Neogene sediment thickness and Miocene basin-floor fan systems of the Celebes Sea |
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| Institution: | 1. Philippine Institute of Volcanology and Seismology - Department of Science and Technology (PHIVOLCS-DOST), PHIVOLCS Bldg., C. P. Garcia Avenue, University of the Philippines Campus, Diliman, Quezon City 1101 Philippines;2. Department of Geophysics, Kyoto University, Kitashirakawa-oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan;1. Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia;2. Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia;3. Graduate School of Oceanography, University of RI, Narragansett 02882-1197, USA;4. Department of Geological Sciences, Brown University, Providence 02912, USA;5. Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia;6. Faculty of Teaching and Educational Sciences, Haluoleo University, Kendari 93231, Indonesia;2. Im Waldwinkel 8, D-14662 Friesack, Germany |
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| Abstract: | In the Celebes Sea Basin the Middle Miocene turbidites were correlated from ODP site 767 throughout the studied area. Differences in their regional thickness variations and distribution indicate two source areas. The Middle Miocene turbidite–fan complexes of the central and southern Celebes Sea Basin are controlled by the paleo-Tarakan delta system, the tectonic events and the basin floor morphology, respectively. The main source area for the time correlative turbidites along the southern Sulu Arc is assumed to be Mindanao.The correlation of the Middle Miocene to Pleistocene sequences exhibit tentative ages for the development of the accretionary wedges along the Cotabato Trench and along the North Sulawesi subduction. A post-Middle Miocene to pre-Pliocene age is inferred for the Cotabato wedge and a Plio-Pleistocene age is assumed for the North Sulawesi wedge. |
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