Moore, Theodore C (2008): (Table DR1) Biogenic silica and chert in the Pacific Ocean, DSDP and ODP data [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.723883, Supplement to: Moore, TC (2008): Biogenic silica and chert in the Pacific Ocean. Geology, 36(12), 975-978, https://doi.org/10.1130/G25057A.1
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2008 (exact date unknown) • DOI registered: 2009-08-10
Abstract:
Evidence for the dissolution of biogenic silica at the base of pelagic sections supports the hypothesis that much of the chert formed in the Pacific derives from the dissolution and reprecipitation of this silica by hydrothermal waters. As ocean bottom waters flow into and through the crust, they become warmer. Initially they remain less saturated with respect to dissolved silica than pore water in the overlying sediments. With the diffusion of heat, dissolved ions, and to some extent the advection of water itself, biogenic silica in the basal part of the sedimentary section is dissolved. Upon conductively cooling, these pore waters precipitate chert layers. The most common thickness for the basal silica-free zone (20 m) lies below the most common height of the top of the chert interval above basement (50 m). This mode of chert formation explains the frequent occurrence of chert layers at very shallow subbottom depths in pelagic sections of the Pacific. It is also consistent with the common occurrence of cherts </=150 m above basement.
Other version:
Table DR1 - Biogenic Silica and Chert in the Pacific Ocean [dataset]. ftp://rock.geosociety.org/pub/reposit/2008/2008243.pdf
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 7.818637 * Median Longitude: -152.910655 * South-bound Latitude: -63.680700 * West-bound Longitude: 124.650800 * North-bound Latitude: 39.961800 * East-bound Longitude: -69.355800
Date/Time Start: 1969-04-23T00:00:00 * Date/Time End: 2002-11-14T00:00:00
Minimum Elevation: -6100.0 m * Maximum Elevation: -1389.0 m
Event(s):
5-34 * Latitude: 39.470200 * Longitude: -127.275700 * Date/Time: 1969-04-23T00:00:00 * Elevation: -4322.0 m * Penetration: 384 m * Recovery: 102.2 m * Location: North Pacific/PLAIN * Campaign: Leg5 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 17 cores; 126 m cored; 0 m drilled; 81.1 % recovery
7-66 * Latitude: 2.393500 * Longitude: -166.121800 * Date/Time: 1969-09-19T00:00:00 * Elevation: -5310.0 m * Penetration: 193 m * Recovery: 48.8 m * Location: North Pacific/BASIN * Campaign: Leg7 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 72 m cored; 0 m drilled; 67.7 % recovery
15-146 * Latitude: 15.116500 * Longitude: -69.377800 * Date/Time: 1970-12-22T00:00:00 * Elevation: -3949.0 m * Penetration: 762 m * Recovery: 145.3 m * Location: Caribbean Sea/BASIN * Campaign: Leg15 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 370 m cored; 4 m drilled; 39.3 % 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 | Depth, top/min | Depth top | m | Moore, Theodore C | of chert interval | |
| 6 | Layer thickness | Thickness | m | Moore, Theodore C | thickness of chert interval | |
| 7 | Age, minimum/young | Age min | ka | Moore, Theodore C | top of chert interval | |
| 8 | Age, maximum/old | Age max | ka | Moore, Theodore C | base of chert interval | |
| 9 | Depth, bottom/max | Depth bot | m | Moore, Theodore C | base of silic microfossils, mbsf | |
| 10 | Depth, bottom/max | Depth bot | m | Moore, Theodore C | basement depth, mbsf | |
| 11 | Difference | Diff | Moore, Theodore C | basement depth - base of silic microfossils, m | ||
| 12 | Age, dated | Age dated | ka | Moore, Theodore C | basement age |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
408 data points