Structural Geology of D-pit at Akara Mining, Pichit Province, North Central Thailand
Article Sidebar
Main Article Content
Abstract
D-pit, the mineralization zone at Chatree epithermal gold deposits, is located on Loei-PetchabunChanthaburi volcanic belt of Pichit Province, North Central Thailand. This belt has been related to palaeo-oceanic plate and the Indochina terrene subduction causing the gold mineralization structure. The purpose of this study is to analyze the geologic structural data from core-logging and field mapping. Rocks and geologic structures include breccia vein, massive vein, dyke, joint and shear zone inferring the age from older to younger, respectively. Main structures consists the two trends in the NNW-SSE and N-S. Dykes show the N-S major trending and NE-SW minor trend conform with the NE-SW strike-slip fault within Chatree gold mine. Joint developed throughout whole rock units also with N-S trending. The entire structures have major trending in N-S which indicates maximum stress (σ1) performs in N-S direction. Sinistral shear zone with dextral shear fracture and sinistral shear fracture indicated σ1 performed in NW-SE direction which is concerned by Riedal shear. Sequences of deformation indicated σ1 performed in N-S direction and changed to NW-SE direction causing the difference in pattern of geological structures during the subduction in Permo-Triassic period.
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright © 2008 Department of Geology, Faculty of Science, Chulalongkorn University. Parts of an article can be photocopied or reproduced without prior written permission from the author(s), but due acknowledgments should be stated or cited accordingly.
References
Charusiri, P., Daorerk, V., Archibald, D., Hisada, K., Ampaiwan, T., 2002. Geotectonic evolution of Thailand: A new systhesis. Journal of the Geological Society of Thailand, 1, 1-20.
Diemar, M.G., Diemar, V.A., 1999. Geology of the Chatree Epithermal Gold deposit, Thailand. In Weber, G. (ed.), Proceedings of International Congress on Earth Science, Exploration and Mining Around the Pacific Rim, PACRIM’99, Bali, Indonesia, p. 227-231.
Diemar, M.G., Diemar, V.A., Udompornwirat, S., 1999. The Chatree Epithermal Gold-Silver Deposit, Phichit-Phetchabun Provinces, Thailand. In Khantaprab, C. (ed.), Proceedings of Symposium on Mineral, Energy, and Water Resources of Thailand: Towards the Year 2000, Bangkok, Thailand, p. 423-428.
James, R., Cumming, G.V., 2007. Geology and mineralization of the chatree epithermal Au-Ag deposit, Phetchabun province, Central Thailand. In Tantiwanit, W. (ed.), Proceedings of the International conference on geology of Thailand: Towards Sustainable Development and Sufficiency Economy, GEOTHAI’07, Bangkok, Thailand, p. 378-390.
Kromkham, K., Zaw, K., 2005. Geological Setting, Mineralogy and Alteration of the H Zone, the Chatree Deposit, central Thailand. In Wannakao, L., Srrsuk, K., Youngme, W., Lertsirivorakul, R. (eds.), Proceeding of the International Conference on Geology, Geothecnology and Mineral Resource of INDOCHINA, 47 GEOINDO 2005, Khon Kaen, Thailand, p. 319-323.
Tangwattananukul, L., Lunwongsa, W., Mitsuta, T., Ishiyama, H., Takashima, I., Won-In, K., Charusiri, P., 2008. In Choowong, M., Thitimakorn, T. (Eds.), Proceedings of the International Symposium on Geoscience Resources and Environments of Asian Terranes, GREAT 2008, Bangkok, Thailand, p. 299-301.