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51.
N. P. Laverov L. I. Lobkovsky M. V. Kononov N. L. Dobretsov V. A. Vernikovsky S. D. Sokolov E. V. Shipilov 《Geotectonics》2013,47(1):1-30
The tectonic evolution of the Arctic Region in the Mesozoic and Cenozoic is considered with allowance for the Paleozoic stage of evolution of the ancient Arctida continent. A new geodynamic model of the evolution of the Arctic is based on the idea of the development of upper mantle convection beneath the continent caused by subduction of the Pacific lithosphere under the Eurasian and North American lithospheric plates. The structure of the Amerasia and Eurasia basins of the Arctic is shown to have formed progressively due to destruction of the ancient Arctida continent, a retained fragment of which comprises the structural units of the central segment of the Arctic Ocean, including the Lomonosov Ridge, the Alpha-Mendeleev Rise, and the Podvodnikov and Makarov basins. The proposed model is considered to be a scientific substantiation of the updated Russian territorial claim to the UN Commission on the determination of the Limits of the Continental Shelf in the Arctic Region. 相似文献
52.
Results of interpretation of the seismic refraction survey in the southern part of the Deryugin Basin are presented. A geological-geophysical model was developed, and a scheme of the sedimentary cover evolution of the basin (Late Cretaceous-Pleistocene) is suggested. The data obtained indicate a high hydrocarbon potential comparable with that of the adjacent oil and gas-bearing shelf of northeastern Sakhalin. 相似文献
53.
Geology of Ore Deposits - Slepaya Zalezh’, the largest orebody of the Tyrnyauz Mo–W deposit, is considered a first-priority object should mining operations at the deposit be resumed.... 相似文献
54.
E. V. Verzhbitskii M. V. Kononov A. F. Byakov O. V. Grinberg 《Izvestiya Physics of the Solid Earth》2010,46(10):872-882
Maps of the main structures and the degree of geothermal studies of the Azores-Gibraltar and Iceland regions are constructed.
Computer modeling of the coefficient of velocity of thermal subsidence into the asthenosphere of the Azores segment of the
Mid-Atlantic Ridge is performed. According to the results of modeling, this velocity exceeds the mean velocity of thermal
subsidence of the mid-ocean ridges of the world ocean by a factor of ∼ 1.5. The high velocity of subsidence of the Azores
segment of the ridge is caused by the influence of the hot substance of the plume on the process of subsidence. The distributions
of the heat flow in the Horseshoe basin, Alboran Sea, and southern part of the Iberian Peninsula are analyzed. A zone of increased
heat flow and seismicity, extending from the Madeira-Torre Ridge through the Horseshoe basin, and farther to the east through
the southern parts of Spain and France, is identified for the first time. The identified geothermal zone marks the northern
branch of the diffuse boundary between the Eurasian and African plates. In the region of the Alpine chain, this zone joins
the southern boundary between the Eurasian and African plates, which runs along the northern part of Africa and the Apennine
Peninsula. The European and African plate boundaries outline the identified Western-Mediterranean plate, which mainly consists
of the oceanic and thinned continental lithospheres of the Algerian-Provence and Tyrrhenian basins. 相似文献
55.
A. A. Velichko O. K. Borisova Yu. M. Kononov E. A. Konstantinov R. N. Kurbanov T. D. Morozova P. G. Panin V. V. Semenov A. S. Tesakov S. N. Timireva V. V. Titov P. D. Frolov 《Doklady Earth Sciences》2017,475(2):895-899
An integrated study of the loess–soil sequence in the coastal exposure near the settlement of Beglitsa (Rostov oblast) allowed us, for the first time, to reconstruct the landscape-climatic changes that occurred in the eastern Azov region over the course of the Late Pleistocene. In the south of the periglacial zone, considerable differences between intensity of the loess accumulation in the Early and Late Valdai Cryochrons were revealed. In the Early Valdai Epoch, which corresponds roughly to the end of Marine Isotope Stage (MIS) 5 and MIS 4, loess accumulation occurred after completion of development of the Mezin pedocomplex and before the beginning of the Bryansk stage of soil development, i.e., over more than 20 000 years. In the much shorter Late Valdai Cryochron MIS 2 (10 000–12 000 years), loess accumulation reached 5 m. The data evaluation shows that the loess accumulation rates in the Early Valdai Epoch (~0.07 mm/year) and the Late Valdai Epoch (~0.5 mm/year) differ from each other by an order of magnitude. 相似文献
56.
Lobkovskiy L. I. Sokolov S. D. Sorokhtin N. O. Kononov M. V. 《Doklady Earth Sciences》2021,500(2):809-815
Doklady Earth Sciences - The popular rotational hypothesis of the formation and evolution of the main structures of the Eastern Arctic lithosphere during the Late Jurassic–Early Cretaceous,... 相似文献
57.
A study based on computation of D-function anomalies (method of joint gravity and magnetic data analysis) along profiles in the Bering Sea has been performed in both the Aleutian Basin with oceanic crust and the Bering continental shelf. This study revealed extended faults that affect not only the Earth’s crust but also the upper mantle. This is supported by seismic profiling. The calculated palinspastic reconstructions of the position of North America relative to “immobile” Eurasia 80, 52–50, 50–47, and 15–20 Ma ago allowed us to show that the revealed strike-slip faults are probable relics of an echeloned transform boundary between the Eurasian and North American lithospheric plates. The formation of this boundary beginning from the Late Cretaceous was apparently related to opening of the North Atalantic, which determined the large rate of displacement of North America relative to Eurasia. 相似文献