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Browsing ELibrary by Title
Now showing items 11990-12009 of 21934
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(2001)A lower jaw containing complete tooth rows of the earliest hapalodectid mesonychian, Hapalodectes dux sp. nov., is described from the Upper Paleocene of Tsagan-Khushu, Mongolia (Naran Bulak Formation, Zhigden Member). The ...
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(2002)The earliest and most primitive shrew, Soricolestes soricavus gen. et sp. nov. from the Middle Eocene Khaychin Formation of the Khaychin-Ula II locality, Mongolia, is described. Soricolestes has typical soricid lower molars ...
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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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(2003)One of the oldest known helcionelloid molluscs, Anabarella Vostokova, is redescribed on the basis of type material from the lower Cambrian of north Siberia. Published records of the type species, Anabarella plana Vostokova, ...
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THE EARLY DIFFERENTIATION HISTORY OF MARS FROM 182W-142ND ISOTOPE SYSTEMATICS IN THE SNC METEORITES (2005)We report here the results of an investigation of W and Nd isotopes in the SNC (Shergottite-Nakhlite-Chassignite (martian)) meteorites. We have determined that ε182W values in the nakhlites are uniform within analytical ...
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(2001)The early Kazanian flora of the Soyana River site includes the following plant groups: ruflorians Rufloria sylovaensis (Neub.) comb. Nov.; vojnovskyans Cordaites sp., Crassinervia sp., Lepeophillum sp., Sylvella sp., ...
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(2003)In spite of intensive sedimentological and biostratigraphic investigations of ministromatolites, their assemblages systematically studied are those of Precambrian age. Ministromatolites occurred in abundance in the Early ...
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(2003)The relationship between the tilts and strains of rocks and air pressure variations is investigated using deformation measurements from the Protvino observatory. Deformations due to air pressure are large in the observation ...
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(2000)At the present time the tectonosphere, as the region of tectonic movements, is restricted by the upper mantle, that is, by the depth of 670 km. The deeper geospheres are supposed to be tectonically inert. It is proved in ...
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THE EARTHS MISSING XENON: A COMBINATION OF EARLY DEGASSING AND OF RARE GAS LOSS FROM THE ATMOSPHERE (1994)The under-abundance of Xe in the Earth's atmosphere relative to solar system abundances has been long recognised and is usually referred to as the “missing xenon problem”. It is suggested here that this feature of the ...
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(2001)According to conventional ideas, numerous eustatic sea-level changes occurred during the Phanerozoic with amplitudes 20–100 m and periods T=1–3 Myr (third-order cycles). At the same time, it is widely recognized that ...
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(2002)The Marun–Keu complex (Polar Urals, Russia) is a poorly known member of a group of high P complexes outcropping along the length of the Uralide orogen. The central and southern parts of the complex are metamorphosed at ...
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(2002)Analytic solutions are provided for the displacement and stress fields induced by an edge dislocation in a layered medium composed of two welded half-spaces endowed with different elastic parameters. A plane strain ...
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(2005)The Ediacara biota (575–542 Ma) marks the first appearance of large, architecturally complex organisms in Earth history. Present evidence suggests that the Ediacara biota included a mixture of stem-and crown-group radial ...
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(2006)The influence of Al(OH)4- on the dissolution rate of quartz at pH 10-13 and 59-89 °C was determined using batch experiments. Al(OH)4- at concentrations below gibbsite solubility depressed the dissolution rate by as much ...
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THE EFFECT OF AL2O3 ON FE-MG PARTITIONING BETWEEN MAGNESIOWUSTITE AND MAGNESIUM SILICATE PEROVSKITE (2002)We have measured the partitioning of Fe2+, Fe3+ and Mg2+ between magnesiowustite and magnesium silicate perovskite in both Al2O3-bearing and Al2O3-free systems. Starting compositions with varying Fe/(Fe+Mg) molar ratios ...
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(2001)The solubility of water in melts of alkali feldspar endmember compositions (MAlSi3O8, M=Li, Na, K, Rb) was investigated at temperatures 825–1420°C and pressures 50–800 MPa. Water contents of isobarically quenched glasses ...
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(1998)A large body of experimental evidence shows that at low and moderate pressure (<1.5 GPa), alkali-rich silicate liquids coexisting with Mg-rich olivine and orthopyroxene are richer in silica than typical basalts. This ...
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(2001)The effect of anhydrous composition on the solubility of water in granitic melts was investigated experimentally at 800 °C and pressures from 50 to 500 MPa. Starting materials were ten natural obsidians from various ...
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(1995)The effect of metal-malonate complexation on the decarboxylation rate of malonate was studied by comparing the decarboxylation rates observed for malonate-bearing solutions with and without aqueous metal at 55, 80, and ...
Now showing items 11990-12009 of 21934