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Now showing items 1-20 of 94
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(2003)A Cenozoic multi-species record of benthic foraminiferal calcite Sr/Ca has been produced and is corrected for inter-specific offsets (typically less than 0.3 mmol/mol) and for the linear relationship between decreasing ...
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(2002)The leaves and capitate inflorescences showing macromorphological and micromorphological features of the family Platanaceae are assigned to the same plant on the basis of their joint occurrences in three Early Paleogene ...
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(2003)By means of taxonomically and geochronologically revised species lists (a total of 793 valid species of bivalve molluscs were considered) from 178 formations (‘Suites’) of Neogene and Paleogene deposits in the Russian Far ...
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(2006)The Qaleh-Zari copper deposit, located in South Khorasan in the Central Lut region of Iran, is a polymetallic vein deposit with major amounts of Cu, Au, Ag and minor amounts of Pb, Zn and Bi. Mineralization occurs in a ...
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(1997)About 10,000 years ago, at the Pleistocene-Holocene border, some important events occurred: the glaciation stopped abruptly; the sea level elevated, and quick (for 20-50 years) climatic and ecological changes took place, ...
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(2006)The paleontological and field evidences presented in the paper demonstrate a biochronological continuity from the marine Subathu (Late Thanetian to Middle Lutetian) through the Passage Beds (Late Lutetian to Middle Bartonian) ...
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(2001)The regional stratigraphic scheme suggested for the marine Paleogene deposits in the West Siberian plate is based on investigation results of macro- and microfossils (foraminifers, dinoflagellales, radiolarians, diatomaceous ...
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(2001)Southeastern Russia is characterized by considerable potential coal and brown coal resources. Paleogene to Neogene brown coals and Lower Cretaceous bituminous coals appear to be well developed (Khabarovsk, Bazovsky and ...
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(2001)Carbon isotopic composition was studied in oils and hydrocarbon gases from different oil and gas fields and reservoirs hosted in the Upper Cretaceous to Upper Pliocene sequences of the South Caspian mega-depression. It was ...
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(2006)The previously published and newly obtained geological and geochronological (Rb-Sr and Ar-Ar) data show that the igneous rocks and products of hydrothermal alteration in the Dukat ore field pertain to two ore-forming ...
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(2001)The deep structure of the Eurasia-Pacific transition zone was investigated under the Geotraverse International Project along the deep sections of the tectonosphere, including the lithosphere and the asthenosphere, based ...
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(2003)The lower Paleogene sequence in the Middle Povolzhie (Ulyanovsk-Saratov syncline) of Russia is dominated by a terrigenous-rich siliceous facies with abundant and well-preserved siliceous plankton. Calcareous microfossils ...
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(1998)The new Paleocene stratigraphic scheme of western Kamchatka comprising two, Ulevenei and Chemurnaut groups divided into seven formation and members is discussed. Four horizons marked by marine fossils and four phytohorizons ...
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(2003)Attempts to understand early Paleogene climate using models have provided insights, but have consistently had difficulty explaining essential climatic features. A main limitation of those studies has been the lack of ...
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(2003)Our study in lithologically diverse lower Paleogene deposits of the former southern USSR and West Siberia resolves three sedimentary provinces: (i) Southern (Crimea-Caucasus and Central Asia), dominated by biogenic calcareous ...
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(1999)Oxygen isotope records of planktonic foraminifera indicate that Late Eocene and Oligocene tropical sea surface temperatures were as much as 8°C lower than present at a time when high latitude sea surface temperatures were ...
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(1989)Systematic drilling recently done during prospecting surveys in various parts of the Chu-Sarysu and the Ili depressions disclosed iron-manganese mineralization in Upper Cretaceous and Paleogene continental deposits. Their ...
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(2006)Xenoliths hosted by Quaternary basanites and alkali basalts from Marsabit (northern Kenya) represent fragments of Proterozoic lithospheric mantle thinned and chemically modified during rifting in the Mesozoic (Anza Graben) ...
Now showing items 1-20 of 94