Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia
In Central and Northeast Eurasia, we describe the sedimentation and tectonic regime of a subglobal epoch of land peneplanation, which at the latest Cretaceous and at the earliest Paleogene covered all continents. It is usually associated with the regime of tectonic quiescence. However our researches...
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A.N. Zavaritsky Institute of Geology and Geochemistry
2015
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ftdoajarticles:oai:doaj.org/article:439418944bc54e118f381c2a708c430f 2023-05-15T15:12:24+02:00 Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia Yu. G. Tsekhovsky 2015-01-01T00:00:00Z https://doaj.org/article/439418944bc54e118f381c2a708c430f EN RU eng rus A.N. Zavaritsky Institute of Geology and Geochemistry https://test.lithosphere.ru/jour/article/view/171 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X https://doaj.org/article/439418944bc54e118f381c2a708c430f Литосфера, Vol 0, Iss 1, Pp 5-23 (2015) пограничная мел-палеогеновая эпоха Центральная и Восточная Евразия тектонический режим пенеплены коры выветривания осадконакопление гидротермы вулканизм рифтообразование Cretaceous-Paleogene boundary epoch Central and Eastern Eurasia tectonic regime peneplains weathering crust sedimentation hydrotherms volcanism rifting Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 article 2015 ftdoajarticles 2022-12-31T00:40:59Z In Central and Northeast Eurasia, we describe the sedimentation and tectonic regime of a subglobal epoch of land peneplanation, which at the latest Cretaceous and at the earliest Paleogene covered all continents. It is usually associated with the regime of tectonic quiescence. However our researches determined that the time of vertical tectonic movement stabilization was accompanied by a sharp strengthening of crustal extension processes. In Central Eurasia, on the land platform (partly covered by sea), these processes led to relief planation, formation of weathering crust and products of its rewashing, activation of hydrothermal process, and in some cases (rather not often and locally) - to the appearance of predominantly basaltic volcanism spots. Synchronously mountainous landscape with areas of plain relief developed on the eastern mobile Pacific and Arctic margins of Eurasia, which are covered by Laramide tectogenesis. However, this areas are characterized by widespread crustal extension, whose intensity sharply increased (as compared with platform regions). This led to the formation of grabens and their extended belts, to mass inception of rifts, activation of basaltic volcanism. Sediments contain abundant clastic deposits, which make up intermountain molasses and fan formations which fill up the grabens among plain relief. It is shown that the mobile margin of the continent is characterized by processes of crustal compression, accompanied by orogenesis and folded deformations. However, compared with extension processes they played a minor role. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Pacific |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
пограничная мел-палеогеновая эпоха Центральная и Восточная Евразия тектонический режим пенеплены коры выветривания осадконакопление гидротермы вулканизм рифтообразование Cretaceous-Paleogene boundary epoch Central and Eastern Eurasia tectonic regime peneplains weathering crust sedimentation hydrotherms volcanism rifting Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
spellingShingle |
пограничная мел-палеогеновая эпоха Центральная и Восточная Евразия тектонический режим пенеплены коры выветривания осадконакопление гидротермы вулканизм рифтообразование Cretaceous-Paleogene boundary epoch Central and Eastern Eurasia tectonic regime peneplains weathering crust sedimentation hydrotherms volcanism rifting Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 Yu. G. Tsekhovsky Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
topic_facet |
пограничная мел-палеогеновая эпоха Центральная и Восточная Евразия тектонический режим пенеплены коры выветривания осадконакопление гидротермы вулканизм рифтообразование Cretaceous-Paleogene boundary epoch Central and Eastern Eurasia tectonic regime peneplains weathering crust sedimentation hydrotherms volcanism rifting Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
description |
In Central and Northeast Eurasia, we describe the sedimentation and tectonic regime of a subglobal epoch of land peneplanation, which at the latest Cretaceous and at the earliest Paleogene covered all continents. It is usually associated with the regime of tectonic quiescence. However our researches determined that the time of vertical tectonic movement stabilization was accompanied by a sharp strengthening of crustal extension processes. In Central Eurasia, on the land platform (partly covered by sea), these processes led to relief planation, formation of weathering crust and products of its rewashing, activation of hydrothermal process, and in some cases (rather not often and locally) - to the appearance of predominantly basaltic volcanism spots. Synchronously mountainous landscape with areas of plain relief developed on the eastern mobile Pacific and Arctic margins of Eurasia, which are covered by Laramide tectogenesis. However, this areas are characterized by widespread crustal extension, whose intensity sharply increased (as compared with platform regions). This led to the formation of grabens and their extended belts, to mass inception of rifts, activation of basaltic volcanism. Sediments contain abundant clastic deposits, which make up intermountain molasses and fan formations which fill up the grabens among plain relief. It is shown that the mobile margin of the continent is characterized by processes of crustal compression, accompanied by orogenesis and folded deformations. However, compared with extension processes they played a minor role. |
format |
Article in Journal/Newspaper |
author |
Yu. G. Tsekhovsky |
author_facet |
Yu. G. Tsekhovsky |
author_sort |
Yu. G. Tsekhovsky |
title |
Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
title_short |
Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
title_full |
Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
title_fullStr |
Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
title_full_unstemmed |
Sedimentogenesis and geodynamics in the Cretaceous-Paleogene boundary at the epoch of continental peneplanation. Article 1. Central and Eastern Eurasia |
title_sort |
sedimentogenesis and geodynamics in the cretaceous-paleogene boundary at the epoch of continental peneplanation. article 1. central and eastern eurasia |
publisher |
A.N. Zavaritsky Institute of Geology and Geochemistry |
publishDate |
2015 |
url |
https://doaj.org/article/439418944bc54e118f381c2a708c430f |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Литосфера, Vol 0, Iss 1, Pp 5-23 (2015) |
op_relation |
https://test.lithosphere.ru/jour/article/view/171 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X https://doaj.org/article/439418944bc54e118f381c2a708c430f |
_version_ |
1766343079842807808 |