Abstract
The Coastal Range of eastern Taiwan exposes an accreted Miocene arc and forearc terrane that is overlain by a 5 to 6 km thick sequence of collision-derived Plio-Pleistocene sedimentary rocks. When the Luzon arc collided with the Chinese continental margin, the forearc basin became a collisional basin [here informally named the Coastal Range Collisional Basin (CRCB)], caught between the growing mountain belt and the dying arc. In the CRCB sequence, basal mudstones, olistostromes, and pebbly mudstones are overlain by turbidites (mainly thin-bedded fan-fringe and basin-plain facies) and tempestites (widespread shallow-marine, wave-influenced storm deposits). Local channel- and canyon-fill sequences contain abundant cobble-boulder conglomerate, and upper Pleistocene cobbly braided-stream deposits overlie the marine rocks with angular unconformity, dating uplift of the basin. The present Luzon Trough south of Taiwan, which should provide a modern analog for marine deposits of the CRCB, is notably lacking in broad shallow shelf areas corresponding to widespread shallow-water facies of the Plio-Pleistocene sequence. This suggests that early stages of the collision produced less dramatic subsidence than does the present propagation of the collision to the south.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
