Browsing ELibrary by Title
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Browsing ELibrary by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing ELibrary by Title
Now showing items 13888-13907 of 21768
-
(2003)Isotopic anomalies in Mo and Zr have recently been reported for bulk chondrites and iron meteorites and have been interpreted in terms of a primordial nucleosynthetic heterogeneity in the solar nebula. We report precise ...
-
(1998)Zirkelite, a cubic mineral of general formula (Ti,Ca,Zr)O 2−x occurs as an accessory mineral in phoscorites, carbonatites and associated rocks in the Sebl'yavr complex. After pyrochlore, it is the main mineral concentrating ...
-
(2005)Copper and Zn isotope ratios of well-characterized samples from three ore facies in the Devonian Alexandrinka volcanic-hosted massive sulphide (VHMS) deposit, southern Urals, were measured using multi collector ICP-MS ...
-
(2005)High-precision Zn isotopic variations are reported for carbonaceous chondrites (CC), equilibrated (EOC) and unequilibrated (UOC) ordinary chondrites, iron meteorites from the IAB-IIICD (nonmagmatic) and IIIA (magmatic) ...
-
(1998)The solubility of zincite in mildly to strongly acidic aqueous solutions, according to the reaction ZnO + 2H+ # Zn2+ + H2O, has been measured at ionic strengths of 0.03-1.0 (stoichiometric molal basis) from 50 to 290°C at ...
-
(2001)Our detailed petrographic study of the Early Proterozoic metapelites of the Tim-Yastrebovskaya structure resulted in distinguishing the following four metamorphic zones: garnet-chlorite, staurolite-andalusite. staurolite ...
-
(2001)A scheme of small mammal (vole) zones is proposed for the Quaternary of Eastern Europe. The zonation is based on the evolutionary appearance of new forms in the Borsodia-Prolagurus-Lagurus, Mimomys-Arvicola, and ...
-
(2001)The article highlights the mineral zonality at the Grachevskoe, Kosachinskoe, and Shokpak-Kamyshovskoe uranium ore fields (Northern Kazakhstan) localized in low-temperature sodic metasomatites. The setting of these fields ...
-
(1993)The Upper Cretaceous oceanic and island-arc terranes of Northeastern Kamchatka (Russia) are intruded by numerous ultramafic and mafic to intermediate plutons. Ultramafic plutons north of Epilchik Lake show a concentric ...
-
(1992)The accumulation of information about the stratigraphic ranges and areal distribution of various groups of fauna and flora has made it possible to pass onto the zonal differentiation of all the systems of the Phanerozoic ...
-
(2003)In the mid-Middle Miocene (Konkian Phase), the Eastern Paratethys reestablished a wide connection with the World Ocean. This resulted in the migration of the marine polyhaline molluskan fauna from the Mediterranean. The ...
-
(2000)The presence of Zr isotope anomalies in the early solar system is demonstrated with the identification of 92Zr excesses and 96Zr deficits in several chondrites and the CAI Allende inclusions. The isotopic composition of ...
-
(2000)A survey of global ocean island basalt geochemistry shows a remarkably strong linear correlation (average rmr/rm2 = 0·95) between Zr and Nb concentrations. Fractional crystallization explains neither the range in Zr and ...
-
(2000)A survey of global ocean island basalt geochemistry shows a remarkably strong linear correlation (average r2 = 0·95) between Zr and Nb concentrations. Fractional crystallization explains neither the range in Zr and Nb ...
-
(2003)The Palaeoproterozoic Kuetsjarvi Sedimentary Formation from the Pechenga Greenstone Belt, NW Russia, has been studied with the purpose of determining δ13Ccarb and δ18Ocarb values in various carbonate phases from genetically ...
-
(1998)Analyses of the organic compounds in the Murchison meteorite have led to a greater understanding of the nature of extraterrestrial organic materials. However, the relationship between low and high molecular weight material ...
-
(1998)Analyses of the organic compounds in the Murchison meteorite have led to a greater understanding of the nature of extraterrestrial organic materials. However, the relationship between low and high molecular weight material ...
-
(2002)Low-molecular-weight (LMW) aqueous organic acids were generated from six oil-prone source rocks under hydrous-pyrolysis conditions. Differences in total organic carbon-normalized acid generation are a function of the initial ...
Now showing items 13888-13907 of 21768