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Browsing ELibrary by Title
Now showing items 7761-7780 of 21936
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(1998)There is no abstract for this paper.
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(2005)In the Great Caucasus, the Lesser Caucasus and Eastern Turkey, the distribution of Neogene to Quaternary volcanic cluster geometries, paleo-stress field data of the Lesser Caucasus area (Republic of Armenia) and the P axes ...
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(1988)Very large neon isotopic anomalies have been accurately measured in mid-ocean ridge basalt glassy samples from diverse locations worldwide. Values for20Ne/22Ne range up to ∼ 13 and21Ne/22Ne values range up to ∼ 0.07 (present ...
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(1998)We present He, Ne, and Ar data on stepwise heating experiments for the CM-2 chondrite LEW90500 and on noble gas isotopic abundances of the anomalous CK chondrite Maralinga. In LEW90500 we observe at least 0.20 x 10-8 ...
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(2001)The Tuva-Mongolia Massif is a composite Precambrian terrane incorporated into the Palaeozoic Sayany-Baikalian belt. Its Neoproterozoic amalgamation history involves early (~800 Ma) and late Baikalian (600–550 Ma) orogenic ...
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(2004)Neoproterozoic tectonics is dominated by the amalgamation of the supercontinent Rodinia at ca. 1.0Ga, its breakup at ca. 0.75Ga, and the collision between East and West Gondwana between 0.6 and 0.5Ga. The principal stages ...
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(2003)The geological, structural and tectonic evolutions of the Yenisey Ridge fold-and-thrust belt are discussed in the context of the western margin of the Siberian craton during the Neoproterozoic. Previous work in the Yenisey ...
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(1999)Age of metamorphic and magmatic rocks from the Mountainous Shoriya is measured using U-Pb, Sm-Nd, Rb-Sr, and Ar-Ar dating. As established, the oldest rocks of the region are metabasites of the Konzhin Complex (Sm-Nd isochron ...
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(2002)The effusive rocks of the Ratno Beds of the Volhynian Series known from the western slope of the Ukrainian Shield are represented by lower Vendian flood basalts whose normative composition is that of quartz tholeiites. ...
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(2003)Geochemical, petrographic, mineralogical and geochronological study of mafic dikes in the Sharyzhalgai massif of the south Siberian craton has revealed the presence of three distinct generations of dikes. The youngest and ...
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(2004)The eastern margin of the East European Craton (EEC) has a long lasting geological record of Precambrian age. Archaean and Proterozoic strata are exposed in the western fold-and-thrust belt of the Uralides and are known ...
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(2003)The paper reports data on the petrology and geochemistry of granitoids of the Glushikha Complex in the Transangara area of the Yenisei Range and presents U-Pb, Sm-Nd, Rb-Sr, and Ar-Ar isotopic geochemical data on these ...
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(2002)Thermal contraction cracking of permafrost produced sand-wedge polygons at sea level on the paleo-equator during late Neoproterozoic glacial episodes. These sand wedges have been used as evidence for high (=<54°) paleo-obliquity ...
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(2004)New paleontological findings, analysis of section structure, and literature data on the Neoproterozoic stratigraphy of the Altai-Sayan Folded Area, ASFA, provide support to the recognition of three heterochronous polyfacies ...
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(2003)The paper reviews and integrates the recent geological and geochronological data, which allow us to recognize three stages of the evolution of the Paleo-Asian Ocean.The opening of the Paleo-Asian Ocean at 970-850 Ma is ...
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(2002)We present a synthesis and a new account of the geological and tectonic history of the terranes of the Chinese Paleozoic Altai orogen together with new, single zircon ages for granitic and rhyodacitic rocks. A central ...
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(2004)Fishes are often thought to have passed through mass extinctions, including the Cretaceous–Tertiary (KT) event, relatively unscathed. We show that neoselachian sharks suffered a major extinction at the K/T boundary. Out ...
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(2003)In this work we use the thin-shell approximation to model the neotectonics of the western part of the Africa-Eurasia plate boundary, extending from the Mid-Atlantic ridge to Tell Atlas (northern Algeria). Models assume a ...
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(2001)The east Anatolian plateau and the Lesser Caucasus are characterised and shaped by three major structures: (1) NW- and NE-trending dextral to sinistral active strike-slip faults, (2) N-S to NNW-trending fissures and /or ...
Now showing items 7761-7780 of 21936