Nederbragt, Alexandra J (1991): Cenozoic planktonic foraminfers from the Celebes and Sulu Seas [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.729492, Supplement to: Nederbragt, AJ (1991): Distribution and preservation of Cenozoic planktonic foraminifers from the Celebs and Sulu Seas, Leg 124. In: Silver, EA; Rangin, C; von Breymann, MT; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 124, 159-170, https://doi.org/10.2973/odp.proc.sr.124.130.1991
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Abstract:
This paper presents the planktonic foraminifer biostratigraphy of the sites drilled during Ocean Drilling Program Leg 124 in the Celebes and Sulu Seas. It discusses preservation of foraminifers in pelagic sediments and in calcareous turbidites.
In the Celebes Sea, pelagic carbonates are only found in the Eocene and Oligocene at Site 770. The faunas are poorly preserved due to severe dissolution and offer little biostratigraphic detail. In the Sulu Sea, pelagic carbonates are found in the upper Pliocene and Pleistocene at Sites 768 and 769 and throughout the recovered sequence at the shallower Site 771. The foraminifer faunas from these sediments allow for recognition of most standard zones. Variations in preservation of pelagic foraminifer faunas with time are due to changes in the depth of the lysocline. Shifts to improved preservation at Sites 768 and 769 are synchronous in the upper Pliocene/Pleistocene and may be related to global sea-level cycles.
Planktonic foraminifers are also abundant in calcareous turbidites, which were deposited in both basins from the late Miocene onward. However, the turbidites are fine-grained, and biostratigraphic marker species are absent as a result of size-sorting during transport. In the Celebes Sea, shelf-derived material was a major component of early-late Miocene and middle Pliocene to early Pleistocene turbidites. Changes in the composition of the turbidites may correspond to global sea-level changes. In the Sulu Sea, a shift from shelf-derived material in Pliocene calcareous turbidites to a pelagic source in the Pleistocene may be related to subsidence of the Cagayan Ridge.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 4.968183 * Median Longitude: 123.586200 * South-bound Latitude: 4.791500 * West-bound Longitude: 123.503300 * North-bound Latitude: 5.144867 * East-bound Longitude: 123.669100
Date/Time Start: 1988-11-10T15:00:00 * Date/Time End: 1988-12-30T00:00:00
Event(s):
124-767B * Latitude: 4.791500 * Longitude: 123.503300 * Date/Time Start: 1988-11-10T15:00:00 * Date/Time End: 1988-11-19T20:15:00 * Elevation: -4916.0 m * Penetration: 739 m * Recovery: 585.05 m * Location: Mindanao Sea * Campaign: Leg124 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 739 m cored; 0 m drilled; 79.2 % recovery
124-770 * Latitude: 5.144867 * Longitude: 123.669100 * Date/Time Start: 1988-12-20T00:00:00 * Date/Time End: 1988-12-30T00:00:00 * Elevation: -4516.7 m * Penetration: 1014.5 m * Recovery: 168.8 m * Location: Mindanao Sea * Campaign: Leg124 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 35 cores; 328.3 m cored; 0 m drilled; 51.4% recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Nederbragt, AJ (1991): (Table 1) Distribution of selected planktonic foraminifer species in dissolution-affected faunas of ODP Hole 124-767B. https://doi.org/10.1594/PANGAEA.729490
- Nederbragt, AJ (1991): (Table 2) Distribution of selected planktonic foraminifer species at ODP Site 124-770. https://doi.org/10.1594/PANGAEA.729491