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Brink, J; Jarrard, RD (1998): Petrophysical measurements on core plug samples of sediment core CRP-1 (Table 1). doi:10.1594/PANGAEA.54728,
Supplement to: Brink, Jason; Jarrard, Richard D (1998): Petrophysics of core plugs from CRP-1 drillhole, Victoria Land Basin, Antarctica. Terra Antartica, 5(3), 291-297, hdl:10013/epic.28342.d001
This paper reports measurements of velocity vs pressure and of bulk density, porosity, matrix density, and magnetic susceptibility in 18 core plugs from CRP-1. Comparison of our bulk densities with continuous whole-core density records shows very good agreement. Core-plug measurements of matrix density permit conversion of the whole-core density record to porosity. Agreement between our magnetic susceptibility measurements and the continuous, whole-core data is excellent. In contrast, our atmospheric pressure measurements of P-wave velocity are ~10% faster than whole-core data obtained at the same pressure. Our measurements of velocity versus pressure indicate that in situ P-wave velocities are probably only 1-3% higher than those measured at atmospheric pressure. Although the Miocene section has undergone significant exhumation, we do not observe typical exhumation signatures of anomalously low initial velocities followed by microcrack closing as pressure is increased. Instead, velocity response to pressure appears to be dominated by a small amount of post-exhumation cementation.
Latitude: -77.007580 * Longitude: 163.755080
Date/Time Start: 1997-10-17T01:30:00 * Date/Time End: 1997-10-24T02:00:00
Minimum DEPTH, sediment/rock: 62.90 m * Maximum DEPTH, sediment/rock: 146.44 m
CRP-1 (16 km ENE Cape Roberts) * * Latitude: -77.007580 * Longitude: 163.755080 * Date/Time Start: 1997-10-17T01:30:00 * Date/Time End: 1997-10-24T02:00:00 * Elevation: -153.5 m * Penetration: 132.06 m * Recovery: 113.32 m * Location: off Cape Roberts, Ross Sea, Antarctica * * Campaign: CRP-1 * * Basis: Sampling/drilling ice * * Device: Core wireline system (CWS) * * Comment: sea ice thickness: 1.60 m, recovery 86 %. Age and lithology of oldest strata: 22-24 Ma; mudstone with scattered pebbles.
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rock *DepthmGeocode
2Depth, top/min *Depth topmJarrard, Richard D *
3Depth, bottom/max *Depth botmJarrard, Richard D *
4Density, wet bulk *WBDg/cm3Jarrard, Richard D *Calculated from weight/volume *
5Porosity *Poros% volJarrard, Richard D *Calculated from weight/volume *fractional
6Density, grain *Density graing/cm3Jarrard, Richard D *Calculated from weight/volume *
7Susceptibility, volume *kappa10-6 SIJarrard, Richard D *Susceptibility unit Kappabridge KLY-2 *
8Velocity, compressional wave *Vpm/sJarrard, Richard D *
9Velocity, shear wave *Vsm/sJarrard, Richard D *
10Velocity, compressional/shear wave ratio *Vp/VsJarrard, Richard D *Calculated *
139 data points

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