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Browsing ELibrary by Title
Now showing items 1389-1408 of 21934
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(2002)Although barite nodules are extremely rare in the World Ocean, they are rather widespread in the Japan Sea. They were first discovered by Japanese scientists in the Honshu Island borderland (Okada et al., 1971; Sakai, ...
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(2004)The presence of relatively abundant bedded sulfate deposits before 3.2 Ga and after 1.8 Ga, the peak in iron formation abundance between 3.2 and 1.8 Ga, and the aqueous geochemistry of sulfur and iron together suggest that ...
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(2003)The trace elemental composition of calcified larval hard parts may serve as useful tags of natal origin for invertebrate population studies. We examine whether the trace metal barium (Ba) deposits into the calcium carbonate ...
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(2004)A barium anomaly with a maximum Ba2+ concentration of 6.37mg/l was distinguished in a Cambrian-Vendian (Cm-V) aquifer system that is widely used as a drinking water source in the towns Kunda, Rakvere and Kohtla-Jrve of ...
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(2003)Barium isotopic compositions of single 2.3-5.3 μm presolar SiC grains from the Murchison meteorite were measured by resonant ionization mass spectrometry. Mainstream SiC grains are enriched in s-process barium and show a ...
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(2005)Using trace metal-defined culture conditions, we measured the cellular barium concentration in cultures of the diatom Thalassiosira weissflogii. In cultures with low Fe concentration, at a typical surface seawater Ba ...
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(2006)In this study we test if calcite shells of the common mussel, Mytilus edulis, contain barium in proportion to the water in which they grew. Similar to all bivalves analyzed to date, the [Ba/Ca]shell profiles are characterized ...
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BARIUM-RICH AUTHIGENIC CLINOPTILOLITE IN SEDIMENTS FROM THE JAPAN SEA-A SINK FOR DISSOLVED BARIUM? (1999)Exceptional barium-rich clinoptilolite, a heulandite-group zeolite, with Ba contents of up to 1.83 wt.% BaO occurs in Miocene sediments from the Yamato Basin of the Japan Sea (ODP Site 797). The clinoptilolites with highest ...
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(2006)The basal plane reactivities of the sheet silicates apophyllite and phlogopite have been studied by hydrothermal atomic force microscopy (HAFM) in situ in aqueous solutions at temperatures from 20 to 140 °C. At pH 4-5.6 ...
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(2005)The Siberian Traps represent one of the most voluminous continental flood basalt provinces on Earth. The mass extinction at the end of the Permian was the most severe in the history of life. In the present paper, these two ...
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(2003)Mesozoic intraplate continental basaltic volcanism at the Franz Josef Land (FJL) archipelago is related to the activity of the Iceland plume [1, 2]. The volcanic activity was less significant but genetically close to the ...
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(2001)This paper discusses the petrography, petrochemistry and geochemistry of basalts of the Erdagou volcanic-cherty Formation in the Taukha terrane, Southern Sikhote-Alin. The mid-Jurassic (Callovian) age of the basalts is ...
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(2000)A mineralogical classification of sulfides containing base metals (BM) and platinum group elements (PGE) is proposed based on BM-PGE ratios. Group A comprises BM sulfides carrying PGE as trace or minor elements (e.g., ...
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(2000)A mineralogical classification of sulfides containing base metals (BM) and platinum group elements (PGE) is proposed based on BM-PGE ratios. Group A comprises BM sulfides carrying PGE as trace or minor elements (e.g., ...
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(2001)Infrared (IR) spectroscopy has a long and successful history as an analytical technique and is used extensively (McKelvy et al., 1996; Stuart, 1996). It is mainly a complementary method to X-ray diffraction (XRD) and other ...
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(2001)The Mongol-Siberian belt of rejuvenated mountains is an ordered system of large domes, zones of linear warping, and the Baikal rift zone on the broad basement doming. Its morphology is paragenetically related to the shape ...
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(2003)Partial melting of the mantle is polybaric which implies that the phase relations change during partial melting. In addition to the pressure the composition of the melt depends on the melting mode. Various melting models ...
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(2001)The peneplaned Archean craton of the Fennoscandian Shield served as a platform upon which a continental margin assemblage, the Karelian Supergroup, was deposited between ~2.45 and ~1.9Ga. Major subaerial unconformities ...
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(2001)The long-term (climatic) hydrologic response of a basin may be quantified using the evaporation efficiency (E/Ep or actual evaporation ratio with potential evaporation) and runoff ratio (R/P or ratio of runoff loss to ...
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(2003)Three large batholiths formed in the Central Asian fold belt in the period 310-190 Ma: Angara-Vitim, Hangayn, and Henteyn-Daurian. They are made up of granitoids of variable composition - from tonalities and plagiogranites ...
Now showing items 1389-1408 of 21934