Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

A long-spaced, DC electrical resistivity experiment was run during Leg 109, through over 400m of the upper oceanic crust in Hole 395A. The same experiment had been run during Leg 83 in Hole 504B, and the results from the two holes are compared. Apparent crustal resistivities are about 30ohm-m through most of the pillow lavas cored in Hoel 395A, and increase to about 300ohm-m at the base of a thick unit of sealed pillows near the bottom of the hole. A cyclic downhole variation of resistivity with a wavelength of 20-100m correlates with the main lithologic units; within each unit, resistivity increases and porosity decreases with depth. Bulk porosities in Hole 395A were estimated by applying Archie's Law, and range from 10%-15% in the uppermost pillows to about 4% in the resistive unit near the bottom of the hole. -from Author

Original languageEnglish (US)
Title of host publicationProc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge
EditorsR.S. Detrick, J. Honnorez, W.B. Bryan, T. Juteau
PublisherODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon
Pages205-212
Number of pages8
StatePublished - 1990

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upper crust
oceanic crust
electrical resistivity
porosity
experiment
wavelength

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Becker, K. (1990). Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A. In R. S. Detrick, J. Honnorez, W. B. Bryan, & T. Juteau (Eds.), Proc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge (pp. 205-212). ODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon.

Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A. / Becker, Keir.

Proc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge. ed. / R.S. Detrick; J. Honnorez; W.B. Bryan; T. Juteau. ODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, 1990. p. 205-212.

Research output: Chapter in Book/Report/Conference proceedingChapter

Becker, K 1990, Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A. in RS Detrick, J Honnorez, WB Bryan & T Juteau (eds), Proc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge. ODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, pp. 205-212.
Becker K. Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A. In Detrick RS, Honnorez J, Bryan WB, Juteau T, editors, Proc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge. ODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon. 1990. p. 205-212
Becker, Keir. / Large-scale electrical resistivity and bulk porosity of the upper oceanic crust at Hole 395A. Proc., Scientific results, ODP, Legs 106/109, Mid-Atlantic Ridge. editor / R.S. Detrick ; J. Honnorez ; W.B. Bryan ; T. Juteau. ODP, Texas A&M University, College Station; UK distributors, IPOD Committee, NERC, Swindon, 1990. pp. 205-212
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