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

doi:10.15625/0866-7187/15694

Author affiliations

Authors

Ngo Van Liem VNU University of Science, Vietnam National University, Hanoi, Vietnam
Phan Trong Trinh 1-Institute of Geological Sciences, VAST, Hanoi, Vietnam 2-Graduate University of Science and Technology, VAST, Hanoi, Vietnam 3-Royal Academy for Overseas Sciences, Brussels, Belgium
Tran Van Phong Institute of Geological Sciences, VAST, Hanoi, Vietnam
Vy Thi Hong Lien Institute of Geological Sciences, VAST, Hanoi, Vietnam
Nguyen Van Huong VNU University of Science, Vietnam National University, Hanoi, Vietnam
Nguyen Quang Xuyen Institute of Geological Sciences, VAST, Hanoi, Vietnam
Bui Nhi Thanh 1-Institute of Marine Geology and Geophysics, VAST, Hanoi, Vietnam 2-Graduate University of Science and Technology, VAST, Hanoi, Vietnam
Duong Van Hao Hanoi University of Mining and Geology, Hanoi, Vietnam
Binh Thai Pham University of Transport Technology, Hanoi, Vietnam
Nguyen Van Dung Institute of Geography, VAST, Hanoi, Vietnam
Vu Khac Dang Department of Geography, Hanoi National University of Education, Hanoi, Vietnam
Vu Hoa An Institute of Geophysics, VAST, Hanoi, Vietnam

DOI:

https://doi.org/10.15625/0866-7187/15694

Keywords:

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

Abstract

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.

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