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Browsing ELibrary by Title
Now showing items 4280-4299 of 21934
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(1995)Quadrupole mass spectrometric (QMS) analysis of small amounts of inclusion fluid (<1 milligram) released by crushing and decrepitation requires methods to: (1) determine the amount of molecular fragmentation relative ...
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(2001)Sediment sorption capacity was measured in a coastal environment over a 2-year period using lysine as a model compound. Sorption capacity was found to vary over time but did not seem to follow a clear seasonal pattern or ...
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(2001)The effect of magnetic interactions has been commonly neglected in the interpretation of the anisotropy of magnetic susceptibility (AMS) of igneous rocks, despite the likely occurrence of magnetic interactions due to their ...
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(2002)A geochemical study of Cryogenian (late Neoproterozoic) limestones from western Mongolia is presented, including δ13C (carbonate and kerogen), δ18O, 87Sr/86Sr and rare earth element data. Carbon isotope compositions confirm ...
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(2001)Compositions of ∼2500 spinel–olivine pairs and 400 melt inclusion–spinel pairs have been analysed from 36 igneous suites from oceanic, arc and intraplate tectonic settings. Our data confirm that Cr-spinel mg -number is ...
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(2003)During their deceleration through the Earth's atmosphere, meteoritic materials, i.e., interplanetary dust particles, micrometeorites and meteorites, experience thermal shocks which may alter their pristine mineralogy, ...
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(2001)A model has been developed to investigate the sensitivity of magma permeability, k, to various parameters. Power-law relationships between k and porosity φ are revealed, in agreement with previous experimental and theoretical ...
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(2004)A 300-m (1000-ft)-thick succession of shallow- and warm-water carbonates has been studied in well cores from the southernmost Barents Sea, offshore north Norway. These upper Paleozoic strata contain numerous zones of ...
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(2002)Thermochemolysis experiments with tetramethylammonium hydroxide (TMAH), on three Late Jurassic kerogens with contrasting features, confirmed the major role of encapsulation into aliphatic structures for the survival of ...
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(1988)A new approach to identifying the geochemical character of each element in the hydrosphere has recently been developed, in which the distinctive trends of the relationship between its concentration in water and the rate ...
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(2005)The survival of coesite in ultrahigh-pressure (UHP) rocks is most commonly attributed to rapid exhumation, continuous cooling during uplift, and inclusion in strong phases that can sustain a high internal over-pressure ...
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(2001)We develop numerical simulations of basaltic lava flowing laminarly over a basalt substrate in order to examine the details of the lava dynamics and thermal boundary layers and to understand the implications for substrate ...
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(2003)Dissolved oxygen concentrations in river-sediment porewaters are reported and modelled using a zero-order reaction rate and the Monod equation. After mixing the sediments and allowing settling, the dissolved oxygen profile ...
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(1997)The paper sets out to determine the influence of various factors on the metal resources of hydrothermal systems in the ocean on the basis of a combined analysis of the results of an investigation of natural objects and ...
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(2001)The characteristics and composition of particulate matter and water mass were determined within the Amur River estuary-Sea of the Okhotsk system during the summers of 1992 and 1993 using a variety of techniques including ...
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(2001)The factors which control soil moisture patterns in a semiarid area are determined in two different locations: a burnt zone with little vegetation and an unburnt zone with a greater vegetal cover. In the burnt area, the ...
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(1986)In the framework of plate tectonics, loci of trench-arc-backarc (T-A-BA) systems are identified with those of subduction, and various features characteristic to T-A-BA systems are causally attributed to subduction. While ...
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(2003)The Earth may have been globally ice-covered several times during the Proterozoic. While the Neoproterozoic and the Paleoproterozoic glaciations may have been 'snowball' Earth events, there is no evidence for such glaciation ...
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(1989)In certain sedimentary basin seismic exploration has revealed geological bodies consisting of layers that taper in one direction, sometimes to the point of pinching out. These layered structures occur widely along the ...
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(2003)Fassaite is a major component of Ca-Al-rich inclusions (CAIs) of Types B and C that crystallized from liquids. In contrast, this mineral is rarely reported in Type A inclusions and has been much less studied. In this paper, ...
Now showing items 4280-4299 of 21934