Neoproterozoic Age of the Iron Ore Volcanogenic–Sedimentary Series of the Ulutau Terrane (Central Kazakhstan)     

Tretyakov  A. A.  Degtyarev  K. E.  Danukalov  N. K.  Kanygina  N. A. 《Doklady Earth Sciences》2022,502(1-2):1-6

Doklady Earth Sciences - The metamorphosed iron ore volcanogenic–sedimentary strata of the Karsakpai series in the eastern Ulutau Precambrian terrane of Central Kazakhstan are studied. The...  相似文献   

Paleoproterozoic Age of Gneiss-Granites of the Mamskaya Zone (Baikal–Patom Belt): Geological Implications     

Rytsk  E. Yu.  Andreev  A. A.  Tolmacheva  E. V.  Kuznetsov  A. B.  Velikoslavinsky  S. D.  Fedoseenko  A. M. 《Doklady Earth Sciences》2021,498(1):367-371

Doklady Earth Sciences - This article presents the results of U–Pb geochronological study of gneiss-granites of the Mamskaya zone. The age estimate of 1874 ± 9 Ma (SIMS method) obtained...  相似文献   

The Age of Nb Rare-Metal Mineralization of the Ilmeny–Vishnevogorsky Alkaline Complex (South Urals)     

Belyatsky  B. V.  Lepekhina  E. N.  Antonov  A. V.  Rodionov  N. V.  Nedosekova  I. L.  Petrov  O. V.  Shevchenko  S. S.  Sergeev  S. A. 《Doklady Earth Sciences》2018,481(2):1079-1085

Doklady Earth Sciences - The results of local U–Th–Pb-SIMS-SHRIMP-II analysis of the collection of pyrochlores from Nb rare-metal deposits of the Ilmeny–Vishnevogorsky alkaline...  相似文献   

Age and Boundaries of the Olekma Magmatic Belt of the Selenga–Stanovoi Superterrane (Central Asian Mobile Belt)     

V.?P.?KovachEmail author  A.?B.?Kotov  A.?M.?Larin  E.?B.?Sal’nikova  S.?D.?Velikoslavinskii  S.?Z.?Yakovleva  Yu.?V.?Plotkina 《Doklady Earth Sciences》2018,483(1):1375-1379

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U–Pb Isotope Age of Zircon (LA–ICP–MS Method) from Magmatic Rocks and Some Aspects of the Genesis of the Tyrnyauz Mo–W Deposit (North Caucasus)     

Soloviev  S. G.  Kryazhev  S. G.  Semenova  D. V.  Kalinin  Yu. A.  Kryazhev  V. S.  Emkuzhev  M. S.  Bortnikov  N. S. 《Geology of Ore Deposits》2021,63(5):409-430

Geology of Ore Deposits - The authors' determinations of the U–Pb isotopic age of zircon (LA–ICP–MS method) in the main types of igneous rocks emphasize the presence of both...  相似文献   

Early Permian Age of Nepheline Syenites of the Korgere–Daba Massif (Sangilen Highlands,Tuva)     

Nikiforov  A. V.  Salnikova  E. B.  Yarmolyuk  V. V.  Kotov  A. B.  Sugorakova  A. M.  Anisimova  I. V. 《Doklady Earth Sciences》2019,485(1):235-237

Doklady Earth Sciences - This paper reports on geochronological U–Pb studies of baddeleyite from nepheline syenite of the Korgere-Daba alkaline massif, which is the largest massif within the...  相似文献   

Rb–Sr Age of Riphean Glauconites of the Kamo Group (Baikit Anteclise,Siberian Craton)     

Zaitseva  T. S.  Kuznetsov  A. B.  Ivanova  N. A.  Maslennikov  M. A.  Pustylnikova  V. V.  Turchenko  T. L.  Nagovitsin  K. E. 《Doklady Earth Sciences》2019,488(1):1013-1017

Doklady Earth Sciences - A mineralogical-geochemical study of globular phyllosilicates (GPS) of the glauconite-illite series of the Dolgokta Formation from the stratigraphic well Chunkinskaya Well...  相似文献   

Early Quaternary Age of the Final Stage of Volcanism in the Central Part of the Sredinny Range of Kamchatka (K–Ar Data)     

