Faults in Southern Vietnam - implications for extrusion of Indochina

Published: 24 December 2020| Version 1 | DOI: 10.17632/h4v7srkpc2.1
Contributors:
Caroline M Burberry,
Lynne J Elkins,
N Hoang

Description

These data include structural measurements of faults in southern Vietnam, including slickenside measurements where possible. Fault data are given as strike and dip, reported in the right hand rule convention, collected over two field campaigns using a Brunton compass. A second file is lineament data generated from ArcMap, given as strike of lineaments and separated into blocks, to enable Figure 5 in the associated paper to be reproduced. Lastly, we archive the geochemical dataset from the Ar-Ar dating of a key sample from the OSU Argon Geochronology Laboratory. We find that fault and lineament orientations in different lithospheric-scale, fault-bounded blocks are distinct from one another, implying that the different blocks are moving discretely with respect to one another. We suggest that this disintegration of southern Vietnam into smaller blocks is a natural result of continued extrusion where a free surface is no longer present.

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