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 9405-9424 of 21934
-
(2001)Recent efforts at supercontinental reconstruction for the late Precambrian (e.g., the SWEAT hypothesis Moores, 1991) have commonly invoked an uncertain lacustrine interpretation for deposition of the Mesoproterozoic ...
-
(2004)The data on the geological and geographical distribution of pre-Visean foraminifers in central Asia and Kazakhstan are generalized, foraminiferal assemblages of various age are characterized, and the most important points ...
-
(2001)The West Lithuanian Granulite (WLG) and East Lithuanian domains (ELD) form the Proterozoic basement of Lithuania and can be distinguished on the basis of differing structural patterns, lithologies, and evolutionary histories. ...
-
(2005)The microfossils examined in acritarchs from the Neoproterozoic rocks in the southern margin of the Siberian craton have been ecobiologically interpreted. The studied sequences are of particular interest as they represent ...
-
(1998)Deep seismic reflection data from the 1995 Urals Seismic Experiment and Integrated Studies (URSEIS) transect of the Southern Urals document a distinct ˜5 km vertical offset of the Moho beneath the Uralian foreland, here ...
-
(2001)Prominent maxima in black shale abundance and in black shale/total shale ratio occur at 2.0-1.7 Ga, with less prominent peaks in the Late Neoproterozoic (800-600 Ma) and in the Late Archean (2.7-2.5 Ga). Peaks in chemical ...
-
(1983)The current situation in 1982 regarding the status and validity of the Ulakhan-Sulugur section on the Aldan River as a candidate for the global stratotype section and point for the Precambrian-Cambrian (PC-C) Boundary is ...
-
(2003)The largest ore deposits of platinum group metals are assigned to the low-sulfide type. They are commonly confined to specific units (reefs) within large layered massifs (Bushveld, Stillwater, Great Dike, Fedorov-Panskii, ...
-
(2002)A precious metal distribution in constituents of the dispersed carbonaceous substance (DCS) in ores from the Sukhoi Log gold deposit has been studied. Bitumens (soluble constituents) are hydrocarbons consisting of carbonic ...
-
(2004)The distributions of Au, Ag, Pt, and Pd were examined in the ore-hosting rocks, magnetite and skarn bodies, and sulfide associations of contact-metasomatic deposits at the main iron ore fields of Gornaya Shoriya. Magnetite ...
-
(2001)Data on platinum-group minerals (PGM): moncheites, sperrylites, Pt-Pd-telluride, and gold first discovered from massive pyrrhotite lenses in anorthosites of Lantar section of Dzhugdzhur massif are brought up in the paper. ...
-
(2004)A new method of precipitation calculation, based on cloud microphysics parameterization is presented. The main idea of the method is to parameterize the evolution of distribution function during precipitation formation ...
-
(2004)Siderite was precipitated from NaHCO3 and Fe(ClO4)2 solutions under anaerobic conditions at 25°C and 1 atm total pressure using a modified version of the chemo-stat technique and the free-drift technique. Samples of solution ...
-
(1997)Precipitation rates of CaCO3 from supersaturated solutions in the H2O - CO2 - CaCO3 system are controlled by three rate-determining processes: the kinetics of precipitation at the mineral surface, mass transport of the ...
-
(1999)A microbial biofilm consortium enriched from Shield surface water is able to mediate geochemical cycling of iron within a biofilm. Iron can be leached from Fe(II) containing minerals such as magnetite, biotite and ilmenite ...
-
(2005)Magnesium silicate precipitation experiments were carried out in alkaline solutions in the temperature range 39°C–150°C. Titrations were carried out at room temperature where the pH of an aqueous solution containing magnesium ...
-
(2001)Laser ablation microprobe-inductively plasma-mass spectrometry (LAM-ICP-MS) with a frequency quadrupled Nd-YAG UV laser (266 nm) has been used as a fast and relatively low cost technique to successfully determine the ...
-
(2001)We have developed a new, highly precise method for U isotopic analysis using a thermal ionization mass spectrometry (TIMS) by measuring UO2+ ions emitted from a very small amount (100-10 ng) of U. A new ionization activator, ...
Now showing items 9405-9424 of 21934