Shear band foliation as an indicator of sense of shear: Field observations in central Spain

Abstract

Research Article| October 01, 1984 Shear band foliation as an indicator of sense of shear: Field observations in central Spain Ruud Weijermars; Ruud Weijermars 1Geologiska Institutionen, Mineralogisk-Petrologiska Avdelningen, Uppsala Universitet, Box 555, S-751 22 Uppsala, Sweden Search for other works by this author on: GSW Google Scholar Harm E. Rondeel Harm E. Rondeel 2Geologisch Instituut, vakgroep Structurele Geologie, Universiteit van Amsterdam, Nieuwe Prinsengracht 130, 1018 VZ Amsterdam, Netherlands Search for other works by this author on: GSW Google Scholar Geology (1984) 12 (10): 603–606. https://doi.org/10.1130/0091-7613(1984)12<603:SBFAAI>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ruud Weijermars, Harm E. Rondeel; Shear band foliation as an indicator of sense of shear: Field observations in central Spain. Geology 1984;; 12 (10): 603–606. doi: https://doi.org/10.1130/0091-7613(1984)12<603:SBFAAI>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Macizo de Nevera, a Paleozoic basement inlier surrounded by essentially flat-lying Mesozoic cover rocks of central Spain, exhibits an extremely consistent system of steep, dextral strike-slip faults. Different faults have a variable amount of displacement, but their en echelon arrangement and similar sense of displacement imply a cogenetic origin. A maximum displacement of 1.0 km, corresponding to an averaged angular shear strain of 1.5 and peak values of 6.6, occurs along the central part of the 6-km-long Truchas ductile shear zone. An early axial-plane cleavage is locally deflected into the Truchas shear zone and superposed by coarse shear band foliation. The consistent angular relationship between the new foliation and the shear zone boundary confirms the megascopic sense of shear. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.