LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT)
Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural and petrologic data, the following paper provides a detailed description of the characteristics of the Late Paleozoic basic and granitoid magmatism in the eastern part of the Kaakhem magmatic area (Eastern...
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2022-09-01
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| Series: | Геодинамика и тектонофизика |
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| Online Access: | https://www.gt-crust.ru/jour/article/view/1530 |
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| author | I. V. Karmysheva V. A. Yakovlev A. M. Sugorakova S. N. Rudnev D. V. Semenova |
| author_facet | I. V. Karmysheva V. A. Yakovlev A. M. Sugorakova S. N. Rudnev D. V. Semenova |
| author_sort | I. V. Karmysheva |
| collection | DOAJ |
| description | Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural and petrologic data, the following paper provides a detailed description of the characteristics of the Late Paleozoic basic and granitoid magmatism in the eastern part of the Kaakhem magmatic area (Eastern Tuva). During the formation of the Shivey alkaline-granitoid and Chadal gabbroid massifs in the period of 292–283 Ma, there were revealed two stages of contrasting magmatism. The early stage is characterized by the formation of plutonic mingling structures and intermediate rocks. Deformation structures, widespread in the early-mingling rocks, are superimposed and formed in extensional regime. At a later stage, there occurred a sequential intrusion of salic and mafic magmas into the zones of local extension in the early-mingling host rocks. A similar petrogeochemical composition of basic rocks of the early and late mingling indicates that they all formed from enriched magma. Granosyenites and granites are derived from melting of tonalities and metasedimentary rocks with a significant contribution of the mantle component. The simultaneous formation of the Chadal gabbroid and Shivei granitoid massifs took place at the intraplate stage of the development of geological structures of Eastern Tuva in the Late Paleozoic. |
| format | Article |
| id | doaj-art-142ea57d082948cf8572fd2a6e0515da |
| institution | Kabale University |
| issn | 2078-502X |
| language | English |
| publishDate | 2022-09-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-142ea57d082948cf8572fd2a6e0515da2025-08-20T03:37:06ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2022-09-0113310.5800/GT-2022-13-3-0637636LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT)I. V. Karmysheva0V. A. Yakovlev1A. M. Sugorakova2S. N. Rudnev3D. V. Semenova4Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesTuvinian Institute for Exploration of Natural Resources, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesBased on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural and petrologic data, the following paper provides a detailed description of the characteristics of the Late Paleozoic basic and granitoid magmatism in the eastern part of the Kaakhem magmatic area (Eastern Tuva). During the formation of the Shivey alkaline-granitoid and Chadal gabbroid massifs in the period of 292–283 Ma, there were revealed two stages of contrasting magmatism. The early stage is characterized by the formation of plutonic mingling structures and intermediate rocks. Deformation structures, widespread in the early-mingling rocks, are superimposed and formed in extensional regime. At a later stage, there occurred a sequential intrusion of salic and mafic magmas into the zones of local extension in the early-mingling host rocks. A similar petrogeochemical composition of basic rocks of the early and late mingling indicates that they all formed from enriched magma. Granosyenites and granites are derived from melting of tonalities and metasedimentary rocks with a significant contribution of the mantle component. The simultaneous formation of the Chadal gabbroid and Shivei granitoid massifs took place at the intraplate stage of the development of geological structures of Eastern Tuva in the Late Paleozoic.https://www.gt-crust.ru/jour/article/view/1530early permian magmatismgabbro-granite magmatismminglingu-pb methodkaakhem batolith |
| spellingShingle | I. V. Karmysheva V. A. Yakovlev A. M. Sugorakova S. N. Rudnev D. V. Semenova LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) Геодинамика и тектонофизика early permian magmatism gabbro-granite magmatism mingling u-pb method kaakhem batolith |
| title | LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) |
| title_full | LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) |
| title_fullStr | LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) |
| title_full_unstemmed | LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) |
| title_short | LATE PALEOZOIC CONTRASTING MAGMATISM OF THE EASTERN KAAKHEM MAGMATIC AREA (CENTRAL ASIAN OROGENIC BELT) |
| title_sort | late paleozoic contrasting magmatism of the eastern kaakhem magmatic area central asian orogenic belt |
| topic | early permian magmatism gabbro-granite magmatism mingling u-pb method kaakhem batolith |
| url | https://www.gt-crust.ru/jour/article/view/1530 |
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