AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT
The article presents new age data on the ‘key’ Early Paleozoic igneous complexes located in the central part of the Bureya continental massif of the Central Asian Fold Belt. Porphyroblastic quartz monzonites of the Kivili complex are dated to 453±2 Ma. The age of gneissic granites of the Sularin com...
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Institute of the Earth's crust, Siberian Branch of RAS
2020-03-01
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doaj-12e8ee8740d747e6abc8e19b289233f32021-07-29T08:39:53ZengInstitute of the Earth's crust, Siberian Branch of RASGeodinamika i Tektonofizika2078-502X2020-03-011118910610.5800/GT-2020-11-1-0465463AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELTR. O. Ovchinnikov0A. A. Sorokin1N. M. Kudryashov2V. P. Kovach3J. V. Plotkina4T. M. Skovitina5Institute of Geology and Nature Management, Far East Branch of RASInstitute of Geology and Nature Management, Far East Branch of RASInstitute of Geology, Kola Scientific Centre of RASInstitute of Precambrian Geology and Geochronology RASInstitute of Precambrian Geology and Geochronology RASInstitute of the Earth’s Crust, Siberian Branch of RASThe article presents new age data on the ‘key’ Early Paleozoic igneous complexes located in the central part of the Bureya continental massif of the Central Asian Fold Belt. Porphyroblastic quartz monzonites of the Kivili complex are dated to 453±2 Ma. The age of gneissic granites of the Sularin complex is ~481 Ma. The Sm-Nd isotope studies show that Late Ordovician quartz monzonites were formed mainly from crustal sources with Paleoproterozoic Nd model isotopic ages. Both ancient (Paleoproterozoic?) and younger sources were involved in the formation of Cambrian granites. Our data, as well as previously published materials, suggest several stages of the Early Paleozoic magmatism in the evolution of the Bureya continental massif: ~541, ~504–500, ~487, ~474 and ~453 Ma. Early Paleozoic magmatism developed under a similar scenario in the Jiamusi continental massif. In addition to the synchronism of Neoproterozoic magmatism within these continental massifs, this feature testifies to their common geological history.https://www.gt-crust.ru/jour/article/view/987bureya continental massifcentral asian fold beltgranitoid magmatismu-pb and u-th-pb geochronologyearly paleozoicsource |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
R. O. Ovchinnikov A. A. Sorokin N. M. Kudryashov V. P. Kovach J. V. Plotkina T. M. Skovitina |
spellingShingle |
R. O. Ovchinnikov A. A. Sorokin N. M. Kudryashov V. P. Kovach J. V. Plotkina T. M. Skovitina AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT Geodinamika i Tektonofizika bureya continental massif central asian fold belt granitoid magmatism u-pb and u-th-pb geochronology early paleozoic source |
author_facet |
R. O. Ovchinnikov A. A. Sorokin N. M. Kudryashov V. P. Kovach J. V. Plotkina T. M. Skovitina |
author_sort |
R. O. Ovchinnikov |
title |
AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT |
title_short |
AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT |
title_full |
AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT |
title_fullStr |
AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT |
title_full_unstemmed |
AGE OF THE EARLY PALEOZOIC GRANITOID MAGMATISMIN THE CENTRAL PART OF THE BUREYA CONTINENTAL MASSIF, CENTRAL ASIAN FOLD BELT |
title_sort |
age of the early paleozoic granitoid magmatismin the central part of the bureya continental massif, central asian fold belt |
publisher |
Institute of the Earth's crust, Siberian Branch of RAS |
series |
Geodinamika i Tektonofizika |
issn |
2078-502X |
publishDate |
2020-03-01 |
description |
The article presents new age data on the ‘key’ Early Paleozoic igneous complexes located in the central part of the Bureya continental massif of the Central Asian Fold Belt. Porphyroblastic quartz monzonites of the Kivili complex are dated to 453±2 Ma. The age of gneissic granites of the Sularin complex is ~481 Ma. The Sm-Nd isotope studies show that Late Ordovician quartz monzonites were formed mainly from crustal sources with Paleoproterozoic Nd model isotopic ages. Both ancient (Paleoproterozoic?) and younger sources were involved in the formation of Cambrian granites. Our data, as well as previously published materials, suggest several stages of the Early Paleozoic magmatism in the evolution of the Bureya continental massif: ~541, ~504–500, ~487, ~474 and ~453 Ma. Early Paleozoic magmatism developed under a similar scenario in the Jiamusi continental massif. In addition to the synchronism of Neoproterozoic magmatism within these continental massifs, this feature testifies to their common geological history. |
topic |
bureya continental massif central asian fold belt granitoid magmatism u-pb and u-th-pb geochronology early paleozoic source |
url |
https://www.gt-crust.ru/jour/article/view/987 |
work_keys_str_mv |
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