Kekerengu Fault

The Kekerengu Fault is an active dextral (right lateral) strike-slip fault in the northeastern part of South Island, New Zealand. It is closely associated with the Hope Fault and Jordan Thrust at its south-easternmost edge and likely joins with the Clarence Fault to form the Wairarapa Fault offshore in Cook Strait.^[1]^[2]

Early investigations immediately following the 14 November 2016 Kaikōura earthquake indicated that up to 10 m (33 ft) of motion may have occurred on the Kekerengu Fault during the 7.8 magnitude quake.^[3] The maximum displacement was later found to be 12.0 m (39.4 ft) ± 0.7 m (2 ft 4 in).^[4] During this earthquake the offshore continuation of the Kekerengu Fault to the north east, known as the Needles Fault, ruptured as well. NIWA marine geologist Dr Philip Barnes said the length of the Kekerengu–Needles Fault rupture may extend for about 70 km (43 mi), consisting of 36 km (22 mi) on land and 34 km (21 mi) under the sea.^[5]

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^ Zachariasen, Judith; Berryman, Kelvin; Langridge, Robert; Prentice, Caro; Rymer, Michael; Stirling, Mark; Villamor, Pilar (2006). "Timing of late Holocene surface rupture of the Wairau Fault, Marlborough, New Zealand". New Zealand Journal of Geology and Geophysics. 49 (1): 159–174. doi:10.1080/00288306.2006.9515156.
^ Lensen, G.J. (1958). "Note on fault correlations across Cook Strait". New Zealand Journal of Geology and Geophysics. 1 (2): 263–268. doi:10.1080/00288306.1958.10423182.
^ McBride, Sue (14 November 2016). "M7.8 Kaikoura Earthquake: Latest updates".
^ Zinke, Robert; Hollingsworth, James; Dolan, James F.; Van Dissen, Russ (2019). "Three-Dimensional Surface Deformation in the 2016 MW 7.8 Kaikōura, New Zealand, Earthquake From Optical Image Correlation: Implications for Strain Localization and Long-Term Evolution of the Pacific-Australian Plate Boundary". Geochemistry, Geophysics, Geosystems. 20 (3). doi:10.1029/2018GC007951.
^ "Huge fault rupture stretches 34km offshore from Kaikoura". Stuff. 23 November 2016. Retrieved 24 November 2016.

Seismic faults of New Zealand

North Island

North Island Fault System	Kaweka Fault Mohaka Fault Patoka Fault Ruahine Fault Rukumoana Fault Te Whaiti Fault Waimana Fault Waiohau Fault Waiotahi Fault Wairarapa Fault Wellington Fault Wheao Fault Whakatane Fault
Taupō Volcanic Zone (Taupo Rift)	Aratiatia Fault Edgecumbe Fault Matata Fault Manawahe Fault Haukari West Whangamata Fault Horohoro Fault Kaiapo Fault Karioi Fault Ngapouri-Rotomahana Fault National Park Fault Ohakune Fault Orakonui Fault Paeroa Fault Poutu Fault Zone Puketarata Fault Rangipo Fault Raurimu Fault Taupō Fault Belt Thorpe - Poplar Fault Upper Waikato Stream Fault Wahianoa Fault Waihi Fault Zone Waipuna Fault
Hauraki Rift	Firth of Thames Fault Hauraki Fault Kerepehi Fault
Auckland regional faults	Wairoa North Fault

South Island

Alpine Fault
Marlborough fault system	Awatere Fault Clarence Fault Elliott Fault Hope Fault Kekerengu Fault Wairau Fault
Canterbury fault system	Hundalee Fault Christchurch Fault Greendale Fault Port Hills Fault Ostler Fault Zone
Otago fault system	Akatore Fault Green Island Fault Kaikorai Fault Titri Fault Hyde Fault

Other

Predominantly oceanic faults	Kermadec-Tonga subduction zone (Hikurangi Margin) Macquarie Fault

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This page was last edited on 13 April 2024, at 07:48

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