Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling
Continental Earth’s crust is subdivided into two parts – upper, brittle crust (namely geological) and low, ductile crust (namely physical). This idea has been investigated by many researchers on the base of seismical data, laboratory study of rock specimens at high thermo dynamic conditions and on t...
Published in: | Global Journal of Earth Science and Engineering |
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ftavanpublishers:oai:ojs.pkp.sfu.ca:article/740 2023-05-15T16:13:11+02:00 Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling Abdulkhai A. Zhamaletdinov 2018-12-31 application/pdf https://www.avantipublishers.com/index.php/gjese/article/view/740 https://doi.org/10.15377/2409-5710.2018.05.6 eng eng Avanti Publishers https://www.avantipublishers.com/index.php/gjese/article/view/740/393 https://www.avantipublishers.com/index.php/gjese/article/view/740 doi:10.15377/2409-5710.2018.05.6 Global Journal of Earth Science and Engineering; Vol. 5 (2018); 68-80 2409-5710 lithosphere Control source soundings Geodynamics Conrad boundary Kola superdeep Boundary of impermeability info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftavanpublishers https://doi.org/10.15377/2409-5710.2018.05.6 2022-08-05T06:31:24Z Continental Earth’s crust is subdivided into two parts – upper, brittle crust (namely geological) and low, ductile crust (namely physical). This idea has been investigated by many researchers on the base of seismical data, laboratory study of rock specimens at high thermo dynamic conditions and on the base of theoretical speculations [1, 2, 3]. In this presentation this idea is investigated on the base of the deep soundings with powerful controlled sources such as MHD-generator “Khibiny”, industrial power transmitting lines (experiment “FENICS”) and with taking into account results of superdeep drilling on Fennoscandian shield. The summary analysis of the obtained data allows to draw a conclusion that the upper part of continental crystalline earth's crust has a thickness of the order of 10-12 km. Its principal peculiarities are: the sharp horizontal heterogeneity of electrical properties, a wide range of variations of electrical resistivity from 10 till 104 Ohm∙m, a high porosity, brittleness, and a presence of fluids (meteoric waters) that penetrate from the day time surface to the depths of up to 5-10 km. Upper crust is the most actively involved in geological processes. The low crust belongs to the depth interval from 10–12 to 35–45 km (up to the Moho boundary). It is remarkable by horizontal homogeneity of electrical properties and high electrical resistivity in the range of 105–106 Ohm∙m, by the low porosity and increased ductility. Electrical conductivity of the low crust is mostly determined by influence of planetary physical–chemical parameters (pressure, temperature, and viscosity), phase transitions of substances depending on geodynamic peculiarities of evolution for different segments of the Earth crust. As an area of physical processes influence, the low crust is nearer by its origin to the upper mantle then to the geological Earth crust. The low and upper parts of the Earth crust are subdivided between each other by the boundary of the sharp increase of electrical resistivity at the depth around ... Article in Journal/Newspaper Fennoscandian Avanti Publishers (E-Journals) Khibiny ENVELOPE(33.210,33.210,67.679,67.679) Global Journal of Earth Science and Engineering 5 68 80 |
institution |
Open Polar |
collection |
Avanti Publishers (E-Journals) |
op_collection_id |
ftavanpublishers |
language |
English |
topic |
lithosphere Control source soundings Geodynamics Conrad boundary Kola superdeep Boundary of impermeability |
spellingShingle |
lithosphere Control source soundings Geodynamics Conrad boundary Kola superdeep Boundary of impermeability Abdulkhai A. Zhamaletdinov Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
topic_facet |
lithosphere Control source soundings Geodynamics Conrad boundary Kola superdeep Boundary of impermeability |
description |
Continental Earth’s crust is subdivided into two parts – upper, brittle crust (namely geological) and low, ductile crust (namely physical). This idea has been investigated by many researchers on the base of seismical data, laboratory study of rock specimens at high thermo dynamic conditions and on the base of theoretical speculations [1, 2, 3]. In this presentation this idea is investigated on the base of the deep soundings with powerful controlled sources such as MHD-generator “Khibiny”, industrial power transmitting lines (experiment “FENICS”) and with taking into account results of superdeep drilling on Fennoscandian shield. The summary analysis of the obtained data allows to draw a conclusion that the upper part of continental crystalline earth's crust has a thickness of the order of 10-12 km. Its principal peculiarities are: the sharp horizontal heterogeneity of electrical properties, a wide range of variations of electrical resistivity from 10 till 104 Ohm∙m, a high porosity, brittleness, and a presence of fluids (meteoric waters) that penetrate from the day time surface to the depths of up to 5-10 km. Upper crust is the most actively involved in geological processes. The low crust belongs to the depth interval from 10–12 to 35–45 km (up to the Moho boundary). It is remarkable by horizontal homogeneity of electrical properties and high electrical resistivity in the range of 105–106 Ohm∙m, by the low porosity and increased ductility. Electrical conductivity of the low crust is mostly determined by influence of planetary physical–chemical parameters (pressure, temperature, and viscosity), phase transitions of substances depending on geodynamic peculiarities of evolution for different segments of the Earth crust. As an area of physical processes influence, the low crust is nearer by its origin to the upper mantle then to the geological Earth crust. The low and upper parts of the Earth crust are subdivided between each other by the boundary of the sharp increase of electrical resistivity at the depth around ... |
format |
Article in Journal/Newspaper |
author |
Abdulkhai A. Zhamaletdinov |
author_facet |
Abdulkhai A. Zhamaletdinov |
author_sort |
Abdulkhai A. Zhamaletdinov |
title |
Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
title_short |
Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
title_full |
Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
title_fullStr |
Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
title_full_unstemmed |
Geodynamics and Nature of the Conrad Boundary by Results of the Deep Electromagnetic Soundings and the Superdeep Drilling |
title_sort |
geodynamics and nature of the conrad boundary by results of the deep electromagnetic soundings and the superdeep drilling |
publisher |
Avanti Publishers |
publishDate |
2018 |
url |
https://www.avantipublishers.com/index.php/gjese/article/view/740 https://doi.org/10.15377/2409-5710.2018.05.6 |
long_lat |
ENVELOPE(33.210,33.210,67.679,67.679) |
geographic |
Khibiny |
geographic_facet |
Khibiny |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Global Journal of Earth Science and Engineering; Vol. 5 (2018); 68-80 2409-5710 |
op_relation |
https://www.avantipublishers.com/index.php/gjese/article/view/740/393 https://www.avantipublishers.com/index.php/gjese/article/view/740 doi:10.15377/2409-5710.2018.05.6 |
op_doi |
https://doi.org/10.15377/2409-5710.2018.05.6 |
container_title |
Global Journal of Earth Science and Engineering |
container_volume |
5 |
container_start_page |
68 |
op_container_end_page |
80 |
_version_ |
1765998787677913088 |