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Geotectonics - Detailed lithological, stratigraphic, and structural studies of the fold-thrust structures were conducted on New Siberia Island. We have established that the jointly deformed...  相似文献   
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Based on the new seismic data, the geological structure and evolution of the North Kara Basin are presented. The North Kara Basin formed as an Early Ordovician rift system. Approximately at the Devonian-Carboniferous boundary, the North Kara Basin suffered intraplate compressional deformations, which caused formation of inversion swells, and then it was covered by a thin Carboniferous-Permian or Permian cover. The Urvantsev Trough probably comprising Late Ordovician evaporites was distinguished in the north-eastern part of the basin. Paleozoic folded deformations took place within the limits of the Vize-Ushakov and Central Kara rises.  相似文献   
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Based on the new geophysical survey data within the South Kara basin, a system of rift troughs was established. The time of formation of the rifts was the Late Permian-Early Triassic by analogy with that of the West Siberian basin. It is probable that inversion processes took place in the Middle Triassic in rifts, located close to Novaya Zemlya. Morphologically, the rifts are represented mainly by semi-grabens. In plan view, they form closed isometric basins, similar in shape to pull-apart basins, which formed as result of sinistral transtension. The Upper Triassic sediments are widespread throughout the basin, forming the lower part of the post-rift sedimentary cover.  相似文献   
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Lithology and Mineral Resources - The U–Pb (LA-ICP-MS) dating of detrital zircons from the Upper Cretaceous Derevyannye Gory Formation in the Novaya Sibir Island revealed that tuffites and...  相似文献   
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