Geology of Kanchanaburi and Suphanburi – Thailand
International - Date: 18th – 21st November/2017
The Sibumasu block consists of high-grade metamorphic rocks (gneiss, schist, calcsilicate and marble) and sedimentary rocks which are inferred to be of Pre-Cambrian age, overlain by folded units from the Paleozoic and Mesozoic. There are abundant outcrops of Late Carboniferous to Early Permian glacial-marine diamictites and cool water fauna fossil bearing limestones, also from Early Permian.
Different tectonic models and field observations indicate that this block collided with the Indochina block during Late Triassic. Located near the suture zone of two different accreted terranes (Sibumasu and Inthanon), the area is important to the comprehension of the Paleozoic-Mesozoic dynamics of western Gondwana and the terranes on its northern margin.
The field trip was part of the Gondwana 16 – Puzzling out Gondwana Conference and was organized by Dr. Prinya Putthapiban, Dr. Dhiti Tulyatid and Mr. Sirot Salyapongse (Mahidol University) and attended by the undergraduate student Igor Vasconcelos Gomes (UFRJ) and graduate student Rafael de Araújo Fragoso (UFRJ), among other participants.