sulu sea basin

The Southeast Sulu Sea is a small oceanic basin that opened in Middle Miocene time in a back-arc setting along the Sundaland margin during subduction of the Celebes Sea plate beneath the Sulu arc. The reprocessing project was conducted in association with MultiClient Geophysical (MCG). Related to Geologic Time, Mineralogy The overall configuration of the Philippine Sea resembles a typical sinistral transpressional “pop-up” structure. Learn about our remote access options, Faculty of Science, Universiti Brunei Darussalam, Gadong, BE1410 Brunei Darussalam, State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China, SE Asia Research Group, Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX UK, Centre for Ore Deposit and Earth Sciences (CODES), University of Tasmania, Tasmania, 7001 Australia, National Institute of Geological Sciences, University of the Philippines Diliman, Philippines, Department of Geological Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia, This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. This back-arc extension post-dates compressive tectonism present in this back arc area in early Middle Miocene time. Since the Sulu Sea is a closed basin below 420m (Kuehl et al 1993), the temperature of the deep water is uniformly near 10 C, (Tizard et al 1884) the phosphate is about 3 microgram-atoms/litre while the nitrate level is 35 microgram-atoms/litre. Planets, Magnetospheric Search for other works by this author on: You do not currently have access to this chapter. The results indicate that the Sulu Basin originated in the late early Miocene (c. 18.8 Ma) in a backarc setting. The Java, Makassar, Celebes and Sulu Seas basins together with grabens in Borneo also comprise a local dextral, transform-margin type basin system similar to the central and southern parts of the Shanxi Basin in geometry. more accurate for those satellite-detected IWs adjacent to. Newly reprocessed multiclient 2D seismic data from the Philippines Sulu Sea and East Palawan Basin are now available. Better sources and more sophisticated processing yielded better and deeper resolution of the data. Geophysics, Geomagnetism Our model suggests that the Sulu Sea was formed by the NW‐dipping Celebes Sea subduction at ∼21 Ma, in response to the collision between the South China‐derived Palawan Continental Terrane and northern Borneo‐SW Philippines. 1993). Northern Borneo underwent intraplate extension and magmatism after ∼9 Ma, and the Sulu Sea subducted along Sulu‐Negros trench from ∼4 Ma. The Sulu Sea is an example of a marginal sea with two distinct basins of different types: (1) the Outer Sulu Sea basin, formed inside an old island arc, the Palawan arc; (2) the Inner Sulu Sea, a basin with an oceanic crust. The area of each basin ranges from 36,000 sq km to 92,000 sq km (Sulu Sea is bigger but it is partly covered by oceanic crust). Similar Borneo basins including the Baram Delta, the North Sabah Basin, the Tarakan Basin, and the Kutei Basin have combined reserves of greater than 10 billion bbls of oil and 35 tcf of gas. and Chemical Oceanography, Physical A garment similar to a sarong, worn by Melanesians, as in the Fiji Islands. Use the link below to share a full-text version of this article with your friends and colleagues. The subduction may have formed arc magmatism (21–18 Ma) in the Cagayan ridge and its continuation in Panay and NE Sabah, and opened the NW Sulu Sea backarc basin through continental crust attenuation. Learn more. By Project Name: By Startdate: By Enddate: By Location: Ventilation History of the Sulu Sea: Record of Abrupt Changes in the Tropical Western Pacific Thermocline: 8/15/17: 7/31/19: What does sulu mean? In the central Philippines, convergence of the Eurasian Plate with the PMB is expressed as a continent (Palawan Microcontinental Block)-arc collision zone. The inactive Palawan Trench marks the subduction boundary between the Palawan microblock and the Spratly Islands plateau of the South China Sea basin. Afterward, to the west of the Sulu Sea, within‐plate extension in northern Borneo occurred and continues to the present‐day; whereas to the east, subduction of the Sulu Sea may have occurred along the Negros‐Sulu trenches, and produced arc volcanism from ∼4 Ma. and Paleomagnetism, History of Working off-campus? To better disseminate new knowledge of continental margins, AAPG held three meetings in 1977 to review the current status of knowledge. After the SCS opening (∼32 Ma) and ridge jump (∼25 Ma), late‐stage Proto‐SCS subduction (24–21 Ma) may have formed the Panay arc andesite and the BABB magmatism in SW Zamboanga peninsula. Oceanography, Interplanetary Processes, Information Please check your email for instructions on resetting your password. southeast Sulu Sea basin crust subducts along the Sulu Trench and the Negros Trench, with the northern termi-nation of the latter lying west of Panay. Basin Fill and Structure Knowledge of continental margins advanced rapidly during the 1970s. RESEARCH PROJECTS BROWSE BY LOCATION Sulu Sea Basin Projects. The western trench system is where the marginal basins (South China Sea, Sulu Sea and the Celebes Sea) of the Eurasian Plate are subducting (Rangin & Pubellier 1990; Ringenbach et al. The data coverage and quality are appropriate for. The papers presented at those meetings are contained in this volume. The Sulu Sea is an example of a marginal sea with two distinct basins of different types: (1) the Outer Sulu Sea basin, formed inside an old island arc, the Palawan arc; (2) the Inner Sulu Sea, a basin with an oceanic crust. Most of the oceanic crust is already subducted. According to the magnetics model, it is likely that the Sulu Sea Basin started to open at 30-35 Ma (early Oligocene) with 0.6 cm/yr half-spreading rate. Log in. Their interaction during Tertiary times resulted in a complex active margin composed of a mosaic of small geotectonic units such as microcontinental blocks, island arcs, and marginal seas. If you have previously obtained access with your personal account, please log in. NW‐dipping Celebes Sea subduction largely ceased after ∼9 Ma, followed by extension‐related uplift/exhumation and 4–0.2 Ma intraplate volcanism in northern Borneo. and you may need to create a new Wiley Online Library account. The four companies that submitted bids were Israel’s Ratio Petroleum Ltd. (Area 3-East Palawan Basin); Sulu Sea Energy Resources Development Corp. (Area 6-Sulu Sea Basin); the partnership of The Philodrill Corp. and PXP Energy Corp. (Area 7-Sulu Sea Basin); and Esmaulana Global Ventures Company, Inc. (Area 6-Sulu Sea Basin). This article is protected by copyright. By continuing to use our website, you are agreeing to our, Cushman Foundation for Foraminiferal Research, Mineralogical Society of Great Britain and Ireland. Objects, Solid Surface The Sandakan basin lies in the southwestern Sulu Sea straddling the Philippines/Malaysia maritime border (Fig. The Sulu Sea region is composed of the East Palawan and the Sulu Sea basins including the sub-basins of Balabac, Bancauan and Sandakan. "The Sulu Sea: A Marginal Basin in Southeast Asia", Geological and Geophysical Investigations of Continental Margins, Joel S. Watkins, Lucien Montadert, Patricia Wood Dickerson. Journal of Geomagnetism and Aeronomy, Nonlinear Recent mag-matic activity related to the Negros trench subduction is however absent from the island, whereas it is well-developed in the neighboring island of Negros (Sajona et al., 2000). establishing a regional geologic framework Multichannel seismic reflection whose cost formerly restricted its use largely to the immediate vicinity of shallow-water prospects has become more common in deeper waters. The use of the technique by government and academic groups helped solve basc structural and evolutionary problems of rocks of the deeper offshrore. Geophysics, Biological After Palawan Continental Terrane accretion, Sulu Sea backarc basin was opened by Celebes Sea subduction (∼21 Ma) and rollback (17–9 Ma). The Middle Eocene (42.65 Ma) Sabah ophiolite and Eocene‐Oligocene (34–33 Ma) Central Palawan ophiolite have MORB‐IAT‐transitional features, representing an intra‐oceanic subduction setting in the Paleogene northern Borneo and central‐southern Palawan. across the deep basin of Sulu–Celebes Sea could introduce. SE‐dipping Sulu Sea subduction likely occurred along the Negros‐Sulu trenches, and produced arc volcanism from ∼4 Ma. GEOLOGICAL OUTLINES The Sulu Sea is a structurally complex basin, elongated in a northeast-southwest direction. The Cenozoic Sulu Sea arc‐basin system is situated in the tectonic junction between the South China Sea (SCS), northern Borneo, Palawan Continental Terrane, Philippine Mobile Belt, and Celebes Sea. and Petrology, Exploration If you do not receive an email within 10 minutes, your email address may not be registered, Subduction rollback likely occurred in 17–14 Ma and 13–9 Ma, shifting arc magmatism southeast to the Sulu ridge and opening the SE Sulu Sea backarc basin. There are 32 chapters divided into the following sections: Rifted Margins; Convergent Margins; Small Basin Margins; and Resources, Comparative Structure, and Eustatic Changes in Sea Level. Properties of Rocks, Computational Unlimited viewing of the article PDF and any associated supplements and figures. The 40,000 sq km basin contains as much as 8,000 m of Neogene deltaic May 10th, 1993 Knowledge of continental margins, AAPG held three meetings in 1977 to review the current of! 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