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Now showing items 1-9 of 9
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(2003)The assembly of the eastern part of Gondwana (eastern Africa, Arabian–Nubian shield (ANS), Seychelles, India, Madagascar, Sri Lanka, East Antarctica and Australia) resulted from a complex series of orogenic events spanning ...
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(2019)Palaeoproterozoic amphibole-biotite orthogneisses with a protolith age of ~ 1840 Ma and Neoproterozoic muscovite-chlorite orthogneisses with an estimated protolith age of ~ 790 Ma have been identified in the structure of ...
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(2003)Functional, constructional, and preservational criteria led to a reinterpretation of seemingly complex trace fossils and the majority of assumed metazoan body fossils from Vendian lagerstatten. In the new scenario, Ediacaran ...
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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 ...
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(1989)There are data indicating that geochemical anomalies (particularly of elevated iridium concentrations) in the sections through sedimentary rocks are confined to boundaries marked by considerable changes in animal life in ...
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(2000)The Timan biota from Russia and Huainan biota from China proved the pre-Ediacarian Metazoa did exist in the past. In Russia, the genus Parmia Gnilovskaya of the pre-Ediacarian annelidomorphs, whose construction has distinct ...
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(2003)The relative significance of early (Finnmarkian) and late (Scandian) Caledonian deformation in N. Norway is uncertain. Early studies suggested pervasive Finnmarkian deformation whilst later results indicated a restricted ...
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(1992)The Bakeyevo biota, the oldest biota discovered in the folded area of the Urals, is described for the first time, and the important stratigraphic consequences of this discovery are examined. The discovery of the Bakeyevo ...
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(Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский государственный университет», 2017)В работе рассмотрены основы Pb-Pb метода датирования и возможности его применения на примере известняков агарингольской свиты. Изучение U-Pb системы проводилось в образцах углеродистых известняков, удовлетворяющих геохимическим ...
Now showing items 1-9 of 9