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Day, Ron; Osterhoudt, Mary; Bleil, Ulrich (1983): (Table 1) Magnetic properties and Curie temperatures of basalts from DSDP Leg 65 holes. 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):
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 * 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 * 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 * 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):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5Sample code/labelSample labelDay, RonODP sample designation
6VolumeVolcm3Day, Ron
7DEPTH, sediment/rockDepthmGeocode
8NRM, IntensityInten (NRM)mA/mDay, Ron
9NRM, InclinationIncl (NRM)degDay, Ronstable
10NRM, Median destructive field of natural remanent magnetisationMDF (NRM)oerstedDay, Ron#1
11Saturation isothermal remanent magnetisationSIRMA/mDay, Ron
12NRM, Median destructive field of natural remanent magnetisationMDF (NRM)oerstedDay, Ron#1
13Saturation magnetizationJsGsDay, Ron
14RatioRatioDay, RonSaturation Isothermal Remanence (Jrs)/Saturation Magnetization (Js)
15CoercivityHcoerstedDay, Ron
16Coercivity of remanenceHcroerstedDay, Ron
17Zone, biogeographicBiogeograph zoneDay, Ron
18Susceptibility, volumekappa10-6 SIDay, Ron10**3 Gs
19Koenigsberger ratioQ-ratiooerstedDay, Ronbased on magnetic field H(0) = 0.25 Oe
20Curie temperatureCurie temp°CDay, Ronheating
21Curie temperatureCurie temp°CDay, Ronheating, #2
22Curie temperatureCurie temp°CDay, Roncooling
23Curie temperatureCurie temp°CDay, Roncooling, #2
Size:
2864 data points

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