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Browsing ELibrary by Title
Now showing items 8710-8729 of 21638
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(1997)The Upper Ordovician-Lower Carboniferous brachiopod assemblages are described and the basic framework of the Paleozoic stratigraphy in the West Siberian Lowland is substantiated by the stratigraphic distribution of these ...
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(2003)In order to date the cessation of magmatic activity and characterize the final stage of Paleozoic magmatism in the northeast Baltic Shield, we carried out isotope-geochemical investigation of dikes that are abundant within ...
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(2002)The well-known Variscan basement areas of Europe contain relic terranes with a pre-Variscan evolution testifying to their peri-Gondwanan origin (e.g., relics of Neoproterozoic volcanic arcs, and subsequent stages of ...
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(2002)Biogeographically distinctive Paleozoic fossil biotas from the Farewell terrane (which includes three previously defined subterranes, Nixon Fork, Dillinger, and Mystic) of southwestern Alaska document close ties to Siberia ...
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(2003)Three new Middle–Late Ordovician and two new Early Carboniferous paleomagnetic poles have been obtained from the North Tien Shan Zone (NTZ) of the Ural–Mongol belt in Kyrgyzstan and Kazakhstan. Paleolatitudes for the ...
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(2004)The study of Paleozoic rocks in the easternmost exposed section and eastern foothills of the Polar Urals (Shchuch'ya synclinorium) in the Shchuch'ya River basin is of great importance for the description of the rock complexes ...
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(2003)A major macroevolutionary trend in gastropod larval shell morphology occurred throughout the middle and late Paleozoic. The majority of Ordovician and Silurian gastropods have openly coiled initial whorls; this morphology ...
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(1990)Data obtained in regional geophysical studies by the Yeniseygeofizika Corporation on the southeastern margin of the West Siberian Block have led to a new interpretation of the geological structure and developmental history ...
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(1999)Using the Berezovo area of the Don-Medveditsa dislocations, the Paleozoic history of the region is reconstructed using a new method of computer data processing, which allows one to plot paleostructural maps. It was found ...
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(2000)The pre-Mesozoic section exposed by reference Vezdekhodnaya BH-4 to a depth of 5005 m is made up of Cambrian (?) granodiorites at its base followed upward by the volcanoterrigeous sequence of the Lisitsa measures and a ...
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(1996)Two intrinsically different processes, break-up of supercontinents after mantle insulation (‘hot-spots’) and early formation of supercontinents after mantle cooling (‘cold-spots’), show causal links with periods of low ...
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(2003)Existing methods for the palinspastic reconstruction of structure maps do not adequately account for heterogeneous rock strain and hence cannot accurately treat features such as fault terminations and non-cylindrical folds. ...
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(1985)In terms of plate tectonic concepts, horizontal movement are responsible for the formation of fold belts, and modern structures are interpreted by the position of the belt relative to the zones of plate collision. Paleomagnetic ...
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(2004)Drill cores from the newly discovered Baronskoe-Kluevsky Pd–Au deposit (Volkovsky massif, Central Urals) have been investigated by reflected-light and electron microscopy, and the ore minerals were analyzed by electron ...
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(2005)Monomeric palladium(II) chloro aqua complexes of the form PdClr(H2O)4-r2-r (r = [0,4]) were studied both experimentally and theoretically to gain insight on both the stabilities and the nature of palladium-chloride ...
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(2004)The formation of platinum-group-element (PGE) deposits in layered intrusions involves an interplay of sulfide saturation and modifications that might be caused by migrating silicate liquid and volatile fluid. The program ...
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(2001)The porphyry Cu–Mo deposits in the southern Siberian craton and Northern Mongolia including subduction-, collision-, and rift-related igneous series of early Paleozoic to Mesozoic age, are all characterized by varying ...
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(2004)Peculiar mineralization of noble metals, which includes several generations of gold-bearing minerals, is described. These minerals make up metasomatic ingrowths in magmatic galena-magnetite-pentlandite-cubanite-talnakhite ...
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(1997)The studied palynoassemblages were collected from the maar lacustrine sediments deposited in the upper parts of the completed pipe structures located in the south and southeast of the Tunguska paleovolcanic area. The ...
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(2001)Palynological characteristics of Eocene-Miocene deposits of the Tatar Strait coast between the Son'e and Dembi bays (eastern Sikhote Alin) are presented. The study spore-and-pollen assemblages and plant imprints show that ...
Now showing items 8710-8729 of 21638