Hirano, Satoshi; Ogawa, Yujiro; Kawamura, Kiichiro (2001): (Table T1) Anisotropy of magnetic susceptibility of ODP Hole 174B-1074A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.787682, Supplement to: Hirano, S et al. (2001): Deformation of unlithified sediments in an early stage of the compaction process deduced from microtextures and magnetic fabrics: ODP Leg 174B, Hole 1074A. In: Becker, K; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 174B, 1-13, https://doi.org/10.2973/odp.proc.sr.174B.131.2001
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Abstract:
To reveal compaction processes and mechanisms, we have studied microtextures and magnetic fabrics of unlithified sediments collected from Hole 1074A, on the eastern flank of the Mid-Atlantic Ridge, during Leg 174B. Samples consisted of nannofossil ooze with varying amounts of foraminifers, clay, radiolarians and sand. Scanning electron microscope observation shows that nannofossils and planktonic foraminifers in the sediments are well preserved, that void space in the unlithified sediments is formed by an assemblage of microfossils consisting of a stairstep structure of nannofossils and an aggregation of foraminifers, and that the number of spine-shaped nannofossil fragments tends to increase with depth, suggesting weak deformation probably due to compaction occurring during burial. Anisotropy of magnetic susceptibility results, however, provide little obvious information about deformation of the sediments. These results are consistent with those of the onboard multisensor track measurements.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 22.780520 * Longitude: -46.112330
Date/Time Start: 1997-08-01T02:30:00 * Date/Time End: 1997-08-01T02:30:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 66.50 m
Event(s):
174-1074A * Latitude: 22.780520 * Longitude: -46.112330 * Date/Time: 1997-08-01T02:30:00 * Elevation: -4445.4 m * Penetration: 69.5 m * Recovery: 66.34 m * Location: Congo Fan, Angola Basin, North Atlantic Ocean * Campaign: Leg174B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 69.5 m cored; 0 m drilled; 95.5 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Hirano, Satoshi | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 3 | Magnetic susceptibility, volume | kappa | 10-6 SI | Hirano, Satoshi | Kappabridge, AGICO KLY-3S | |
| 4 | Anisotropy-magnetic susceptibility, factor L, lineation | AMS factor L | Hirano, Satoshi | |||
| 5 | Anisotropy-magnetic susceptibility, factor F, foliation | AMS factor F | Hirano, Satoshi | |||
| 6 | Inclination of principle axis K1 | I(Kmax) | deg | Hirano, Satoshi | Kappabridge, AGICO KLY-3S | incl. of maximum axis of susceptibility ellipsoid |
| 7 | Inclination of principle axis K3 | I(Kmin) | deg | Hirano, Satoshi | Kappabridge, AGICO KLY-3S | incl. of minimum axis of susceptibility ellipsoid |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
667 data points