The formation of these units and surfaces is related to the global sea-level change in Late Pleistocene-Holocene. SB1, defined as the sequence boundary, was generated by subaerial processes during the Late Pleistocene regression and could be remolded partially or significantly by transgressive ravinement processes subsequently. | Vietnam Journal of Earth Sciences, 40(3), 271-287, Doi: Vietnam Academy of Science and Technology Vietnam Journal of Earth Sciences (VAST) Late Pleistocene-Holocene sequence stratigraphy of the subaqueous Red River delta and the adjacent shelf Nguyen Trung Thanh1, Paul Jing Liu2, Mai Duc Dong1, Dang Hoai Nhon4, Do Huy Cuong1, Bui Viet Dung3, Phung Van Phach1 , Tran Duc Thanh4, Duong Quoc Hung1, Ngo Thanh Nga5 1 Institute of Marine Geology and Geophysics (VAST), Hanoi, Vietnam Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA 3 Vietnam Petroleum Institute, 173-Trung Kinh, Hanoi, Vietnam 4 Institute of Marine Environment and Resources (VAST), Hai Phong, Vietnam 5 Institute of Geography (VAST), Hanoi, Vietnam 2 Received 22 February 2018; Received in revised form 02 May 2018; Accepted 05 June 2018 ABSTRACT The model of Late Pleistocene-Holocene sequence stratigraphy of the subaqueous Red River delta and the adjacent shelf is proposed by interpretation of high resolution seismic documents and comparison with previous research results on Holocene sedimentary evolution on the delta plain. Four units (U1, U2, U3, and U4) and four sequence stratigraphic surfaces (SB1, TS, TRS and MFS) were determined. The formation of these units and surfaces is related to the global sea-level change in Late Pleistocene-Holocene. SB1, defined as the sequence boundary, was generated by subaerial processes during the Late Pleistocene regression and could be remolded partially or significantly by transgressive ravinement processes subsequently. The basal unit U1 (fluvial formations) within incised valleys is arranged into the lowstand systems tract (LST) formed in the early slow sea-level rise ~ BP, the U2 unit is arranged into the early transgressive systems tract (E-TST) deposited mainly within incised-valleys under the tideinfluenced river to .
