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 101-120 of 161
-
(1989)The Dzhugdzhur pluton, the largest in the East Asian anorthosite belt, is situated on the south margin of the Aldan shield. Sm-Nd dating of the Dzhugdzhur independent anorthosites indicates their Proterozoic age and, ...
-
(2001)This article presents the results of a study of the velocity characteristics and deep structure of the upper lithosphere in Precambrian shields, based on data from regional seismic investigations. An opinion on incompatibility ...
-
(1999)Stromatolites are attached, lithified sedimentary growth structures, accretionary away from a point or limited surface of initiation. Though the accretion process is commonly regarded to result from the sediment trapping ...
-
(2003)Two section types are established in the Chupa nappe of the Early Precambrian Belomorian mobile belt (BMB) of the Baltic shield: one in the Lake Verkhnee Pulongskoe area of the stratotype region (Chupa Complex) and the ...
-
(1998)Carbonate-phtanite sediments of Bogambir suite (Uppermost Precambrian, Northern Nuratau Mountains, Uzbekistan) are to be discriminated from Ordovician and Silurian in the imbricated Variscian structure of Bogambir range. ...
-
(2001)The recently discovered Bamsk gold deposit is of a large scale. It is situated in the Amur oblast in Russia. The deposit is confined to a central type volcanoplutonic uplift of that formed during the early Cretaceous ...
-
(1998)Results of the study of the cyclicity and rhythmicity in Precambrian sequences, i.e., of periodicity in the development of sedimentation basins, magmatism, folding, and metamorphism, are discussed. Cycles and rhythms in ...
-
THE DECISION ON THE PRECAMBRIAN-CAMBRIAN BOUNDARY STRATOTYPE: A BREAKTHROUGH OR MISLEADING ACTION? (1997)The official decision to chose a section in the Burin Peninsula, Newfoundland, as the global stratotype for the lower Cambrian boundary and to define this boundary by the appearance of the trace fossils Trichophycus ...
-
(1999)Numerical modeling of the evolution of plume beneath continental lithosphere with drastic variations in thickness is performed. It is shown that plume beneath continental lithosphere behaved differently than that beneath ...
-
(1998)The response of continental weathering rates to changing climate and atmospheric PCO2 is of considerable importance both to the interpretation of the geological sedimentary record and to predictions of the effects of future ...
-
(2001)The turnover of water and 18O in the outer terrestrial sphere is investigated considering mantle degassing, subduction zone processes, hydrothermal circulation at spreading centers, seafloor alteration, and continental ...
-
(2001)The turnover of water and 18O in the outer terrestrial sphere is investigated considering mantle degassing, subduction zone processes, hydrothermal circulation at spreading centers, seafloor alteration, and continental ...
-
(1987)The 10012 m.y., 25 km diameter Boltysh impact crater was formed in Precambrian granites and granite gneisses of the Ukrainian Shield. The crater deposits have undergone minimal post-impact erosion and it is possible to ...
-
(1986)Pb, Nd and Sr isotopic compositions are reported for ultrapotassic rocks from a variety of tectonic settings. Olivine leucitites located within the Palaeozoic Lachlan Fold Belt of southeastern Australia have a range in ...
-
(1999)Acceptance of the theory of plate tectonics was accompanied by the rise of the mantle plume/hotspot concept which has come to dominate geodynamics from its use both as an explanation for the origin of intraplate volcanism ...
-
(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 ...
-
(2004)The thermal state of the upper mantle beneath tectonic structures of various ages and types (Archaean cratons, Early Proterozoic accretionary and collisional orogens, and Phanerozoic structures) is characterized by geotherms ...
-
(2001)The thermal thickness of Precambrian lithosphere is modeled and compared with estimates from seismic tomography and xenolith data. We use the steady state thermal conductivity equation with the same geothermal constraints ...
-
(1996)A small suite of trace fossils from the Zavkhan Basin (Govi-Altay) includes many of the ichnotaxa typical of the Nemakit-Daldynian, Tommotian and younger Cambrian stages, and other indeterminate forms. The traces are almost ...
Now showing items 101-120 of 161