Day, Ron; Osterhoudt, Mary; Bleil, Ulrich (1983): (Table 1) Magnetic properties and Curie temperatures of basalts from DSDP Leg 65 holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.818184, Supplement to: Day, R et al. (1983): Rock magnetism of igneous rocks from Deep Sea Drilling Project Sites 482, 483, and 485. In: Lewis, BTR; Robinson, P; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 65, 727-736, https://doi.org/10.2973/dsdp.proc.65.140.1983
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Abstract:
During DSDP Leg 65, we achieved significant basement penetration at three sites (482, 483, and 485) in the mouth of the Gulf of California (Lewis and Robinson, 1983, doi:10.2973/dsdp.proc.65.1983). Since these holes were all drilled into extremely young crust near the crest of the East Pacific Rise, the rocks we recovered present an unusual opportunity to study the magnetic properties of submarine basalts before alteration has become pervasive. To take advantage of this opportunity and to complement the paleomagnetic studies conducted on these basalts by Day (1983, doi:10.2973/dsdp.proc.65.138.1983), we have studied, in the same samples, the following properties: saturation magnetization (Js); intensity and stability of isothermal remanent magnetization (IRM); hysteresis parameters, such as the coercive force (Hc), the remanent coercive force (HRC), and the ratio of saturation remanence (JRS) to saturation magnetization; susceptibility (x); and Curie temperature (Tc). In this chapter we will discuss the results of these studies in conjunction with the opaque mineralogy of the samples.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 22.810243 * Median Longitude: -108.195829 * South-bound Latitude: 22.748700 * West-bound Longitude: -108.748300 * North-bound Latitude: 22.883300 * East-bound Longitude: -107.903800
Date/Time Start: 1979-01-24T00:00:00 * Date/Time End: 1979-03-05T00:00:00
Minimum DEPTH, sediment/rock: 110.13 m * Maximum DEPTH, sediment/rock: 328.80 m
Event(s):
65-482B * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 229 m * Recovery: 99.8 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 184.5 m cored; 0 m drilled; 54.1 % recovery
65-482C * Latitude: 22.789000 * Longitude: -107.992800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 184 m * Recovery: 84.6 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 120.5 m cored; 0 m drilled; 70.2 % recovery
65-482D * Latitude: 22.788500 * Longitude: -107.991800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -3008.0 m * Penetration: 186.5 m * Recovery: 64.2 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 114 m cored; 0 m drilled; 56.3 % recovery
Comment:
Sediment depth is given in mbsf. Stable Inclination: Sample 65-482C-15-4,68 = 14-18; sample 65-482D-10-2,111 = 40-42.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | Day, Ron | DSDP/ODP/IODP sample designation | ||
| 6 | Volume | Vol | cm3 | Day, Ron | ||
| 7 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 8 | NRM, Intensity | Inten (NRM) | mA/m | Day, Ron | ||
| 9 | NRM, Inclination | Incl (NRM) | deg | Day, Ron | stable | |
| 10 | NRM, Median destructive field of natural remanent magnetization | MDF (NRM) | Oe | Day, Ron | #1 | |
| 11 | Saturation isothermal remanent magnetisation | SIRM | A/m | Day, Ron | ||
| 12 | NRM, Median destructive field of natural remanent magnetization | MDF (NRM) | Oe | Day, Ron | #1 | |
| 13 | Saturation magnetization | Js | Gs | Day, Ron | ||
| 14 | Ratio | Ratio | Day, Ron | Saturation Isothermal Remanence (Jrs)/Saturation Magnetization (Js) | ||
| 15 | Coercivity | Hc | Oe | Day, Ron | ||
| 16 | Coercivity of remanence | Hcr | Oe | Day, Ron | ||
| 17 | Zone, biogeographic | Biogeograph zone | Day, Ron | |||
| 18 | Magnetic susceptibility, volume | kappa | 10-6 SI | Day, Ron | 10**3 Gs | |
| 19 | Koenigsberger ratio | Q-ratio | Oe | Day, Ron | based on magnetic field H(0) = 0.25 Oe | |
| 20 | Curie temperature | Curie temp | °C | Day, Ron | heating | |
| 21 | Curie temperature | Curie temp | °C | Day, Ron | heating, #2 | |
| 22 | Curie temperature | Curie temp | °C | Day, Ron | cooling | |
| 23 | Curie temperature | Curie temp | °C | Day, Ron | cooling, #2 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
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