Anticlustering of small normal faults around larger faults

Abstract

Research Article| December 01, 1997 Anticlustering of small normal faults around larger faults Rolf V. Ackermann; Rolf V. Ackermann 1Department of Geological Sciences, Rutgers University, Busch Campus, Piscataway, New Jersey 08855-1179 Search for other works by this author on: GSW Google Scholar Roy W. Schlische Roy W. Schlische 1Department of Geological Sciences, Rutgers University, Busch Campus, Piscataway, New Jersey 08855-1179 Search for other works by this author on: GSW Google Scholar Geology (1997) 25 (12): 1127–1130. https://doi.org/10.1130/0091-7613(1997)025<1127:AOSNFA>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Rolf V. Ackermann, Roy W. Schlische; Anticlustering of small normal faults around larger faults. Geology 1997;; 25 (12): 1127–1130. doi: https://doi.org/10.1130/0091-7613(1997)025<1127:AOSNFA>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Solite quarry in the Mesozoic Danville rift basin contains normal faults that conform to two spatial and size distributions. Larger master normal faults (20 cm < length[L] < 200 cm) are not numerous and have spanned the mechanical layer. The other faults are numerous, small (∼0.1 cm < L < 20 cm), and exhibit anticlustering with respect to the larger structures, defining crack shields around the master faults. The shields are ellipsoidal in shape and geometrically similar to the elastic deformation fields of the master faults, and correspond to a critical stress-reduction shadow that prevented the nucleation of smaller faults in the vicinity of the master faults. The master faults likely formed earlier than the smaller faults, which nucleated en masse when some critical strain threshold was exceeded outside the master fault deformation field. The anticlustered spatial distribution of faults described here is the first field documentation for the existence of stress reduction shadows around normal faults. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.