A “giant” plumose marking in paleozoic sandstones from Sinai

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Description of an uncommonly large plumose marking on a joint surface of about 50 × 27 m from Paleozoic sandstones in Sinai is presented. This joint is a consequence of crack propagation from a single fracture, rather than a series of fractures. An analysis of the joint system permits one to infer a multi-stage process of fracture and tilting in the history of this rock during the Neogene uplifts. The analogy drawn from brittle fracture experimentation suggests that tensile bending was the dominant cause of fracture which resulted in this joint. Hence, the application of plumose marking to tectonic interpretation is expanded to larger scales than before.

Original languageEnglish
Pages (from-to)T1-T7
Issue number1-2
StatePublished - 1 Jan 1980


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