Zircon U–Pb geochronology and Hf isotopic compositions of igneous rocks from Sumatra: implications for the Cenozoic magmatic evolution of the western Sunda Arc

Yu-Ming Lai, Ping-Ping Liu, Sun-Lin Chung, Azman A. Ghani, Hao-Yang Lee, Long Xiang Quek, Shan Li, Muhammad Hatta Roselee, Sayed Murtadha, Lediyantje Lintjewas & Yoshiyuki Iizuka
Sumatra is located at the western end of the Sunda Arc, which resulted from the subduction of the Indo-Australian Plate beneath the Eurasian Plate. In this study, we report detailed zircon U–Pb and Hf isotope data for Cenozoic igneous rocks from the entire island of Sumatra to better constrain the temporal and spatial distribution of arc magmatism. The new dataset, combined with literature information, identifies the following two magmatic stages: (1) Paleocene to Early Eocene...
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