530 CANCELED Geodynamic History of the Middle Part of the Alpine-Himalayan Orogenic Belt.
The Middle East area is situated in the central part of the Alpine-Himalayan Orogenic Belt. The geodynamic history of this area is considered from the beginning of Gondwana crust consolidation. The oldest crust with its oldest stratigraphic sequences has been affected by two great orogenic events in this region. The first one is due to the continent-continent collision between Mega Lhasa, which was drifted from Gondwana, and the southern part of Eurasia during Middle Triassic (Cimmerian Orogeny). The second event is the migration of the Arabian Plate toward the east, which collided with the Iranian Block (Alpine Orogeny). The subduction of Neo-Tethyian caused a crustal thinning during the Middle Cretaceous with an instability period in the Neo-Tethys Basin. Breaking of the Iran Block during the Cretaceous and creation of an inner oceanic basins as Sistan-Baluch, Sabzevar-Nain, and Nain-Baft is a unique geodynamic event within the Neo-Tethys Ocean. The Miocene is the period of the last shortening and deformation of this part of the Alpine-Himalayan Belt. The geodynamic history of this region has not ended yet. At the present time, in the southern part of Makran Accretionary Prism, the subduction of Neo-Tethyian is continuing in the seabed of Oman Sea. This is one of the youngest orogenic events in the world.
Saturday, 9 October 2021
9:00 AM - 5:00 PM
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