Fujii, Naoyuki (1981): (Table 1) Compressional-wave velocities and anisotropies and wet-bulk densities of calcareous rocks and some cherts at DSDP Holes 62-463 and 62-465A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.819821, Supplement to: Fujii, N (1981): Anisotropy in compressional-wave velocities and wet-bulk densities of calcareous sedimentary rocks, Deep Sea Drilling Project Leg 62. In: Thiede, J; Vallier, TL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 62, 995-998, https://doi.org/10.2973/dsdp.proc.62.156.1981
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Abstract:
Anisotropy in compressional-wave velocities in sedimentary rocks recovered by DSDP has been recognized by several investigators (Boyce, 1976; Tucholke et al., 1976; Carlson and Christensen, 1977). The anisotropy is also observed at elevated pressures in laboratory experiments, and thus probably persists at depth in some calcareous rocks (Schreiber et al., 1972; Christensen et al., 1973; Carlson and Christensen, 1979). Carlson and Christensen (1979) suggested that the observed velocity anisotropy was produced not by the alignment of cracks but by the alignment of c axes of calcite perpendicular to bedding during compaction, diagenesis, and recrystallization.
On DSDP Leg 62, calcareous rocks were recovered from the western Mid-Pacific Mountains (sub-bottom depths of 452-823 m, Site 463) and southern Hess Rise (276-412 m, Site 465). Most of the calcareous rocks are horizontally laminated and color-banded, and ages are early Cenomanian to late Barremian (Site 463 and 465 reports, this volume).
The purpose of this study is to confirm the velocity anisotropy in the calcareous rocks and to identify any relationship of anistropy to bulk density, mean velocity, and burial depth.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 27.585350 * Median Longitude: 176.793400 * South-bound Latitude: 21.350200 * West-bound Longitude: 174.667800 * North-bound Latitude: 33.820500 * East-bound Longitude: 178.919000
Date/Time Start: 1978-08-02T00:00:00 * Date/Time End: 1978-08-23T00:00:00
Minimum Elevation: -2525.0 m * Maximum Elevation: -2161.0 m
Event(s):
62-463 * Latitude: 21.350200 * Longitude: 174.667800 * Date/Time: 1978-08-02T00:00:00 * Elevation: -2525.0 m * Penetration: 822.5 m * Recovery: 305.5 m * Location: North Pacific/SEAMOUNT * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 92 cores; 820.5 m cored; 0 m drilled; 37.2 % recovery
62-465A * Latitude: 33.820500 * Longitude: 178.919000 * Date/Time: 1978-08-23T00:00:00 * Elevation: -2161.0 m * Penetration: 476 m * Recovery: 98.9 m * Location: North Pacific/CONT RISE * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 408.5 m cored; 9.5 m drilled; 24.2 % recovery
Comment:
Empty cells = no data.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Fujii, Naoyuki | DSDP/ODP/IODP sample designation | ||
| 3 | Velocity, compressional wave | Vp | m/s | Fujii, Naoyuki | Hamilton frame velocimeter, Boyce (1976) | Vv; Direction of compressional-wave propagation parallel to the core axis, (i.e., vertical) |
| 4 | Velocity, compressional wave | Vp | m/s | Fujii, Naoyuki | Hamilton frame velocimeter, Boyce (1976) | Vh1; Directions of compressional-wave propagation mutually perpendicular to the core axis |
| 5 | Velocity, compressional wave | Vp | m/s | Fujii, Naoyuki | Hamilton frame velocimeter, Boyce (1976) | Vh2; Directions of compressional-wave propagation mutually normal to the core axis |
| 6 | Velocity, compressional wave anisotropy | Vp anisotropy | % | Fujii, Naoyuki | Hamilton frame velocimeter, Boyce (1976) | Anisotropy is defined as 2(Vh - Vv)/(Vh + Vv), where Vh and Vv are the directions of compressional-wave propagation normal to and parallel to the core axis, respectively; when Vh1 and Vh2 are measured, Vh = (Vh1 + Vh2)/2 |
| 7 | Density, wet bulk | WBD | g/cm3 | Fujii, Naoyuki | Gamma-ray attenuation porosity evaluator (GRAPE) | |
| 8 | Density, wet bulk | WBD | g/cm3 | Fujii, Naoyuki | Gravimetric analysis | |
| 9 | Comment | Comment | Fujii, Naoyuki |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
579 data points