Pevzner  M. M.  Lebedev  V. A.  Kuscheva  Yu. V.  Volynets  A. O.  Tolstykh  M. L.  Babansky  A. D. 《Doklady Earth Sciences》2020,490(1):1-3

Doklady Earth Sciences - A first set of K–Ar isotopic ages obtained, which allowed to estimate the age of the largest volcanoes of the Anaunsky Dol (3.2, 2.2 and 1.9 Ma) and eruptive centers...  相似文献   

The Late Silurian Age of the Reference Aralaul Granosyenites–Granite Massif (Northern Kazakhstan)     

K. E. Degtyarev  A. A. Tretyakov  A. B. Kotov  E. B. Salnikova  M. V. Luchitskaya  V. P. Kovach  K.-L. Wang 《Doklady Earth Sciences》2018,479(1):275-278

This work presents the results of U–Pb geochronological studies of alkaline granites of the Aralaul complex of Northern Kazakhstan, which allow one to substantiate their Late Silurian (420 ± 4 Ma) age. Taking into consideration the previously obtained data, we propose a new development scheme of Paleozoic granitoid magmatism in Northern Kazakhstan, which includes Late Ordovician granite–granodiorite (Zerenda and Krykkuduk), Early Silurian granite–leucogranite (Borovoe and Karabulak), Late Silurian granosyenites–granite (Aralaul), and Early Devonian (Balkashino and Orlinogorsk) complexes.  相似文献   

Middle Devonian Age of Metamorphism of Garnet Amphibolite at the Sole of the Kempirsai Ophiolite Allochthon (Southern Urals): Results of U–Th–Pb (SIMS) Dating     

Ryazantsev  A. V.  Skoblenko  A. V.  Golionko  B. G.  Artyomova  O. A. 《Doklady Earth Sciences》2021,501(2):1009-1014

Doklady Earth Sciences - Metagabbroid garnet amphibolite formed after high-pressure granulite with an estimated P–T peak of 12–16 kbar at 700–790°C occurs at the sole of the...  相似文献   

U–Pb Age and Geochemical Characteristics of Ultramafic–Mafic Rocks of the Dzhida Zone Ophiolite Association (Southwestern Transbaikalia)     

A. L. Elbaev  I. V. Gordienko  T. B. Bayanova  D. V. Gorokhovskiy  D. A. Orsoev  R. A. Badmatsyrenova  O. V. Zarubina 《Doklady Earth Sciences》2018,478(2):208-210

This article presents new geochronological and isotope-geochemical data on ultramafic–mafic rocks of the banded complex of the Dzhida zone of the Caledonides ophiolite association.  相似文献   

Age of granitoids in the Pripechora fault zone of the basement of Pechora Basin: First U–Pb (SIMS) data     

V. L. Andreichev  A. A. Soboleva  E. G. Dovzhikova  E. L. Miller  M. A. Coble  A. N. Larionov  O. V. Vakulenko  S. A. Sergeev 《Doklady Earth Sciences》2017,474(1):498-502

Upper Precambrian basement of the Pechora Basin that is located between the Urals and Timan and is a part of the Pechora plate lies beneath 1–7 km of Ordovician-Cenozoic sediment cover. On the base of geophysical data and drilling the basement of the Pechora plate is subdivided into the Timan crustal block and the Bolshezemel crustal block which differ by composition and the character of magmatism. The boundary between the crustal blocks is a system of deep faults called the Pripechora and Ilych-Chikshino faults that strike in a northwestern direction, extending from the Urals to the Pechora Sea. Granitoids of Charkayu complex which were penetrated by several deep boreholes in Pripechora fault zone are interpreted as suprasubduction (island arc and collision) magmas associated with the Timan orogeny. First U–Pb dating (SIMS, using SHRIMP-II and SHRIMP-RG) of zircons from granitoids indicate that granitoid magmatism which accompanied the final stages of the Timanide orogeny occurred in the Late Vendian about 555–544 Ma. The age of zircons from granites of the 1-Charkayu borehole is 544 ± 6 Ma, from granites of 1-East Charkayu borehole is 545 ± 5 Ma, and from granodiorites of 1-South Charkayu borehole is 555 ± 2 Ma.  相似文献   

The Late Neoproterozoic Age of Differentiated Volcanic Complexes of the Ulutau Massif: Results of U–Th–Pb (SIMS) Dating     

