Deep seismic reflection imaging of the Pan-African mobile belt, the

• Main Authors: Lützow-holm Complex, East Antarctica
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Antarctic; East Antarctica; Austral; Dronning Maud Land; Antarc*; Antarctica; Ice Sheet
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.562.4752; http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea180.pdf

Summary The deep structure and evolution of the crust and upper mantle were demonstrated by Deep Seismic Surveys (DSS) in Pan-African terrain of the Lützow-Holm Complex (LHC), Dronning Maud Land, East Antarctica. DSS were conducted on the continental ice-sheet of the LHC in the austral summers of 2000 and 2002, by the "Structure and Evolution of the East Antarctic Lithosphere (SEAL) " program. Detailed processing, based on NMO corrections and CDP stacking, of the DSS data extracted clearer images of reflections of the crust-mantle boundary, together with several crustal reflections. A layered structure at the crust-mantle boundary was clarified by coherency enhancement processing after NMO correction to very far offset data. Crustal structure of the LHC imaged by seismic reflections suggests the tectonic influence of compression stress in a NE-SW orientation during the Pan-African, during the last stage of formation of broad mobile belt between East and West Gondwana super-terrains.