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High-pressure consolidation of kaolinitic clay

D. C. Wijeyesekera and M. H. De Freitas
High-pressure consolidation of kaolinitic clay
AAPG Bulletin (February 1976) 60 (2): 293-298


Remolded and undisturbed samples of kaolinitic clay were compacted to maximum pressures ranging from 2,000 psi (140 kg/sq cm) to 6,500 psi (455 kg/sq cm) to observe changes in the fabric of the sample and chemistry of the expelled pore fluid. Samples were tested in high-pressure equipment specially designed to simulate aspects of geologic burial. The concentration of ions in the expelled pore water changed as compaction progressed, the major change being concurrent with the fall in pore-fluid pressure. Crystallization was present in the pores. The development of a preferred orientation clearly was associated with the level of effective stress. High pore pressures were associated with poorly oriented fabrics and incipient fissures.

ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 60
Serial Issue: 2
Serial Info: Special AAPG Foundation issue
Title: High-pressure consolidation of kaolinitic clay
Pages: 293-298
Published: 197602
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Accession Number: 1976-028131
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. table
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1976
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