Tretyakov  A. A.  Degtyarev  K. E.  Kanygina  N. A.  Danukalov  N. K. 《Doklady Earth Sciences》2020,494(1):670-674

Doklady Earth Sciences - The metamorphosed differentiated volcanogenic strata of the Aralbai Group have been studied in the eastern part of the Precambrian Ulutau massif of Central Kazakhstan. The...  相似文献   

Paleoproterozoic Age (2055–2050 Ma) of Volcanogenic–Terrigenous Rocks from the Bilyakchan Zone of the Siberian Platform and Okhotsk Massif Junction     

Kuzmin  V. K.  Bogomolov  E. S.  Kuznetsov  A. B. 《Doklady Earth Sciences》2020,492(2):393-397

Doklady Earth Sciences - The age of the Bilyakchan Group, representing the northern fragment of the Ulkan–Bilyakchan volcano-plutonic belt of the Okhotsk Massif and Siberian platform junction...  相似文献   

The U–Pb LA-SF-ICP-MS Age of Zircon from Metaplagiogranite of the Kharbei Metamorphic Complex (Polar Urals)     

Ulyasheva  N. S.  Khubanov  V. B. 《Doklady Earth Sciences》2022,504(1):276-282

Doklady Earth Sciences - For timing of endogenous events in the Kharbei metamorphic complex (Polar Urals), U–Pb isotopic dating of zircons from garnet–clinozoisite–twomica...  相似文献   

First Determination of the Isotope Age of the Andesite–Dacite Complex of the Eastern Zone of the Middle Urals     

Koroteev  V. A.  Chervyakovskiy  V. S.  Zaitseva  M. V.  Volchek  E. N.  Necheukhin  V. M. 《Doklady Earth Sciences》2019,487(1):756-760

Doklady Earth Sciences - This paper reports on the first U–Pb dating of zircons from dacites of the volcanic paleo-edifice of the andesite–dacite complex of the Eastern Zone of the...  相似文献   

The Upper Age Boundary of the Formation of the Olondo Fragment of the Tokko–Khani Greenstone Belt,Aldan Shield: U–Pb (ID-TIMS) Geochronological Data     

Kovach  V. P.  Kotov  A. B.  Salnikova  E. B.  Popov  N. V.  Velikoslavinsky  S. D.  Plotkina  J. V.  Wang  K.-L.  Fedoseenko  A. M. 《Doklady Earth Sciences》2020,494(2):767-772

Doklady Earth Sciences - This work presents new U–Pb ID-TIMS geochronological data obtained for the rocks of the metagabbro–diorite–tonalite complex of the Olondo fragment of the...  相似文献   

New Data on the Age of Neoproterozoic Volcanic Rocks of the Isakovka Terrane,Sayan–Yenisei Accretion Belt (U–Pb,Zircon)     

Kozlov  P. S.  Likhanov  I. I.  Ivanov  K. S.  Nozhkin  A. D.  Zinoviev  S. V. 《Doklady Earth Sciences》2019,488(2):1196-1199

Doklady Earth Sciences - A Late Neoproterozoic U–Pb zircon age is established for the first time for arc metadacites (691 ± 8.8 Ma) and basalts (572 ± 6.5 Ma) from the...  相似文献   

U–Pb (SHRIMP) Zircon Age of Granitoid Pebbles from the Kukkarauk Conglomerates of the Vendian Asha Group (Alatau Anticlinorium,Southern Urals)     

Krasnobaev  A. A.  Puchkov  V. N.  Sergeeva  N. D.  Busharina  S. V. 《Doklady Earth Sciences》2019,486(2):687-691

Doklady Earth Sciences - The lack of reliable geochronological data for the Vendian deposits of the Urals and other regions is one reason why there is still uncertainty in the age estimates of the...  相似文献   

Early Neoproterozoic (~920 Ma) Granite–Gneiss of the Junggar Alataw,South Kazakhstan: Age Substantiation Based on the Results of U–Th–Pb (SIMS) Dating     

Alexeiev  D. V.  Degtyarev  K. E.  Tretyakov  A. A.  Kanygina  N. A. 《Doklady Earth Sciences》2021,496(1):13-16

Doklady Earth Sciences - Based on the results of U–Th–Pb (SIMS) dating, an Early Neoproterozoic (924 ± 4 Ma) age was obtained for granite–gneiss of the Sarychabyn Complex,...  相似文献