Analysis of Progressive Fault Displacement During Downcutting at the Branch River Terraces, South Island, New Zealand

Research Article| May 01, 1968 Analysis of Progressive Fault Displacement During Downcutting at the Branch River Terraces, South Island, New Zealand GERALD J LENSEN GERALD J LENSEN New Zealand Geological Survey, P. O. Box 30368, Lower Ihitt, New Zealand Search for other works by this author on: GSW Google Scholar Author and Article Information GERALD J LENSEN New Zealand Geological Survey, P. O. Box 30368, Lower Ihitt, New Zealand Publisher: Geological Society of America Received: 10 Nov 1966 Revision Received: 17 Apr 1967 First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1968, 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 (1968) 79 (5): 545–556. https://doi.org/10.1130/0016-7606(1968)79[545:AOPFDD]2.0.CO;2 Article history Received: 10 Nov 1966 Revision Received: 17 Apr 1967 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation GERALD J LENSEN; Analysis of Progressive Fault Displacement During Downcutting at the Branch River Terraces, South Island, New Zealand. GSA Bulletin 1968;; 79 (5): 545–556. doi: https://doi.org/10.1130/0016-7606(1968)79[545:AOPFDD]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 The Branch River terrace sequence includes terraces unmatched on the two sides of the fault, so that Suggate's (1960) rule for association of vertical and horizontal movement could be applied only after careful identification of matched features; the sequence is a practical example of Lensen's (1964a) general case of lateral faulting and lateral river erosion.Reversal of direction of vertical movement took place early in the period of downcutting of the terraces, a period of about 20,000 years.The rate of downcutting appears to be climatically controlled, while the rate of horizontal faulting appears to be relatively constant.At this locality and other areas along the Wairau and Alpine faults, which show similar amounts of displacements of features of the same age, faulting is likely to occur about once every 500 to 900 years. 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.