Dating Tectonism in the Indosinian–Thai–Malayan Orogen by Thermoluminescence

Hutchison, C.S. (1968) Dating Tectonism in the Indosinian–Thai–Malayan Orogen by Thermoluminescence. Geological Society of America Bulletin, 79 (3). pp. 375-386. ISSN 0016-7606

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Official URL: https://doi.org/10.1130/0016-7606(1968)79[375:DTIT...

Abstract

The thermoluminescence "ages" of a large and representative selection of limestone specimens from the Thai-Malayan geosyncline, ranging in stratigraphic age from Ordovician to Triassic, are related, not to stratigraphic age, but to tectonic and magmatic events in the Mesozoic Indosinian-Thai-Malayan orogeny. It is deduced that the revolutionary phase of the orogeny extended from early Triassic to early Cretaceous; folding of the geosynclinal sediments and accompanying recrystallization of the limestones terminated in late Jurassic, but granitic activity extended to early Cretaceous. A post-orogenic phase of granitic intrusion, accompanied by secondary calcite veining of the limestones, occurred in early Tertiary and appears to be confined to a narrow zone along the western margins of the Main Range batholith. The thermoluminescence "ages" indicate that the revolutionary phase of the orogeny extended over a period of approximately 150 million years, which is in agreement with the radiometric ages of Malayan orogenic granites. © 1968, The Geological Society of America, Inc.

Item Type: Article
Uncontrolled Keywords: Calcite; Lime; Limestone; Stratigraphy
Subjects: Q Science > Q Science (General)
Q Science > QE Geology
Divisions: Faculty of Science > Dept of Geology
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Nov 2020 02:01
Last Modified: 02 Nov 2020 02:01
URI: http://eprints.um.edu.my/id/eprint/25598

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