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Title: Compressional residual stress in Bastogne boudins revealed by synchrotron X-ray microdiffraction

Lattice distortions in crystals can be mapped at the micron scale using synchrotron X-ray Laue microdiffraction (μXRD). From lattice distortions the shape and orientation of the elastic strain tensor can be derived and interpreted in terms of residual stress. We apply the new method to vein quartz from the original boudinage locality at Bastogne, Belgium. Furthermore, a long-standing debate surrounds the kinematics of the Bastogne boudins. The μXRD measurements reveal a shortening residual elastic strain, perpendicular to the vein wall, corroborating the model that the Bastogne boudins formed by layer-parallel shortening and not by layer-parallel extension, as is in the geological community generally inferred by the process of boudinage.
 [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [3]
  1. Xi'an Jiaotong Univ. (China). Center for Advancing Materials Performance from the Nanoscale
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
  3. Univ. of California, Berkeley, CA (United States). Dept. of Earth and Planetary Science
  4. Department of Earth and Environmental Sciences, KU Leuven, Leuven Belgium; Katholieke Univ. Leuven, Heverlee (Belgium). Dept. of Earth and Environmental Sciences
Publication Date:
Grant/Contract Number:
AC02-05CH11231; FG02-05ER15637; EAR-1343908; 51302207; OT/11/038; G097014
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 43; Journal Issue: 12; Journal ID: ISSN 0094-8276
American Geophysical Union
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1376757