Environmental changes of the Okhotsk-Kolyma divide from glacial lake sediments during the HoloceneRussian Journal of Pacific Geology - Tập 8 - Trang 464-474 - 2014
P. M. Anderson, A. V. Lozhkin, P. S. Minuyk, A. Yu. Pakhomov
Investigations of glacial lake sediments located near the modern altitudinal boundary of a larch forest (between 750–810 m absolute elevation) reveal continuous records of the vegetation and climate changes over the last 12000 years in the area of the Okhotsk-Kolyma divide. For the first time, the pollen accumulation rates (PAR), which are suggestive of pollen productivity, were used as a key indi...... hiện toàn bộ
Stress state of the Earth’s crust of the Kuril Islands and Kamchatka before the Simushir earthquakeRussian Journal of Pacific Geology - - 2009
Yu. L. Rebetsky
The field of modern tectonic stresses was reconstructed for the Earth’s crust of the northwestern segment of the Pacific subduction zones. For this purpose, we used the method of cataclastic analysis and data on the magnitude of the stresses released at the source of the Simushir earthquake of 2006, which allowed us to determine both the orientation of the principal stress axes and the magnitude o...... hiện toàn bộ
Apatite–Albite Metasomatites (Aceites) of the Eastern Aldan–Stanovoy ShieldRussian Journal of Pacific Geology - Tập 15 - Trang 441-455 - 2021
V. E. Kirillov
This paper summarizes the findings of research on Riphean ore-bearing apatite–albite metasomatites (aceites) identified in metamorphic, volcanic and intrusive rocks in the eastern Aldan–Stanovoy Shield. The characteristic features of lithological and structural control of aceites, their mineral and petrochemical composition, geochemical associations, ontogeny, metasomatic zoning, and geochemical s...... hiện toàn bộ
Gas content of bottom sediments and geochemical indicators of oil and gas on the shelf of the East Siberian SeaRussian Journal of Pacific Geology - Tập 11 - Trang 308-314 - 2017
A. I. Gresov, A. I. Obzhirov, A. V. Yatsuk, A. K. Mazurov, A. S. Ruban
The work reports on the results of geochemical studies of the bottom sediments on the shelf of the East Siberian Sea. The sediments’ gas content, gas composition, and gas geochemical and isotopic characteristics are determined. Abnormal zones of distribution of methane, hydrocarbon gases, and carbon dioxide are revealed within the studied areas, along with the general geological factors affecting ...... hiện toàn bộ
Boron-polymetallic metallogeny of the north and northeast of the Sino-Korean CratonRussian Journal of Pacific Geology - Tập 8 - Trang 379-389 - 2014
V. V. Ratkin, V. I. Gvozdev, O. A. Karas’
Based on published data and original investigations, it has been shown that the combination of widely known Ag, Fe, and Fe-Mn ore deposits, as well as boron and Pb-Zn world-class deposits, is typical for metallogenic zones in the north and northeast of the Sino-Korean Craton. The ore genesis was spatially inherited and lasted from the Archean to Mesozoic. The Archean metallogenic zones are related...... hiện toàn bộ
The Structural Position and the Petrogeochemical and Petropaleomagnetic Characteristics of Volcanic Rocks from the Nilan Terrane (the Junction Zone between the Mongol-Okhotsk and Sikhote-Alin Orogens) and Geodynamic ConclusionsRussian Journal of Pacific Geology - Tập 17 - Trang 401-418 - 2023
A. Yu. Peskov, I. P. Voinova, A. N. Didenko, S. V. Zyabrev, A. V. Kudymov, A. S. Karetnikov, M. V. Arkhipov
The results of structural, petrogeochemical, petro- and paleomagnetic studies of Mesozoic rocks from the Nilan terrane, which from the north adjoin the Paleozoic rocks of the Paukan block (52.0° N, 135.6° E), are presented. Jurassic and Triassic (?) complexly dislocated deposits of terrane are found to be fragments of the Middle–Late Jurassic accretionary complex with different concentration of ol...... hiện toàn bộ
Particle-Size Analysis of Modern Bottom Sediments by the Laser Diffraction and Sieve MethodsRussian Journal of Pacific Geology - Tập 14 - Trang 378-386 - 2020
V. M. Shulkin, A. Yu. Strukov
A combination of laser diffraction and wet sieving through a nylon screen with a 0.1-mm mesh has been suggested for the particle-size analysis of silty bottom sediments from estuarine and coastal sea areas. The necessity of individual determination of sand fractions even in case of the technical ability of the device to analyze the content of coarse particles to 2 mm in size is shown. This is rela...... hiện toàn bộ