Depositional history of the Celebes Sea from ODP sites 767 and 770

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/GL017i011p02061· OSTI ID:5504892

Smith, R B ^[1]; Betzler, C ^[2]; Brass, G W ^[3]; Huang, Zehui ^[4]; Linsley, B K ^[5]; Merrill, D; Shyu, Jihping ^[6]; Mueller, C M ^[7]; Nederbragt, A J ^[8]; Nichols, G J ^[9]; Pubellier, M ^[10]; Sajona, F G ^[11]; Scherer, R P ^[12]; Shibuya, Hidetoshi ^[13]; Solidum, R U ^[14]; Spadea, P ^[15]

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1. California State Univ., Fresno (USA)
2. Geologisches Institut, Tuebingen (West Germany)
3. Univ. of Miami, FL (USA)
4. Dalhousie Univ., Halifax, Nova Scotia (Canada)
5. Univ. of New Mexico, Albuquerque (USA)
6. Texas A and M Univ., College Station (USA)
7. Universitaet of Frankfurt (West Germany)
8. Vrije Universiteit, Amsterdam (Netherlands)
9. Univ. of London (England)
10. Universite Pierre et Marie Curie, Paris (France)
11. Petrolab, Quezon City (Philippines)
12. Ohio State Univ., Columbus (USA)
13. Univ. of Osaka, Sakai (Japan)
14. Philippine Institute of Volcanology and Seismology, Quezon City (Philippines)
15. Universita di Udine (Italy)

Leg 124 of the Ocean Drilling Project drilled Sites 767 and 770 in the northern Celebes Sea, reaching late middle Eocene basaltic basement at both sites. Major shifts in sediment provenance record the changing tectonic setting of the basin. From late middle Eocene into early Miocene time pelagic sedimentation prevailed, with little influence from continental or volcanic arc sources. A major continental influence is first documented in middle Miocene time as a thick sequence of quartzose, mud-rich turbidites accumulated on the deeper basin floor, possibly in response to middle Miocene orogeny in northern Borneo. Terrigenous turbidite deposition waned during the late Miocene as active arc volcanism began to contribute significant amounts of hemipelagic sediment and ash layers, which have remained the dominant basinal sediment to the present. Although the Celebes Sea is now nearly surrounded by volcanic arc terranes, the absence of volcaniclastic sediment in the Eocene to early Miocene section suggests that the basin did not form by back-arc spreading.

• OSTI ID: 5504892
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Journal Name: Geophysical Research Letters (American Geophysical Union); (United States) Vol. 17:11; ISSN 0094-8276; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
ASIA
BASEMENT ROCK
BOREHOLES
CAVITIES
CENOZOIC ERA
CONTINENTAL MARGIN
DATA ANALYSIS
DEPOSITION
DEVELOPING COUNTRIES
DRILLING
EOCENE EPOCH
GEOLOGIC AGES
GEOLOGIC HISTORY
GEOLOGY
INDONESIA
ISLANDS
MIOCENE EPOCH
ORIGIN
OROGENESIS
PACIFIC OCEAN
PHILIPPINES
SEA BED
SEAS
SEDIMENTS
SURFACE WATERS
TECTONICS
TERTIARY PERIOD
VOLCANISM