals this structure. When the time terms are used to correct the travel time observations for the variation in structure under each station, the remaining set of residuals indicates a variation of travel time with azimuth. While a systematic error in the time term reduction cannot be ruled out, this variation is probably the result of anisotropic velocity structure in the underlying refractor. The alignment of the direction of maximum velocity with the direction of maximum principal stress and the decrease in anisotropy with depth suggest that the anisotropic velocity structure is related to the opening and closing of fractures in the present stress field. The direction of maximum velocity is about N25°W, and the degree of anisotropy appears to vary with depth from about 3% near the surface to zero at depths below 8 km.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB01p00339","issn":"01480227","usgsCitation":"Kohler, W., Healy, J.H., and Wegener, S., 1982, Upper crustal structure of the Mount Hood, Oregon, region as revealed by time term analysis: Journal of Geophysical Research Solid Earth, v. 87, no. B1, p. 339-355, https://doi.org/10.1029/JB087iB01p00339.","productDescription":"17 p.","startPage":"339","endPage":"355","numberOfPages":"17","costCenters":[],"links":[{"id":221135,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B1","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505bbd56e4b08c986b328f8e","contributors":{"authors":[{"text":"Kohler, W.M.","contributorId":62999,"corporation":false,"usgs":true,"family":"Kohler","given":"W.M.","email":"","affiliations":[],"preferred":false,"id":362190,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Healy, J. H.","contributorId":48968,"corporation":false,"usgs":true,"family":"Healy","given":"J.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":362189,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wegener, S.S.","contributorId":67654,"corporation":false,"usgs":true,"family":"Wegener","given":"S.S.","email":"","affiliations":[],"preferred":false,"id":362191,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011560,"text":"70011560 - 1982 - Late Eocene- Oligocene magnetostratigraphy and biostratigraphy at South Atlantic DSDP site 522","interactions":[],"lastModifiedDate":"2024-02-01T11:59:47.73662","indexId":"70011560","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Late Eocene- Oligocene magnetostratigraphy and biostratigraphy at South Atlantic DSDP site 522","docAbstract":"Upper Eocene to lowest Miocene sediments recovered at Deep Sea Drilling Project (DSDP) Site 522 in the South Atlantic Ocean allow direct calibration of magnetostratigraphy and calcareous plankton biostratigraphy. The results from Site 522 show that the Eocene/Oligocene boundary occurs in the reversed interval of magnetic Chron C13 (= C13R) and that the Oligocene/IMiocene boundary probably occurs in the upper part of Chron C6C.
Petrographic and geochemical studies have yielded information on the time-space relationships of the post-depositional alteration of detrital titanomagnetite (Ti-mt) in fine- to medium-grained sandstone from unoriented core samples (taken below the water table at depths of 30–45 m) of the Miocene Catahoula Sandstone, south Texas. Aqueous sulfide introduced from sour gas reservoirs along a growth fault into part of the Catahoula shortly after deposition resulted in the replacement at the periphery of Ti-mt grains by iron disulfide (FeS2) minerals. Remnants of Ti-mt in cores of the partly sulfidized grains show no evidence of earlier hematitic oxidation. After sulfidization, part of the sandstone body was invaded by oxygenated groundwaters flowing down a shallowly inclined (1°) hydrologic gradient. The boundary between oxidized and reduced facies is clearly defined by the distribution of ferric and ferrous iron minerals, and the concentrations of Mo, U, and Se. In oxidized (light-red) strata that had not been previously subjected to sulfidic-reducing conditions but that are correlative with strata containing FeS2 minerals, Ti-mt has been partly to entirely replaced pseudomorphously by hematite to form martite. The absence of hematitic alteration of Ti-mt in the reduced facies is strong evidence that martite in the oxidized facies formed after deposition.
The solubility of quartz in water from 25° to 900°C at specific volume of the solvent ranging from about 1 to 10 and from 300° to 600°C at specific volume of the solvent ranging from about 10 to 100 is given by an empirically derived equation of the form: log m = A + B(log V) + C(log V)2 where m is the molal silica concentration, V is the specific volume of pure water, and A = −4.66206 + 0.0034063T + 2179.7T−1 − 1.1292 × 106T−2 + 1.3543 × 108T−3B = −0.0014180T— 806.97T−1C = 3.9465 × 10−4T T is temperature in kelvins. The experimental data used in formulating the empirical relation ranged in pressure from 1 bar at 25°C to about 10,000 bars at 900°C, and the lowest pressure in the low-density steam region was about 30 bars. According to the above equation, the average difference in molality between 518 measured and calculated solubilities is −0.016 m with a standard deviation of 0.089.
