On the geology of the Petchabun Fold-Belt (Central Thailand) - implications on the geodynamic evolution of Mainland S.E. Asia


Author : Dietrich HelmckePublication : Bulletin of the Geological Society of MalaysiaVolume : 19Page : 79 – 85Year : 1986


Description

Bulletin of the Geological Society of Malaysia, Volume 19, April 1986, pp. 79 – 85

 

On the geology of the Petchabun Fold-Belt (Central Thailand) - implications for the geodynamic evolution of Mainland S.E. Asia

DIETRICH HELMCKE

Freie Universitat Berlin, Wichernstrasse 16, D-1000 Berlin 33.

 

Abstract: Investigations in the Petchabun fold and thrust belt (Central Thailand) revealed a Permian succession indicative of a Late Variscan (Permian) orogeny. These data do not fit into the attractive plate-tectonic scenario of an Upper Triassic continent/continent-collision between the Indosinia Craton and the Shan-Thai Craton but require the model of an extensive Late Variscan orogen. Preliminary data from the region of Uttaradit (Northern Thailand) indicate that the main orogenic event, which is accompanied by low grade metamorphism, occurred already during the Upper Devonian-Lower Carboniferous in this region. The data prove that this orogen has a complicated and long lasting history. The information provides some constrains on the much discussed Gondwana connection of the Shan-Thai Craton.

https://doi.org/10.7186/bgsm19198607