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Browsing ELibrary by Title
Now showing items 3967-3986 of 24764
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(1997)During the ARCTIC '91 expedition aboard RV Polarstern (ARK VIII/3) to the Central Arctic Ocean, a box corer sample on the Gakkel Ridge at 87°N and 60°E yielded a layer of sand-sized, dark brown volcanic glass shards at the ...
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(2001)A review is presented of the currently available evidence of life in the Precambrian, with special reference to microfossils of the size range 0.1-3 μm. The particles are spotted in thin sections of the rock under high ...
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(2006)We report a new proviverrine hyaenodontid creodont mammal, Boualitomus marocanensis, n.g., n.sp., from the earliest Eocene of Morocco, and provide new comments on Tinerhodon from the late Paleocene of Morocco. Aside from ...
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(1989)The oldest supracrustal rocks of the Olekma granite-greenstone region constitute a large 0.8 × 9.5-km erosion remnant among infracrustal formations of the Olekma granite-gneiss complex. They are components of the so-called ...
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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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(2006)Five specimens of the priapulid Maotianshania cylindrica preserved inside their lined burrows were described from the Lower Cambrian Chengjiang deposits near Kunming, southern China. The exceptional preservation suggests ...
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(2002)Despite the fact that crinoids were an important component of the benthic communities in the Early Carboniferous seas of central European Russia, their remains have been only poorly studied so far. The present work partly ...
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(2006)Solid state 13C CP/MAS NMR spectroscopy and ultimate analysis have been applied to a study of samples from the Pleistocene Drama lignite and its successive modern analogue, the Philippi peat, in northeastern Greece. The ...
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(2005)The 182Hf-182W isotopic systematics of Ca-Al-rich inclusions (CAIs), metal-rich chondrites, and iron meteorites were investigated to constrain the relative timing of accretion of their parent asteroids. A regression of the ...
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(2004)This article discusses the isotopic dates for the Albian alkaline basic rocks (116-104 Ma) in the Pribrezhnaya structural zone of the Primor'e region and investigated their mineral compositions. The graphite-ilmenite ...
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(2001)Some Early Cretaceous ammonites nominally listed in the stratigraphic schemes and works on the Lower Cretaceous stratigraphy of the Sikhote-Alin are briefly described and pictured in this paper. Side by side with the ...
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(2006)The Dambukin block of the Stanovoi terrane encloses abundant small (up to 5 km2) massifs, dikes, and sills composed of the cortlandite–pyroxenite–gabbro association. Previously, they were arbitrarily considered as Early ...
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(2006)SHRIMP zircon U-Pb ages and geochemical and Sr-Nd-Pb isotopic data are presented for the gabbroic intrusive from the southern Taihang Mountains to characterize the nature of the Mesozoic lithospheric mantle beneath the ...
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(2003)In Baikal region, Mesozoic depressions are widely noted. Their formation was accompanied by active volcanism. So far, nature of the volcanism is not totally clear. In connection with this, paleomagnetic investigations of ...
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(2004)This study is the first of a series of works on trigoniids (Class Bivalvia) from the Lower Cretaceous of the Crimea. It contains systematic descriptions of nine genera and 15 species and subspecies of trigoniids from the ...
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(2001)Early Cretaceous vertebrates at Shestakovo were known since 1953, when 2 partial Psittacosaurus skeletons were found. Intensive excavations and screen-washing at Shestakovo 1 and 3 localities, carried out since 1995 by a ...
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(2005)The plutonic rocks of the magnesian suite (Mg-suite) represent the period of lunar basaltic magmatism and crustal growth (∼4.46 to 4.1 Ga) that immediately followed the initial differentiation of the Moon by magma ocean ...
Now showing items 3967-3986 of 24764