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Gombos, Andrew M (2007): Abundance estimates of diatoms in ODP Leg 207 sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.775921, Supplement to: Gombos, AM (2007): Data report: Survey of diatoms in Ocean Drilling Program Leg 207, Sites 1257 and 1258: Demerara Rise, western Atlantic. In: Mosher, DC; Erbacher, J; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 207, 1-5, https://doi.org/10.2973/odp.proc.sr.207.115.2007

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Abstract:
Twenty-eight core catcher samples were provided to the author by the shipboard party for evaluation of fossil diatoms. Samples are from Ocean Drilling Program Leg 207 Holes 1257A, 1257B, 1257C, and 1258A. The samples range from 50 to 112 meters below the seafloor (mbsf) at Site 1257 and from ~22 to 60 mbsf at Site 1258.
At Site 1257, samples range in age from middle Eocene (foraminifer Zone P14-13) to late Paleocene (mid-foraminifer Zone P4). At Site 1258, the samples range from middle Eocene (foraminifer Zone P11) to early Eocene (foraminifer Zone P5) according to the preliminary biostratigraphic reports (Erbacher, Mosher, Malone, et al., 2004, doi:10.2973/odp.proc.ir.207.2004).
All samples were processed at Florida State University Antarctic Research Facility. Treatment included acidization and sieving through stacked 38- and 63-µm sieves. Strew slides were made from each fraction and the catcher pan. A Zeiss Photoscope II microscope was used for examination of the prepared slides.
Samples from Holes 1257A, 1257B, and 1257C showed that most of the samples are barren of siliceous microfossils. Only a few radiolarians and fragments of radiolarians were observed.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 9.449063 * Median Longitude: -54.429882 * South-bound Latitude: 9.433330 * West-bound Longitude: -54.733310 * North-bound Latitude: 9.453830 * East-bound Longitude: -54.341580
Date/Time Start: 2003-01-15T14:30:00 * Date/Time End: 2003-01-25T10:10:00
Event(s):
207-1257A * Latitude: 9.453830 * Longitude: -54.341960 * Date/Time Start: 2003-01-15T14:30:00 * Date/Time End: 2003-01-19T22:45:00 * Elevation: -2951.0 m * Penetration: 284.7 m * Recovery: 216.05 m * Location: South Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 31 core; 284.7 m cored; 0 m drilled; 75.9 % recovery
207-1257B * Latitude: 9.453630 * Longitude: -54.341800 * Date/Time Start: 2003-01-19T22:45:00 * Date/Time End: 2003-01-21T13:20:00 * Elevation: -2951.0 m * Penetration: 227.3 m * Recovery: 116.23 m * Location: South Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 187.3 m cored; 40 m drilled; 62.1 % recovery
207-1257C * Latitude: 9.453430 * Longitude: -54.341580 * Date/Time Start: 2003-01-21T13:20:00 * Date/Time End: 2003-01-22T15:30:00 * Elevation: -2951.0 m * Penetration: 235.9 m * Recovery: 96.6 m * Location: South Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 153.9 m cored; 82 m drilled; 62.8 % 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

  1. Gombos, AM (2007): (Table T2) Diatoms in sediments of ODP Hole 207-1257B. https://doi.org/10.1594/PANGAEA.775920
  2. Gombos, AM (2007): (Table T1) Diatoms in ODP Leg 207 sediments. https://doi.org/10.1594/PANGAEA.775919