Petrophysical measurements on core plug samples of sediment core CRP-1 (Table 1)

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.

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

Metadata Access
Creator Brink, Jason; Jarrard, Richard D
Publisher PANGAEA
Publication Year 1998
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 139 data points
Discipline Earth System Research
Spatial Coverage (163.755 LON, -77.008 LAT); off Cape Roberts, Ross Sea, Antarctica
Temporal Coverage Begin 1997-10-17T01:30:00Z
Temporal Coverage End 1997-10-24T02:00:00Z