Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures
New geophysical models of the Earth's crust were used to study the possible nature of the Pacific Margin Anomaly (PMA) near the Antarctic Peninsula (AP). The data have been presented, which permitted analyzing spatial distribution of PMA and its deep sources on the continental margin of AP. Wes...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | Russian |
Published: |
Subbotin Institute of Geophysics of the NAS of Ukraine
2017
|
Subjects: | |
Online Access: | http://journals.uran.ua/geofizicheskiy/article/view/104036 |
id |
fturanojs:oai:ojs.journals.uran.ua:article/104036 |
---|---|
record_format |
openpolar |
spelling |
fturanojs:oai:ojs.journals.uran.ua:article/104036 2023-05-15T13:39:33+02:00 Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures Soloviev, V.D. Korchagin, I.N. 2017-06-22 application/pdf http://journals.uran.ua/geofizicheskiy/article/view/104036 rus rus Subbotin Institute of Geophysics of the NAS of Ukraine http://journals.uran.ua/geofizicheskiy/article/view/104036/195732 http://journals.uran.ua/geofizicheskiy/article/view/104036 Copyright (c) 2020 Geofizicheskiy Zhurnal Copyright (c) 2020 Геофизический журнал Copyright (c) 2020 Геофізичний журнал http://creativecommons.org/licenses/by/4.0 CC-BY Geofizicheskiy Zhurnal; Том 39, № 3 (2017); 76-90 Геофизический журнал; Том 39, № 3 (2017); 76-90 Геофізичний журнал; Том 39, № 3 (2017); 76-90 2524-1052 0203-3100 Antarctic Peninsula crust Pacific Margin anomaly sources of magnetic anomalies geodynamics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2017 fturanojs 2020-10-12T23:28:52Z New geophysical models of the Earth's crust were used to study the possible nature of the Pacific Margin Anomaly (PMA) near the Antarctic Peninsula (AP). The data have been presented, which permitted analyzing spatial distribution of PMA and its deep sources on the continental margin of AP. Western and Eastern PMA-branches may correspond to different crustal blocks associated with predominantly Cretaceous magmatic intrusions of basic rocks. These branches of PMA were formed in the Early Cretaceous in structures, separated by a fault zone. Spatial heterogeneity of different segments of РМА may also be connected with different depth, thickness and magnetic susceptibility of separate bodies, which form the sources of regional anomalies. Active tectonic processes in the Mesozoic—Cenozoic resulted in the complex evolution of the structures of the region and appearance of vast deep magnetic sources of PMA along the AP margin formed during the phases of magmatic activity. Formation of separate segments of PMA can be connected with processes of tectonic movements near the border of the plates (Antarctica and Scotia) as well as in the areas of paleorifts formation. New geophysical results for different PMA-segments (from the Palmer Land to Powell Basin) replenish current ideas on the sources and origin of this big positive magnetic anomaly of the Pacific coast and show the necessity of searching new mechanisms of forming the structures of continental margin of AP Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Palmer Land Scientific Periodicals of Ukraine (Ukrainian Research and Academic Network) Antarctic Antarctic Peninsula Pacific Palmer Land ENVELOPE(-65.000,-65.000,-71.500,-71.500) Powell Basin ENVELOPE(-49.500,-49.500,-62.250,-62.250) The Antarctic |
institution |
Open Polar |
collection |
Scientific Periodicals of Ukraine (Ukrainian Research and Academic Network) |
op_collection_id |
fturanojs |
language |
Russian |
topic |
Antarctic Peninsula crust Pacific Margin anomaly sources of magnetic anomalies geodynamics |
spellingShingle |
Antarctic Peninsula crust Pacific Margin anomaly sources of magnetic anomalies geodynamics Soloviev, V.D. Korchagin, I.N. Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
topic_facet |
Antarctic Peninsula crust Pacific Margin anomaly sources of magnetic anomalies geodynamics |
description |
New geophysical models of the Earth's crust were used to study the possible nature of the Pacific Margin Anomaly (PMA) near the Antarctic Peninsula (AP). The data have been presented, which permitted analyzing spatial distribution of PMA and its deep sources on the continental margin of AP. Western and Eastern PMA-branches may correspond to different crustal blocks associated with predominantly Cretaceous magmatic intrusions of basic rocks. These branches of PMA were formed in the Early Cretaceous in structures, separated by a fault zone. Spatial heterogeneity of different segments of РМА may also be connected with different depth, thickness and magnetic susceptibility of separate bodies, which form the sources of regional anomalies. Active tectonic processes in the Mesozoic—Cenozoic resulted in the complex evolution of the structures of the region and appearance of vast deep magnetic sources of PMA along the AP margin formed during the phases of magmatic activity. Formation of separate segments of PMA can be connected with processes of tectonic movements near the border of the plates (Antarctica and Scotia) as well as in the areas of paleorifts formation. New geophysical results for different PMA-segments (from the Palmer Land to Powell Basin) replenish current ideas on the sources and origin of this big positive magnetic anomaly of the Pacific coast and show the necessity of searching new mechanisms of forming the structures of continental margin of AP |
format |
Article in Journal/Newspaper |
author |
Soloviev, V.D. Korchagin, I.N. |
author_facet |
Soloviev, V.D. Korchagin, I.N. |
author_sort |
Soloviev, V.D. |
title |
Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
title_short |
Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
title_full |
Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
title_fullStr |
Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
title_full_unstemmed |
Magnetic anomalies and the features of geodynamic development of the Antarctic Peninsula continental margin structures |
title_sort |
magnetic anomalies and the features of geodynamic development of the antarctic peninsula continental margin structures |
publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
publishDate |
2017 |
url |
http://journals.uran.ua/geofizicheskiy/article/view/104036 |
long_lat |
ENVELOPE(-65.000,-65.000,-71.500,-71.500) ENVELOPE(-49.500,-49.500,-62.250,-62.250) |
geographic |
Antarctic Antarctic Peninsula Pacific Palmer Land Powell Basin The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Pacific Palmer Land Powell Basin The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Palmer Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Palmer Land |
op_source |
Geofizicheskiy Zhurnal; Том 39, № 3 (2017); 76-90 Геофизический журнал; Том 39, № 3 (2017); 76-90 Геофізичний журнал; Том 39, № 3 (2017); 76-90 2524-1052 0203-3100 |
op_relation |
http://journals.uran.ua/geofizicheskiy/article/view/104036/195732 http://journals.uran.ua/geofizicheskiy/article/view/104036 |
op_rights |
Copyright (c) 2020 Geofizicheskiy Zhurnal Copyright (c) 2020 Геофизический журнал Copyright (c) 2020 Геофізичний журнал http://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
_version_ |
1766120138121150464 |