The lithospheric structure of the Central and Southern Tien Shan: MTS data correlated with petrology and laboratory studies of lower-crust and upper-mantle xenoliths

Batalev V.Y.U.; Bataleva E.A.; Egorova V.V.; Matyukov V.E.; Rybin A.K.

doi:10.1016/j.rgg.2011.11.005

Инд. авторы:	Batalev V.Y.U., Bataleva E.A., Egorova V.V., Matyukov V.E., Rybin A.K.
Заглавие:	The lithospheric structure of the Central and Southern Tien Shan: MTS data correlated with petrology and laboratory studies of lower-crust and upper-mantle xenoliths
Библ. ссылка:	Batalev V.Y.U., Bataleva E.A., Egorova V.V., Matyukov V.E., Rybin A.K. The lithospheric structure of the Central and Southern Tien Shan: MTS data correlated with petrology and laboratory studies of lower-crust and upper-mantle xenoliths // Russian Geology and Geophysics. - 2011. - Vol.52. - Iss. 12. - P.1592-1599. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2011.11.005; SCOPUS: 2-s2.0-82955190397;
Реферат:	eng: Magnetotelluric soundings (MTS) in the Kyrgyz Tien Shan along 74° and 76° E profiles reveal conductors in the crust which delineate the boundaries of the At-Bashi accretionary-collisional zone and the Issyk-Kul microcontinent. Correlated to earthquake converted-wave patterns (vP) along the MANAS profile collected in 2007, the geoelectric model for the At-Bashi zone lends support to the hypothesis that the position and dip of large thrust sheets, as well as the way and direction of exhumation of eclogites in this zone, are similar to those in Northwest China. Petrological analysis, geothermobarometry, and elastic P-wave velocities measured in laboratory on lower-crust and upper-mantle xenoliths indicate that at the time when the xenoliths were dragged to the surface about 70 Ma ago, the Moho was 20 km shallower than now (35 km against 55 km) and the heat flux was 20 mW/m2 higher (80 against 60 mW/m2). © 2011.
Ключевые слова:	Tien Shan; Tarim Basin; China; xenolith; upper mantle; seismic velocity; petrology; magnetotelluric method; lower crust; lithospheric structure; laboratory method; Xinjiang Uygur; geobarometry; collision zone; accretionary prism; Tien Shan; Tarim; Seismic velocities; Magnetotelluric soundings (MTS); Issyk-Kul microcontinent; Geothermobarometry; Crustal conductors; At-Bashi accretionary-collisional zone; geoelectric field;
Издано:	2011
Физ. характеристика:	с.1592-1599