The Ukrainian Antarctic expeditions provided new geophysical data for many West Antarctica bottom structures. Gravity, magnetic- and electromagnetic profile measurements that crossed the transition zone from a passive to an active continental margin of Antarctica enabled to specify the formation age of some blocks and separate local crustal inhomogeneities of Bransfield Strait. Similar results obtained by three different methods assure the notable magmatic dynamism of Bransfield Trough that forms in the conditions of structural transformations and rifting processes migrating NE-SW along Bransfield Strait. It is quite probable that this area is dominated by diffusion tension process but not only the expansion of a mid-oceanic ridge in the back of a volcanic arc. Great effect of tectonic factors influence on sediment formation (up to 2,5km thick) and existence of some intrusions and tectonically active fracture zones in Drake Passage has been detected early. Modeling experience of deep crust structure by geophysical data with VERS method shows that there is a possibility to investigate the fluid regime, tectonic disturbances, crush zones in basement and local places of submarine volcanic activity too.
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