Wang, Daming; Van der Voo, Rob (2004): Magnetic properties of the oceanic igneous rocks (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.715035, Supplement to: Wang, D; Van der Voo, R (2004): The hysteresis properties of multidomain magnetite and titanomagnetite/titanomaghemite in mid-ocean ridge basalts. Earth and Planetary Science Letters, 220(1-2), 175-184, https://doi.org/10.1016/S0012-821X(04)00052-4
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Abstract:
Hysteresis measurements have been carried out on a suite of ocean-floor basalts with ages ranging from Quaternary to Cretaceous. Approximately linear, yet separate, relationships between coercivity (Bc) and the ratio of saturation remanence/saturation magnetization (Mrs/Ms) are observed for massive doleritic basalts with low-Ti magnetite and for pillow basalts with multi-domain titanomagnetites (with x= 0.6). Even when the MORB has undergone lowtemperature oxidation resulting in titanomaghemite, the parameters are still distinguishable, although offset from the trend for unoxidized multidomain titanomagnetite. The parameters for these iron oxides with different titanium content reveal contrasting trends that can be explained by the different saturation magnetizations of the mineral types. This plot provides a previously underutilized and non-destructive method to detect the presence of low-titanium magnetite in igneous rocks, notably MORB.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 17.095858 * Median Longitude: 10.992600 * South-bound Latitude: -43.910000 * West-bound Longitude: -120.548300 * North-bound Latitude: 63.351000 * East-bound Longitude: 165.030500
Date/Time Start: 1972-08-18T00:00:00 * Date/Time End: 1981-08-07T00:00:00
Minimum DEPTH, sediment/rock: 122.35 m * Maximum DEPTH, sediment/rock: 807.55 m
Event(s):
25-249 * Latitude: -29.949800 * Longitude: 36.077000 * Date/Time: 1972-08-18T00:00:00 * Elevation: -2098.0 m * Penetration: 412 m * Recovery: 221.4 m * Location: Indian Ocean//RIDGE * Campaign: Leg25 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 285 m cored; 0 m drilled; 77.7 % recovery
27-261 * Latitude: -12.947200 * Longitude: 117.892700 * Date/Time: 1972-11-17T00:00:00 * Elevation: -5667.0 m * Penetration: 579.5 m * Recovery: 120.5 m * Location: Indian Ocean//PLAIN * Campaign: Leg27 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 323 m cored; 9.5 m drilled; 37.3 % recovery
29-283 * Latitude: -43.910000 * Longitude: 154.282700 * Date/Time: 1973-04-10T00:00:00 * Elevation: -4729.0 m * Penetration: 592 m * Recovery: 61.1 m * Location: Antarctic Ocean/Tasman Sea * Campaign: Leg29 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 136.5 m cored; 19.5 m drilled; 44.8 % recovery
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 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 6 | Sample code/label | Sample label | Wang, Daming | DSDP/ODP/IODP sample designation | ||
| 7 | Sample comment | Sample comment | Wang, Daming | Set A = basalt samples Curie Temperature < 400°C, Set B = doleritic basalt samples Curie Temperature >500°C | ||
| 8 | Coercivity | Hc | mT | Wang, Daming | ||
| 9 | Hysteresis, coercivity of remanence/coercivity | Hcr/Hc | Wang, Daming | |||
| 10 | Hysteresis, saturation magnetization | Ms | mA m2/kg | Wang, Daming | ||
| 11 | Hysteresis, saturation magnetization/ saturation remanence | Mrs/Ms | Wang, Daming | |||
| 12 | Curie temperature | Curie temp | °C | Wang, Daming | vibrating sample magnetometer (microVSM) | |
| 13 | Temperature, calculated | T cal | °C | Wang, Daming | unblock, removal of 80 % of maximum NRM |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
207 data points