","language":"English","publisher":"Elsevier","doi":"10.1016/0016-7037(82)90135-1","issn":"00167037","usgsCitation":"Fournier, R.O., and Potter, R.W., 1982, An equation correlating the solubility of quartz in water from 25° to 900°C at pressures up to 10,000 bars: Geochimica et Cosmochimica Acta, v. 46, no. 10, p. 1969-1973, https://doi.org/10.1016/0016-7037(82)90135-1.","productDescription":"5 p.","startPage":"1969","endPage":"1973","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":221241,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"46","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ea41e4b0c8380cd48731","contributors":{"authors":[{"text":"Fournier, Robert O.","contributorId":73202,"corporation":false,"usgs":true,"family":"Fournier","given":"Robert","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":361416,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Potter, Robert W. II","contributorId":67899,"corporation":false,"usgs":true,"family":"Potter","given":"Robert","suffix":"II","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":361415,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70010391,"text":"70010391 - 1982 - Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin","interactions":[],"lastModifiedDate":"2012-03-12T17:18:25","indexId":"70010391","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin","docAbstract":"Stability analysis, based on infinite slope analysis and geotechnical data from a suite of 34 cores collected from the continental slope between Wilmington and Lindenkohl Canyons, indicates that the Quaternary surficial silty clay sediments on gentle slopes are stable; that sediment stability on steeper slopes (14??-19??) is marginal; and that on precipitous slopes (>50??) only a thin veneer of unconsolidated sediments can exist. Small earthquake-induced accelerations or the effects of internal waves can result in slope sediment instabilities. ?? 1982 A. M. Dowden, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geo-Marine Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF02462753","issn":"02760460","usgsCitation":"Almagor, G., Bennett, R., Mc Gregor, B., and Shephard, L., 1982, Stability studies of surficial sediments in the Wilmington-Lindenkohl Canyons area, eastern U.S. margin: Geo-Marine Letters, v. 2, no. 3-4, p. 129-134, https://doi.org/10.1007/BF02462753.","startPage":"129","endPage":"134","numberOfPages":"6","costCenters":[],"links":[{"id":204898,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF02462753"},{"id":218947,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b965ee4b08c986b31b478","contributors":{"authors":[{"text":"Almagor, G.","contributorId":16973,"corporation":false,"usgs":true,"family":"Almagor","given":"G.","email":"","affiliations":[],"preferred":false,"id":358812,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bennett, R.H.","contributorId":34649,"corporation":false,"usgs":true,"family":"Bennett","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":358813,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mc Gregor, B.A.","contributorId":82054,"corporation":false,"usgs":true,"family":"Mc Gregor","given":"B.A.","email":"","affiliations":[],"preferred":false,"id":358815,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shephard, L.E.","contributorId":53940,"corporation":false,"usgs":true,"family":"Shephard","given":"L.E.","email":"","affiliations":[],"preferred":false,"id":358814,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011669,"text":"70011669 - 1982 - Contemporary block tectonics: California and Nevada","interactions":[],"lastModifiedDate":"2024-07-16T14:58:19.264656","indexId":"70011669","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"Contemporary block tectonics: California and Nevada","docAbstract":"Well-determined fault plane solution and the gross pattern of late-Cenozoic faulting in California and Nevada show a systematic relation between the orientation of fault planes and slip directions. In general, normal faults have northerly strikes, reverse faults have easterly strikes, and dextral and sinstral strike slip faults have northwesterly and northeasterly strikes, respectively. Kinematically, this relation is consistent with the response of clusters of fault-bounded crustal blocks to a regional stress field generated by the relative motion between the Pacific and North American plates. In this stress field, the greatest and least principal (compressive) stresses are restricted to northerly and easterly striking vertical planes, respectively. Clusters of crustal blocks bound by faults having the above attitudes form three basic regimes: (1) a spreading regime with a combination of normal and conjugate, strike slip faults, (2) a converging regime with a combination of reverse and conjugate, strike slip faults, and (3) a wrench regime with sets of subparallel, throughgoing, northwest striking (dextral) faults or northeast striking (sinstral) faults. These three regimes are typified by faulting patterns in the Basin and Range province (spreading), the Transverse Ranges (converging), and the San Andreas-Garlock fault systems (wrench), respectively. The gross deformation of each regime resulting from relative displacements between individual blocks is characterized by north-south shortening and east-west extension with the ratio of extensional to shortening strains (and the areal dilitation) decreasing systematically from spreading to wrench to compressional regimes. The wrench regime involves a component of net rotational deformation (clockwise for dextral slip and counter-clockwise for sinstral slip), while deformation of the spreading and converging regimes is irrotational. Local deviations from regional kinematic directions are concentrated along the boundaries between regimes reflecting the mismatch in gross deformation fields between regimes. Maximum principal and shear stress magnitudes will increase systematically from spreading to wrench to converging regimes provided that fault slip is controlled by frictional strength (Byerlee's law) along preexisting fractures and that pore pressure in the brittle crust is laterally uniform. A minimum strength difference between active, block-bounding faults and block interiors is 15–30%. Simple arrangements of such block clusters mimic the gross kinematic pattern of Quaternary faulting in California and Nevada. Some implications for contemporary tectonics emphasized by this model involve the westward displacement of the Sierra Nevada block.with respect to the stable interior of the North American plates, oblique thrusting of the Salinian block over the Pacific plate, and a progressive increase in the offset of the San Andreas fault represented by the ‘big bend’ through the Transverse Ranges.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB07p05433","issn":"01480227","usgsCitation":"Hill, D., 1982, Contemporary block tectonics: California and Nevada: Journal of Geophysical Research Solid Earth, v. 87, no. B7, p. 5433-5450, https://doi.org/10.1029/JB087iB07p05433.","productDescription":"18 p.","startPage":"5433","endPage":"5450","numberOfPages":"18","costCenters":[],"links":[{"id":221768,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B7","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"5059fa4be4b0c8380cd4da18","contributors":{"authors":[{"text":"Hill, D.P.","contributorId":27432,"corporation":false,"usgs":true,"family":"Hill","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":361669,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011705,"text":"70011705 - 1982 - Stolzite from Tsumeb.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:33","indexId":"70011705","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2749,"text":"Mineralogical Record","active":true,"publicationSubtype":{"id":10}},"title":"Stolzite from Tsumeb.","docAbstract":"The world's largest known crystal of stolzite (1.3 X 1.3 X 2.5 cm) is described. It is associated with tennantite and quartz, and is from the Tsumeb mine, Tsumeb, Namibia. Forms present include (001), (111), (101), (122), and (212). Spectrographic analyses indicate a nearly end-member composition with Mo, Fe, Ba, Ca, and Mn present in trace amounts only. This stolzite fluoresces lemon- yellow and red in shortwave and longwave UV light, respectively.-G.W.R.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Mineralogical Record","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00264628","usgsCitation":"Foord, E., and Conklin, N.M., 1982, Stolzite from Tsumeb.: Mineralogical Record, v. 13, no. 3, p. 149-150.","startPage":"149","endPage":"150","numberOfPages":"2","costCenters":[],"links":[{"id":221309,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"13","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b985fe4b08c986b31bfd8","contributors":{"authors":[{"text":"Foord, E.E.","contributorId":86835,"corporation":false,"usgs":true,"family":"Foord","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":361767,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conklin, N. M.","contributorId":100398,"corporation":false,"usgs":true,"family":"Conklin","given":"N.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":361768,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011632,"text":"70011632 - 1982 - Evaluation of 0.46- to 2.36-mu m multispectral scanner images of the east Tintic mining district, Utah, for mapping hydrothermally altered rocks","interactions":[],"lastModifiedDate":"2024-01-12T16:47:28.042972","indexId":"70011632","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of 0.46- to 2.36-mu m multispectral scanner images of the east Tintic mining district, Utah, for mapping hydrothermally altered rocks","docAbstract":"Airborne multispectral scanner images recorded in the 0.46- to 2.36-mu m region for the East Tintic mining district, Utah, were evaluated to determine their usefulness for distinguishing six types of hydrothermally altered rocks from a wide range of sedimentary and igneous rock types. Limestone, dolomite, and argillaceous rocks were of particular interest because these have spectral reflectance features that might make them difficult to separate from some of the altered rocks when these images are used.The laboratory and field evaluation of a color ratio composite image, supported by in situ spectral reflectance measurements and an alteration map compiled from a published map, shows that silicified, argillized, and pyritized rocks can be mapped in detail utilizing an intense OH absorption band centered near 2.2 mu m. This absorption band is absent or weak in most of the unaltered rocks. However, the 2.2-mu m band is also weak in the reflectance spectra representing the other three types of altered rocks--hydrothermal dolomite, calcitic volcanic rocks, and chloritized rocks. Consequently, these altered rocks are not consistently distinguished from unaltered rocks in these images. Furthermore, very pure dolomite spectra have an intense 2.33- mu m CO (super -3) absorption band that is not distinguishable from the 2.2-mu m band in these images; therefore, the pure dolomite exposures were distinguished from the silicified, argillized, and pyritized rocks through field checking. The 2.33-mu m absorption feature is weak in spectra for less pure carbonate rocks. Separation of these altered rocks and local exposures of argillaceous rocks also posed problems because of their mineralogic and hence spectral reflectance similarities.These results are especially important for estimating the potential of the 1.6- and 2.2-mu m bands in the Landsat D thematic mapper for mapping altered rocks. Here, as we found in an earlier study in south-central Nevada, limonite-poor hydrothermally altered rocks that were not consistently distinguished in Landsat multispectral scanner images should be detectable using these two thematic mapper bands in combination with other bands at shorter wave-lengths. However, distinguishing among some hydrothermally altered and unaltered rocks will require other approaches, including analysis of high-spectral resolution measurements in the 2.0- and 2.5-mu m region and multispectral thermal infrared data.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.77.2.441","issn":"03610128","usgsCitation":"Rowan, L.C., and Kahle, A., 1982, Evaluation of 0.46- to 2.36-mu m multispectral scanner images of the east Tintic mining district, Utah, for mapping hydrothermally altered rocks: Economic Geology, v. 77, no. 2, p. 441-452, https://doi.org/10.2113/gsecongeo.77.2.441.","productDescription":"12 p.","startPage":"441","endPage":"452","numberOfPages":"12","costCenters":[],"links":[{"id":221187,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"77","issue":"2","noUsgsAuthors":false,"publicationDate":"1982-04-01","publicationStatus":"PW","scienceBaseUri":"505a0c0ae4b0c8380cd529ec","contributors":{"authors":[{"text":"Rowan, L. C.","contributorId":40584,"corporation":false,"usgs":true,"family":"Rowan","given":"L.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":361581,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kahle, A.B.","contributorId":36928,"corporation":false,"usgs":true,"family":"Kahle","given":"A.B.","email":"","affiliations":[],"preferred":false,"id":361580,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011571,"text":"70011571 - 1982 - Exotic terranes of western California","interactions":[],"lastModifiedDate":"2012-03-12T17:18:31","indexId":"70011571","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2840,"text":"Nature","active":true,"publicationSubtype":{"id":10}},"title":"Exotic terranes of western California","docAbstract":"Numerous distinct geological terranes compose the North American Cordillera1; there may be as many as 50 terranes in California alone2. Critical to deciphering the history of Cordilleran tectonic assembly is an understanding of the displacement history of individual terranes. It is therefore important to know: (1) whether a terrane has undergone significant motion with respect to the stable craton (that is, whether it is allochthonous or exotic); (2) if so, when relative motion started and stopped; (3) from where an individual terrane originated; and (4) the nature of interterrane movements. We consider here the problem of determining whether the now-juxtaposed Salinian and Stanley Mountain terranes of California became amalgamated at or near their present position with respect to cratonic North America, or if they collided at a considerable distance from their present positions and were later accreted to North America as a composite package. The palaeomagnetic data that we present indicate that the latter was the case. ?? 1982 Nature Publishing Group.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Nature","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1038/297215a0","issn":"00280836","usgsCitation":"McWilliams, M., and Howell, D.G., 1982, Exotic terranes of western California: Nature, v. 297, no. 5863, p. 215-217, https://doi.org/10.1038/297215a0.","startPage":"215","endPage":"217","numberOfPages":"3","costCenters":[],"links":[{"id":205110,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1038/297215a0"},{"id":221298,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"297","issue":"5863","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0db3e4b0c8380cd53155","contributors":{"authors":[{"text":"McWilliams, M.O.","contributorId":7840,"corporation":false,"usgs":true,"family":"McWilliams","given":"M.O.","email":"","affiliations":[],"preferred":false,"id":361425,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Howell, D. G.","contributorId":52546,"corporation":false,"usgs":true,"family":"Howell","given":"D.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":361426,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011572,"text":"70011572 - 1982 - Gravity measurements useful in the preliminary evaluation of the Nimiuktuk barite deposit, Alaska","interactions":[],"lastModifiedDate":"2024-01-12T16:54:34.477548","indexId":"70011572","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Gravity measurements useful in the preliminary evaluation of the Nimiuktuk barite deposit, Alaska","docAbstract":"No abstract available.
