Einsele, Gerhard (1982): (Table 1) Sound velocity, wet-bulk density, and acoustic impedance of some indurated sediment from DSDP Leg 64 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.818316, Supplement to: Einsele, G (1982): Mass physical properties of Pliocene to Quaternary sediment in the Gulf of California, Deep Sea Drilling Project Leg 64. In: Curray, JR; Moore, DG; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 64, 529-542, https://doi.org/10.2973/dsdp.proc.64.108.1982
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Abstract:
The Pliocene-Quaternary sediments that we drilled at eight sites in the Gulf of California consist of silty clays to clayey silts, diatomaceous oozes, and mixtures of both types. In this chapter I have summarized various measurements of their physical properties, relating this information to burial depth and effective overburden pressure. Rapid deposition and frequent intercalations of mud turbidites may cause underconsolidation in some cases; overconsolidation probably can be excluded. General lithification begins at depths between 200 and 300 meters sub-bottom, at porosities between 55 and 60% (for silty clays) and as high as 70% (for diatomaceous ooze). Diatom-rich sediments have low strength and very high porosities (70-90%) and can maintain this state to a depth of nearly 400 meters (where the overburden pressure = 1.4 MPa). The field compressibility curves of all sites are compared to data published earlier. Where sediments are affected by basaltic sills, these curves clearly show the effects of additional loading and thermal stress (diagenesis near the contacts). Strength measurements on well-preserved hydraulic piston cores yielded results similar to those obtained on selected samples from standard drilling. Volumetric shrinkage dropped to low values at 100 to 400 meters burial depth (0.3 to 2.0 MPa overburden pressure). Porosity after shrinkage depends on the composition of sediments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 25.625760 * Median Longitude: -110.519700 * South-bound Latitude: 22.959300 * West-bound Longitude: -111.624800 * North-bound Latitude: 27.846000 * East-bound Longitude: -108.978000
Date/Time Start: 1978-12-02T00:00:00 * Date/Time End: 1979-01-03T00:00:00
Minimum Elevation: -3022.0 m * Maximum Elevation: -747.0 m
Event(s):
64-474A * Latitude: 22.959300 * Longitude: -108.978000 * Date/Time: 1978-12-02T00:00:00 * Elevation: -3022.0 m * Penetration: 626 m * Recovery: 290.1 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 49 cores; 453 m cored; 9.5 m drilled; 64 % recovery
64-476 * Latitude: 23.040500 * Longitude: -109.089200 * Date/Time: 1978-12-14T00:00:00 * Elevation: -2403.0 m * Penetration: 297.5 m * Recovery: 167 m * Location: North Pacific/Gulf of California/TERRACE * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 33 cores; 336 m cored; 0 m drilled; 49.7 % recovery
64-477A * Latitude: 27.030000 * Longitude: -111.398800 * Date/Time: 1978-12-18T00:00:00 * Elevation: -2003.0 m * Penetration: 267 m * Recovery: 16 m * Location: North Pacific/Gulf of California/BASIN * Campaign: Leg64 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 111 m cored; 9.5 m drilled; 14.4 % 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 | Sample code/label | Sample label | Einsele, Gerhard | DSDP/ODP/IODP sample designation | ||
| 6 | Rock type | Rock | Einsele, Gerhard | |||
| 7 | Quality of orientation | Q orientation | Einsele, Gerhard | |||
| 8 | Sonic velocity | Sonic vel | km/s | Einsele, Gerhard | Hamilton frame velocimeter, Boyce (1976) | |
| 9 | Density, wet bulk | WBD | g/cm3 | Einsele, Gerhard | see reference(s) | |
| 10 | Impedance, specific | Impedance | kg/cm2/s | Einsele, Gerhard | Acoustic |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
60 data points