Tuesday, 28 August 2007
2.PS-32
Magnetic anomalies in East Antarctica: application to definition of major tectonic provinces
A.V. Golynsky, VNIIOkeangeologia, 1, Angliysky Avenue, St. Petersburg, 190121, Russia
Abstract Analysis of the aeromagnetic data compiled within the Antarctic Digital Magnetic Anomaly Project (ADMAP) and all available geologic information allow to determine boundaries between major tectonic provinces of East Antarctica and to recognize several previously unknown crustal blocks in the deep interior of the continent, which considered as cratonic nuclei. These cratons are fringed by a large and continuous orogen that identified between Coats Land and Princess Elizabeth Land with branches in deep interior. Most of the crustal provinces and boundaries identified in this study are only in part exposed, therefore the outline of these crustal provinces in detail, successive refinement of their sub-ice structures and boundaries require the acquisition of additional high-resolution magnetic data, because at present the ADMAP database is largely inadequate to address many of Antarctica’s immediate concerns to know more about our planet’s crust.