Diester-Haass, Lieselotte; Meyers, Philip A; Rothe, Peter (1986): (Table 1) CaCO3, terrigenous matter and Corg calculations from DSDP Hole 75-532B [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.761062, Supplement to: Diester-Haass, L et al. (1986): Light-dark cycles in opal-rich sediments near the Plio-Pleistocene boundary, DSDP Site 532, Walvis Ridge continental terrace. Marine Geology, 73(1-2), 1-23, https://doi.org/10.1016/0025-3227(86)90108-8
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Samples taken at 10 cm intervals from DSDP Core 532B-17 contain variations in carbonate, opal, organic carbon, and terrigenous components that correlate with light-dark cycles in sediment color. The core site, at 1300 m water depth, is well above the CCD, yet the color variations appear to result largely from cyclical fluctuations in carbonate dissolution, which was greater during glacial periods. Higher concentrations of organic carbon and of terrigenous sediment components correlate with enhanced carbonate dissolution, but opal concentrations inversely correlate and suggest that biological productivity at this site diminished during glacial periods. A complicated glacial-interglacial picture emerges from the data. In interglacial times, upwelling associated with the Benguela Current produced abundant opaline material, organic matter was fairly well preserved, and carbonate was only moderately dissolved. In glacial times, the upwelling core shifted as sea level fell and winds intensified. Productivity in the waters over Site 532 decreased, but lateral supply of oxidizable organic matter enhanced carbonate dissolution, giving rise to light-dark cycles in these sediments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -19.744300 * Longitude: 10.518800
Date/Time Start: 1980-08-20T00:00:00 * Date/Time End: 1980-08-20T00:00:00
Minimum Elevation: -1331.0 m * Maximum Elevation: -1331.0 m
Event(s):
75-532B * Latitude: -19.744300 * Longitude: 10.518800 * Date/Time: 1980-08-20T00:00:00 * Elevation: -1331.0 m * Penetration: 291.3 m * Recovery: 264.9 m * Location: South Atlantic Ocean * Campaign: Leg75 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 72 cores; 284.3 m cored; 7 m drilled; 93.2 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Diester-Haass, Lieselotte | DSDP/ODP/IODP sample designation | ||
| 2 | Calcium carbonate | CaCO3 | % | Diester-Haass, Lieselotte | ||
| 3 | Loss | Loss | % | Diester-Haass, Lieselotte | Loss = % loss in CaCO3, calculated after the equation of Dean et al. (1981, doi:10.1016/0025-3227(81)90029-3) | |
| 4 | Terrigenous | Terr | % | Diester-Haass, Lieselotte | Grain size, sieving | |
| 5 | Terrigenous | Terr | % | Diester-Haass, Lieselotte | Calculated | |
| 6 | Ratio | Ratio | % | Diester-Haass, Lieselotte | tm/tc = terrigenous matter (measured) / terrigenous matter (calculated) | |
| 7 | Carbon, organic, total | TOC | % | Diester-Haass, Lieselotte | ||
| 8 | Carbon, organic, total | TOC | % | Diester-Haass, Lieselotte | Calculated | |
| 9 | Ratio | Ratio | % | Diester-Haass, Lieselotte | Cm/Cc = Corg (measured) / Corg (calculated) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
306 data points