DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA
Deep velocity sections of the transition zone from the Siberian platform to the Central Asian mobile belt are constructed by teleseismic tomography and P-receiver function techniques. An array of the dense ancient Siberian craton is identified in the velocity sections with areas of high seismic velo...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2016-03-01
|
| Series: | Геодинамика и тектонофизика |
| Subjects: | |
| Online Access: | https://www.gt-crust.ru/jour/article/view/224 |
| _version_ | 1797855788331433984 |
|---|---|
| author | V. V. Mordvinova M. M. Kobelev A. V. Treussov M. A. Khritova D. S. Trynkova E. A. Kobeleva O. F. Lukhneva |
| author_facet | V. V. Mordvinova M. M. Kobelev A. V. Treussov M. A. Khritova D. S. Trynkova E. A. Kobeleva O. F. Lukhneva |
| author_sort | V. V. Mordvinova |
| collection | DOAJ |
| description | Deep velocity sections of the transition zone from the Siberian platform to the Central Asian mobile belt are constructed by teleseismic tomography and P-receiver function techniques. An array of the dense ancient Siberian craton is identified in the velocity sections with areas of high seismic velocity. In the SSW section MOBAL_2003, the surface boundary of the craton corresponds to the southern margin of the Siberian platform and is nearly vertical to a depth of 120 km. At larger depths, the craton slides almost horizontally underneath the Tunka rift area. At depths from 150 to 250 km, it is in contact with the area under the Khamar-Daban mountain range. In the southeast, according to the SE velocity section PASSCAL_1992 across the South Baikal basin and the Khamar-Daban mountain range, the Siberian craton thickness is reduced from 270 to 150 km at the contact of the Siberian platform with the Baikal folded area. In this contact zone, the upper part of the craton is wedge-shaped and has an angle of about 45° with the ground surface; it completely tapers off at a depth of 150 km to the east of Lake Baikal. The vertical configuration of the southern segment of the Siberian craton, which evolved with time, may determine the nature of the Baikal rifting in the Cenozoic. |
| first_indexed | 2024-04-09T20:29:42Z |
| format | Article |
| id | doaj.art-1b80c19811164b25b50bfe24697ef977 |
| institution | Directory Open Access Journal |
| issn | 2078-502X |
| language | English |
| last_indexed | 2024-04-09T20:29:42Z |
| publishDate | 2016-03-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj.art-1b80c19811164b25b50bfe24697ef9772023-03-30T20:08:01ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2016-03-01718510310.5800/GT-2016-7-1-0198193DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATAV. V. Mordvinova0M. M. Kobelev1A. V. Treussov2M. A. Khritova3D. S. Trynkova4E. A. Kobeleva5O. F. Lukhneva6Institute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, RussiaInstitute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, Russia Baikal Division of Geophysical Survey, Siberian Branch of RAS, Irkutsk, RussiaO.Yu. Schmidt Institute of Physics of the Earth of RAS, 10 Bol’shaya Gruzinskaya street, Moscow D-242 123242, GSP-5, RussiaInstitute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, Russia Baikal Division of Geophysical Survey, Siberian Branch of RAS, Irkutsk, RussiaInstitute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, RussiaInstitute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, Russia Baikal Division of Geophysical Survey, Siberian Branch of RAS, Irkutsk, RussiaInstitute of the Earth’s Crust, Siberian Branch of RAS, 128 Lermontov street, Irkutsk 664033, RussiaDeep velocity sections of the transition zone from the Siberian platform to the Central Asian mobile belt are constructed by teleseismic tomography and P-receiver function techniques. An array of the dense ancient Siberian craton is identified in the velocity sections with areas of high seismic velocity. In the SSW section MOBAL_2003, the surface boundary of the craton corresponds to the southern margin of the Siberian platform and is nearly vertical to a depth of 120 km. At larger depths, the craton slides almost horizontally underneath the Tunka rift area. At depths from 150 to 250 km, it is in contact with the area under the Khamar-Daban mountain range. In the southeast, according to the SE velocity section PASSCAL_1992 across the South Baikal basin and the Khamar-Daban mountain range, the Siberian craton thickness is reduced from 270 to 150 km at the contact of the Siberian platform with the Baikal folded area. In this contact zone, the upper part of the craton is wedge-shaped and has an angle of about 45° with the ground surface; it completely tapers off at a depth of 150 km to the east of Lake Baikal. The vertical configuration of the southern segment of the Siberian craton, which evolved with time, may determine the nature of the Baikal rifting in the Cenozoic.https://www.gt-crust.ru/jour/article/view/224tomographyp-receiver functionseismic velocity sectionssiberian platformcentral asian mobile beltbaikal rifting in the cenozoic |
| spellingShingle | V. V. Mordvinova M. M. Kobelev A. V. Treussov M. A. Khritova D. S. Trynkova E. A. Kobeleva O. F. Lukhneva DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA Геодинамика и тектонофизика tomography p-receiver function seismic velocity sections siberian platform central asian mobile belt baikal rifting in the cenozoic |
| title | DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA |
| title_full | DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA |
| title_fullStr | DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA |
| title_full_unstemmed | DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA |
| title_short | DEEP STRUCTURE OF THE SIBERIAN PLATFORM – CENTRAL ASIAN MOBILE BELT TRANSITION ZONE FROM TELESEISMIC DATA |
| title_sort | deep structure of the siberian platform central asian mobile belt transition zone from teleseismic data |
| topic | tomography p-receiver function seismic velocity sections siberian platform central asian mobile belt baikal rifting in the cenozoic |
| url | https://www.gt-crust.ru/jour/article/view/224 |
| work_keys_str_mv | AT vvmordvinova deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT mmkobelev deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT avtreussov deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT makhritova deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT dstrynkova deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT eakobeleva deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata AT oflukhneva deepstructureofthesiberianplatformcentralasianmobilebelttransitionzonefromteleseismicdata |