Computer Science
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982e%26psl..59..208b&link_type=abstract
Earth and Planetary Science Letters, Volume 59, Issue 1, p. 208-215.
Computer Science
25
Scientific paper
Preferred crystallographic orientation patterns (fabrics) in zones of ductile deformation beneath nappes are a potentially useful indicator of the sense of nappe translation. Quartz c-axis fabrics from a shear zone beneath the pile of Higher Betic nappes in the Betic Cordilleras (Spain) have distinctly asymmetric topologies, revealed by constructing a fabric skeleton. These skeletons closely resemble those produced by computer simulations of quartz fabric development based on Taylor-Bishop-Hill theory. The fabric asymmetry indicates a northerly sense of transport for the nappes, consistent with field evidence from the same area. Analyses of both c- and a-axis fabrics based on asymmetrici intensity distributions within the fabric give equivocal results, and may reflect the presence of earlier preferred orientation patterns, predating nappe emplacement.
Behrmann Jan H.
Platt John P.
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