en
Scientific article
English

New insights into the Triassic sedimentary environment of the eastern parts of the Song Da and Sam Nua basins alongside the Indosinian Song Ma suture, Northern Vietnam

Published inJournal of Asian Earth Sciences, vol. 187, no. 104067
Publication date2020
Abstract

This study documents the sedimentology, structures, and foraminifer content of Triassic formations from the eastern part of the Truong Son Belt (Northern Vietnam). Sedimentary rocks in the eastern Song Da and Sam Nua basins occur on both sides of the Middle Triassic Song Ma suture zone that separates the Indochina Block from the South China Block. The main outcomes of our study include detailed stratigraphic successions that we have established for the two basins. New foraminifer determinations indicate a Middle to Late Triassic age for the carbonate deposition. The depositional settings of the carbonate deposits and their deformation patterns support a southward “subduction” beneath the Indochina Block, ending with the collision with the South China Block during the Middle Triassic. Moreover, our new biostratigraphic dating of the stratigraphic successions can be used to compare the Triassic carbonate platforms from Northern Vietnam with other platforms elsewhere, including those that have already been well documented in Indonesia.

Keywords
  • Stratigraphy
  • Foraminifers
  • Sedimentology
  • Carbonate platforms
  • Indosinian orogeny
  • Northern Vietnam
Citation (ISO format)
VILLENEUVE, Michel et al. New insights into the Triassic sedimentary environment of the eastern parts of the Song Da and Sam Nua basins alongside the Indosinian Song Ma suture, Northern Vietnam. In: Journal of Asian Earth Sciences, 2020, vol. 187, n° 104067. doi: 10.1016/j.jseaes.2019.104067
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal1367-9120
513views
2downloads

Technical informations

Creation10/27/2019 4:57:00 AM
First validation10/27/2019 4:57:00 AM
Update time03/15/2023 6:15:25 PM
Status update03/15/2023 6:15:24 PM
Last indexation01/17/2024 6:38:55 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack