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Inter-layered clay stacks in Jurassic shalesScanning electron microscopy in the backscattered electron mode is used together with energy-dispersive X-ray microanalysis to show that Lower Jurassic shales from the North Sea Basin contain large numbers of clay mineral stacks up to 150 microns in size. Polished shale sections are examined to determine the size, shape orientation, textural relationships, and internal compositional variations of the clays. Preliminary evidence that the clay stacks are authigenic, and may have formed at shallow burial depths during early diagenesis, is presented.
Document ID
19830063842
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Pye, K. (Cambridge University Cambridge, United Kingdom)
Krinsley, D. H. (Arizona State University Tempe, AZ, United States)
Date Acquired
August 11, 2013
Publication Date
August 18, 1983
Publication Information
Publication: Nature
Volume: 304
ISSN: 0028-0836
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-24
CONTRACT_GRANT: NAG2-174
Distribution Limits
Public
Copyright
Other