Atlas of Structural Geology by Mukherjee Soumyajit;
Author:Mukherjee, Soumyajit;
Language: eng
Format: epub
Publisher: Elsevier Science
Published: 2015-05-05T05:20:11+00:00
Figure 3.30 A vertical fault with slickenside indicates oblique stylolites, also called slickolites.
Depending on the conditions in brittle deformation, soluble rock minerals, such as carbonates in this case, may dissolve from rough fault planes from facets involved with contraction during the fault slip to create oblique stylolites as pressure-solution seams. Oblique stylolites are asymmetric features that reveal slip sense, with the picks of stylolites at low-angle to the fault plane pointing the slip direction as incongruous steps (Hancock, 1985). This picture evidences a strike-slip fault slickenside with horizontal striae, specifically (personal observation). The fault plane is at right-angle to horizontal bedding plane of local strata and indicates a dextral slip. Picture spans ∼15-cm width. Photographed by N. Kasch from a NNW-SSE-trending fault plane in the Thuringian Forest, within mid-Triassic shell-bearing limestone of the Muschelkalk lithostratigraphic unit, Germany. (Payman Navabpour)
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