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Now showing items 21-40 of 205
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(2001)Southeastern Russia is characterized by considerable potential coal and brown coal resources. Paleogene to Neogene brown coals and Lower Cretaceous bituminous coals appear to be well developed (Khabarovsk, Bazovsky and ...
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(2002)Brachiopod-dominated palaeocommunities incorporating a structure typical of faunal groups within the Palaeozoic Evolutionary Fauna were already present in North and East Gondwana and associated terranes as early as the ...
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(2001)Carbonate platform deposits of the Shabakty Group in the Malyi Karatau Range of southern Kazakhstan contain rich brachiopod faunas of early Cambrian (Botomian)-early Ordovician (Arenig) age. Seven biostratigraphically ...
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(2003)Beyrichona taylori sp. nov., Beyrichona? angularis sp. nov., Euzepaera foveata sp. nov., Monasterium tchizhovi sp. nov., Anabarochilina karatauensis sp. nov. and the new genera Almazina with the type species A. proprius ...
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(1998)The Cambrian reef formation was limited by the Early and Middle Cambrian epochs and culminated in the Lenian-early Amgian time. Reef builders of that time were not diverse, and their agglutinative forms prevailed over ...
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(2001)Carbon isotopic oscillations are useful to elucidate the stratigraphy and biogeochemical events around the Precambrian-Cambrian transitional beds across the Siberian Platform. The similarity of trends and amplitudes of the ...
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(2006)During diagenesis of Jurassic and Cambrian oil source rock shales illite-smectite(-vermiculite) [I-S(-V)] is transformed to illite-tobelite-smectite(-vermiculite) [I-T-S(-V)]. This transformation of S layers to T layers ...
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(2004)According to the proposed hypothesis, cosmic factors were primarily responsible for the flourishing of life on Earth over the last 600 Ma. We believe that the solar orbit first reached the galactic corotation radius in the ...
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(2004)Cambrian events in the history of the different terranes comprising mosaic-block geological structures of the Altai-Sayan Folded Area is discussed. On the basis of the complex analysis of the paleontological, lithological ...
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(2006)Chinese Altai has proterozoic basement, and probably experienced four major events during Proterozoic era. Research about Precambrian basement is the base of dertermination of Altai-Momgolia microcontinent. The span of ...
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(2001)Seawater rare-earth element (REE) distributions show heavy REE enrichment and cerium depletion but these characteristics are only rarely found in ancient, marine authigenic minerals such as carbonate fluorapatite and ...
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(2006)The explosive radiation of animals on Earth during the late Early Cambrian period (~ 530-510 Ma) coincides with the deposition of enormous volumes of continentally derived sedimentary rocks throughout Gondwana. We show ...
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(2006)The region includes southeastern Yunnan and North Vietnam, which locates among the Nanhua, Yangtze and Indio-China Blocks, is a key target to study the tectonic evolution of South China and Southeastern Asian. There is a ...
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(2006)The Nellore-Khammam Schist Belt (NKSB) in South India is a Precambrian greenstone belt sited between the Eastern Ghats Mobile Belt (EGMB) to the east and the Cratonic region to the west. The belt contains amphibolites, ...
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(1996)The Neoproterozoic–Cambrian succession in the Zavkhan Basin of western Mongolia preserves early Cambrian bioconstructions of Nemakit-Daldynian to Botomian age. As elsewhere (Siberia, Morocco), the Nemakit-Daldynian ...
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(2006)This paper first provides biomarkers of Early Cambrian black rock series in the Zunyi area, Northern Guizhou. Integrated with organic carbon isotope compositions, the significant geological events are discussed in detail. ...
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(2002)The end of the Proterozoic–beginning of the Cambrian is marked by some of the most dramatic events in the history of Earth. The fall of the Ediacaran biota, followed by the Cambrian Explosion of skeletonised bilaterians, ...
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(2003)Conflicting paleogeographic reconstructions of the Ural–Mongol fold belt have been developed over the past decade; very few of them, however, have been based on paleomagnetic data, which still remain scarce. The Chingiz ...
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(2006)Early Proterozoic granitoids are of a limited occurrence in the Baikal fold area being confined here exclusively to an arcuate belt delineating the outer contour of Baikalides, where rocks of the Early Precambrian basement ...
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EDIACARIAN SPONGE SPICULE CLUSTERS FROM SOUTHWESTERN MONGOLIA AND THE ORIGINS OF THE CAMBRIAN FAUNA (1997)Carbon and strontium isotopic data are used to show that the earliest sponge spicule clusters and associated phosphatic sediments (with Anabarites) from southwestern Mongolia are of Ediacarian age. Spicule morphologies ...
Now showing items 21-40 of 205