Hein, James R; Vallier, Tracy L; Allan, Mary Ann (1981): (Appendix) Occurrence and abundance of chert and porcellanite in cores recovered during DSDP Leg 62 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.819706, In supplement to: Hein, JR et al. (1981): Chert petrology and geochemistry, Mid-Pacific Mountains and Hess Rise, 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, 711-748, https://doi.org/10.2973/dsdp.proc.62.129.1981
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Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 32.608580 * Median Longitude: 177.130060 * South-bound Latitude: 21.350200 * West-bound Longitude: 173.888800 * North-bound Latitude: 39.860700 * East-bound Longitude: 179.255700
Date/Time Start: 1978-08-02T00:00:00 * Date/Time End: 1978-08-28T00:00:00
Minimum DEPTH, sediment/rock: 1.0 m * Maximum DEPTH, sediment/rock: 822.5 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
62-464 * Latitude: 39.860700 * Longitude: 173.888800 * Date/Time: 1978-08-17T00:00:00 * Elevation: -4637.0 m * Penetration: 308.5 m * Recovery: 77.6 m * Location: North Pacific/CONT RISE * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 34 cores; 308.5 m cored; 0 m drilled; 25.2 % recovery
62-465 * Latitude: 33.820500 * Longitude: 178.919000 * Date/Time: 1978-08-23T00:00:00 * Elevation: -2161.0 m * Penetration: 96 m * Recovery: 44.2 m * Location: North Pacific/CONT RISE * Campaign: Leg62 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 96 m cored; 0 m drilled; 46 % recovery
Comment:
Sediment depth is given in mbsf. The abundance of chert in the core is a qualitative estimate based on the amount and type of recovered sediment, the drilling time, torque and pump pressure of coring as determined from the drilling log, experience of the drilling crew, and discussions with the drilling crew during coring attempts. Rare (R) generally means the recovery of only a few fragments of chert (< 1%) within a high-recovery calcareous sediment core, or the recovery of a few fragments when other factors indicate the near absence of chert (fast drill time, low torque, low pump pressure). Common (C) shows a higher percentage of chert in the core (1-10%) and (or) high drill time, high and steady torque, and possibly high pump pressure. Abundant (A) generally indicates that at least 10% of a drilled sequence consists of chert, as shown by high chert percentages in the recovered sediment, and high drill time, torque, and pump pressure. A dash indicates the absence of chert.
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 | Hein, James R | DSDP/ODP/IODP sample designation | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 7 | Recovery | Recovery | % | Hein, James R | ||
| 8 | Lithology/composition/facies | Lithology | Hein, James R | NO, nannofossil ooze; NC, nannofossil chalk; LS, limestone; SC, siliceous-fossil clay or clayey diatom ooze; BC, brown clay; and CH, chert and porcellanite | ||
| 9 | Stage | Stage | Hein, James R | |||
| 10 | Chert | Chert | Hein, James R |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1090 data points