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Diffusimetry (diffusion constant estimation) on sediment cores by resistivity probe

Initial reports of the Deep Sea Drilling Project

By:
and
DOI: 10.2973/dsdp.proc.22.132.1974

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Abstract

Measurement of formation factor (ratio of rock resistivity to interstitial water resistivity) from sediment cores provides an indirect measurment of the tortuosity of the fluid channels in the sediments. From these measurements one can estimate the diffusion coefficient of the sediment with depth. The F (formation factor) values for Indian Ocean sediments varied from 1.6 for a clayey diatom ooze having 87% porosity (70% water content) to 13.6 for a cemented limestone having 25% porosity (11% water content). These formation factors would yield diffusion coefficients for chloride ions in the corresponding sediments of 6.4 x 10-6 to 1.5 x 10-6 cm2/sec. In general, surficial sediments showed diffusion coefficients about one-half to one-third of those for free solution, values decreasing with depth and porosity.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Diffusimetry (diffusion constant estimation) on sediment cores by resistivity probe
Series title:
Initial reports of the Deep Sea Drilling Project
DOI:
10.2973/dsdp.proc.22.132.1974
Volume
22
Year Published:
1974
Language:
English
Publisher:
Integrated Ocean Drilling Program Management International
Publisher location:
College Station, TX
Contributing office(s):
Coastal and Marine Geology Program
Description:
8 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Initial reports of the Deep Sea Drilling Project
First page:
663
Last page:
670
Other Geospatial:
Indian Ocean