Tectonic setting of volcanic rocks in the Akara Au mine, north-central Thailand using petrochemical and stratigraphic investigations     

Taweewath NAKCHAIYA  Toshio MITZUTA  Daizo ISHIYAMA  Isao TAKASHIMA  Krit WON-IN  Veerasak LUNWONGSA  Punya CHARUSIRI 《地球学报》2009,30(Z1):48-48

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.  相似文献