Southeast Asian marginal basins (South China, Sulu and Celebes seas); new data and interpretations

Author(s): Rangin, Claude
Author Affiliation(s): Primary:
Pierre and Marie Curie University, Department of Geology, Paris, France
Volume Title: Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP); 25th anniversary volume of CCOP Technical Publication Series
Volume Author(s): Balce, G. R., prefacer
Source: The Office of the Project Manager/Co-ordinator, UNDP Technical Support for Regional Offshore Prospecting in East Asia; United Nations, Economic and Social Commission for Asia and the Pacific [Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP); 25th anniversary volume of CCOP Technical Publication Series, prefaced by G. R. Balce. CCOP/TP, No.CCOP/TP 24, p.156-174. Publisher:], [Bangkok], International. ISSN: 0252-5720
Note: In English. 38 refs.; illus., incl. sketch maps
Summary: The geodynamic evolution of the Southeast Asian marginal basins is discussed on the basis of recent results of scientific drilling (ODP) and geophysical cruises in these basins as well as geologic data collected along their margins. The Celebes and South China seas were rifted from the Asian continental margin during the Paleogene. The present completely-subducted proto-South China Sea probably has the same origin. Opening of these basins resulted partly from the Indo-Asian collision and partly from slab-pull forces along the Sunda trench. During the Neogene, collision of the Sula block with the southern margin of the Celebes Sea in Sulawesi forced progressive closure of these SE Asian basins. The proto-South China Sea was the first to subduct below the Cagayan ridge in early Neogene time, inducing the opening of the Sulu Sea, and spreading reorganisation in the South China Sea. Following collision of the Cagayan ridge with the rifted margin of the South China Sea in early Miocene time, the Sulu Sea initiated its subduction along the Sulu archipelago, the Celebes Sea along the North Sulawesi trench, while intraplate shortening was registering in northern Borneo. Incipient shortening is also recorded along the axis of the South China Sea. The Paleogene was a period of intense stretching of the Eurasian margin and opening of marginal basins, while the Neogene corresponds to the progressive subduction of these oceanic basins.
Year of Publication: 1991
Research Program: ODP Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; Asia; Basin analysis; Basins; Celebes Sea; Equatorial Pacific; Indonesian Seas; Leg 124; Marginal basins; Models; North Pacific; Northwest Pacific; Ocean Drilling Program; Ocean basins; Offshore; Pacific Ocean; Petroleum; Petroleum exploration; Plate tectonics; Rifting; Sedimentary basins; South China Sea; Southeast Asia; Sulu Sea; Tectonics; West Pacific
Coordinates: N044727 N084709 E1234015 E1204046
Record ID: 2015062033
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute.