Flanking structures

Authors
Citation
Cw. Passchier, Flanking structures, J STRUC GEO, 23(6-7), 2001, pp. 951-962
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
JOURNAL OF STRUCTURAL GEOLOGY
ISSN journal
0191-8141 → ACNP
Volume
23
Issue
6-7
Year of publication
2001
Pages
951 - 962
Database
ISI
SICI code
0191-8141(200106/07)23:6-7<951:FS>2.0.ZU;2-T
Abstract
Flanking structures an deflections of planar or linear fabric elements in a rock alongside a cross-cutting object such as a vein, fracture or burrow. Flanking structures are divided into flanking-folds and flanking shear-band s. Both structures can develop by a range of mechanisms including intrusion or in situ formation of veins that bisects existing fold trains or shear-b ands along the axis of the structure; flow partitioning alongside an active fault in a ductilely deforming rock; passive rotation of a vein with attac hed nl row rim of wall rock formed by alteration of the wall rock during in trusion of the vein; development of a shear zone in or along a pre-existing vein; and passive amplification of small deflections alongside a vein or b urrow. Flanking structures can he used to establish a sequence of deformati on and intrusion or partial melting, and some types of flanking structures can he used as shear sense indicators or to determine finite strain. (C) 20 01 Elsevier Science Ltd. All rights reserved.