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Now showing items 61-80 of 489
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(2001)Forward and reverse numerical modeling was applied in studies of structure and stratigraphic features of the syn-rift (Late Devonian) and early post-rift (Carboniferous) evolution of the SE Dnieper-Donets depression (DDD). ...
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(2001)Rb-Sr and Sm-Nd isotopic systems were investigated in the peralkaline granitoids and comagmatic volcanic rocks, which compose the Northern Mongolia-Transbaikalia Belt (NMTB). The belt extends over more than 2000 km at a ...
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(2004)The curve depicting generic diversity of Permian fusulinids has two distinct peaks: the Asselian-Sakmarian and Midian. The in-between minimum corresponds to the end of the Bolorian Age. The most significant extinctions of ...
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(1989)Analysis of the evolution of Phanerozoic stratigraphic complexes of the western margin of the East European craton (EEC) and the Central European Platform (CEP) shows that their formation depended on the corresponding ...
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(1997)Geological heritage, as part of natural heritage, includes the in situ located geological reference objects (sites) visualising geological phenomena with high information potential. Forty objects of geological heritage of ...
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(2006)The aim of this study was to generalize the data available for the paleointensity, polarity, and frequency of reversals, and variations in the direction of the geomagnetic field in the vicinity of the Paleozoic and Mesozoic ...
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(2003)Previously, minimal work has been carried out on conulariids due to their rare occurrences and resultant biostratigraphical limitations. The palaeobiogeographical distribution of Permian conulariids suggests that they have ...
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(2004)Pedogenic goethites in each of two Early Permian paleosols appear to record mixing of two isotopically distinct CO2 components—atmospheric CO2 and CO2 from in situ oxidation of organic matter. The δ13C values measured for ...
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(2002)A new genus of the family Ideliidae, Tshekardelia media gen. et sp. nov., is described from the locality of Tshekarda, the Lower Permian of the Ural Mountains. The species Sylvidelia latipennis Martynov, 1940, is redescribed.
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(2003)Dicynodont therapsids have long played an important role in global Late Permian and Triassic biostratigraphy, including recent studies of the effects of the extinction at the Permian-Triassic boundary on terrestrial ...
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(2006)This paper presents new data for the structure and age of the Paleozoic rocks in the Ikat-Bagdarin zone of the West Transbaikalia region. Reported for the first time is the wide development of various Devonian and Carboniferous ...
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(1988)A series of novel methylated phytanylbenzenes (phytanylbenzene, 1-methyl-3-phytanylbenzene, 1,4-dimethyl-2-phytanylbenzene, 1,2-dimethyl-4-phytanylbenzene and 1,2,4-trimethyl-5-phytanylbenzene) have been identified in ...
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(1987)Titanomagnetite-ilmenite mineralization, i.e., the composition and the mode of occurrence of minerals and their relationships to each other and to gangue minerals, was studied by ore microscopy and by petrographic, X-ra ...
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(2002)Distinctive long-legged insects Letopaloptera carpenteriana O. Martynova, 1961, and L. albardiana O. Martynova, 1961, from the Kazanian of the Soyana locality in the Arkhangel'sk Region are redescribed. The data on their ...
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(2003)On basis of analysis of complex geological-geophysical information, the most characteristic aspects of tectonic-geodynamic transformations of Arctic region periphery at evolution stage of North Eurasia have been considered. ...
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(1997)The main results of the International Symposium "Evolution of Permian Marine Biota," are presented. The Artinskian to Ufimian part of the section at the Kozhim River (Polar Urals) is briefly described including its ...
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(2004)This communication presents estimates of the magmatogenic CO2 influx into the atmosphere at the Permian-Triassic boundary during STP Siberian trap province formation.
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KARPINSKIOSAURUS ULTIMUS (SEYMOURIAMORPHA, PARAREPTILIA) FROM THE UPPER PERMIAN OF EUROPEAN RUSSIA (2002)The genus Raphanodon Ivachnenko, 1987 (Leptorophidae, Seymouriamorpha) is not a valid taxon, since its type species Nycteroleter ultimus Tchudinov et Vjuschkov, 1956 is assigned to the genus Karpinskiosaurus. The cranial ...
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(2001)The temporal link between mass extinctions and large igneous provinces is well known. Here, we examine this link by focusing on the potential climatic effects of large igneous province eruptions during several extinction ...
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(2014)Ultra-high-temperature (UHT) granulite-facies rocks offer important constraints on crustal evolution processes and tectonic history of orogens. UHT granulites are generally rare in Phanerozoic orogens. In this study, we ...
Now showing items 61-80 of 489