Strike-slip ground-surface rupture (Greendale Fault) associated with the 4 September 2010 Darfield earthquake, Canterbury, New Zealand

被引:20
|
作者
Barrell, D. J. A. [1 ]
Litchfield, N. J. [2 ]
Townsend, D. B. [2 ]
Quigley, M. [3 ]
Van Dissen, R. J. [2 ]
Cosgrove, R. [4 ]
Cox, S. C. [1 ]
Furlong, K. [5 ]
Villamor, P. [2 ]
Begg, J. G. [2 ]
Hemmings-Sykes, S. [2 ]
Jongens, R. [1 ]
Mackenzie, H. [3 ]
Noble, D. [3 ]
Stahl, T. [3 ]
Bilderback, E. [3 ]
Duffy, B. [3 ]
Henham, H. [3 ]
Klahn, A. [3 ]
Lang, E. M. W. [1 ]
Moody, L. [3 ]
Nicol, R. [3 ]
Pedley, K. [3 ]
Smith, A. [3 ]
机构
[1] GNS Sci, Dunedin 9054, New Zealand
[2] GNS Sci, Lower Hutt 5040, New Zealand
[3] Univ Canterbury, Dept Geol Sci, Christchurch 8140, New Zealand
[4] The Press, Christchurch, New Zealand
[5] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA
关键词
D O I
10.1144/1470-9236/11-034
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
This paper provides a photographic tour of the ground-surface rupture features of the Greendale Fault, formed during the 4 September 2010 Darfield earthquake. The fault, previously unknown, produced at least 29.5 km of strike-slip surface deformation of right-lateral (dextral) sense. Deformation, spread over a zone between 30 and 300 m wide, consisted mostly of horizontal flexure with subsidiary discrete shears, the latter only prominent where overall displacement across the zone exceeded about 1.5 m. A remarkable feature of this event was its location in an intensively farmed landscape, where a multitude of straight markers, such as fences, roads and ditches, allowed precise measurements of offsets, and permitted well-defined limits to be placed on the length and widths of the surface rupture deformation.
引用
收藏
页码:283 / 291
页数:9
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