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Glaucophane Fabric in the Cover of the Monte Rosa Nappe, Zermatt–Saas Fee, Southwest Switzerland

1974; Geological Society of America; Volume: 85; Issue: 6 Linguagem: Inglês

10.1130/0016-7606(1974)85 2.0.co;2

1943-2674

Brian Chadwick,

Geological and Geophysical Studies Worldwide

Research Article| June 01, 1974 Glaucophane Fabric in the Cover of the Monte Rosa Nappe, Zermatt–Saas Fee, Southwest Switzerland BRIAN CHADWICK BRIAN CHADWICK 1Department of Geology, The University, North Park Road, Exeter, EX4 4QE Devonshire, U.K. Search for other works by this author on: GSW Google Scholar GSA Bulletin (1974) 85 (6): 907–910. https://doi.org/10.1130/0016-7606(1974)85 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 BRIAN CHADWICK; Glaucophane Fabric in the Cover of the Monte Rosa Nappe, Zermatt–Saas Fee, Southwest Switzerland. GSA Bulletin 1974;; 85 (6): 907–910. doi: https://doi.org/10.1130/0016-7606(1974)85 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 SocietyGSA Bulletin Search Advanced Search Abstract To satisfy experimental data of phase equilibria and rock strength, current plate-tectonic models suggest that blueschist parageneses in Mesozoicophiolites in mountain belts may have formed in subduction-zone environments. However, structural geometry and estimates of overburden thickness in the region of the Mischabel backfold in the western Alps suggest that mesoscopic linear fabrics of glaucophane and other minerals formed at a relatively shallow depth during backfolding. They either grew syntectonically or were rotated as pre-existing minerals into a preferred linear orientation. It is proposed that the glaucophane lineation formed during the Barrovian Lepontine phase of Alpine metamorphism late in, or after, the northward transport of the Monte Rosa nappe, which in turn moved after obduction of its Mesozoic envelope of oceanic ophiolites (with its blueschist parageneses formed in a Tethyan subduction zone) onto European sialic crust that now forms the core of this nappe. 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.