STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS
The article deals with the fundamental concepts of a new method of interpretation of regional gravimetry (scale 1:1000000) based on the idea of the deformational nature of low-frequency gravity anomalies. The method provided an opportunity to identify the direction of tectonic compression in the Yak...
Published in: | Geodynamics & Tectonophysics |
---|---|
Main Author: | |
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-2021-12-4-0567 https://doaj.org/article/437ed01402da41ceb3e6c0a80cbc27df |
id |
ftdoajarticles:oai:doaj.org/article:437ed01402da41ceb3e6c0a80cbc27df |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:437ed01402da41ceb3e6c0a80cbc27df 2023-05-15T18:45:30+02:00 STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS S. M. Makeev 2021-12-01T00:00:00Z https://doi.org/10.5800/GT-2021-12-4-0567 https://doaj.org/article/437ed01402da41ceb3e6c0a80cbc27df EN RU eng rus Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust https://www.gt-crust.ru/jour/article/view/1378 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2021-12-4-0567 https://doaj.org/article/437ed01402da41ceb3e6c0a80cbc27df Геодинамика и тектонофизика, Vol 12, Iss 4, Pp 992-1008 (2021) kimberlite pipe gravimetry deformation shear shear interaction transpression extension rock flow fractality mesomechanics Science Q article 2021 ftdoajarticles https://doi.org/10.5800/GT-2021-12-4-0567 2022-12-30T23:04:13Z The article deals with the fundamental concepts of a new method of interpretation of regional gravimetry (scale 1:1000000) based on the idea of the deformational nature of low-frequency gravity anomalies. The method provided an opportunity to identify the direction of tectonic compression in the Yakut diamond-bearing province, to localize segments and axes of inter-shear compression and extension of different kinematics and on that basis to distinguish the shear interaction zones spatially correlating with the location of kimberlite pipes. Particularly, the whole area is characterized by four transpressive compression directions: a pair of orthogonal (dextral with azimuth 8° and sinistral with azimuth 98°) and a pair of diagonal (dextral with azimuth 38° and sinistral with azimuth 128°). These data correlate to those from the regional tectonophysical studies not only within the compression direction azimuths but also within kinematics of transpressive motions for two main phases in geodynamical evolution of the Yakutsk diamond-bearing province (YDP) - predominantly dextral for the first phase of the northeastern compression and sinistral for second phase of the northwestern compression. The article also shows that the Alakit-Olenek mineragenic zone is an extensive (~500 km) area of plastic deformation of rocks ~90 km in width with the right-lateral kinematics of apparent motions of the rocks along its northern and southern boundaries. The southern boundary of the mineragenic zone exhibits the northeaststriking continuity whereas its northern boundary is discontinuous. The boundaries of the Alakit-Olenek mineragenic zone are controlled by the zones of shear interaction of different dynamics and kinematics, which are spatially related to kimberlite pipes and diamond placer deposits. The results of this study imply that the method proposed for interpretation of gravity field can predict the occurrence of structures of geodynamic control of kimberlite magmatism of the Yakut diamond-bearing province. Article in Journal/Newspaper Yakutsk Directory of Open Access Journals: DOAJ Articles Yakutsk Alakit ENVELOPE(110.633,110.633,66.133,66.133) Geodynamics & Tectonophysics 12 4 992 1008 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
kimberlite pipe gravimetry deformation shear shear interaction transpression extension rock flow fractality mesomechanics Science Q |
spellingShingle |
kimberlite pipe gravimetry deformation shear shear interaction transpression extension rock flow fractality mesomechanics Science Q S. M. Makeev STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
topic_facet |
kimberlite pipe gravimetry deformation shear shear interaction transpression extension rock flow fractality mesomechanics Science Q |
description |
The article deals with the fundamental concepts of a new method of interpretation of regional gravimetry (scale 1:1000000) based on the idea of the deformational nature of low-frequency gravity anomalies. The method provided an opportunity to identify the direction of tectonic compression in the Yakut diamond-bearing province, to localize segments and axes of inter-shear compression and extension of different kinematics and on that basis to distinguish the shear interaction zones spatially correlating with the location of kimberlite pipes. Particularly, the whole area is characterized by four transpressive compression directions: a pair of orthogonal (dextral with azimuth 8° and sinistral with azimuth 98°) and a pair of diagonal (dextral with azimuth 38° and sinistral with azimuth 128°). These data correlate to those from the regional tectonophysical studies not only within the compression direction azimuths but also within kinematics of transpressive motions for two main phases in geodynamical evolution of the Yakutsk diamond-bearing province (YDP) - predominantly dextral for the first phase of the northeastern compression and sinistral for second phase of the northwestern compression. The article also shows that the Alakit-Olenek mineragenic zone is an extensive (~500 km) area of plastic deformation of rocks ~90 km in width with the right-lateral kinematics of apparent motions of the rocks along its northern and southern boundaries. The southern boundary of the mineragenic zone exhibits the northeaststriking continuity whereas its northern boundary is discontinuous. The boundaries of the Alakit-Olenek mineragenic zone are controlled by the zones of shear interaction of different dynamics and kinematics, which are spatially related to kimberlite pipes and diamond placer deposits. The results of this study imply that the method proposed for interpretation of gravity field can predict the occurrence of structures of geodynamic control of kimberlite magmatism of the Yakut diamond-bearing province. |
format |
Article in Journal/Newspaper |
author |
S. M. Makeev |
author_facet |
S. M. Makeev |
author_sort |
S. M. Makeev |
title |
STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
title_short |
STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
title_full |
STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
title_fullStr |
STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
title_full_unstemmed |
STRUCTURAL-GEODYNAMIC CONTROL OF KIMBERLITE PIPES OF THE YAKUT DIAMOND PROVINCE ACCORDING TO THE DATA OF GRAVISTRUCTURAL ANALYSIS |
title_sort |
structural-geodynamic control of kimberlite pipes of the yakut diamond province according to the data of gravistructural analysis |
publisher |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
publishDate |
2021 |
url |
https://doi.org/10.5800/GT-2021-12-4-0567 https://doaj.org/article/437ed01402da41ceb3e6c0a80cbc27df |
long_lat |
ENVELOPE(110.633,110.633,66.133,66.133) |
geographic |
Yakutsk Alakit |
geographic_facet |
Yakutsk Alakit |
genre |
Yakutsk |
genre_facet |
Yakutsk |
op_source |
Геодинамика и тектонофизика, Vol 12, Iss 4, Pp 992-1008 (2021) |
op_relation |
https://www.gt-crust.ru/jour/article/view/1378 https://doaj.org/toc/2078-502X 2078-502X doi:10.5800/GT-2021-12-4-0567 https://doaj.org/article/437ed01402da41ceb3e6c0a80cbc27df |
op_doi |
https://doi.org/10.5800/GT-2021-12-4-0567 |
container_title |
Geodynamics & Tectonophysics |
container_volume |
12 |
container_issue |
4 |
container_start_page |
992 |
op_container_end_page |
1008 |
_version_ |
1766236574299717632 |