Events & Courses

The entire Malaysian Peninsula was resampled and 40 samples were collected for high-precision U-Pb SIMS dating on extracted zircon grains in order to better constrain the magmatic and tectonic evolution of Southeast Asia. The crystallization ages of the Eastern Province granitoids have been constrained ranging from 220 to 290 Ma, while the Main Range (Western) Province granitoids have ages ranging from 200 to 230 Ma.

A progressive westward younging trend is apparent across the Eastern Province, but becomes less obvious in the Main Range Province. Our model suggests two east dipping subduction zones. We suggest that subduction roll-back along the Bentong-Raub suture might account for the westward younging trend, in the Eastern province.

A second Late Triassic east-dipping subduction zone beneath western Malaysia is proposed in order to explain the “I-type” components to the Main Range Province granitoids.

Time

6:30pm to 7:30pm

Venue

JL104, James Lee Building,
The University of Hong Kong (HKU)

Cost

Free of charge