","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/gsecongeo.77.1.185","issn":"03610128","usgsCitation":"Barnes, D., Mayfield, C., Morin, R.L., and Brynn, S., 1982, Gravity measurements useful in the preliminary evaluation of the Nimiuktuk barite deposit, Alaska: Economic Geology, v. 77, no. 1, p. 185-189, https://doi.org/10.2113/gsecongeo.77.1.185.","productDescription":"5 p.","startPage":"185","endPage":"189","numberOfPages":"5","costCenters":[],"links":[{"id":221299,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"77","issue":"1","noUsgsAuthors":false,"publicationDate":"1982-02-01","publicationStatus":"PW","scienceBaseUri":"505a2a24e4b0c8380cd5af12","contributors":{"authors":[{"text":"Barnes, D.F.","contributorId":48960,"corporation":false,"usgs":true,"family":"Barnes","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":361428,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mayfield, C.F.","contributorId":95467,"corporation":false,"usgs":true,"family":"Mayfield","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":361429,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morin, R. L.","contributorId":95484,"corporation":false,"usgs":true,"family":"Morin","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":361430,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brynn, S.","contributorId":32781,"corporation":false,"usgs":true,"family":"Brynn","given":"S.","email":"","affiliations":[],"preferred":false,"id":361427,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70011704,"text":"70011704 - 1982 - Velocity and bottom-stress measurements in the bottom boundary layer, outer Norton Sound, Alaska.","interactions":[],"lastModifiedDate":"2012-03-12T17:18:33","indexId":"70011704","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1794,"text":"Geologie en Mijnbouw","active":true,"publicationSubtype":{"id":10}},"title":"Velocity and bottom-stress measurements in the bottom boundary layer, outer Norton Sound, Alaska.","docAbstract":"We have used long-term measurements of near-bottom velocities at four heights above the sea floor in Norton Sound, Alaska, to compute hourly values of shear velocity u., roughness and bottom-drag coefficient. Maximum sediment resuspension and transport, predicted for periods when the computed value of u. exceeds a critical level, occur during peak tidal currents associated with spring tides. The fortnightly variation in u. is correlated with a distinct nepheloid layer that intensifies and thickens during spring tides and diminishes and thins during neap tides. The passage of a storm near the end of the experiment caused significantly higher u. values than those found during fair weather.-from Authros","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geologie en Mijnbouw","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","usgsCitation":"Cacchione, D., Drake, D., and Wiberg, P., 1982, Velocity and bottom-stress measurements in the bottom boundary layer, outer Norton Sound, Alaska.: Geologie en Mijnbouw, v. 61, no. 1, p. 71-78.","startPage":"71","endPage":"78","numberOfPages":"8","costCenters":[],"links":[{"id":221308,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"61","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc1f4e4b08c986b32a846","contributors":{"authors":[{"text":"Cacchione, D.A.","contributorId":65448,"corporation":false,"usgs":true,"family":"Cacchione","given":"D.A.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":361766,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Drake, D.E.","contributorId":48150,"corporation":false,"usgs":true,"family":"Drake","given":"D.E.","email":"","affiliations":[],"preferred":false,"id":361765,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wiberg, P.","contributorId":22090,"corporation":false,"usgs":true,"family":"Wiberg","given":"P.","email":"","affiliations":[],"preferred":false,"id":361764,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011912,"text":"70011912 - 1982 - Uranium and thorium enrichment in rocks from the base of DSDP Hole 465A, Hess Rise, central North Pacific","interactions":[],"lastModifiedDate":"2013-01-21T09:35:33","indexId":"70011912","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"Uranium and thorium enrichment in rocks from the base of DSDP Hole 465A, Hess Rise, central North Pacific","docAbstract":"Uranium and thorium are concentrated in Cretaceous limestone, chert, ash, basalt, and other rock types at Deep Sea Drilling Project Site 465 located on the southern Hess Rise in the central North Pacific. U concentrations, up to 194 ppm on a carbonate-free basis, are among the highest recorded for any deep-sea deposits. U was initially derived from seawater and concentrated by absorption on terrigenous (humic) organic matter in limestone in a shallow marine environment. U and Th were probably concentrated further by low-temperature hydrothermal fluids emanating from the basaltic basement. Mainly montmorillonite, an alteration product of basalt and ash, and organic matter in sedimentary rocks acted as hosts for U and Th. The unique combination of sediments rich in humic organic matter, abundant smectite in altered ash and basalt, and warm hydrothermal solutions provided the necessary conditions for migration and concentration of U and Th. To better understand the conditions limiting the migrating and concentration of U and Th, other rocks deposited during the ocean-wide Cretaceous anoxic events should be analyzed for these elements. ?? 1982.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/0009-2541(82)90050-X","issn":"00092541","usgsCitation":"Hein, J., Koski, R., and Morgenson, L., 1982, Uranium and thorium enrichment in rocks from the base of DSDP Hole 465A, Hess Rise, central North Pacific: Chemical Geology, v. 36, no. 3-4, p. 237-251, https://doi.org/10.1016/0009-2541(82)90050-X.","startPage":"237","endPage":"251","numberOfPages":"15","costCenters":[],"links":[{"id":221623,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":266119,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/0009-2541(82)90050-X"}],"volume":"36","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbd91e4b08c986b3290d0","contributors":{"authors":[{"text":"Hein, J.R. 0000-0002-5321-899X","orcid":"https://orcid.org/0000-0002-5321-899X","contributorId":61429,"corporation":false,"usgs":true,"family":"Hein","given":"J.R.","affiliations":[],"preferred":false,"id":362270,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koski, R.A.","contributorId":16006,"corporation":false,"usgs":true,"family":"Koski","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":362269,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Morgenson, L.A.","contributorId":104065,"corporation":false,"usgs":true,"family":"Morgenson","given":"L.A.","email":"","affiliations":[],"preferred":false,"id":362271,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011696,"text":"70011696 - 1982 - The chemical and isotopic record of rock-water interaction in the Sherman Granite, Wyoming and Colorado","interactions":[],"lastModifiedDate":"2012-03-12T17:18:27","indexId":"70011696","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1336,"text":"Contributions to Mineralogy and Petrology","active":true,"publicationSubtype":{"id":10}},"title":"The chemical and isotopic record of rock-water interaction in the Sherman Granite, Wyoming and Colorado","docAbstract":"Chemical, isotopic, radiographic, and rock-leaching data are combined to describe the effects of rock-water interactions in core samples of petrographically fresh, 1.43 b.y.