Pliocene-Recent marine sediments, recovered at site 1125 by ODP Leg 181 on the eastern New Zealand margin, were subjected to laboratory consolidation tests and analyzed by scanning electron microscopy (SEM) before and after consolidation test. The primary objective of this study is to document the effects of consolidation on microfabric and petro-physical properties. X-ray diffraction and grain-size distribution data indicate that the samples are mineralogically and texturally similar and thus are ideal for the present study on the role of consolidation solely on petrophysical properties. Porosity was measured before and after each consolidation test, and permeability was estimated indirectly based on the theoretical method. SEM photomicrographs show details of changes of pore geometry and distribution after the consolidation test that account for the porosity loss.
Bibliographical noteFunding Information:
Received 15 November 1999; accepted 20 April 2000. The authors thank the Integrated Reservoir Investigation Project, Texas A&M University, and the Ocean Drilling Program for financial support and sample availability for this study. This work was also partly supported by a Joint Oceanographic Institution grant. Address correspondence to Jin-Wook Kim, Dept. of Geology and Geophysics, Texas A&M Uni- versity, College Station, TX 77840, U.S.A. e-mail: Kim@geo.tamu.edu
All Science Journal Classification (ASJC) codes
- Geotechnical Engineering and Engineering Geology
- Ocean Engineering