Tectonic setting of volcanic rocks in the Akara Au mine, north-central Thailand using petrochemical and stratigraphic investigations |
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| Authors: | Taweewath NAKCHAIYA Toshio MITZUTA Daizo ISHIYAMA Isao TAKASHIMA Krit WON-IN Veerasak LUNWONGSA Punya CHARUSIRI |
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| Affiliation: | Earthquake and Tectonic Geology Research Unit (EATGRU), c/o Department of Geology, Faculty of Science,Chulalongkorn University, Bangkok 10330 Thailand;Bureau of Geology, Department of Mineral Resources, Bangkok 10400 Thailand;Department of Applied Geosciences, Faculty of Engineering and Resource Science, Akita University,Akita 0108502 Japan;Department of Applied Geosciences, Faculty of Engineering and Resource Science, Akita University,Akita 0108502 Japan;Department of Applied Geosciences, Faculty of Engineering and Resource Science, Akita University,Akita 0108502 Japan;Department of Geoscience, Faculty of Science, Kasetsart University, Bangkok 10900 Thailand;Isara Exploration and Production Company, Akara Mine, Pichit 66150 Thailand;Earthquake and Tectonic Geology Research Unit (EATGRU), c/o Department of Geology, Faculty of Science,Chulalongkorn University, Bangkok 10330 Thailand |
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| Abstract: | Akara gold mine in north-central Thailand is situated within the Loei-Phetchabun-Nakhon Nayok volcanic belt. The roughly north-south trending, Permo-Triassic volcanic rocks earlier mapped by Thailand Department of Mineral Resources were re-mapped and samples were collected from the main active open pit. Forty-four samples were petrographi-cally classified and geochemically analyzed to docu-ment their stratigraphy. Two types of volcanic rocks are recognized, namely coherent and non-coherent units, in which the former is older on the basis of stratigraphic succession. Several lines of evidence suggest that the studied rocks occurred nearby the volcanic edifices and were dominated by debris flows of submarine environment. |
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| Keywords: | Tectonic Volcanic Akara Thailand Subduction |
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