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Now showing items 21-40 of 392
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(2001)The main deformation stages of Mesozoic-Cenozoic deposits in the Crimean Peninsula were identified on the basis of structural-paragenetic and kinematic analyses of cracks and glide planes. The Late-Jurassic age of the ...
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(1989)The mantle is a very complex physicochemical system, and one is forced to use simplified models to analyze the convection in it. We investigate a mathematical model of convection in a compressible mixture consisting of two ...
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(2002)Periods of relatively uniform plate motion were interrupted several times throughout the Cenozoic and Mesozoic by rapid plate reorganization events [R. Hey, Geol. Soc. Am. Bull. 88 (1977) 1404-1420; P.A. Rona, E.S. Richardson, ...
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(2001)Paleomagnetic pole positions have long been calculated with the assumption that the ancient geomagnetic field was purely that of a geocentric dipole, but in recent years it has become a concern that this assumption is not ...
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FEELING THE COLD: ATMOSPHERIC CO2 ENRICHMENT AND THE FROST SENSITIVITY OF TERRESTRIAL PLANT FOLIAGE (2002)Quantitative palaeoclimate reconstructions from plant fossils using the nearest living relative (NLR) approach axiomatically assume that the climatic limits of plant distributions have largely remained unchanged over at ...
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(1990)Pectolite NaHCa2[Si3O9] has been known since the early 19th century. It is found in igneous rocks, in various parts of the world, including basalts, dolerites, and largely in alkalic rocks. We found pectolite in manganese ...
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(2001)Material of the genus Oswaldheeria (Miroviaceae, Pinopsida) from the Mesozoic of Russia is presented for the first time. A new species, Oswaldheeria orientalis, is described, and a new combination, Oswaldheeria neosibirica, ...
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(2001)The suborder Paratrichoptera (Mecoptera) is discarded as polyphyletic. The family Choristopsychidae Mart. is synonymized under Permochoristidae Till. The generic composition of the family Mesopsychidae Till. is revised. ...
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(2002)Results derived from gamma-ray spectrometry studies of volcanic rocks in a depth interval of 3540-8150 m are presented. The rocks are shown to have low concentrations of radioactive elements, which is consistent with the ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2017)
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(1990)The deposition of apatite in the past was preceded and promoted by numerous factors, chief among which were tectonic factors (endogenous conditions) and igneous and metamorphic factors. Thus, on tectonically stable structures, ...
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(2004)A subject of discussion is age of rocks in Mesozoic volcano-plutonic belts of the epi-Paleozoic Amurian superterrane. Mesozoic volcanic and intrusive complexes of the northeastern Greater Khingan and western Umlekan-Ogodzha ...
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(1993)Part 1 Foundations of a Contary View: Paradox and puzzles. Radioactivity of continental crust. Radioactivity of upper mantle. The heat flow paradox. Sub-continent upwelling and heat transfer. Seismic and petrographic ...
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(1989)Petrologic and geochemical study of the products of deep-seated metasomatism helps to bring out inhomogeneities in the composition of the lithosphere that could be related to the redistribution and subsequent mobilization ...
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(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 ...
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(1999)The paper gives the definition of the North-Asian craton as a geological structure. The evolution of conception and views of its structure and boundaries is considered, and a brief overview of its geologic history in terms ...
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(2002)Hopanoic acids were found in all but the two most mature of a suite of 30 Triassic to Cretaceous sedimentary rocks. Their carbon number distributions generally maximise at C32, consistent with hopanoic acids found in modern ...
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(2003)The east margin of the Siberian craton is a typical passive margin with a thick succession of sedimentary rocks ranging in age from Mesoproterozoic to Tertiary. Several zones with distinct structural styles are recognized ...
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INFORMATIVENESS OF CLASSIFICATION CRITERIA FOR NASSELLARIA (RADIOLARIA): THE FAMILY LAMPROCYCLIDAE (2001)It is known that many morphological types of radiolarians from the World Ocean remained stable from the Mesozoic to the Present. Radiolarians whose skeletons consist of three parts are an example of such a stable morphotype ...
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(2001)Significant investigators and aspects in the past century of insect paleontology are briefly reviewed. Despite the pervasive influence of the paleoentomologist Willi Hennig in systematic biology, the study of fossil insects ...
Now showing items 21-40 of 392