WRENCH-FAULT TECTONICS
1956; Geological Society of America; Volume: 67; Issue: 9 Linguagem: Inglês
10.1130/0016-7606(1956)67[1207
ISSN1943-2674
Autores Tópico(s)Seismology and Earthquake Studies
ResumoResearch Article| September 01, 1956 WRENCH-FAULT TECTONICS J. D MOODY; J. D MOODY GULF OIL CORP., P.O. BOX 1290, Ft. WORTH, TEXAS; WESTERN GULF OIL CO., 1200 STATLER CENTER, LOS ANGELES 17, CALIF. Search for other works by this author on: GSW Google Scholar M. J HILL M. J HILL GULF OIL CORP., P.O. BOX 1290, Ft. WORTH, TEXAS; WESTERN GULF OIL CO., 1200 STATLER CENTER, LOS ANGELES 17, CALIF. Search for other works by this author on: GSW Google Scholar Author and Article Information J. D MOODY GULF OIL CORP., P.O. BOX 1290, Ft. WORTH, TEXAS; WESTERN GULF OIL CO., 1200 STATLER CENTER, LOS ANGELES 17, CALIF. M. J HILL GULF OIL CORP., P.O. BOX 1290, Ft. WORTH, TEXAS; WESTERN GULF OIL CO., 1200 STATLER CENTER, LOS ANGELES 17, CALIF. Publisher: Geological Society of America Received: 18 Aug 1955 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1956, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1956) 67 (9): 1207–1246. https://doi.org/10.1130/0016-7606(1956)67[1207:WT]2.0.CO;2 Article history Received: 18 Aug 1955 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation J. D MOODY, M. J HILL; WRENCH-FAULT TECTONICS. GSA Bulletin 1956;; 67 (9): 1207–1246. doi: https://doi.org/10.1130/0016-7606(1956)67[1207:WT]2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Extending the work of E. M. Anderson, M. K. Hubbert, and W. Hafner on faulting, the authors develop the hypothesis that anticlinal folds, thrust faults, and wrench faults can be generated as a result of movement on a large wrench fault such as the San Andreas of California. Extension of this concept leads to the conclusion that for any given tectonic area, at least eight directions of wrench faulting and four directions of anticlinal folding and/or thrusting should accommodate the structural elements of that region; these directions should have a more or less symmetrical disposition relative to the direction of the primary compressive stress. The angles α, β, and γ are defined to describe the geometry of such a wrench-fault tectonic system relatively completely.The authors' interpretations of tectonics in various areas indicate that wrench-fault tectonic systems do exist and are aligned systematically over large portions of the earth's crust as indicated by Hobbs, Vening Meinesz, Sonder, and others. Eight principal wrench directions are defined in terms of major elements of the earth's crust such as the Alpine fault of New Zealand. Structural elements aligned in these eight directions constitute major features of the regmatic shear pattern of Sender. The authors conclude that the shear pattern may have resulted from stresses which are oriented essentially meridionally and have been acting in nearly the same direction throughout much of crustal history.It is concluded that major wrench faults, which penetrate the entire outer crust of the earth and result in wholesale segmentation of the outer crust into polygonal blocks, constitute a fundamental type of yielding in the crust.Possible origins of the stresses involved, formation of geosynclines, island arcs, volcanism, and crustal evolution are discussed in terms of these ideas. Some possible objections and weak points in the argument are pointed out, and suggestions for further study are included. 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.
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