Microfracturing in relation to atomic structure of plagioclase from a deformed meta-anorthosite

Saved in:
Online Access: Get full text
doi: 10.1016/0191-8141(84)90067-1
Authors:Brown, William L.; Macaudière, Jean
Author Affiliations:Primary:
Univ. Nancy, Lab. Petrol.-Geochim., Vandoeuvre-les-Nancy, France
Other:
E.N.S.G., Lab. Petrol., France
Volume Title:Journal of Structural Geology
Source:Journal of Structural Geology, 6(5), p.579-586. Publisher: Pergamon, Oxford-New York, International. ISSN: 0191-8141
Publication Date:1984
Note:In English; illus.
Summary:Analysis of Caledonian brittle deformation of the Harris meta-anorthosite and of experimentally shocked microcline and other deformed feldspars reveals that the orientation of micro-fractures always lies close to the cleavage directions. Unusual fracture orientations are also found to correspond with less common (experimentally shock-induced) cleavage directions. This analysis suggests that plagioclase fracture occurs along the deformation bands parallel to dislocation glide planes. [M.E.J.]
Subjects:Alkali feldspar; Caledonian Orogeny; Cracks; Crystal dislocations; Deformation; Ductility; Feldspar group; Field studies; Fractures; Framework silicates; Meta-anorthosite; Metaigneous rocks; Metamorphic rocks; Microcline; Microcracks; Mylonites; Paleoproterozoic; Paleozoic; Plagioclase; Precambrian; Proterozoic; Pseudotachylite; Silicates; Structural analysis; Structural geology; Style; Undulatory extinction; Upper Precambrian; Europe; Great Britain; Scotland; United Kingdom; Western Europe; Deformation bands; Harris Meta-anorthosite; Intracrystalline fractures; Mechanical twinning; Shear fractures; Slip planes; Transcrystalline fractures
Coordinates:N544000 N610000 W0004500 W0083000
Abstract Numbers:85M/2380
Record ID:1985013875
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!