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Now showing items 1-20 of 41
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(2004)Glauconitic grains are abundant in sandstones and siltstones from Albian and Cenomanian (transition between Lower and Upper Cretaceous) formations of southeastern France. Morphological and crystal-chemical data show that ...
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(2006)New radiolarian ages for blocks radiolarian cherts associated with other blocks of distal pelagic facies and ophiolitic lithologies within the Lycian Mélange, SW Turkey, indicate deposition during Mid-Jurassic to Early ...
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(2003)A geochemical study of the Cenomanian andesitic and basaltic volcanic rocks in the lower part of the Eastern Sikhote-Alin volcanic belt was performed. Petrologic and geochemical features of the rocks correspond to products ...
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(2004)The Middle Cenomanian-Early Turonian radiolarians are studied from two sections of the central Pontic Mountains (northern Turkey) and three sections of the Crimean Mountains. The type section of the Tomalar Formation ...
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(2006)The hydrochemistry of major ions and environmental isotope compositions (18O, 2H and tritium) of water samples have been used to investigate the characteristics of rainfalls, surface water and groundwater in the Damascus ...
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(2002)Polypteriformes (or Cladistia) and Lepisosteiformes (or Ginglymodi) are two groups of freshwater fishes with ganoid scales. The earliest fossil records of these taxa are Albian (Lepisosteiformes) and Cenomanian (Polypteriformes) ...
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(2000)The Messoyakha gas field has long been considered a world unique field where gas is extracted from natural gas hydrates. At the same time, this idea has been based solely on implicit evidence. The present study addresses ...
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(2006)The evolution of Tethyan phosphogenesis during the Cretaceous-Eocene is examined to try to explain fluctuations of phosphogenesis through time, and whether or not they reflect long-term changes in ocean circulation or in ...
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(2006)Changes in morphological diversity and taxonomic composition of late Albian-early Turonian foraminiferal and radiolarian assemblages from the northern Peri-Tethys are considered. Several stages are defined in evolution of ...
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(1989)Detailed stratigraphic schemes of the Upper Cretaceous sediments in the Caucasus allowed us to identify the presence of hiatuses and intraformational erosion surfaces based on the omission of one or another stratigraphic ...
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(2001)A new taxon Freyantha sibirica gen. et sp. nov. is erected for a delicate racemose inflorescence from the Cenomanian of the Tchulymo-Yenisey Basin, West Siberia. The inflorescence bears male flowers of partly connate stamens ...
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(2003)Carbon and oxygen isotope data from a succession of Cretaceous (Barremian-Cenomanian) age recovered from the Pacific Ocean (DSDP site 463) are presented. The carbon isotope curve reveals a large isotope excursion within ...
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(1998)A section of Cenomanian-Santonian deposits in the Transaltai Gobi (southwestern Mongolia) is described and analyzed. In lithological features and composition of ostracode, mollusk, and charophyte assemblages these deposits ...
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(2004)Pistillate heads of Anadyticarpa altingiosimila gen. et sp. nov. from the Late Albian-Early Cenomanian of northeastern Russia are assigned to the Hamamelidaceae (Altingioideae) on the basis of their microstructure. The ...
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(2003)An isolated maxillary tooth and opisthocoelous anterior thoracic or posterior cervical vertebral centrum of a duck-billed dinosaur, Hadrosauroidea indet., are described. These parts originate from the marine Albian-Cenomanian ...
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ORIGIN OF CENOMANIAN NODULAR PHOSPHORITES IN THE DNIEPER-DONETS DEPRESSION (PALEOGEOGRAPHIC ASPECT) (2006)Paleogeographic settings of the Dnieper-Donets Depression are discussed with consideration of its Cenomanian provenance, land-sea proportions, and paleoclimate. The role of the Jurassic-Cretaceous weathering crust that ...
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(1990)Zone of oil and gas accumulation encompassing the Nadym-Pur, Pur-Tzov, Gydansk and Yamal oil and gas regions has been established in the northern part of West Siberia. A characteristic feature of this zone is the development ...
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(1998)Phosphorites of various types occur in the Phanerozoic sedimentary cover of the Russian Craton. They were deposited in six phosphorite basins, all of which contain economic deposits. These basins are grouped into peri- and ...
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(2006)We tested characteristic elements of the Cenomanian bed in the N petroleum field. In this work, we present the results of an investigation of an element of rock bed represented by a parallelepiped 200 m × 200 m × 132.8 m ...
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(1999)About one third of the actual global recoverable natural gas reserves is accumulated in the West Siberian Basin in several super-giant and mega-giant as well as numerous smaller gas fields. The elucidation of the nature ...
Now showing items 1-20 of 41