Preserved collisional crustal structure of the southern Urals revealed by vibroseis profiling

被引:104
作者
Echtler, HP
Stiller, M
Steinhoff, F
Krawczyk, C
Suleimanov, A
Spiridonov, V
Knapp, JH
Menshikov, Y
AlvarezMarron, J
Yunusov, N
机构
[1] SPETSGEOFIS,MOSCOW 107140,RUSSIA
[2] CORNELL UNIV,INST STUDY CONTINENTS,ITHACA,NY 14853
[3] BAZHENOV GEOPHYS EXPEDIT,SCHEELITE 624051,RUSSIA
[4] CSIC,INST CIENCIAS TIERRA,E-08028 BARCELONA,SPAIN
[5] BASHNEFTEGEOFIZ,UFA 450000,RUSSIA
关键词
D O I
10.1126/science.274.5285.224
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The vibroseis reflection profiling component of the URSEIS '95 experiment provides a high-resolution crustal-scale image of the unextended southern Uralide orogen. A marked lateral and vertical variation of reflectivity throughout the entire crust differentiates the former margin of the East European craton to the west from accreted terranes to the east. Between these regions is a less reflective zone corresponding to the Magnitogorsk volcanic are and the crustal root zone. Continuous reflections and reflective domains that correlate at the surface with major tectonic features define a bivergent orogen in which the Paleozoic collisional structure has been largely preserved.
引用
收藏
页码:224 / 226
页数:3
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