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Furuta, Toshio (1983): Magnetic properties and geochemistry in DSDP Holes 69-504B an d 69-505B [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816638, Supplement to: Furuta, T (1983): Magnetic properties of basalt samples from Holes 504B and 505B on the Costa Rica Rift, Deep Sea Drilling Project Legs 69 and 70. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 711-720, https://doi.org/10.2973/dsdp.proc.69.146.1983

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Published: 1983 (exact date unknown) • DOI registered: 2016-01-05

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Abstract:
More than 60 basalt samples from two Deep Sea Drilling Project holes on the Costa Rica Rift were studied for magnetic properties and were found to have no properties significantly different from other DSDP basalts. Opaque mineralogical and thermomagnetic properties of these samples, however, to some extent show differences from normal submarine basalts; a new type of thermomagnetic curve and wide range of chemical compositions were recognized. Oxidized samples possibly containing incipient ilmenite exsolution lamellae were reduced and re-equilibrated during heating. The Curie temperatures of the re-equilibrated titanomagnetites are interpreted to be those of the original crystallized phase before oxidation.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.334938 * Median Longitude: -83.739207 * South-bound Latitude: 1.227000 * West-bound Longitude: -83.788300 * North-bound Latitude: 1.920000 * East-bound Longitude: -83.730000
Date/Time Start: 1979-09-29T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Event(s):
69-504B * Latitude: 1.227200 * Longitude: -83.730200 * Date/Time: 1979-10-07T00:00:00 * Elevation: -3460.0 m * Penetration: 489 m * Recovery: 262 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
69-505B * Latitude: 1.920000 * Longitude: -83.788300 * Date/Time: 1979-09-29T00:00:00 * Elevation: -3507.0 m * Penetration: 178 m * Recovery: 6.8 m * Location: North Pacific/GRABEN * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 42 m cored; 0 m drilled; 16.3 % 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

  1. Furuta, T (1983): (Table 2) Thermomagnetic and opaque-mineral properties of basalts from DSDP Legs 69 and 70. https://doi.org/10.1594/PANGAEA.816636
  2. Furuta, T (1983): (Table 1) Magnetic properties of DSDP Hole 69-504B basalts. https://doi.org/10.1594/PANGAEA.816635
  3. Furuta, T (1983): (Table 3) Chemical composition of titanomagnetites and discrete ilmenites in DSDP Sample 69-504B-7-5,3-5. https://doi.org/10.1594/PANGAEA.816637