Stratigraphy and Geological Correlation

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Alluvium: Implications for stratigraphy and correlation of quaternary sediments
Stratigraphy and Geological Correlation - Tập 19 - Trang 450-471 - 2011
N. V. Makarova, V. I. Makarov, G. A. Postolenko, B. E. Akinin
Based on a generalized knowledge of conditions and mechanisms for accumulation of the cycle terrace alluvium on plain and mountain rivers, alluvium is suggested as an instrument for stratigraphic studies, interregional correlation, and correction of present schemes. Diachronous alluvial formations are uniformly constructed. They include two subunits, a lower “warm” and an upper “cool” one. In addi... hiện toàn bộ
The Kantemirovka Paleogene reference section of the Voronezh region
Stratigraphy and Geological Correlation - Tập 24 - Trang 602-624 - 2016
E. M. Bugrova, V. N. Beniamovsky, I. P. Tabachnikova, T. S. Ryabokon’, E. P. Radionova
The section on the outskirts of the town of Kantemirovka is proposed to serve as a reference one for Paleogene deposits of the Voronezh region. Observing the requirements of the current Stratigraphic Code of Russia, it is suggested to introduce the Middle Eocene Sergeevka and Tishki formations, which were defined previously by V.P. Semenov as mappable lithostratigraphic units instead of the Kiev F... hiện toàn bộ
Formation History of the Valanginian Deposits, Southwestern and Central Crimea
Stratigraphy and Geological Correlation - Tập 30 Số 6 - Trang 498-517 - 2022
K. A. Dubkova, С. Б. Шишлов, А. Б. Кузнецов, F. A. Tricolidi
The C, O, and Sr Isotope Chemostratigraphy of the Vendian (Ediacaran)–Cambrian Transition, Olekma River, Western Slope of the Aldan Shield
Stratigraphy and Geological Correlation - Tập 28 - Trang 479-492 - 2020
B. G. Pokrovsky, M. I. Bujakaite, O. L. Petrov, A. A. Kolesnikova
The Upper Neoproterozoic–Lower Cambrian section in the Olekma River basin is divided (from bottom to top) into the Dikimdia, Seralakh, Porokhtakh, and Pestrotsvetnaya formations, which are mainly composed of dolostones with a subordinate amount of sandstone, silty shales, gypsum, anhydrite, and native sulfur. The isotope data available allow one to substantially correct the stratigraphic units of ... hiện toàn bộ
Palynological Profile and Depositional Environment of the Ishim Formation (Upper Miocene) in Tobol–Ishim Interfluve, Western Siberia
Stratigraphy and Geological Correlation - Tập 27 - Trang 707-727 - 2020
O. B. Kuzmina, I. V. Khazina, P. V. Smirnov, A. O. Konstantinov, A. R. Agatova
For the first time, sections of the Upper Miocene Ishim Formation in the south of Tyumen oblast near the villages of Pyatkovo, Masali and Bigila were thoroughly studied by the palynological method. A series of mineralogical analyses of these sediments and radiocarbon analysis of the Quaternary sediments overlying the Ishim Formation were carried out. Four palynological assemblages (PA) were establ... hiện toàn bộ
Representatives of the Neocosmoceras (Neocomitidae, Ammonoidea) genus from the Berriasian of the Crimean Mountains and their stratigraphic significance
Stratigraphy and Geological Correlation - Tập 17 - Trang 415-429 - 2009
V. V. Arkadiev, T. N. Bogdanova
The genus Euthymiceras is considered as the junior synonym of the genus Neocosmoceras. Four species N. euthymi, N. cf. transfigurabilis, N. minutus sp. nov., and N. giganteus sp. nov. from the Berriasian deposits of the Crimean Mountains are described for the first time. The biostratigraphic unit formerly termed the “Euthymiceras-Neocosmoceras Beds” is ranked now as the Neocosmoceras euthymi Subzo... hiện toàn bộ
U-Pb age of granitoids from the Elenovsk Complex (Kokchetav block, Northern Kazakhstan)
Stratigraphy and Geological Correlation - Tập 20 Số 5 - Trang 417-425 - 2012
F. A. Letnikov, А. Б. Котов, A. A. Zayachkovskii, Н. Г. Ризванова, Е. Б. Сальникова, Yu. V. Plotkina
Comparative analysis of marine paleogene sections and biota from West Siberia and the Arctic Region
Stratigraphy and Geological Correlation - Tập 18 - Trang 635-659 - 2010
M. A. Akhmet’ev, N. I. Zaporozhets, A. I. Iakovleva, G. N. Aleksandrova, V. N. Beniamovsky, T. V. Oreshkina, Z. N. Gnibidenko, Zh. A. Dolya
The analysis of the main biospheric events that took place in West Siberia and the Arctic region during the Early Paleogene revealed the paleogeographic and paleobiogeographic unity of marine sedimentation basins and close biogeographic relations between their separate parts. Most biotic and abiotic events of the first half of the Paleogene in the Arctic region and West Siberia were synchronous, u... hiện toàn bộ
Age and Provenance of the Daur Series Sedimentary Rocks (Riphean), Argun Continental Massif: Results of U–Th–Pb and Lu–Hf Isotope Studies of Detrital Zircons
Stratigraphy and Geological Correlation - Tập 29 - Trang 1-7 - 2021
Yu. N. Smirnova, R. O. Ovchinnikov, A. A. Sorokin, Yu. V. Smirnov
The first results of U–Th–Pb and Lu–Hf isotope studies of detrital zircons from sedimentary rocks of the Daur Series (Argun continental massif of the Central Asian Fold Belt) are presented. It is established that the youngest detrital zircons from sandstones of the Urulungui and Dyrbylkei formations of the Daur Series have the ages of 899 and 771 Ma, respectively. These data determine the maximum ... hiện toàn bộ
Rapakivi granites in the geological history of the earth. Part 1, magmatic associations with rapakivi granites: Age, geochemistry, and tectonic setting
Stratigraphy and Geological Correlation - Tập 17 - Trang 235-258 - 2009
A. M. Larin
Rapakivi granites characteristic practically of all old platforms are greatly variable in age and irregularly distributed over the globe. Four types of magmatic associations, which include rapakivi granites, are represented by anorthosite-mangerite-charnockite-rapakivi granite, anorthosite-mangerite-rapakivi-peralkaline granite, gabbro-rapakivi granite-foidite, and rapakivi granite-shoshonite rock... hiện toàn bộ
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