Pisias, Nicklas G; Prell, Warren L (1985): Calcium carbonate, sedimentation and mass accumulation rates at DSDP Site 85-572 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803377, Supplement to: Pisias, NG; Prell, WL (1985): High resolution carbonate records from the hydraulic piston cored section of Site 572. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Print Office), 85, 711-722, https://doi.org/10.2973/dsdp.proc.85.119.1985
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
At Site 572, located at 1°N, 114° W (3903 m water depth), we recovered a continuous hydraulic piston cored section of upper Miocene to upper Pleistocene pelagic sediments. The sediment is composed of biogenic carbonate and silica with nonbiogenic material as a minor component. Detailed analysis of the calcium carbonate content shows that the degree of variability in carbonate deposition apparently changed markedly between the late Miocene and Pliocene at this equatorial Pacific site. During this interval carbonate mass accumulation rates decreased from 2.6 to 0.8 g/cm**2 per 10**3 yr. If we assume that variations in CaCO3 content reflect changes in the degree of dissolution, then the detailed carbonate analysis would suggest that the degree of variability in carbonate deposition decreases by a factor of 5 as the dominant wavelength of variations increases significantly. However, if the variability in carbonate concentration is described in terms of changes in mean mass accumulation, calculations then suggest that relatively small changes in noncarbonate rates may be important in controlling the observed carbonate records. In addition, the analysis suggests that the degree of variability observed in pelagic carbonate data may in part reflect total accumulation rates. Intervals with high sedimentation rates show lower amplitude variations in concentration than intervals with lower sedimentation rates for the same degree of change in the carbonate accumulation rate.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 1.434800 * Longitude: -113.842000
Date/Time Start: 1982-03-22T00:00:00 * Date/Time End: 1982-03-22T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Pisias, NG; Prell, WL (1985): (Table 1) Sedimentation and mass accumulation rates at DSDP Site 85-572. https://doi.org/10.1594/PANGAEA.803375
- Pisias, NG; Prell, WL (1985): (Table 2) Calcium carbonate at DSDP Site 85-572. https://doi.org/10.1594/PANGAEA.803376