Thierstein, Hans R; MacDougall, J Douglas; Martin, Ellen E; Larsen, Birger; Barron, John A; Baldauf, Jack G (1991): Age determination of Paleogene sediments from the Prysz Bay [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.758206, Supplement to: Thierstein, HR et al. (1991): Age determinations of Paleogene Diamictites from Prydz Bay (Site 739), Antarctica, using sr isotopes of mollusks and biostratigraphy of microfossils (diatoms and coccoliths). In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 739-745, https://doi.org/10.2973/odp.proc.sr.119.178.1991
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Abstract:
Age dating of Paleogene diamictites from ODP Site 739 in Prydz Bay with marine microfossils (diatoms and calcareous nannofossils) suggests the build-up of a major East Antarctic ice shield in latest Eocene to earliest Oligocene time, about 35-38 m.y. ago. Strontium isotopic analyses of small mollusk remains found within these diamictites, however, yield younger ages ranging from 29 to 23 Ma (i.e., latest early Oligocene to earliest Miocene). These age discrepancies could be caused by repeated glacial reworking of microfossils, macrofossils, and sediment clasts through the late Oligocene or, alternatively, by ion exchange in the still aragonitic mollusk shells.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -67.162000 * Median Longitude: 74.951367 * South-bound Latitude: -67.285000 * West-bound Longitude: 74.690500 * North-bound Latitude: -66.916000 * East-bound Longitude: 75.081800
Date/Time Start: 1988-01-18T00:00:00 * Date/Time End: 1988-02-03T20:00:00
Event(s):
119-739 * Latitude: -67.285000 * Longitude: 75.081800 * Date/Time Start: 1988-01-18T00:00:00 * Date/Time End: 1988-01-23T00:00:00 * Elevation: -423.0 m * Penetration: 499.6 m * Recovery: 176.1 m * Location: Prydz Bay * Campaign: Leg119 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 67 cores; 499.6 m cored; 0 m drilled; 35.3% recovery
119-739C * Latitude: -67.285000 * Longitude: 75.081800 * Date/Time Start: 1988-01-19T03:00:00 * Date/Time End: 1988-01-23T05:30:00 * Elevation: -423.0 m * Penetration: 486.8 m * Recovery: 168.5 m * Location: Prydz Bay * Campaign: Leg119 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 62 cores; 486.8 m cored; 0 m drilled; 34.6 % recovery
119-743A * Latitude: -66.916000 * Longitude: 74.690500 * Date/Time Start: 1988-02-02T17:00:00 * Date/Time End: 1988-02-03T20:00:00 * Elevation: -999.0 m * Penetration: 98.1 m * Recovery: 21.8 m * Location: Prydz Bay * Campaign: Leg119 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 97.3 m cored; 0 m drilled; 22.4 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Thierstein, HR; MacDougall, JD; Martin, EE et al. (1991): (Table 2) Strontium, oxygen, and carbon isotopic data of ODP Holes 119-739C and 119-743A. https://doi.org/10.1594/PANGAEA.758204
- Thierstein, HR; MacDougall, JD; Martin, EE et al. (1991): (Table 3) Strontium in pore waters from ODP Holes 119-739C. https://doi.org/10.1594/PANGAEA.758205
- Thierstein, HR; MacDougall, JD; Martin, EE et al. (1991): (Table 1) Sampling levels, type of shell, and minerolgy of mollusk shells of ODP Holes 119-739C and 119-743A. https://doi.org/10.1594/PANGAEA.758203