NDLI: The Earth’s crust of the deep platform basins in the Northern Eurasia and their origin

Content Provider	Springer Nature Link
Author	Pavlenkova, N. I. Kashubin, S. N. Pavlenkova, G. A.
Copyright Year	2016
Abstract	Several large basins with a depth up to 15–20 km are revealed in the platform regions of Northern Eurasia—the Pre-Caspian, Vilyui, Pur-Gydan, and Kara–Barents platforms. All these basins have two structural features in common: they all have a rounded shape with steep walls and are marked with the reduced thickness of the Earth’s crust. With the basins' depth of 15–20 km, the basement top is flat and has an almost horizontal surface. The basins differ by the average seismic velocities in the crystalline crust which vary from 6.2–64 to 6.8–7.0 km/s. Another distinction is the type of the crystalline crust ranging from continental with a thick granite-gneiss layer to suboceanic, represented by the basite layer. For explaining the formation of these basins, we suggest a combined petrophysical model which includes several geodynamical processes of different intensity: rifting, basification, and eclogitization of the Earth’s crust.The model also takes into account the process of material outflow from beneath a basin through the midcrustal layer of increased porosity and fluid saturation. This accounts for the strong reduction of the granite-gneiss layer with the preservation of the basement’s flat surface and for the formation of significant source areas of clastic material around the basin. The formation of these basins requires an extensive and sufficiently laterally uniform and longoperating energy source. The intrusion of the mantle material saturated with fluids into the bottom portions of the crust or, simply, the long-lasting inflow of the deep fluids are the most probable sources of this kind.
Starting Page	770
Ending Page	784
Page Count	15
File Format	PDF
ISSN	10693513
Journal	Izvestiya, Physics of the Solid Earth
Volume Number	52
Issue Number	5
e-ISSN	15556506
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-09-14
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earth’s crust deep seismic sounding deep basins crustal type weakened crustal layer Geophysics/Geodesy
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Deep seismic soundings on the 1-AP profile in the Barents Sea: Methods and results

Deep Seismic Sounding of the Earth’s Crust and Upper Mantle

One method for probabilistic prediction of the material composition of deep crustal horizons using the geophysical data

Deep seismic studies in the central Karelian Craton

Rigidity of the fault zones in the Earth’s crust estimated from seismic data

Seismic response to electromagnetic sounding of the Earth’s lithosphere

Velocity-density models of the Earth’s crust and upper mantle from the quartz, Craton, and Kimberlite superlong seismic profiles

Deformation of the Earth’s crust in the Northern Tien Shan according to the earthquake focal data and satellite geodesy

Dynamic processes in the system of interacting geospheres at the Earth’s crust-atmosphere boundary

The Earth’s crust of the deep platform basins in the Northern Eurasia and their origin

Similar Documents

Deep seismic soundings on the 1-AP profile in the Barents Sea: Methods and results

Deep Seismic Sounding of the Earth’s Crust and Upper Mantle

One method for probabilistic prediction of the material composition of deep crustal horizons using the geophysical data

Deep seismic studies in the central Karelian Craton

Rigidity of the fault zones in the Earth’s crust estimated from seismic data

Seismic response to electromagnetic sounding of the Earth’s lithosphere

Velocity-density models of the Earth’s crust and upper mantle from the quartz, Craton, and Kimberlite superlong seismic profiles

Deformation of the Earth’s crust in the Northern Tien Shan according to the earthquake focal data and satellite geodesy

Dynamic processes in the system of interacting geospheres at the Earth’s crust-atmosphere boundary

The Earth’s crust of the deep platform basins in the Northern Eurasia and their origin