Some Speculations on the Nature of High-Angle Grain Boundaries in Quartz Rocks
- B.E. Hobbs and
- H.C. Heard
Published Online: 18 MAR 2013
Copyright 1986 by the American Geophysical Union.
Mineral and Rock Deformation: Laboratory Studies: The Paterson Volume
How to Cite
McLaren, A. C. (1986) Some Speculations on the Nature of High-Angle Grain Boundaries in Quartz Rocks, in Mineral and Rock Deformation: Laboratory Studies: The Paterson Volume (eds B.E. Hobbs and H.C. Heard), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM036p0233
- Published Online: 18 MAR 2013
- Published Print: 1 JAN 1986
Print ISBN: 9780875900629
Online ISBN: 9781118664353
- Rocks—Testing—Addresses, essays, lectures;
- Rock deformation—Addresses, essays, lectures
The essential features of the current models of the structure of high-angle grain boundaries in cubic metals are reviewed and applied to a number of the known (as well as some postulated) inclined-axis twins of quartz. It is shown that for these twins, coincidence site lattices (CSLs) exist and that the twin and composition planes are often parallel to the plane of highest density of coincidence sites. Models of boundaries are suggested. The evidence for the existence in quartz rocks of special grain boundaries based on these CSLs is discussed and directions for future research indicated.