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Now showing items 10488-10507 of 39124
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(Федеральное государственное бюджетное учреждение науки Геофизический центр Российской академии наук, 2017)This work considers features of genesis, a deep structure and a prospective value of the Muruntau ore field and its flanks, a spatial relation of various classes of gold ores in the operational condition, changes of an ...
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(2002)The metallogenic zonality of the transformed Vendian-Riphean paleoshelf along the passive margin in the south of the Siberian platform is represented by the following ore-geochemical sequence: Cu, Fe, Pb, Zn, Au (Sb, W), ...
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(1988)This chapter describes diagenesis in the context of ore genesis. After discussing general aspects in some detail, the numerous variabIes involved in diagenesis of metalliferous deposits are each briefly examined. The chapter ...
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(PANGAEA, 1992-05-02)Data on distribution of organic carbon and phenols near the top of Kandalaksha Gulf, one of the largest gulfs of the White Sea, are presented. Investigations carried out the port city of Kandalasksha indicate that bottom ...
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(PANGAEA, 1990-02-24)Analysis of contribution of micronodules of sand and silt size to chemical composition of various types of pelagic sediments, as well as use of published data indicate that in some types of bottom sediments micronodules ...
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(PANGAEA, 2013-10-21)
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(PANGAEA, 2003-12-21)Among the Siberian shelf seas the Kara Sea is most strongly influenced by riverine runoff with nearly 1500 km fresh water discharge per year. This fresh water, discharged mainly by Ob and Yenisei, contains about 3.1 * 106 ...
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(PANGAEA, 2005-02-07)
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(1990)Organic matter (OM) that is deposited on the bottom as a component of suspended matter derived chiefly from upper ocean layers greatly affects the processes of sedimentation and lithogenesis there. The most reliable ...
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(2000)Organic matter origins are inferred from carbon isotope ratios (delta13C) in recent continental shelf sediments and major rivers from 465 locations from the north Bering-Chukchi-East Siberian-Beaufort Sea, Arctic Amerasia. ...
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(2000)Geochemistry of dispersed organic matter (DOM) from oil source rocks of the Abalak Formation and Lower-Vasyugan Subformation of the West-Siberian Plate is considered on a new information level. Regularities of distribution ...
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(PANGAEA, 2019-02-22)Dissolved nutrients (NO3, NO3, NH4, PO4, Si, H2S) and dissolved and particulate oganic matter (DOC, TDN, CHLa, SPM, POC, PN, d13C) were measured on bottle samples obtained during CTD casts along transects in the NE, central ...
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(PANGAEA, 2019-02-25)These data are laboratory results for carbon characteristics (TOC, TC, TN, C/N ratio, stable carbon isotope ratio, radiocarbon ages from bulk organic material), sediment characteristics (mass specific magnetic susceptibility ...
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(2002)Organic petrologic (maceral analysis) and bulk organic–geochemical studies were performed on five sediment cores from the Eurasian continental margin to reconstruct the environmental changes during the last ∼13 000 yr. The ...
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(PANGAEA, 2002-09-30)Organic petrologic (maceral analysis) and bulk organic-geochemical studies were performed on five sediment cores from the Eurasian continental margin to reconstruct the environmental changes during the last not, vert, ...
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(2004)Muddy carbonate deposits near the Dry Tortugas, Florida, are characterized by high organic carbon remineralization rates. However, approximately half of the total sedimentary organic matter potentially supporting ...
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(PANGAEA, 1982-01-12)Concentration of dissolved and suspended organic carbon in the Barents Sea decreases with increasing depth and in meridional direction from south to north. This fact is attributed to uneven supply of organic matter (OM) ...
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(1990)Massive polymetallic sulfides are currently being deposited around active submarine hydrothermal vents associated with spreading centers. Chemoautolithotrophic bacteria are responsible for the high production of organic ...
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(1987)The authors analyzed data obtained during a study of iron-manganese nodules and surrounding sediments of the Pacific and Indian oceans. The data indicate that in the top 30 to 50 cm of bottom sediments there occurs active ...
Now showing items 10488-10507 of 39124