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Geochemistry and geochronology of the Chatree epithermal gold-silver deposit: Implications for the tectonic setting of the Loei Fold Belt, central Thailand

journal contribution
posted on 2023-05-18, 01:26 authored by Salam, A, Khin ZawKhin Zaw, Sebastien MeffreSebastien Meffre, Jocelyn McPhieJocelyn McPhie, Lai, C-K
The Chatree deposit is the largest epithermal Au deposit in mainland SE Asia. Despite its economic significance, the stratigraphy, age, geochemistry and tectonic setting of the host volcanic sequence is poorly documented in the literature. The Chatree deposit is located between Phichit and Phetchabun provinces, central Thailand, and is hosted by Late Permian to Early Triassic volcaniclastic and volcanogenic sedimentary rocks. Detailed field mapping, U-Pb zircon dating, geochemistry and stratigraphy suggest that the volcanic sequence can be subdivided into four stratigraphic units and two volcanic suites. The Late Permian Suite 1 volcanic units are sourced from a more depleted mantle relative to the overlying Early Triassic Suite 2 volcanic units. The Late Permian Suite 1 units probably formed immediately after the beginning of subduction and at the creation of a new island arc. The less depleted Early Triassic Suite 2 units were erupted during ongoing subduction once the system had achieved a steady state. The Chatree Au mineralization appears to have occurred during the switch between the two mantle sources and this switch of magma source is marked by a mixed volcano-plutonic magmatism at the Permo-Triassic boundary (ca. 250 Ma).


Publication title

Gondwana Research








School of Natural Sciences


Int Assoc Gondwana Research

Place of publication

Kochi Univ, Faculty Science Akebono-Cho 2-5-1, Kochi, Japan, 780-8520

Rights statement

Copyright 2013 International Association for Gondwana Research.

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  • Restricted

Socio-economic Objectives

Precious (noble) metal ore exploration