-old Sherman Granite. The data serve to identify sensitive indicators of incipient alteration and to estimate the degree, pathways, and timing of element mobilization. Unfractured core samples of Sherman Granite are remarkably fresh by most chemical or isotopic criteria, but incipient alteration is indicated by the abundance and distribution of uranium and the degree of radioactive equilibration of uranium with its decay products. Uranium abundances which are out of equilibrium with lead decay products indicate remobilization of a portion (3 to 60 percent) of original uranium in late Phanerozoic time. Association of uranium with minor but pervasive secondary alteration products also indicates some remobilization. The amount of apparent uranium mobility in unfractured Sherman Granite (3 to 60 percent) is small compared to the results of similar studies of Archean granites from nearby localities. Chemical and isotopic data evaluated as a function of core-sample depth suggest a uranium migrational pathway involving near-surface leaching and reconcentration at depth. Movement of solutions through the upper 200 ft (60 m) of Sherman Granite is fracture controlled, and brecciated granite shows more obvious petrographic, chemical, and isotopic evidence of alteration and multi-element redistribution. Laboratory experiments using freshly crushed Sherman Granite confirm that uranium is leached in preference to elements such as Si, Mg, Ca, and K, and that leachable uranium is situated close to the solid-liquid interface; perhaps as uranium along grain boundaries, in crystal defects, or on cleavage traces of minerals that exclude uranium from their structure. ?? 1981 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Contributions to Mineralogy and Petrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF00398915","issn":"00107999","usgsCitation":"Zielinski, R.A., Peterman, Z.E., Stuckless, J., Rosholt, J., and Nkomo, I.T., 1982, The chemical and isotopic record of rock-water interaction in the Sherman Granite, Wyoming and Colorado: Contributions to Mineralogy and Petrology, v. 78, no. 3, p. 209-219, https://doi.org/10.1007/BF00398915.","startPage":"209","endPage":"219","numberOfPages":"11","costCenters":[],"links":[{"id":221129,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205089,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00398915"}],"volume":"78","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa28e4b08c986b322730","contributors":{"authors":[{"text":"Zielinski, R. A. 0000-0002-4047-5129","orcid":"https://orcid.org/0000-0002-4047-5129","contributorId":106930,"corporation":false,"usgs":true,"family":"Zielinski","given":"R.","email":"","middleInitial":"A.","affiliations":[{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":361735,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Peterman, Z. E.","contributorId":63781,"corporation":false,"usgs":true,"family":"Peterman","given":"Z.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":361734,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stuckless, J. S.","contributorId":6060,"corporation":false,"usgs":true,"family":"Stuckless","given":"J. S.","affiliations":[],"preferred":false,"id":361731,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Rosholt, J.N.","contributorId":37749,"corporation":false,"usgs":true,"family":"Rosholt","given":"J.N.","email":"","affiliations":[],"preferred":false,"id":361732,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Nkomo, Ignatius T.","contributorId":61044,"corporation":false,"usgs":true,"family":"Nkomo","given":"Ignatius","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":361733,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70011633,"text":"70011633 - 1982 - Modern shallow-water graded sand layers from storm surges, Bering Shelf: a mimic of Bouma sequences and turbidite systems","interactions":[],"lastModifiedDate":"2024-05-21T23:50:16.941879","indexId":"70011633","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"Modern shallow-water graded sand layers from storm surges, Bering Shelf: a mimic of Bouma sequences and turbidite systems","docAbstract":"A sequence of graded sand layers, interbedded with mud, extends offshore over 100 km from the Yukon Delta shoreline across the flat, shallow (<20 m depth) epicontinental shelf of the northern Bering Sea, Alaska. Proximal graded sand beds on the delta-front platform near the shoreline are coarser (2-3phi ), thicker (10 to 20 cm), and contain more complete vertical sequences of sedimentary structures than distal beds. The inshore graded vertical sequence of structures from the base to the top of individual sand layers includes plane-parallel lamination (S b ), cross lamination (S c ), plane-parallel lamination (S d ), and mud (S e ) analogous to the Bouma T (sub a-e) turbidite sequence. Structures vary between interchannel platform deposits with complete S b -S e sequences and channel-floor sands that are all trough cross-laminated. Distally, storm-sand layers change to thin (1 to 5 cm) silt beds that contain flat and ripple-drift lamination (S (sub c-e,de) ), are commonly bioturbated, and are associated with shell and pebble lags from storm-wave reworking. The sequence of graded sands appears to be related to the major storm surges that occur every several years. The major storms increase the average 10-m water depth in southern Norton Sound as much as 5 m and cause fluctuations in pore pressure from wave cyclic loading that may liquefy the upper 2 to 3 m of sediment. Storm-associated bottom currents, possibly dominated by rapidly waning ebb flow, transport the liquefied inshore sand far offshore (> 100 kin). Such shallow-water graded layers off lobate deltas may be distinguished from similar deep-water turbidites by: 1) the predominance of trough cross-lamination, perhaps resulting from wave oscillation effects, in the proximal part of the system, and 2) gradation to common shallow marine fossils, bioturbation, and storm lag layers in distal areas.
Five manganese nodules, including the USGS reference nodules A-1 and P-1, were analyzed for Co, Cu, Fe, K, Mg, Mn, Na, Ni and Zn without prior chemical separation by using a simultaneous multi-element atomic absorption spectrometer with an air—cetylene flame. The nodules were prepared in three digestion matrices. One of these solutions was measured using sixteen different combinations of burner height and air/acetylene ratios. Results for A-1 and P-1 are compared to recommended values and results for all nodules are compared to those obtained with an inductively coupled plasma. The elements Co, Cu, Fe, K, Mg, Mn, Na, Ni, and Zn are simultaneously determined with a composite recovery for all elements of 100 ± 7%, independent of the digestion matrices, heights in the flame, or flame stoichiometries examined. Individual recoveries for Co, K, and Ni are considerably poorer in two digests than this composite figure, however. The optimum individual recoveries of 100 ± 5% and imprecisions of 1–4%, except for zinc, are obtained when Co, K, Mn, Na and Ni are determined simultaneously in a concentrated digest, and in another analytical sequence, when Cu, Fe, Mg, Mn and Zn are measured simultaneously after dilution. Determination of manganese is equally accurate in the two sequences; its measurement in both assures internal consistency between the two measurement sequences. This approach improves analytical efficiency over that for conventional atomic absorption methods, while minimizing loss of accuracy or precision for individual elements.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0003-2670(01)94007-3","usgsCitation":"Kane, J.S., and Harnly, J.M., 1982, Multi-element analysis of manganese nodules by atomic absorption spectrometry without chemical separation: Analytica Chimica Acta, v. 139, no. C, p. 297-305, https://doi.org/10.1016/S0003-2670(01)94007-3.","productDescription":"9 p.","startPage":"297","endPage":"305","numberOfPages":"9","costCenters":[],"links":[{"id":221245,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"139","issue":"C","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5fb1e4b0c8380cd710a7","contributors":{"authors":[{"text":"Kane, Jean S.","contributorId":22359,"corporation":false,"usgs":true,"family":"Kane","given":"Jean","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":361587,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Harnly, J. M.","contributorId":22492,"corporation":false,"usgs":false,"family":"Harnly","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":361586,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011586,"text":"70011586 - 1982 - Morphology, distribution, and development of submarine canyons on the United States Atlantic continental slope between Hudson and Baltimore Canyons","interactions":[],"lastModifiedDate":"2017-09-13T14:34:57","indexId":"70011586","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Morphology, distribution, and development of submarine canyons on the United States Atlantic continental slope between Hudson and Baltimore Canyons","docAbstract":"The distribution and morphology of submarine canyons off the eastern United States between Hudson and Baltimore Canyons have been mapped by long-range sidescan sonar. In this area canyons are numerous, and their spacing correlates with overall slope gradient; they are absent where the gradient is less than 3°, are 2 to 10 km apart where the gradient is 3° to 5°, and are 1.5 to 4 km apart where the gradient exceeds 6°. Canyons range from straight to sinuous; those having sinuous axes indent the edge of the continental shelf and appear to be older than those that head on the upper slope and have straighter axes. A difference in canyon age would suggest that canyons are initiated on the continental slope and only with greater age erode headward to indent the shelf. Shallow gullies on the middle and upper slope parts of the canyon walls suggest that submarine erosion has been a major process in a recent phase of canyon development.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0091-7613(1982)10<408:MDADOS>2.0.CO;2","issn":"00917613","usgsCitation":"Twichell, D.C., and Roberts, D.G., 1982, Morphology, distribution, and development of submarine canyons on the United States Atlantic continental slope between Hudson and Baltimore Canyons: Geology, v. 10, no. 8, p. 408-412, https://doi.org/10.1130/0091-7613(1982)10<408:MDADOS>2.0.CO;2.","productDescription":"5 p.","startPage":"408","endPage":"412","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":221597,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Baltimore Canyon, Hudson Canyon","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -74.1357421875,\n 37.55764242679524\n ],\n [\n -74.1357421875,\n 39.5633531658293\n ],\n [\n -70.7794189453125,\n 39.5633531658293\n ],\n [\n -70.7794189453125,\n 37.55764242679524\n ],\n [\n -74.1357421875,\n 37.55764242679524\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"10","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5e5de4b0c8380cd709b2","contributors":{"authors":[{"text":"Twichell, David C.","contributorId":37730,"corporation":false,"usgs":true,"family":"Twichell","given":"David","email":"","middleInitial":"C.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":false,"id":361470,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roberts, David G.","contributorId":39937,"corporation":false,"usgs":false,"family":"Roberts","given":"David","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":361469,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011587,"text":"70011587 - 1982 - Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah","interactions":[],"lastModifiedDate":"2023-01-10T17:56:03.888123","indexId":"70011587","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah","docAbstract":"The Douglas Creek Member of the Tertiary Green River Formation underlies much of the Uinta basin, Utah, and contains large volumes of oil and gas trapped in a complex of fractured low-permeability sandstone reservoirs. In the southeastern part of the basin at Pariette Bench, the Eocene Douglas Creek Member is a thick sequence of fine-grained alluvial sandstone complexly intercalated with lacustrine claystone and carbonate rock. Sediments were deposited in a subsiding intermontane basin along the shallow fluctuating margin of ancient Lake Uinta. Although the Uinta basin has undergone postdepositional uplift and erosion, the deepest cored rocks at Pariette Bench have never been buried more than 9,800 ft (3,000 m).
The sandstones, dominantly lithic arkoses and feldspathic litharenites, were derived from source terranes south of the Uinta basin. Secondary silica and several generations of authigenic calcite [Ca1.8-1.9(Mg0.02-0.06Fe0.02-0.06)(CO3)2], dolomite [Ca1.3-1.4(Mg0.6-0.7Fe0.02-0.04)(CO3)2], and ankerite [Ca1.2-1.3(Mg0.2-0.3Fe0.4-0.6)(CO3)2] form a replacive cement in the sandstones. Commonly, syntaxial overgrowths of late iron-bearing carbonate occur on detrital grains and preexisting relicts of iron-free carbonate cement. In sandstone where carbonate has been partly dissolved, abundant authigenic illite, partly ordered mixed- ayer illite-smectite, and small amounts of chlorite partly to completely fill secondary pores. Isotopic composition of carbonate cement and grain-supported rock range from -0.39 to -6.18 ^pmil for ^dgr13C and -7.80 to -13.98 ^pmil for ^dgr18O, indicating that authigenic carbonate formed at low temperatures in the presence of meteoric waters by a process of solution-precipitation. Enrichment of carbon and oxygen in early diagenetic calcite and fossiliferous rock relative to late diagenetic ankerite indicates a trend toward lighter isotopic carbonate compositions with increasing diagenesis.
Kerogenous rocks at Pariette Bench are thermochemically immature and therefore are not the source of oil produced in the field. Hydrocarbons are compositionally similar to some of the oils produced from the Green River Formation in the Bluebell-Altamont field and are interpreted to have migrated from mature Green River source rocks through a network of open fractures. The occurrence of small amounts of hydrocarbon in secondary pores indicates that its emplacement postdated carbonate dissolution.
","language":"English","publisher":"American Association of Petroleum Geologists","doi":"10.1306/03B5A98F-16D1-11D7-8645000102C1865D","usgsCitation":"Pitman, J.K., Fouch, T.D., and Goldhaber, M., 1982, Depositional setting and diagenetic evolution of some Tertiary unconventional reservoir rocks, Uinta Basin, Utah: American Association of Petroleum Geologists Bulletin, v. 66, no. 10, p. 1581-1596, https://doi.org/10.1306/03B5A98F-16D1-11D7-8645000102C1865D.","productDescription":"16 p.","startPage":"1581","endPage":"1596","numberOfPages":"16","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":221598,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Utah","otherGeospatial":"Uinta Basin","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -111.0225857789739,\n 40.63348012338835\n ],\n [\n -111.0225857789739,\n 39.27696875971418\n ],\n [\n -108.75245518662385,\n 39.27696875971418\n ],\n [\n -108.75245518662385,\n 40.63348012338835\n ],\n [\n -111.0225857789739,\n 40.63348012338835\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","volume":"66","issue":"10","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fec8e4b0c8380cd4ef16","contributors":{"authors":[{"text":"Pitman, Janet K. 0000-0002-0441-779X jpitman@usgs.gov","orcid":"https://orcid.org/0000-0002-0441-779X","contributorId":767,"corporation":false,"usgs":true,"family":"Pitman","given":"Janet","email":"jpitman@usgs.gov","middleInitial":"K.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":361472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fouch, T. D.","contributorId":68333,"corporation":false,"usgs":true,"family":"Fouch","given":"T.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":361471,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Goldhaber, M. B. 0000-0002-1785-4243","orcid":"https://orcid.org/0000-0002-1785-4243","contributorId":103280,"corporation":false,"usgs":true,"family":"Goldhaber","given":"M. B.","affiliations":[],"preferred":false,"id":361473,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70011589,"text":"70011589 - 1982 - Rapid intrusion of magma into wet rock: Groundwater flow due to pore pressure increases","interactions":[],"lastModifiedDate":"2024-07-16T15:04:29.069009","indexId":"70011589","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"Rapid intrusion of magma into wet rock: Groundwater flow due to pore pressure increases","docAbstract":"Analytical and numerical solutions are developed to simulate the pressurization, expansion, and flow of groundwater contained within saturated, intact host rocks subject to sudden heating from the planar surface of an igneous intrusion. For most rocks, water diffuses more rapidly than heat, assuring that groundwater is not heated along a constant-volume pressure path and that thermal expansion and pressurization adjacent to the intrusion drives a flow that extends well beyond the heated region. The forcing parameter for pressurization and flow is α ΔT, where α is a thermal expansion coefficient reflecting the overall expansion of water heated through the temperature difference ΔT between the initial ambient and intrusive values. Pore pressure increases due to heating are greatest when the intrusion is emplaced rapidly and where the intrusive contact is impervious to groundwater contained in stiff, impermeable rocks with high thermal diffusivities and porosities. The maximum velocity of water flowing in pores decays with the inverse square root of time and is insensitive to hydraulic properties of the host rocks. Pressures are lessened and flow directions are reversed with the onset of hydrothermal convection. This occurs at times ranging from hours to weeks after onset of intrusion. As magma rises into near-surface rocks, steam can be generated. Solutions indicate that pressure increases and velocities are sensitive to the overall amount of expansion rather than the behavior of the water-steam transition. Both the overall thermal expansion coefficient α and the temperature difference ΔT are greater in shallow (<1 km) environments than in deep (∼5 km) ones. Thus, for rocks with similar transport properties, pressure increases due to heating are greatest in shallow environments. Although solutions can be applied to rocks with a wide variety of properties, pressure increases are calculated for compliant quartz-rich sedimentary rocks with a porosities between 1 and 20% and permeabilities between 1 darcy and 1 μdarcy, subject to temperature increases of 500 and 1000 K at depths ranging from 0.1 to 5 km in a region of hydrostatic pressures and normal geothermal gradient. Such rocks, with porosities greater than 5%, permeabilities less than a 0.1 mdarcy, and drained hydrostatic compressibilities of 10−4/MPa, undergo pressure increases greater than 10 MPa (100 bars)for conditions typical of water table depths of 2.5 km and heating to 500 K above ambient. Similar rocks, but with permeabilities less than 1 mdarcy, undergo pressure increases of 10 MPa for conditions typical of 1 km water table depth. Rocks commonly considered to be good aquifers undergo pressure increases of less than 1 MPa, primarily because of their high permeability. Although these estimates neglect the effects of fracturing and brecciation that may accompany such pressure increases, calculations indicate that pressure increases due to heating of cool groundwater can lead to failure of host rocks by a phreatic mechanism.
","language":"English","publisher":"American Geophysical Union","doi":"10.1029/JB087iB09p07739","issn":"01480227","usgsCitation":"Delaney, P., 1982, Rapid intrusion of magma into wet rock: Groundwater flow due to pore pressure increases: Journal of Geophysical Research Solid Earth, v. 87, no. B9, p. 7739-7756, https://doi.org/10.1029/JB087iB09p07739.","productDescription":"18 p.","startPage":"7739","endPage":"7756","numberOfPages":"18","costCenters":[],"links":[{"id":221600,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"B9","noUsgsAuthors":false,"publicationDate":"2012-09-20","publicationStatus":"PW","scienceBaseUri":"505a94ebe4b0c8380cd816d2","contributors":{"authors":[{"text":"Delaney, P.T.","contributorId":69980,"corporation":false,"usgs":true,"family":"Delaney","given":"P.T.","email":"","affiliations":[],"preferred":false,"id":361478,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011695,"text":"70011695 - 1982 - Environmental implications of test-to-substrate attachment among some modern sublittoral foraminifera","interactions":[],"lastModifiedDate":"2014-11-14T16:13:33","indexId":"70011695","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","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":"Environmental implications of test-to-substrate attachment among some modern sublittoral foraminifera","docAbstract":"Topographic highs on the outer continental shelf of New Jersey are sites for the concentration of three species of attached calcareous benthic foraminifera. Elphidium subarcticum Cushman, normally considered a vagrant species, cements itself by an organic film to one or more quartz grains. Webbinella concave (Williamson) attaches to quartz grains by secreting a flange-like calcite skirt at one side of its globuline test. Vasiglobulina reticulate n. sp. has evolved the most elaborate system of attachment: numerous closely spaced spines connect the globuline test to a thin calcite lamina, which is in turn cemented to quartz grains.
\n\n
The attachment mode of these species suggests that the added weight of the quartz grains may reduce displacement during the periodic resuspension of the shelf sediments by longshore and tidal current motion. The distribution of living populations of these species corroborates sedimentological inferences that little or no modern deposition takes place on the sampled topographic highs.
","language":"English","publisher":"Geological Society of America","doi":"10.1130/0016-7606(1982)93<252:EIOTAA>2.0.CO;2","usgsCitation":"Poag, C.W., 1982, Environmental implications of test-to-substrate attachment among some modern sublittoral foraminifera: Geological Society of America Bulletin, v. 93, no. 3, p. 252-268, https://doi.org/10.1130/0016-7606(1982)93<252:EIOTAA>2.0.CO;2.","productDescription":"17 p.","startPage":"252","endPage":"268","numberOfPages":"17","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":221128,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New Jersey","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -73.10302734375,\n 38.950865400919994\n ],\n [\n -73.10302734375,\n 39.99395569397331\n ],\n [\n -71.685791015625,\n 39.99395569397331\n ],\n [\n -71.685791015625,\n 38.950865400919994\n ],\n [\n -73.10302734375,\n 38.950865400919994\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"93","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a09d0e4b0c8380cd52095","contributors":{"authors":[{"text":"Poag, C. Wylie","contributorId":52714,"corporation":false,"usgs":true,"family":"Poag","given":"C.","email":"","middleInitial":"Wylie","affiliations":[],"preferred":false,"id":361730,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70010435,"text":"70010435 - 1982 - Automated standardization technique for an inductively-coupled plasma emission spectrometer","interactions":[],"lastModifiedDate":"2023-03-07T16:33:07.780652","indexId":"70010435","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":760,"text":"Analytica Chimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Automated standardization technique for an inductively-coupled plasma emission spectrometer","docAbstract":"The manifold assembly subsystem described permits real-time computer-controlled standardization and quality control of a commercial inductively-coupled plasma atomic emission spectrometer. The manifold assembly consists of a branch-structured glass manifold, a series of microcomputer-controlled solenoid valves, and a reservoir for each standard. Automated standardization involves selective actuation of each solenoid valve that permits a specific mixed standard solution to be pumped to the nebulizer of the spectrometer. Quality control is based on the evaluation of results obtained for a mixed standard containing 17 analytes, that is measured periodically with unknown samples. An inaccurate standard evaluation triggers restandardization of the instrument according to a predetermined protocol. Interaction of the computer-controlled manifold assembly hardware with the spectrometer system is outlined. Evaluation of the automated standardization system with respect to reliability, simplicity, flexibility, and efficiency is compared to the manual procedure.
