Calculation of mass accumulation rates in the absence of density or porosity measurements

Author(s): Sykes, T. J. S.; Ramsay, A. T. S.
Author Affiliation(s): Primary:
University of Wales, Marine Geosciences Research Group, Cardiff, United Kingdom
Volume Title: Marine Geology
Source: Marine Geology, 122(3), p.173-179. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0025-3227 CODEN: MAGEA6
Note: In English. Letter; PALSOS Contrib. No. 1. 11 refs.; illus., incl. 2 tables
Summary: Synthetic mass accumulation rates have been calculated for ODP Site 707 using depth-density and depth-porosity functions to estimate values for these parameters with increasing sediment thickness, at 1 Ma time intervals determined on the basis of published microfossil datums. These datums were the basis of the age model used by Peterson and Backman (1990) to calculate actual mass accumulation rate data using density and porosity measurements. A comparison is made between the synthetic and actual mass accumulation rate values for the time interval 37 Ma to the Recent for 1 Myr time intervals. There is a correlation coefficient of 0.993 between the two data sets, with an absolute difference generally less than 0.1 g/cm2/kyr. We have used the method to extend the mass accumulation rate analysis back to the Late Paleocene (60 Ma) for Site 707. Providing age datums (e.g. fossil or magnetic anomaly data) are available the generation of synthetic mass accumulation rates can be calculated for any sediment sequence.
Year of Publication: 1995
Research Program: ODP Ocean Drilling Program
Key Words: 07 Marine Geology and Oceanography; Cenozoic; Deep-sea sedimentation; Depth; Indian Ocean; Leg 115; Marine sedimentation; Marine sediments; ODP Site 707; Ocean Drilling Program; Porosity; Quaternary; Sedimentation; Sedimentation rates; Sediments; Theoretical studies; Thickness; West Indian Ocean
Coordinates: S073244 S073243 E0590101 E0590100
Record ID: 1995021399
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands