Depositional history of the Sulu Sea from ODP Sites 768, 769 and 771

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doi: 10.1029/GL017i011p02065
Author(s): Nichols, Gary J.; Betzler, Christian; Brass, Garrett W.; Huang, Zehui; Linsley, Braddock K.; Merrill, Dean L.; Müller, Carla M.; Nederbragt, Alexandra J.; Pubellier, Manuel; Sajona, Fernando G.; Scherer, Reed P.; Shibuya, Hidetoshi; Shyu, Jih-Ping; Smith, Randall B.; Solidum, Renato U.; Spadea, Piera
Author Affiliation(s): Primary:
R. Holloway and Bedford New Coll., Dep. Geol., London, United Kingdom
Other:
Univ. Pierre et Marie Curie, France
Geol. Inst., Federal Republic of Germany
Univ. Miami, United States
Dalhousie Univ., Canada
Univ. N.M., United States
Tex. A&M Univ., United States
Univ. Frankfurt, Federal Republic of Germany
Vrije Univ., Netherlands
Ohio State Univ., United States
Univ. Osaka, Japan
Calif. State Univ., United States
Philipp. Inst. Volcanol. and Seismol., Philippines
Univ. Udine, Italy
Volume Title: Leg 124 of the Ocean Drilling Program
Volume Author(s): Silver, Eli A.; Rangin, Claude
Source: Leg 124 of the Ocean Drilling Program, Eli A. Silver and Claude Rangin. Geophysical Research Letters, 17(11), p.2065-2068. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0094-8276 CODEN: GPRLAJ
Note: In English. 10 refs.; strat. cols.
Summary: Holes were drilled at three Sites in the Sulu Sea on Ocean Drilling Program Leg 124. Site 768 lies in the deeper part of the SE sub-basin and Sites 769 and 771 lie on the flanks of the Cagayan ridge. The results indicate that the Sulu Basin originated in the late early Miocene (c.18.8 Ma) in a backarc setting. The Cagayan Ridge was a site of early to early middle Miocene arc volcanism with the deposition of a thick sequence of andesitic to basaltic volcaniclastic deposits. In the basin center an early Miocene pelagic sequence is interrupted by a thick unit of rhyolitic to dacitic pyroclastic flows. Middle to late Miocene sedimentation is more continental in character with thick quartz-rich turbidites in the basin center. Only the hemipelagic claystone related to these terrigenous turbidites were deposited on the Cagayan Ridge. A decrease in the supply of clastic detritus from arc and continental sources and a change in the level of the carbonate compensation depth in the upper Pliocene resulted in pelagic carbonate deposition throughout the late Pliocene and Pleistocene. Abstract Copyright Copyright 1990 by the American Geophysical Union.
Year of Publication: 1990
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Back-arc basins; Basins; Biostratigraphy; Cagayan Ridge; Carbonate compensation depth; Cenozoic; Cores; Deposition; Foraminifera; Globigerinacea; Globigerinidae; Globigerinoides; Interpretation; Invertebrata; Leg 124; Lower Miocene; Marine environment; Microfossils; Miocene; Nannofossils; Neogene; North Pacific; Northwest Pacific; ODP Site 768; ODP Site 769; ODP Site 771; Ocean Drilling Program; Pacific Ocean; Pelagic environment; Plantae; Pleistocene; Pliocene; Protista; Quaternary; Radiolaria; Rotaliina; Sedimentation; Stratigraphy; Sulu Basin; Sulu Sea; Tertiary; Thallophytes; Turbidite; Upper Pliocene; Volcanism; Volcanology; West Pacific
Coordinates: N080001 N080004 E1211312 E1211309
N084706 N084709 E1211742 E1211309
N084040 N084042 E1204048 E1204046
Record ID: 1990064960
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from John Wiley & Sons, Chichester, United Kingdom