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Smit, Jan; van Eijden, AJM; Troelstra, Simon (1991): Occurrence and chemistry of microtektites of ODP Site 121-758 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.759149, Supplement to: Smit, J et al. (1991): Analysis of the Australasian Microtektite Event, the Toba Lake Event, and the Cretaceous/Paleogene boundary, eastern Indian Ocean. In: Weissel, J; Peirce, J; Taylor, E; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 121, 489-503, https://doi.org/10.2973/odp.proc.sr.121.149.1991

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Abstract:
The Toba lake event, the Australasian microtektite event, and the Cretaceous/Paleogene boundary were analyzed on the basis of foraminifers, carbonate content, trace elements, and spherules (microtektites). The Toba ash event, recovered in Hole 758C, may have had minor influences on the foraminiferal populations. The Australasian tektite event has probably some influence on foraminiferal ecology, because the larger specimens become scarce just above the microtektite layer. Microtektites recovered from Hole 758B closely resemble spherules recovered from several Cretaceous/Paleogene boundary localities in North America. The Cretaceous/Paleogene spherules, however, are usually larger and are completely altered to goyazite in the terrestrial environment and to smectite in a marine environment.
The Cretaceous/Paleogene boundary of Hole 752B does not show obvious anomalous trace-element concentrations, and iridium concentrations are below our detection limits. The trace-element pattern is dominated by the alternation of chalk with volcanic ash layers above the Cretaceous/Paleogene boundary.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 5.384000 * Median Longitude: 90.361160 * South-bound Latitude: 5.384000 * West-bound Longitude: 90.361100 * North-bound Latitude: 5.384000 * East-bound Longitude: 90.361200
Date/Time Start: 1988-06-15T04:40:00 * Date/Time End: 1988-06-15T23:50:00
Event(s):
121-758B * Latitude: 5.384000 * Longitude: 90.361200 * Date/Time Start: 1988-06-15T04:40:00 * Date/Time End: 1988-06-15T15:58:00 * Elevation: -2937.0 m * Penetration: 96 m * Recovery: 98.68 m * Location: Indian Ocean * Campaign: Leg121 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 96 m cored; 0 m drilled; 102.8 % recovery
121-758C * Latitude: 5.384000 * Longitude: 90.361100 * Date/Time Start: 1988-06-15T15:58:00 * Date/Time End: 1988-06-15T23:50:00 * Elevation: -2933.0 m * Penetration: 9.4 m * Recovery: 9.4 m * Location: Indian Ocean * Campaign: Leg121 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 core; 9.4 m cored; 0 m drilled; 100 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Smit, J; van Eijden, AJM; Troelstra, S (1991): (Table 5) Chemistry of microtektites in ODP Hole 121-758B. https://doi.org/10.1594/PANGAEA.759148
  2. Smit, J; van Eijden, AJM; Troelstra, S (1991): (Table 4) Carbonate and washed residue weight percentages in ODP Hole 121-758B. https://doi.org/10.1594/PANGAEA.759147
  3. Smit, J; van Eijden, AJM; Troelstra, S (1991): (Table 3) Carbonate and microtektite abundances in ODP Hole 121-758B. https://doi.org/10.1594/PANGAEA.759146
  4. Smit, J; van Eijden, AJM; Troelstra, S (1991): (Table 1) Carbonate concentration in ODP Hole 121-758C. https://doi.org/10.1594/PANGAEA.759144
  5. Smit, J; van Eijden, AJM; Troelstra, S (1991): (Table 2) Planktonic foraminiferal abundances in ODP Hole 121-758C. https://doi.org/10.1594/PANGAEA.759145