Li, Qianyu; Radford, Sally S; Banner, Fred T (1992): Planktonic foraminifera in late Eocene to Pleistocene sediments of ODP Hole 120-747A and 120-749B. PANGAEA, https://doi.org/10.1594/PANGAEA.728733, Supplement to: Li, Q et al. (1992): Distribution of microperforate tenuitellid planktonic foraminifers in holes 747A and 749B; Kerguelen Plateau. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 569-594, https://doi.org/10.2973/odp.proc.sr.120.171.1992
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Late Eocene to Pleistocene planktonic foraminifers from Leg 120 Holes 747A and 749B on the Kerguelen Plateau were quantitatively analyzed. Microperforate tenuitellid forms dominate the Oligocene to middle Miocene, and 17 species (including the new species Tenuitella jamesi and Tenuitellinata selleyi) are recorded.
A lineage zonation of tenuitellid foraminifers is proposed as an alternative scheme for refinement of the Oligocene-Miocene biostratigraphy in high latitudes. Progressive or abrupt alterations in morphological characters within this lineage, producing different morphotypes or species, coincided with prolonged or sudden changes in paleoclimate. These microperforate planktonic foraminifers thus appear to have potential as indicators of cold-water masses and temperature fluctuations in post-Eocene oceans.
Median Latitude: -56.764000 * Median Longitude: 76.600750 * South-bound Latitude: -58.717000 * West-bound Longitude: 76.407500 * North-bound Latitude: -54.811000 * East-bound Longitude: 76.794000
Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1988-03-25T09:45:00
120-747A * Latitude: -54.811000 * Longitude: 76.794000 * Date/Time Start: 1988-03-06T22:30:00 * Date/Time End: 1988-03-08T17:15:00 * Elevation: -1706.0 m * Penetration: 256 m * Recovery: 227.34 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 256 m cored; 0 m drilled; 88.8 % recovery
120-749B * Latitude: -58.717000 * Longitude: 76.407500 * Date/Time Start: 1988-03-24T16:30:00 * Date/Time End: 1988-03-25T09:45:00 * Elevation: -1080.0 m * Penetration: 123.8 m * Recovery: 64.66 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg120 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 123.8 m cored; 0 m drilled; 52.2 % recovery