Structural controls on the occurrence and morphology of karstified assemblages in northeastern Vietnam: a regional perspective

Karstified assemblages occur widely in, and distinctively shape, the geological landscape of the northeastern part of Vietnam. These carbonate rocks were deposited during three major periods of basinal evolution including: (1) Late Cambrian, (2) Early Devonian to Early Carboniferous, and (3) Carboni...

Full description

Saved in:
Bibliographic Details
Published in:Environmental earth sciences 2013-09, Vol.70 (2), p.511-520
Main Authors: Thanh Tran, Hai, Van Dang, Bat, Kim Ngo, Chi, Dinh Hoang, Que, Minh Nguyen, Quyen
Format: Article
Language:English
Subjects:
Biogeosciences
Cambrian
Carbonate rocks
Carboniferous
Devonian
Earth and Environmental Science
Earth Sciences
Environmental Science and Engineering
Geochemistry
Geological structures
Geology
Geomorphology
Groundwater
Hydrogeology
Hydrology/Water Resources
Morphology
Natural resource management
prediction
Sedimentary geology
Sedimentary structures
Special Issue
Stratigraphy
Studies
Terrestrial Pollution
Triassic
Water resources
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Karstified assemblages occur widely in, and distinctively shape, the geological landscape of the northeastern part of Vietnam. These carbonate rocks were deposited during three major periods of basinal evolution including: (1) Late Cambrian, (2) Early Devonian to Early Carboniferous, and (3) Carboniferous to Earliest Triassic. These sedimentary units contain primary sedimentary structures and have undergone numerous post-depositional geological processes including multiple deformational events, which can be regionally correlated. Several thrusting events and associated folding have led to significant thickening of the carbonate units. The subsequent post-thrusting cross-folding events, followed by several phases of brittle faulting and fracturing further modified the spatial geometry and outcrop of these rocks. The combination and interaction of the primary structures with those formed during the long-lived and complicated deformational history is an important controlling factor in local and regional hydrogeological systems in the region. The geological structures now recorded in the carbonate units ultimately govern the formation of the unique modern surface and sub-surface geomorphology of the karstic terrains in northeastern Vietnam. These structures should be further investigated in the context of water resource assessment and natural hazard prediction and mitigation.
ISSN:1866-6280
1866-6299
DOI:10.1007/s12665-011-1057-1