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Now showing items 61-80 of 241
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GEODYNAMIC EVOLUTION OF THE EUROPEAN VARISCAN FOLD BELT: PALAEOMAGNETIC AND GEOLOGICAL CONSTRAINTS (1997)The Variscan fold belt of Europe resulted from the collision of Africa, Baltica, Laurentia and the intervening microplates in early Paleozoic times. Over the past few years, many geological, palaeobiogeographic and ...
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(1997)Geological heritage, as part of natural heritage, includes the in situ located geological reference objects (sites) visualising geological phenomena with high information potential. Forty objects of geological heritage of ...
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(2001)Geology and gold mineralisation of the Sutara and Priamurye auriferous districts in the Jewish Autonomous Region are briefly reviewed in the paper. Placers have being mined for more than a hundred years in these districts ...
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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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(1989)That pre-Paleozoic volcanic rocks occur widely in the Polar Urals has been known for a long time. High-magnesium andesites and boninites of the Polar Urals resemble in their geological position, as well as their petrography ...
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(Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения Российской академии наук, 2017)
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(1990)Although olivine is commonly formed in metamorphic and metasomatic processes, cases of its crystallization from hydrothermal solutions are extremely rare. In these cases the hydrothermal nature of the olivine is inferred ...
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(1999)Data are presented on the Kurga polyphase intrusion, which is located within the Kola alkaline province in the northeastern Baltic Shield. The rock assemblages composing the intrusion are demonstrated to be unique to the ...
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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 ...
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(2002)The Ural mountains preserve a late Palaeozoic collision that forms a 2500 km suture in the world's largest landmass, Eurasia. Several features of the mountain belt, in particular a well-preserved crustal root, are ...
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(1990)The isotopic makeup of carbon in marine carbonates exhibits quasiperiodic variations in time. Since these changes were controlled by the global balance of organic and carbonate carbon in the oceans, reliably dated isotope ...
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(2001)Over 18,000 joint orientations were measured from a spectrum of lithologies of various ages at natural exposures in the Central Kyzyl Kum region. For each exposure, we plotted joint orientation diagrams and identified local ...
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(2001)The paper is devoted to the karst role in the formation of aureoles of kimberlite indicator minerals (KIM) and diamond placers in the modern alluvium of the Muna-Markha interfluve. Its territory is open, i.e., the Lower ...
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(2001)Сделана попытка количественно оценить химический состав и объемы мантии, активизация которой привела к формированию в палеозое в северо-восточной части Балтийского щита Кольской щелочной провинции. В отличие от известных ...
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(2004)The present kinematic and dynamic analysis of large-scale strike-slip faults, which enabled the formation of a collage of Altai terranes as a result of two collisional events. The Late Devonian–Early Carboniferous collision ...
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(1999)Stratigraphic and facies distribution of radiolarians within the interval from the Gzhelian Stage of the Upper Carboniferous to the Kungurian Stage of the Lower Permian in the Cis-Ural foredeep are considered. The interrelation ...
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(2015)The Jiamusi massif is a major tectonic unit in the eastern part of NE China and composed chiefly of the Early Paleozoic (about 500 Ma) metamorphosed crystalline basement containing Precambrian, even Archean crust and three ...
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LITHOSTRATIGRAPHIC CHARACTERISTIC AND LITHOLOGY OF TRIASSIC-PALEOZOIC ROCKS OF SOUTHERN MANGYSHLAK (2004)The paper considers principles of the subdivision and correlation and a new petrographic model of Triassic–Paleozoic rocks based on their lithogenetic features. The structure of the folded basement and quasi-platform complex ...
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(2002)Lower Paleozoic platform carbonate strata in northern Alaska (parts of the Arc-tic Alaska, York, and Seward terranes; herein called the North Alaska carbonate plat-form) and central Alaska (Farewell terrane) share distinctive ...
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(2003)The Middle Paleozoic Maksyutov Complex is an important component of the Eurasian collisional orogeny. It consists of dominant mica-rich garnet schist and mica-poor quartzofeldspathic gneiss enclosing minor mafic eclogite ...
Now showing items 61-80 of 241