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Bowles, Julie (2006): Magnetostratigraphic age-depth tie points of ODP Leg 208 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.776196, Supplement to: Bowles, J (2006): Data report: Revised magnetostratigraphy and magnetic mineralogy of sediments from Walvis Ridge, Leg 208. In: Kroon, D., Zachos, J.C., and Richter, C. (Eds.), Proceedings of the Ocean Drilling Program, Scientific Results, 208: College Station, TX (Ocean Drilling Program), 208, 1-24, https://doi.org/10.2973/odp.proc.sr.208.206.2006

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Abstract:
We report the paleomagnetic and rock magnetic results from discrete sample analysis of sediments from Walvis Ridge, Leg 208 of the Ocean Drilling Program. In an effort to refine the shipboard magnetostratigraphy, alternating field and thermal demagnetization of discrete samples were carried out, predominantly on samples from Sites 1262 and 1267. Results are generally consistent with the shipboard pass-through cryomagnetometer data, though in some cases the discrete samples resolved ambiguities in the reversal record. Significantly, the C24r/C24n reversal boundary was identified at Sites 1262 and 1267, and most boundaries in the Paleocene and Upper Cretaceous sections are now identified to within 10-30 cm. Magnetic mineralogy results show that prior to the late Miocene, the predominant detrital magnetic component was coarse-grained magnetite and that after the late Miocene, titanomagnetite has also been present. This suggests a possible change in detrital source at that time.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -28.287811 * Median Longitude: 2.315958 * South-bound Latitude: -28.835017 * West-bound Longitude: 1.577000 * North-bound Latitude: -27.185833 * East-bound Longitude: 2.845483
Date/Time Start: 2003-03-24T00:00:00 * Date/Time End: 2003-04-26T00:00:00
Event(s):
208-1262 * Latitude: -27.185833 * Longitude: 1.577000 * Date/Time Start: 2003-03-24T00:00:00 * Date/Time End: 2003-03-29T00:00:00 * Elevation: -4755.4 m * Penetration: 583.9 m * Recovery: 502.5 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 54 cores; 493.9 m cored; 90 m drilled; 101.7 % recovery
208-1263 * Latitude: -28.532950 * Longitude: 2.779567 * Date/Time Start: 2003-03-29T00:00:00 * Date/Time End: 2003-04-05T00:00:00 * Elevation: -2717.1 m * Penetration: 1261.5 m * Recovery: 709.5 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 93 cores; 777.9 m cored; 483.6 m drilled; 91.2 % recovery
208-1264 * Latitude: -28.532483 * Longitude: 2.845483 * Date/Time Start: 2003-04-05T00:00:00 * Date/Time End: 2003-04-08T00:00:00 * Elevation: -2505.1 m * Penetration: 566.5 m * Recovery: 563.8 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 61 cores; 566.5 m cored; 0 m drilled; 99.5 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Bowles, J (2006): (Table T1) Magnetostratigraphic age-depth tie points for ODP Site 208-1262. https://doi.org/10.1594/PANGAEA.776188
  2. Bowles, J (2006): (Table T2) Magnetostratigraphic age-depth tie points for ODP Site 208-1263. https://doi.org/10.1594/PANGAEA.776189
  3. Bowles, J (2006): (Table T3) Magnetostratigraphic age-depth tie points for ODP Site 208-1264. https://doi.org/10.1594/PANGAEA.776190
  4. Bowles, J (2006): (Table T4) Magnetostratigraphic age-depth tie points for ODP Site 208-1265. https://doi.org/10.1594/PANGAEA.776191
  5. Bowles, J (2006): (Table T5) Magnetostratigraphic age-depth tie points for ODP Site 208-1266. https://doi.org/10.1594/PANGAEA.776192
  6. Bowles, J (2006): (Table T6) Magnetostratigraphic age-depth tie points for ODP Site 208-1267. https://doi.org/10.1594/PANGAEA.776194