Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka
The 40Ar/39Ar dating of ultrapotassic rocks from Central Chukotka shows that these rocks are Early Cretaceous, and yields a narrow range of age variations (109 to 107 Ma), which correlates fairly well with the range of age variations of granitoids typical of the study area (117–105 Ma). There are th...
Published in: | Geodynamics & Tectonophysics |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English Russian |
Published: |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5800/GT-2021-12-1-0513 https://doaj.org/article/122bbd6e1f284b1c91245f0d0099123c |
id |
ftdoajarticles:oai:doaj.org/article:122bbd6e1f284b1c91245f0d0099123c |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:122bbd6e1f284b1c91245f0d0099123c 2023-05-15T15:04:15+02:00 Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka S. V. Efremov A. V. Travin 2021-03-01T00:00:00Z https://doi.org/10.5800/GT-2021-12-1-0513 https://doaj.org/article/122bbd6e1f284b1c91245f0d0099123c EN RU eng rus Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust https://www.gt-crust.ru/jour/article/view/1165 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2021-12-1-0513 https://doaj.org/article/122bbd6e1f284b1c91245f0d0099123c Геодинамика и тектонофизика, Vol 12, Iss 1, Pp 76-83 (2021) 39ar/40ar age ultrapotassic rocks central chukotka Science Q article 2021 ftdoajarticles https://doi.org/10.5800/GT-2021-12-1-0513 2022-12-30T23:04:16Z The 40Ar/39Ar dating of ultrapotassic rocks from Central Chukotka shows that these rocks are Early Cretaceous, and yields a narrow range of age variations (109 to 107 Ma), which correlates fairly well with the range of age variations of granitoids typical of the study area (117–105 Ma). There are thus grounds to suggest that the ultrapotassic magmas and granitoids resulted from the same geological process that can be identified from the material characteristics of the ultrapotassic magmas.In the modern concepts of the regional geological development, the formation of the granitoid and ultrapotassic magmas can be related to the continental lithosphere extension due to the collision of Eurasian plate and the Chukotka – Arctic Alaska continental block.Using modern genetic models based on the interpretations of the material characteristics of ultrapotassic magmas, it is possible to limit the number of genetic hypotheses and to relate the continental lithosphere extension to the processes that took place in the upper mantle of the study area. Article in Journal/Newspaper Arctic Chukotka Alaska Directory of Open Access Journals: DOAJ Articles Arctic Geodynamics & Tectonophysics 12 1 76 83 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
39ar/40ar age ultrapotassic rocks central chukotka Science Q |
spellingShingle |
39ar/40ar age ultrapotassic rocks central chukotka Science Q S. V. Efremov A. V. Travin Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
topic_facet |
39ar/40ar age ultrapotassic rocks central chukotka Science Q |
description |
The 40Ar/39Ar dating of ultrapotassic rocks from Central Chukotka shows that these rocks are Early Cretaceous, and yields a narrow range of age variations (109 to 107 Ma), which correlates fairly well with the range of age variations of granitoids typical of the study area (117–105 Ma). There are thus grounds to suggest that the ultrapotassic magmas and granitoids resulted from the same geological process that can be identified from the material characteristics of the ultrapotassic magmas.In the modern concepts of the regional geological development, the formation of the granitoid and ultrapotassic magmas can be related to the continental lithosphere extension due to the collision of Eurasian plate and the Chukotka – Arctic Alaska continental block.Using modern genetic models based on the interpretations of the material characteristics of ultrapotassic magmas, it is possible to limit the number of genetic hypotheses and to relate the continental lithosphere extension to the processes that took place in the upper mantle of the study area. |
format |
Article in Journal/Newspaper |
author |
S. V. Efremov A. V. Travin |
author_facet |
S. V. Efremov A. V. Travin |
author_sort |
S. V. Efremov |
title |
Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
title_short |
Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
title_full |
Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
title_fullStr |
Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
title_full_unstemmed |
Isotopic age and paleogeodynamic position of ultrapotassic magmatism of Central Chukotka |
title_sort |
isotopic age and paleogeodynamic position of ultrapotassic magmatism of central chukotka |
publisher |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
publishDate |
2021 |
url |
https://doi.org/10.5800/GT-2021-12-1-0513 https://doaj.org/article/122bbd6e1f284b1c91245f0d0099123c |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Chukotka Alaska |
genre_facet |
Arctic Chukotka Alaska |
op_source |
Геодинамика и тектонофизика, Vol 12, Iss 1, Pp 76-83 (2021) |
op_relation |
https://www.gt-crust.ru/jour/article/view/1165 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2021-12-1-0513 https://doaj.org/article/122bbd6e1f284b1c91245f0d0099123c |
op_doi |
https://doi.org/10.5800/GT-2021-12-1-0513 |
container_title |
Geodynamics & Tectonophysics |
container_volume |
12 |
container_issue |
1 |
container_start_page |
76 |
op_container_end_page |
83 |
_version_ |
1766336052040040448 |