Accession Number : ADA326937

Title :   Evolution of Fracture Networks in the Upper Oceanic Crust.

Descriptive Note : Final rept.,

Corporate Author : WOODS HOLE OCEANOGRAPHIC INSTITUTION MA

Personal Author(s) : Thompson, Geoffrey ; Gillis, Kathryn M.

PDF Url : ADA326937

Report Date : 1997

Pagination or Media Count : 4

Abstract : The long term objective of this project was to establish realistic geologic constraints on the variables which contribute to the seismic signal in the upper oceanic crust, and to determine how these variables evolve with age. To begin to address this problem, our short term objective was to characterize the nature of porosity in a section of oceanic crust exposed in the Troodos Ophiolite, Cyprus. By comparing the distribution of volcanic morphologies and their inherent porosity to the distribution of void filling secondary minerals, we evaluated how porosity created by crustal accretion is modified by alteration as a section of crust ages.

Descriptors :   *POROSITY, *SEISMIC VELOCITY, *OCEANIC CRUST, MORPHOLOGY, VOIDS, FRACTURE(MECHANICS), MINERALS, FILLING, VOLCANOES, CYPRUS.

Subject Categories : Physical and Dynamic Oceanography
      Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE