Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields

Magnetic, gravity, geothermal, seismic and tomographic data from the lithosphere were first jointly examined. A multidisciplinary interpretation has resulted in a new and consistent model for lithospheric density, magnetic, thermal and velocity heterogeneities. Faults of different orders for the cry...

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Дата:2015
Автори: Starostenko, V. I., Rusakov, O.M., Pashkevich, I.K., Kutas, R.I., Makarenko, I.B., Legostaeva, O.V., Lebed, T., Savchenko, A.
Формат: Стаття
Мова:Англійська
Опубліковано: S. Subbotin Institute of Geophysics of the NAS of Ukraine 2015
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Онлайн доступ:https://journals.uran.ua/geofizicheskiy/article/view/111298
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Назва журналу:Geofizicheskiy Zhurnal

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Geofizicheskiy Zhurnal
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author Starostenko, V. I.
Rusakov, O.M.
Pashkevich, I.K.
Kutas, R.I.
Makarenko, I.B.
Legostaeva, O.V.
Lebed, T.
Savchenko, A.
author_facet Starostenko, V. I.
Rusakov, O.M.
Pashkevich, I.K.
Kutas, R.I.
Makarenko, I.B.
Legostaeva, O.V.
Lebed, T.
Savchenko, A.
author_sort Starostenko, V. I.
baseUrl_str
collection OJS
datestamp_date 2020-10-07T11:40:35Z
description Magnetic, gravity, geothermal, seismic and tomographic data from the lithosphere were first jointly examined. A multidisciplinary interpretation has resulted in a new and consistent model for lithospheric density, magnetic, thermal and velocity heterogeneities. Faults of different orders for the crystalline crust have been mapped in details. Large deep fault zones were recognized. Among them is the most prominent Odessa-Sinop-Ordu (OSO) fault zone, which played a key role in the opening and development of the Black Sea Depression. A fundamental difference was revealed between the crustal and mantle structure and geophysical parameters of the Western Black Sea Basin (WBSB) and Eastern Black Sea Basin (EBSB). These dissimilarities are in the size of «non-granitic» crust, pattern and intensity of heat flow, topography of the lower boundary of the thermal lithosphere, mantle seismic velocity and structure of magnetic and residual gravity anomalies. Based on new information it was demonstrated that the WBSB and EBSB were diachronously formed on two large distinct continental blocks with independent post-rift development of the sub-basins. The rifting of the western sub-basin commenced earlier than that of the eastern one. The EBSB is characterized by younger thermal activity than the WBSB and consequently it was stabilized later. The Mid Black Sea High (MBSH) is not a single tectonic unit but is formed by two ridges of various crystalline crustal structure and age shifted relative to each other by the faults of the OSO zone.
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spelling journalsuranua-geofizicheskiy-article-1112982020-10-07T11:40:35Z Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields Starostenko, V. I. Rusakov, O.M. Pashkevich, I.K. Kutas, R.I. Makarenko, I.B. Legostaeva, O.V. Lebed, T. Savchenko, A. The Black Sea basins magnetics gravity heat flow fault tectonics seismic tomography lithosphere heterogeneity Magnetic, gravity, geothermal, seismic and tomographic data from the lithosphere were first jointly examined. A multidisciplinary interpretation has resulted in a new and consistent model for lithospheric density, magnetic, thermal and velocity heterogeneities. Faults of different orders for the crystalline crust have been mapped in details. Large deep fault zones were recognized. Among them is the most prominent Odessa-Sinop-Ordu (OSO) fault zone, which played a key role in the opening and development of the Black Sea Depression. A fundamental difference was revealed between the crustal and mantle structure and geophysical parameters of the Western Black Sea Basin (WBSB) and Eastern Black Sea Basin (EBSB). These dissimilarities are in the size of «non-granitic» crust, pattern and intensity of heat flow, topography of the lower boundary of the thermal lithosphere, mantle seismic velocity and structure of magnetic and residual gravity anomalies. Based on new information it was demonstrated that the WBSB and EBSB were diachronously formed on two large distinct continental blocks with independent post-rift development of the sub-basins. The rifting of the western sub-basin commenced earlier than that of the eastern one. The EBSB is characterized by younger thermal activity than the WBSB and consequently it was stabilized later. The Mid Black Sea High (MBSH) is not a single tectonic unit but is formed by two ridges of various crystalline crustal structure and age shifted relative to each other by the faults of the OSO zone. S. Subbotin Institute of Geophysics of the NAS of Ukraine 2015-03-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/111298 10.24028/gzh.0203-3100.v37i2.2015.111298 Geofizicheskiy Zhurnal; Vol. 37 No. 2 (2015); 3-28 Геофизический журнал; Том 37 № 2 (2015); 3-28 Геофізичний журнал; Том 37 № 2 (2015); 3-28 2524-1052 0203-3100 en https://journals.uran.ua/geofizicheskiy/article/view/111298/106279 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0
spellingShingle The Black Sea basins
magnetics
gravity
heat flow
fault tectonics
seismic tomography
lithosphere heterogeneity
Starostenko, V. I.
Rusakov, O.M.
Pashkevich, I.K.
Kutas, R.I.
Makarenko, I.B.
Legostaeva, O.V.
Lebed, T.
Savchenko, A.
Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title_full Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title_fullStr Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title_full_unstemmed Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title_short Heterogeneous structure of the lithosphere in the Black Sea from a multidisciplinary analysis of geophysical fields
title_sort heterogeneous structure of the lithosphere in the black sea from a multidisciplinary analysis of geophysical fields
topic The Black Sea basins
magnetics
gravity
heat flow
fault tectonics
seismic tomography
lithosphere heterogeneity
topic_facet The Black Sea basins
magnetics
gravity
heat flow
fault tectonics
seismic tomography
lithosphere heterogeneity
url https://journals.uran.ua/geofizicheskiy/article/view/111298
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