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Now showing items 21-40 of 277
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(2003)The Middle Volgian Kashpir Oil Shales Formation, located on the Russian Platform, is a lateral equivalent of the North Sea and West Siberian petroleum source rocks. In the Volga Basin, this formation is 6 m thick and shows ...
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(1904)
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(1998)Data on Jurassic foraminifers from key localities in continents and oceans is analyzed. Their distribution range spans the stratigraphic interval from the Aalenian to the Tithonian equal to 32 million years. Among 23 ...
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(2000)Composition of the Jurassic (Hettangian-Tithonian) foraminiferal communities in three paleozoochores: Tethyan, Boreal-Atlantic, and Arctic, is considered. Foraminiferal taxons of all ranks (from species to orders) are ...
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(2001)Early Cretaceous vertebrates at Shestakovo were known since 1953, when 2 partial Psittacosaurus skeletons were found. Intensive excavations and screen-washing at Shestakovo 1 and 3 localities, carried out since 1995 by a ...
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(2004)The Mjølnir bolide created the 40-km diameter Mjølnir crater, when it impacted the black, mostly anoxic clays of the Hekkingen Formation in the paleo-Barents Sea about 142±2.6 million years ago. The normally calm, 300–500 ...
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(1998)A transgressive-regressive (T-R) curve for the Jurassic and Lower Neocomian of the West-Siberian sedimentary basin was constructed on a detailed chronostratigraphic basis. This curve is compared with the quantitative ...
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(1990)Determining the maximum temperature to which sedimentary rocks were exposed is of great importance, especially in petroleum geology, and also is one of the most difficult of tasks in that science. A simple method of ...
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(2004)In an early attempt to incorporate infraspecific, varietal categories into conventional, morphodescriptive Linnaean taxonomy, Quenstedt in 1845 introduced an idiosyncratic trinominal nomenclature that has bedevilled ammonite ...
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(2002)Thermochemolysis experiments with tetramethylammonium hydroxide (TMAH), on three Late Jurassic kerogens with contrasting features, confirmed the major role of encapsulation into aliphatic structures for the survival of ...
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(2001)We describe a nearly complete mammalian femur from the Middle Jurassic (upper Bathonian) from Peski quarry, situated some 100 km south east of Moscow, central Russia. It is similar to the femora of Morganucodontidae in ...
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(2002)The study of septal patterns in ammonoids has been centered on functional and/or constructional issues. Complexly fluted septa have been considered as complementary structures that reinforce the ammonite shell, their frilled ...
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(1989)The basanite explosion pipes in the area of the Kop'yevo uplift in the Chulym-Yenisey basin (CYB) are widely known because they contain xenoliths of peridotite, pyroxenite and megacrysts of other minerals and others). ...
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(1990)Investigations done in the northern Caspian Sea more than 20 years ago have defined the general structure of the Jurassic-Cretaceous and Cenozoic deposits, but information on older complexes was lacking until recently. In ...
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(2004)Pliensbachian coaliferous sequences were formed along the southern margin of the Stavropol Uplift in various paleogeographic environments. Therefore, peat bogs are developed in various landscape zones. In the southern Kuban ...
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GEOCHEMICAL FACIES ANALYSIS OF FINE-GRAINED SILICICLASTICS USING TH/U, ZR/RB AND (ZR+RB)/SR RATIOS (2001)Abundance of the trace elements Zr, Rb, Sr, Th and U may provide insight into the sedimentological origin of fine-grained siliciclastic sediments, provided that the units are derived from similar source areas, as demonstrated ...
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(2004)Early Mesozoic geological events played an important role in the structural evolution of Eastern and Central Asia. They involved collision between Siberia and Sino-Korean continents. This was accompanied by the closure of ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2019)This paper discusses the productive beds of the Urna and Ust-Tegus oil fields (West Siberia, Russian) and permeability and capacity properties that are influenced by geodynamic processes. Strong tectonic processes, accompanied ...
Now showing items 21-40 of 277