Plate Tectonic History of the Indian Ocean ...

• Main Author: Magloire Francois Fabien
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Zenodo 2023
• Subjects: East Antarctica; Indian; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.5281/zenodo.10029240; https://zenodo.org/doi/10.5281/zenodo.10029240

The fragmentation history of East-Gondwana is divided in five periods, each period being preceded by mid-oceanic ridge closings and jumps. These plate movements were controlled by three branches of convection currents (CC): the western, the central and the eastern ones. Period 1 began with the rise of compressional constraints in the Neo-Tethys region caused by the anticlockwise rotation of East- Antarctica/Australia as the interaction effect with the newly formed off-South African E-W CC at M10. This led to the northward detachment of continental fragments from Northwest Australia and northeast India, the creation of an oceanic basin north of India and the spreading cessation of the Somali Basin at M0. Period 2 was marked by southward ridge jumps from the Somali Basin and the north of India. The influence of the E-W CC ended after the Lower Aptian fan-like rifting between India and Sri Lanka. From then on, plate movements occurred in N-S direction and the rotation of East-Antarctica/Australia got reversed. ...