16 Result(s)
within
Academician K. E. Degtyarev
-
Article
Stages of Granitoid Magmatism in the Eastern Part of the Kazakhstan Composite Continent in the Early–Middle Paleozoic
For the northeastern part of the Chingiz–Tarbagatai segment of the Boshchekul–Chingiz folded area, U‒Pb age estimates of Middle Paleozoic granitoid complexes were obtained for the first time and their geochemi...
-
Article
The Oldest Island-Arc Granitoids of the Chingiz–Tarbagatai Region, Eastern Kazakhstan: Substantiation of the Age and Peculiarities of Composition
The oldest granitoids of the Kan–Chingiz Complex with quartz diorites, granodiorites, plagiogranites, and granites are dated for the first time in the Chingiz–Tarbagatai region of eastern Kazakhstan. The U‒Pb ...
-
Article
Open AccessErratum to: The First Discovery of Authigenic Carbonates on the Laptev Sea Flank of Gakkel Ridge (Arctic Ocean)
An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X23070395
-
Article
Open AccessErratum to: The First Discovery of Cambrian Volcanic Rocks and Plagiogranites in the Tekturmas Ophiolite Zone (Central Kazakhstan): Age and Composition
An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X23060107
-
Article
Open AccessThe First Discovery of Cambrian Volcanic Rocks and Plagiogranites in the Tekturmas Ophiolite Zone (Central Kazakhstan): Age and Composition
The complex of felsic to intermediate volcanic rocks intruded by plagiogranitic bodies is first revealed in the western part of the Tekturmas ophiolite zone of Central Kazakhstan. The U–Pb (SIMS) geochronologi...
-
Article
Open AccessThe First Discovery of Authigenic Carbonates on the Laptev Sea Flank of Gakkel Ridge (Arctic Ocean)
This paper describes the first finding of authigenic carbonates on the southern flank of Gakkel Ridge in its junction with the continental margin of the Laptev Sea of the Russian Federation. The samples are re...
-
Article
The Mesoproterozoic Bimodal Magmatism of the Ulutau Terrane, Central Kazakhstan
The complex of volcanogenic rocks of the basalt–rhyolite composition of the Zhiide series has been studied in the southern part of the Ulutau Terrane in Central Kazakhstan. The age of rhyolites (1338 ± 5 Ma) w...
-
Article
The Lower Ordovician Island-Arc Complex of Northern Kazakhstan: Substantiation of Age and Features of Composition
A complex of schistose volcanogenic and tuffaceous rocks of basalt–rhyolite composition, distinguished as the Dautskaya Formation in the northernmost part of the Shat Zone of Northern Kazakhstan, was studied. ...
-
Article
Composition and Sources of Silurian Terrigenous Rocks at the Periphery of the Tekturmas Ophiolite Zone (Central Kazakhstan)
The paper presents new petrographic and geochemical data from terrigenous rocks and first U–Pb ages of detrital zircons from sandstones of the Tekturmas zone of Junggar-Balkhash suture zone (central Kazakhstan...
-
Article
Neoproterozoic Age of the Iron Ore Volcanogenic–Sedimentary Series of the Ulutau Terrane (Central Kazakhstan)
The metamorphosed iron ore volcanogenic–sedimentary strata of the Karsakpai series in the eastern Ulutau Precambrian terrane of Central Kazakhstan are studied. The crystallization age of 745 ± 3 Ma is first da...
-
Article
First Results of U–Th–Pb (SIMS) Geochronological Study of Zircon from Serpentinized Ultramafic Rocks of the Tekturmas Ophiolite Zone (Central Kazakhstan)
Accessory zircon extracted from serpentinized dunite and harzburgite of the Tekturmas Zone of Central Kazakhstan, which is one of the largest ophiolite zones in the western part of the Central Asian Belt, has ...
-
Article
Early Neoproterozoic (~920 Ma) Granite–Gneiss of the Junggar Alataw, South Kazakhstan: Age Substantiation Based on the Results of U–Th–Pb (SIMS) Dating
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, which is one of the oldest complexes in the Junggar Alataw Ran...
-
Article
The Late Neoproterozoic Age of Differentiated Volcanic Complexes of the Ulutau Massif: Results of U–Th–Pb (SIMS) Dating
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 U–Th–Pb (SIMS) crystallization age of...
-
Article
Paleozoic Age of Metaterrigenous Sequences of the Maksyutov Metamorphic Complex (Southern Urals): Results of U–Pb Dating of Detrital Zircons
The first U–Pb (LA–ICP–MS) isotope dating of detrital zircons from quartzites of two strata of the Maksyutov metamorphic complex (Southern Urals) was performed. Zircon grains from the Galeevo quartzites are we...
-
Article
Early Ordovician Age of Suprasubduction Ophiolites in the Northeastern Part of Central Kazakhstan: U–Th–Pb (SIMS) Dating of Plagiogranites
Suprasubduction zone ophiolites in the Bayanaul and Maikain–Kyzyltas zones in the northeastern part of Central Kazakhstan were studied. U–Pb dating of plagiogranites that constitute the plutonic complexes of t...
-
Article
Age and Structure of a Fragment of the Early Cambrian Ophiolite Sequence (North Balkhash Zone, Central Kazakhstan)
A fragment of the ophiolite sequence composed of dunites, wherlites, pyroxenites, gabbro, gabbro-dolerites, and plagiogranites was described within the structure of the North Balkhash Zone of Paleozoides of Ce...
