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Now showing items 15405-15424 of 39126
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(2000)We made an extensive compilation of noble gas data obtained from MORB, oceanic island basalts (OIB) and diamonds. On the basis of this data base, we discuss the primordial noble gases in the Earth and its implications on ...
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(2003)Based on geological, petrochemical, and geochronological data, the postcollisional nature of granitoids of the Primorsky complex in western Cisbaikalia is substantiated. The age of the Primorsky complex granites determined ...
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(2003)Power laws are known to be associated with dynamic systems residing near the critical point in the state space of the system. However, both models, that of phase transitions reached by the tuning parameter (for example, ...
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(2004)The paper considers regularities in concentration and dispersion of ore-forming and petrogenic elements in some natural geochemical systems. The structural-chemical basis of silicate ore-forming systems and its influence ...
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(1992)Gold mineralisation is the result of the paragenetic interaction of magmatic (mafic and salic), regionally metamorphic and metasomatic formations. The substratum is the source of the ore material, and the paragenesis is ...
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(2003)One of the key problems in reconstructing the geodynamic environments of the Pechenga-Varzuga belt is the timing and genesis of granitoids widespread along the southern border of the belt, mostly in the southwestern framing ...
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(2000)Picrite and picritoid volcanogenic rocks in Permo-Triassic traps in the northwest of the Siberian Platform include komatiite-like varieties with CaO/Al2O3 ≥1, low concentrations of TiO2, and contents of MgO corresponding ...
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(1997)Problems concerning the methodology of subdivision and mapping of metamorphic rock units, their taxonomy, and nomenclature are discussed. Several of the most important concepts are specified, and the necessity of elaborating ...
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(2000)Application of micropaleontological (nannoplankton) and paleomagnetic methods for stratigraphic subdivision and correlation of Upper Neogene stratigraphic units in the regional scale of the Euxinian region (the Black Sea ...
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(2004)A large amount of felsic rocks with positive Euanomaly have been studied in the high-grade metamorphic complexes of the eastern Baltic Shield. Most samples were taken from the Lapland-Belomorian Belt (LBB). However, similar ...
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(2004)The cap-shaped Early Cambrian fossil Triplicatella, previously known only from Australia, is reported from the upper Lower Cambrian of North and North-East Greenland, western Newfoundland, and Siberia. The occurrence of ...
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(2004)The fossil genus Paralbunea Hu and Tao, described as an anomuran albuneid, is a junior homonym of Paralbunea Serene and a possible synonym of either the brachyuran raninid Ranilia H. Milne Edwards, 1837, or Cosmonotus Adams ...
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(2001)Methods are proposed for the processing, comprehensive analysis and interpretation of monitoring geophysical observations. The methods were tested on the basis of information from comprehensive geophysical studies conducted ...
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(IOP Publishing, 2016)In world practice, groundwater is the main raw material for iodine production. In the current geopolitical conditions, a significant part of the traditional areas of iodine production is located outside the Russian Federation. ...
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(2003)The chemical composition of minerals and their distribution in ore bodies of the Prognoz silver-polymetallic deposit has been studied. The deposit is one of the largest in northeast Russia, and its mineralogy is characterized ...
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(2002)We study the propagation of a buoyant liquid-filled fissure from a reservoir under constant pressure within the framework of linear elastic fracture mechanics. We conducted laboratory experiments by injecting aqueous ...
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(1999)Data on the local distribution of uranium throughout the bottom sediments of Lake Baikal (Akademichesky Ridge, VER-95-2, St 3BC, 53°113′12″N, 108°25′01″E) have been first obtained using neutron-fragment radiography. Uranium ...
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(1996)The kinetics of proton promoted dissolution of K-montmorillonite was investigated at 298 ± 1 K by batch experiments in the range 10−1 ≥ [H+] ≥ 10−5 M using solutions of the constant KCl concentrations of 0.03 M, 0.10 M, ...
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(PANGAEA, 2003-08-08)Parameters of provision of the phytoplankton community with inorganic nitrogen compounds in the western Black Sea in April 1993 are analyzed (specifically, dependence of rates of uptake of nitrates and ammonium by microplankton ...
Now showing items 15405-15424 of 39126