Pliocene - present tectonics and strain rate in Ninh Thuan region and surrounding continental shelf

Ngo Van Liem, Phan Trong Trinh, Tran Van Phong, Vy Thi Hong Lien, Nguyen Van Huong, Nguyen Quang Xuyen, Bui Nhi Thanh, Duong Van Hao, Binh Thai Pham, Nguyen Van Dung, Vu Khac Dang, Vu Hoa An


In this paper, we present detail data of Pliocene - present tectonics and strain rate from GPS measurement and seismic interpretation. Using international reference frame ITRF08, we revealed absolute tectonic velocities of GPS sites with the slip rate to the east between 22 to 25 mm/year, to the south between 4 to 8 mm/year. The present strain rate was determined from present tectonic velocities that were consistent with the recent strain rates determined from seismic profiles, thickness of Pliocene - Quaternary sediments. Present day strain rate varying from 10 to 30 nano per year indicated that the region has been deformed weakly, in a stable tectonic regime.


Present day tectonics, GPS, strain rate, tectonic gradient, seismic profiles, continental shelf


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