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Now showing items 1-20 of 163
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(1999)Following accretion of southern Siberian microcontinents to the Siberian craton in the Early Paleozoic, five cycles of K-rich silicic magmatism, progressively decaying in volume, occurred on batholithic scales throughout ...
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(Томский политехнический университет, 2019)Актуальность исследования обусловлена необходимостью расширения ресурсной базы полезных ископаемых, в том числе и золота. Крупные ареалы щелочного магматизма, такие как Алдано-Становой щит, представляют особый интерес, так ...
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(2005)The relationships between the global carbon cycle and paleo-climates on short and long time scales have been based on studies of accumulation rate of the two main components of the sedimentary carbon reservoir, organic ...
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(1998)We collected 47 sites of Upper Triassic to Middle Jurassic siltstones and sandstones and two sites of Lower Cretaceous andesites in a large basin located south of the Mongol–Okhotsk suture. The suture separates the Siberian ...
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(2002)We developed a plate tectonic model for the Paleozoic and Mesozoic (Ordovician to Cretaceous) integrating dynamic plate boundaries, plate buoyancy, ocean spreading rates and major tectonic and magmatic events. Plates were ...
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(2004)The progonocytherid cytheracean ostracod genus Lophocythere and its immediate allies in the Jurassic are reviewed. All known species of 16 genera are considered. We consider that only eight of these genera (Acanthocythere, ...
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(1996)A stable isotope study of 168 plutonic igneous rock and five water samples from Transbaikalia, East Asia, has been made, including 318 whole-rock and mineral 18O/16O analyses and 14 D/H analyses. This represents the first ...
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(1989)The first occurrences of lamproites in Soviet Union were identified on the Aldan Shield, in the region of the Murun Pluton and in the Central Aldan block. By the geological position of the lamproite bodies and the geological ...
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(2002)Fifty-six rock and 28 crude oil samples from the sub-salt and supra-salt section of the southern Pre-Caspian Basin were analyzed by organic geochemical means. Eighty-five percent of the rock samples from the Cretaceous to ...
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(1990)In metallogenic studies, it often is necessary to find the source of ore material in order to model the genesis of ore associations. For the Aldan apatite province, we shall consider what possibilities there are for ...
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(2001)Growth rings of Mesozoic fossil woods have often been used for paleoclimatological inferences. Most of the studies, however, rest upon uniformitarian deductions based on the observation of conifers from the present boreal ...
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(1999)The Tyumen superdeep borehole (TSB-6) drilled in north-western Siberia was the first that penetrated through Mesozoic deposits and probably entered the uppermost Paleozoic sediments. In the course of drilling, a clear ...
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(1997)We offer a boreal zonal standard scale providing an effective panboreal correlation and current geological dating of Mesozoic boreal sediments. The need for establishment of a boreal standard is brought about by the fact ...
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(1989)Mud volcanoes occupy a special place among natural phenomena. First, in terms of the scale of discharges of carbonaceous gases from them, the acute stage of their eruption is comparable to surface lava eruptions from cone ...
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(2001)Essential differences between the bryozoans of the order Fenestellida and those of other Paleozoic orders and Mesozoic-Cenozoic stenolaemates are shown based on the comparative analysis of their morphology and functions. ...
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(2001)The first critical review of geological and petrochemical materials based on the author's data is presented for the Mesozoic mafic rocks of northern Transbaikalia. The rocks are demonstrated to be localized within a series ...
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(1996)Chlorine is the most abundant halogen in sedimentary formation waters with concentrations from <100 to >250000 mg/l. Bromine is the second most abundant halogen at <1 mg/l to >6000 mg/l with iodine from <0.1 mg/l to >100 ...
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(1999)The Upper Mesozoic deposits of the northern and southern parts of the Korean Peninsula significantly differ from each other. The Upper Jurassic-Neocomian deposits of North Korea are represented by the differentiated volcanics ...
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(2002)Upland and shield areas of central and northwestern Europe are characterised by an abundance of relict weathering mantles (saprolites). These saprolites, if accurately dated and interpreted, may serve as an important ...
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(1999)Petrological data provide a new approach to an evaluation of the depth–age problem for ancient seafloor. The correlations among basalt chemical composition, axial depth and mantle temperature at current ocean ridges allow ...
Now showing items 1-20 of 163