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Browsing by Title
Now showing items 19565-19584 of 43490
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(2000)To understand the thermal evolution of the mantle following the aggregation of non-subductable thick continental lithosphere, we study a numerical model in which a supercontinent, simulated by high viscosity raft, HVR, ...
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(2002)Fast-flowing ice streams drain huge basins within modern ice sheets and are a mechanism for rapid iceberg production and mass loss. Some ice streams are known to be unstable, and to switch between fast flow and stagnation. ...
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(2006)The Dzhugdzhur–Stanovoi mobile belt (DSMB) represents one of the most intricate tectonic structures of the Siberian Craton.1 In addition to strongly metamorphosed complexes that are traditionally referred to as the Early ...
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(2002)The Tokur deposit explored to a depth of 400 m and distance of 3 km is well studied. The enclosing Middle-Upper Paleozoic(?) sandy-clay rocks forming the Chelogor anticline with a dome-shaped arch and of a latitudinal ...
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(Elsiver, 2015-12-01)The primary goal of this paper is to summarize all of the published data on the Tolbachik volcanic massif in order to provide a clear framework for the geochronologic, petrologic, geochemical and to a lesser extent the ...
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(2006)The convergent plate boundary marked by the Tonga-Kermadec arc system is one of the clearest examples of an intra-oceanic arc on the modern Earth. Arising from ground breaking research in the 1970's and continuing through ...
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(2006)The crystal structures of brandtite [Ca2(Mn,Mg)(AsO4)2 (H2O)2, monoclinic, a 5.877(1), b 12.957(2), c 5.675(1) Å, β 108.00(3)°, V 411.0 Å3, space group P21/c, Z = 2], collinsite [Ca2(Mg,Fe) (PO4)2(H2O)2, triclinic, a ...
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(2003)Early Ordovician (Late Arenig) limestones from the SW margin of Baltica (Scania–Bornholm) have multicomponent magnetic signatures, but high unblocking components predating folding, and the corresponding palaeomagnetic pole ...
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(2006)In this chapter, we have provided a comparatively brief overview of the myriad potential geochemical and biochemical processes that can occur when earth materials come into contact with body fluids via inhalation, ingestion, ...
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(2004)On a global scale, peridotitic garnet inclusions in diamonds from the subcratonic lithosphere indicate an evolution from strongly sinusoidal REEN, typical for harzburgitic garnets, to mildly sinusoidal or “normal” patterns ...
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(1998)Experimental data indicating increase of crystal-melt (fluid) partition coefficients in the range of microconcentrations of trace elements are reviewed and analyzed in detail. This concentration dependence of partition ...
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(PANGAEA, 2000-09-25)
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(2006)The shift from explosive to effusive silicic volcanism seen in many historical eruptions reflects a change in the style of degassing of erupted magma. This paper focuses on such a transition during the largest eruption of ...
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(2006)Fractional crystallization of peraluminous F- and H2O-rich granite magmas progressively enriches the remaining melt with volatiles. We show that, at saturation, the melt may separate into two immiscible conjugate melt ...
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(2001)A comprehensive evaluation of the transport of U, Th, Ra, and Rn nuclides of the 238U- and 232Th-decay series in an unconfined sandy aquifer (Long Island, NY) was conducted. Groundwater data are compared with results of a ...
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(2000)Unit-cell parameters, optical properties, and chemical compositions have been measured for 103 samples in the tremolite-actinolite-ferro-actinolite series. The average values of the non-essential constituents are: TAl = ...
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(2006)A careful analysis of low-frequency seismic events on Soufrièere Hills volcano, Montserrat, points to a source mechanism that is non-destructive, repetitive, and has a stationary source location. By combining these ...
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(2003)Species of genera currently referred to Nileidae are reviewed, and those of Hemibarrandia, Lakaspis, Peraspis and Symphysurina are excluded from the family. Nileidae are united in having a distinctive form of the hypostome, ...
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(2004)The Monorakinae is a subfamily of the Pterygometopidae characterised by the fusion of L2 and L3 in the glabella. The resulting bicomposite lobe is expanded backwards to reach the occipital furrow, displacing L1 from contact ...
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(2006)The isotopic composition of atmospheric O2 depends on the rates of oxygen cycling in photosynthesis, respiration, photochemical reactions in the stratosphere and on ?17O and ?18O of ocean and leaf water. While most of the ...
Now showing items 19565-19584 of 43490