","language":"English","publisher":"Elsevier","doi":"10.1016/S0003-2670(01)84186-6","usgsCitation":"Garbarino, J.R., and Taylor, H.E., 1982, Automated standardization technique for an inductively-coupled plasma emission spectrometer: Analytica Chimica Acta, v. 134, no. C, p. 153-165, https://doi.org/10.1016/S0003-2670(01)84186-6.","productDescription":"13 p.","startPage":"153","endPage":"165","numberOfPages":"13","costCenters":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true}],"links":[{"id":219690,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"134","issue":"C","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059eef6e4b0c8380cd4a087","contributors":{"authors":[{"text":"Garbarino, John R. jrgarb@usgs.gov","contributorId":2189,"corporation":false,"usgs":true,"family":"Garbarino","given":"John","email":"jrgarb@usgs.gov","middleInitial":"R.","affiliations":[{"id":5046,"text":"Branch of Analytical Serv (NWQL)","active":true,"usgs":true}],"preferred":true,"id":358923,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Taylor, Howard E. hetaylor@usgs.gov","contributorId":1551,"corporation":false,"usgs":true,"family":"Taylor","given":"Howard","email":"hetaylor@usgs.gov","middleInitial":"E.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":358922,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70011637,"text":"70011637 - 1982 - Glass frit nebulizer for atomic spectrometry","interactions":[],"lastModifiedDate":"2013-03-12T20:52:55","indexId":"70011637","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Glass frit nebulizer for atomic spectrometry","docAbstract":"The nebuilizatlon of sample solutions Is a critical step In most flame or plasma atomic spectrometrlc methods. A novel nebulzatlon technique, based on a porous glass frit, has been Investigated. Basic operating parameters and characteristics have been studied to determine how thte new nebulizer may be applied to atomic spectrometrlc methods. The results of preliminary comparisons with pneumatic nebulizers Indicate several notable differences. The frit nebulizer produces a smaller droplet size distribution and has a higher sample transport efficiency. The mean droplet size te approximately 0.1 ??m, and up to 94% of the sample te converted to usable aerosol. The most significant limitations In the performance of the frit nebulizer are the stow sample equMbratton time and the requirement for wash cycles between samples. Loss of solute by surface adsorption and contamination of samples by leaching from the glass were both found to be limitations only In unusual cases. This nebulizer shows great promise where sample volume te limited or where measurements require long nebullzatlon times.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Chemical Society","doi":"10.1021/ac00241a009","issn":"00032700","usgsCitation":"Layman, L.R., 1982, Glass frit nebulizer for atomic spectrometry: Analytical Chemistry, v. 54, no. 4, p. 638-642, https://doi.org/10.1021/ac00241a009.","startPage":"638","endPage":"642","numberOfPages":"5","costCenters":[],"links":[{"id":221246,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":269220,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/ac00241a009"}],"volume":"54","issue":"4","noUsgsAuthors":false,"publicationDate":"2002-05-01","publicationStatus":"PW","scienceBaseUri":"505a2929e4b0c8380cd5a6fa","contributors":{"authors":[{"text":"Layman, L. R.","contributorId":40640,"corporation":false,"usgs":true,"family":"Layman","given":"L.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361588,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70011638,"text":"70011638 - 1982 - Genetic relations among basic lavas and ultramafic nodules: Evidence from oxygen isotope compositions","interactions":[],"lastModifiedDate":"2012-03-12T17:18:33","indexId":"70011638","displayToPublicDate":"1982-01-01T00:00:00","publicationYear":"1982","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1336,"text":"Contributions to Mineralogy and Petrology","active":true,"publicationSubtype":{"id":10}},"title":"Genetic relations among basic lavas and ultramafic nodules: Evidence from oxygen isotope compositions","docAbstract":"??18O values of unaltered basic lavas range from 4.9 to 8.3 but different types of basalts are usually restricted to narrow and distinct ranges of isotopic composition. The average ??18O values for Hawaiian tholeiites, mid-ocean ridge tholeiites, and alkali basalts are 5.4, 5.7, and 6.2 permil, respectively. Potassic lavas and andesites tend to be more 18O rich with ??18O values between 6.0 and 8.0 permil. The differences among the oxygen isotopic compositions of most of these lavas can be attributed to partial melting of isotopically distinct sources. The oxygen isotope compositions of the sources may be a function of prior melting events which produce 18O-depleted partial melts and 18O-enriched residues as a consequence of relatively large isotopic fractionations that exist at high temperatures. It is proposed that lavas with relatively low ??18O values are derived from primitive, 18O-depleted sources whereas 18O-rich basalts are produced from refractory sources that have already produced partial melts. High temperature fractionations among silicate liquids and coexisting minerals can be used in conjunction with the oxygen isotope compositions of ultramafic nodules to place constraints on the genetic relations between some nodules and different types of basic lavas. ?? 1982 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Contributions to Mineralogy and Petrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisherLocation":"Springer-Verlag","doi":"10.1007/BF00372046","issn":"00107999","usgsCitation":"Kyser, T., O’Neil, J.R., and Carmichael, I.S., 1982, Genetic relations among basic lavas and ultramafic nodules: Evidence from oxygen isotope compositions: Contributions to Mineralogy and Petrology, v. 81, no. 2, p. 88-102, https://doi.org/10.1007/BF00372046.","startPage":"88","endPage":"102","numberOfPages":"15","costCenters":[],"links":[{"id":221247,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":205102,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/BF00372046"}],"volume":"81","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1580e4b0c8380cd54e47","contributors":{"authors":[{"text":"Kyser, T.K.","contributorId":25585,"corporation":false,"usgs":true,"family":"Kyser","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":361589,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"O’Neil, J. R.","contributorId":69633,"corporation":false,"usgs":true,"family":"O’Neil","given":"J.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":361591,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carmichael, I. S. E.","contributorId":61558,"corporation":false,"usgs":true,"family":"Carmichael","given":"I.","email":"","middleInitial":"S. E.","affiliations":[],"preferred":false,"id":361590,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ]}