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Browsing ELibrary by Title
Now showing items 7741-7760 of 21936
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(2002)A Nd isotope map of early Cambrian epeiric basins has been inferred from the Nd isotopic signature recorded in phosphatic Small Shelly Fossils. The most radiogenic [epsilon]Nd(t) values characterize water reservoirs along ...
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(1996)The Nd isotopic composition of Atlantic and Tethys seawater, as deduced from marine phosphorites, varied considerably during the past 180 Ma. The early Tethys and Central Atlantic seawater from 180 to 160 Ma ago (Early-Middle ...
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(2004)Correlation of the Korean Peninsula with the neighboring South and North China blocks has been one of the most important and long debated issues in East Asian tectonics. The eastward extension of the Chinese collisional ...
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(2004)The Taihang-Da Hinggan Mountains Tectonomagmatic Belt is the Mesozoic magmaeric activities concentrating area in eastern China, which passes through the two tectonic units of the North China Craton and the Inn Mongolian ...
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(1991)The Siberian Flood Basalt Province (SFBP) of Permo-Triassic age is one of the largest flood basalt provinces with an estimated area of exposure of 337,000 km2, average thickness of 1 km, and a magma volume of 337,000 km3. ...
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(2003)We use finite-difference time-domain (FDTD) numerical simulations to study horizontal dipole radiation mechanisms and patterns near half-space interfaces. Time snapshots illustrating propagation of wavefronts at an instance ...
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(2004)In the last few years, Frechet (or sensitivity) kernels for seismic traveltimes have become important tools for mantle tomography. Sensitivity kernels for splitting intensity have been introduced recently for a better ...
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(1996)The near-infrared absorption bands at 5200 cm−1, assigned to molecular water, and at 4500 cm−1, assigned to hydroxyl groups bonded to network forming cations, were used to specify concentrations of water species in glasses ...
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NEAR-SOLIDUS MELTING OF THE SHALLOW UPPER MANTLE: PARTIAL MELTING EXPERIMENTS ON DEPLETED PERIDOTITE (2003)We present the results of melting experiments on a moderately depleted peridotite composition (DMM1) at 10 kbar and 1250–1390°C. Specially designed experiments demonstrate that liquids extracted into aggregates of vitreous ...
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(2003)Four seeps and mud extrusion features at the lake floor were discovered in August 1999 in the gas hydrate area in Lake Baikal's South Basin. This paper describes these features in detail using side-scan sonar, detailed ...
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(2005)The Fe-isotope signatures (d 56 Fe IRMM and d 57 Fe IRMM) of twelve chondrules, three Ca-, Al-rich inclusions (CAIs) and multiple matrix aliquots from two type 3 chondrites — Allende (CV3) and Chainpur (LL3) were measured ...
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(1996)Cosmochemical fractionations have been traditionally explained by the segregation of fine condensate dust, yet nebular turbulence prevents this dust from separating from the gas. Dense chondrules may form accumulations in ...
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(2001)Solution-mineral equilibria in the unsaturated zone above aquifers requires us to take into account the negative internal pressure of liquid water, distributed in fine pores of a partially filled medium. The proposed method ...
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(1997)A novel technique for the precise measurement of oxygen isotopes by negative thermal ion mass spectrometry (NTIMS) is presented. The technique is ideally suited to the analysis of oxygen isotopes in phosphates which form ...
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(2002)The prediction of a time series using the dynamical systems approach requires the knowledge of three parameters; the time delay, the embedding dimension and the number of nearest neighbours. In this paper, a new criterion, ...
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(1997)40Ar39Ar data for white micas from quartzite mylonites from a thrust system are evaluated with respect to whether the minerals record cooling ages or, alternatively, ages of deformation-induced neocrystallization. To address ...
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(2000)The chemical compositions, ages, and Nd and Sr isotopic compositions of Miocene basaltic volcanic rocks from the southwestern Basin and Range Province were measured. The data presented, and other data obtained from the ...
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(2004)Four vertical profiles of the concentration and isotopic composition of Nd in seawater were obtained in the western North Pacific. Two profiles from the Kuroshio Current regime showed congruently that although the Nd ...
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(2002)The aim of this work was to investigate whether neoformed Ni-phyllosilicates can be observed and identified using transmission electron microscopy (TEM) in combination with energy dispersive spectroscopy (EDS). The ...
Now showing items 7741-7760 of 21936