Late Pleistocene-Holocene sedimentary evolution in the coastal zone of the Red River Delta

Abstract

The Red River Delta is considered one of the largest megadelta systems in Asia. The formation of this delta has been controlled by the continent-ocean interaction and sea-level fluctuation during the Cenozoic. In this study, we present a new sequence stratigraphic framework of the Red River Delta based on borehole lithofacies analysis and high resolution seismic data. The Late Pleistocene-Holocene sediments in the coastal zone of the Red River Delta were subdivided into three systems tracts: (1) the lowstand systems tract (LST) is characterized by a Late Pleistocene alluvial silty sand facies complex (arLSTQ 1 3b ); (2) the transgressive systems tract (TST) is illustrated by the coastal marsh facies complex and the lagoonal greenish-gray clay facies of Early-Middle Holocene (amt, mtTSTQ 2 1À2); and (3) the highstand systems tract (HST) is composed of the Middle-Late Holocene deltaic clayish silt facies complex (amhHSTQ 2 2À3). The boundaries between these three systems tracts are not isochronous, namely: (1) The LST-HST boundary has been associated with the Würm 2 Glaciation, which occurred at~40-18 Ka.; (2) The TST-LST boundary is identified by a transgressive erosion surface, whose age ranges from~12-5 Ka.; and (3) the HST-TST boundary is an unconformity between the submarine deltaic facies complex and the Middle Holocene marine flooding plain.

The Influence of Financial Indicators on Vietnamese Enterprise’s Sustainability Reports Disclosing Process

“…While prior studies have predominantly explored the influence of sustainability reporting on financial performance (sustainability reporting → AT), the current study seeks to complement this literature by investigating the reverse relationship. By examining how financial indicators drive sustainability reporting practices, this research aims to provide valuable insights into the mechanisms underlying corporate disclosure decisions and their implications for sustainable development in Vietnam (Wang and Liang 2024;Yen et al 2021).…”

Coastal Erosion Caused by River Mouth Migration on a Cuspate Delta: An Example from Thanh Hoa, Vietnam

“…The determination of the formation time (t) draws upon the research conducted by Yen et al [39]. It is worth noting that while the investigation of Yen et al [39] focused on the Red River delta, it also included a map encompassing the neighboring Ma River delta.…”

“…The determination of the formation time (t) draws upon the research conducted by Yen et al [39]. It is worth noting that while the investigation of Yen et al [39] focused on the Red River delta, it also included a map encompassing the neighboring Ma River delta. This map provides distinct evidence that the historical shoreline positions in the Late Holocene originated between 500 and 200 years Before Present (BP).…”

Coastal Erosion Caused by River Mouth Migration on Cuspate Delta: An Example from Thanh Hoa, Vietnam

“…The determination of the formation time (t) draws upon the research conducted by Yen et al [36]. It is worth noting that while Yen et alʹs [36] investigation focuses on the Red River delta, it also includes a map encompassing the neighboring Ma River delta.…”

“…The determination of the formation time (t) draws upon the research conducted by Yen et al [36]. It is worth noting that while Yen et alʹs [36] investigation focuses on the Red River delta, it also includes a map encompassing the neighboring Ma River delta. This map provides distinct evidence that the historical shoreline positions in the Late Holocene originated between 500 to 200 years Before Present (BP).…”