pencil cleavage

pencil cleavage

[′pen·səl ‚klē·vij]
(geology)
Cleavage in which fracture produces long, slender pieces of rock.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Primary crenulation pencil cleavage. Journal of Structural Geology, 11, pp.
Cleavages developed in mudstone during diagenesis and deformation: an example from the Carboniferous (Tournaisian), southeastern New Brunswick, Canada
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