xmlui.ArtifactBrowser.ConfigurableBrowse.title.metadata.age
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- xmlui.ArtifactBrowser.ConfigurableBrowse.trail.metadata.age
JavaScript is disabled for your browser. Some features of this site may not work without it.
xmlui.ArtifactBrowser.ConfigurableBrowse.title.metadata.age
Now showing items 41-60 of 174
-
(2003)The aim of this paper is to discuss the Late Precambrian rock complexes in the southern margin of the Siberian Craton, associated with the extension. The analysis of the data available suggests two episodes of intracontinental ...
-
(2002)This paper describes the Late Precambrian geologic complexes from the southern margin of the Siberian Craton, associated with the extension epochs. Analysis of the data available suggests that there were two episodes of ...
-
(2002)Located at western portion of northern margin of North China craton, the Baotou-Bayan Obo district is one of the most important Fe-REE-Nb and Au metallogenic provinces in China. Presently, about 52 gold deposits and prospects ...
-
(1997)Radiometric dating, including numerous high-precision U-Pb baddeleyite and zircon ages, of Paleoproterozoic flood basalts, dike swarms, and layered mafic intrusions worldwide, indicates that a substantial volume of mafic ...
-
(2003)In the Punggi area of the northeastern part of the Yeongnam Massif, one of Precambrian basement terrains in Korean Peninsular, the metamorphic grade increases from the amphibolite- to the granulite-facies zones towards the ...
-
(2001)The formation of Gondwana during the late Neoproterozoic to early Cambrian times (550-530 Ma) was traditionally viewed as the welding of two, more or less contiguous, Proterozoic continental masses called East and West ...
-
(2003)Geological sedimentary dolomite samples from the Superior Proterozoic are studied using electron paramagnetic resonance (EPR) spectroscopy. The complex spectra in the g=2.0 region is composed of Mn2+ lines and signals due ...
-
(1996)Carbonate-rich sedimentary rocks of the western Anabar region, northern Siberia, preserve an exceptional record of evolutionary and biogeochemical events near the Proterozoic/Cambrian boundary. Sedimentologically, the ...
-
(2001)Sensitive high resolution ion micro-probe (SHRIMP) U–Pb analyses of zoned zircons were performed to constrain the age and geodynamic significance of the Kokchetav ultrahigh-pressure (UHP) metamorphic rocks, which recrystallized ...
-
(2003)The Fe isotope composition of Proterozoic to modern clastic sedimentary rocks and aerosols defines a range in 56Fe values that is only slightly more variable than the range of Fe isotope compositions measured in terrestrial ...
-
(2002)Deep seismic reflection profiles collected across Proterozoic-Archean margins are now sufficiently numerous to formulate a consistent hypothesis of how continental nuclei grow laterally to form cratonic shields. This picture ...
-
(1983)Linear extensional rift and rift-like structures have been generated many times during various periods of the Earth's history since early times. These structures have varied with time, however, in scale, morphology, ...
-
(1988)Metallogenesis of manganese in space and time is reviewed here in the light of the progressive development of the atmosphere, the hydrosphere and the lithosphere attendant with the varied styles of tectonism. Economic ...
-
(2002)The isotopic composition of He and Ar was analyzed in rocks and minerals from the Early Protero-zoic Litza-Araguba diorite-granite complex in the northwestern part of the Kola Peninsula. The initial 4He/3He ratio of the ...
-
(2000)The major-element composition of a grain of peridotitic Cr-pyrope garnet, coupled with a temperature estimate (TNi) derived from its Ni content, can be used to calculate the forsterite (Fo) content (100Mg/(Mg+Fe)) of the ...
-
(2004)The post–2.0 Ga Proterozoic C isotope record reveals two distinct, yet interrelated trends: a stepwise increase in average δ13C from ∼0‰ (calculated with respect to the Peedee belemnite isotope standard) prior to ca. 1.3 ...
-
(2003)The late Proterozoic Dovyren dunite-troctolite-gabbro layered massif in the northwestern Baikal area has the morphology of a sill and shows evidence of the replacement of a terrigenous-sedimentary rock sequence, including ...
Now showing items 41-60 of 174