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Browsing ELibrary by Title
Now showing items 11674-11693 of 21768
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(2004)Current phylogenetic hypotheses for the dicynodonts conflict, probably because the characters used, especially those of the jaws and facial region, show considerable convergence. Characters of the braincase and basipterygoid ...
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(1996)We investigate here the ridge jump that led to abandonment of the Galapagos Rise and formation of the Bauer scarp during the initiation of the present day configuration of the East Pacific Rise since the lower Miocene. We ...
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(1999)The bed-by-bed standard of the Silurian for East Siberia is used to correlate stratigraphic sequences all over the Siberian platform and Taimyr. Fossil faunas and floras of the standard are very representative, because the ...
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(1998)The bed-by-bed standard of the Silurian for East Siberia is used to correlate stratigraphic sequences all over the Siberian platform and Taimyr. Fossil faunas and floras of the standard are very representative, because the ...
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(1998)We have determined the solidus temperatures and liquid compositions for batch melts of fertile and depleted lherzolite in the 0–15% melting interval at 1.5 GPa. Because establishment of equilibrium is difficult at very low ...
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(2004)The dissolution behavior of natural, ordered kutnahorite (Mn1.14Ca0.82Mg0.04Fe0.012(CO3)2) and a disordered, calcian rhodochrosite (Mn1.16Ca0.78Mg0.06(CO3)2) precipitated in the laboratory was investigated in deionized ...
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(2003)Groundwater has long been an active area of research driven by its importance both as a societal resource and as a component in the global hydrological cycle. Key issues in groundwater research include inferring rates of ...
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(2003)Rivers carry the products of continental weathering, and continuously supply the oceans with a broad range of chemical constituents. This erosional signature is, however, uniquely moderated by biogeochemical processing ...
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(2005)The radiolarian Beothuka terranova occurs in the Arenigian Didymograptellus bifidus Biozone (uppermost Lower Ordovician) of Spitsbergen (Svalbard), associated with a diverse and well-preserved radiolarian fauna. The presence ...
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(2000)The Berriasian section outcropping in the right-hand side of the Bel'bek River valley (southwestern Crimea) is described. The lithological and paleontological characteristics of 10 members recognized in the section are ...
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(2003)Volcanic lake waters have a bimodal pH distribution with an acidic mode at pH 0.5–1.5 and a near neutral mode at pH 6–6.5, with relatively few samples having pH 3.5–5. To investigate the reasons for this distribution, the ...
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(2002)Superplumes have been put forward as a driving mechanism for a variety of global phenomena, ranging from geomagnetic reversal anomalies to global climate warming via massive additions of volcanic CO2. Here I propose that ...
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(1986)Vertical distributions and horizontal surface transects of dissolved and particulate Al at several locations in the Pacific Ocean are presented here. Concentrations of dissolved Al in the Pacific range from 0.3 to 5 nmol/kg ...
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(1998)The accretion of the major volatiles of the Earth is described in the frame of the integral Enstatite Chondrite model [Javoy, M., 1995. The integral Enstatite Chondrite model of the Earth. G.R. Lett., 22, 2219–2222.]. The ...
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(2003)The Black Sea basin originated as a back-arc basin during Cretaceous times. Continental rifting took place during the Aptian to Albian with large-scale crustal thinning and separation occurring since the Cenomanian, mainly ...
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(1996)Ocean island basalts (OIBs) possess uniformly low B contents, and lower B/Nb and B/K2O ratios than mid-ocean ridge basalts (MORBs). As with Pb, B enrichments in both MORBs and OIBs are substantially lower than those of arc ...
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(2002)Distribution of small shelly fossils (SSF) in the Tommotian and upper Nemakit-Daldynian stages is revised in all main reference sections of the Siberian platform, particularly in its eastern facies zone. Correlation of ...
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(2003)Fine-grained assemblages of majorite and glassy grains are for the first time identified in a shock-induced melt vein in an H chondritic meteorite. The bulk chemical composition of these aggregates is similar to that of ...
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(1997)Granitic magmas residing at high levels in the continental crust may be subjected to stress transients on a wide range of time-scales. The origins of the stress transients may be internal, deriving from the volume evolution ...
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(1996)Taking advantage of the availability of a continuous sea surface temperature (SST) record at Kenting, southern Taiwan, we have carried out a calibration of D[SrCa]-SST (D: distribution coefficient) relationships for Porites ...
Now showing items 11674-11693 of 21768