首页|Tectonic Conditions of the Origin and Geodynamic Setting of the Opening of the Red Sea and Gulf of Aden Rifts
Tectonic Conditions of the Origin and Geodynamic Setting of the Opening of the Red Sea and Gulf of Aden Rifts
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The paper presents the results of a study that allow us to identify tectonic conditions responsible for the origin of Late Cenozoic rifts at the final stage of the development of the Red Sea and the Gulf of Aden. The rifts, adjacent at a right angle, are at different stages of oceanic opening. We propose a geodynamic model of Red Sea rift development, based on data on the continental-lower crustal nature of the high-density basement of this rift. Our paleotectonic reconstructions support the previous model of the prerift location of Arabia near the "shores" of Africa and the deep entry of the Yemen "Corner" of Arabia into the "Triangle" of the Afar Depression. The separation and synrift removal of Arabia from Africa occurred in different and unique tectonic settings. The Red Sea Rift originated in the largest area of the Late Proterozoic juvenile crust protruding in the central part of the Arabian-Nubian Shield. In contrast, the Gulf of Aden Rift formed within a large pericontinental sedimentary basin, which is unusual for rifts of all ages and types. The direction of the rift detachment of Arabia from Africa is predetermined historically and coincides with the boundaries of ancient lithospheric blocks that experienced different tectonic development. These geological boundaries, related to the deep interfaces, are outlined in the crustal structure as Pan-African fold belts of various ages and types.
geologylithospheric platesgeodynamic modelpaleocontinentsrifts of the Red Sea and the Gulf of AdenAfrican superplumepaleotectonic reconstructions
V. M. Usova
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People's Friendship University of Russian, Moscow, 117198 Russia
NETL
NSTL
Pleiades Publishing Inc
