1987
DOI: 10.1130/0091-7613(1987)15<1123:wottvz>2.0.co;2
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Widening of the Taupo volcanic zone, New Zealand, and the Edgecumbe earthquake of March 1987

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Cited by 30 publications
(6 citation statements)
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“…The most recent and well‐studied earthquake occurred at Edgecumbe, in the Whakatane graben (north TVZ) in 1987. This earthquake was characterized by the development of NE‐SW trending faults and extensional fractures at the ground surface, with almost pure extension, consistent with focal mechanisms [ Grapes et al , 1987; Beanland et al , 1989; Crook and Hannah , 1989; Anderson et al , 1990]. This study focuses on the definition of the geometry and kinematics of modern TVZ (<300 ka).…”
Section: Tvz and Its Tectonic Frameworkmentioning
confidence: 99%
See 1 more Smart Citation
“…The most recent and well‐studied earthquake occurred at Edgecumbe, in the Whakatane graben (north TVZ) in 1987. This earthquake was characterized by the development of NE‐SW trending faults and extensional fractures at the ground surface, with almost pure extension, consistent with focal mechanisms [ Grapes et al , 1987; Beanland et al , 1989; Crook and Hannah , 1989; Anderson et al , 1990]. This study focuses on the definition of the geometry and kinematics of modern TVZ (<300 ka).…”
Section: Tvz and Its Tectonic Frameworkmentioning
confidence: 99%
“…For example, most of the onshore TVZ rift is considered symmetric [ Rowland and Sibson , 2001], while seismic reflection profiles from the northern end of the rift show it to be asymmetric [ Davey et al , 1995]. Moreover, even though TVZ has been considered as a continuous structure, with a uniform widening [ Grapes et al , 1987], it has been recently divided into segments separated by accommodation zones [ Bryan et al , 1999; Rowland and Sibson , 2001].…”
Section: Introductionmentioning
confidence: 99%
“…This indicates the power of the interaction between the deeper mafic magmatic system and the regional tectonic system around Taupō, implying a larger intrusion could produce higher magnitude earthquakes. This is consistent with the potential for Taupō Rift faults to produce magnitudes in excess of M L 6, indicated by earthquakes sourced from the Kaingaroa and Edgecumbe faults in 1985 and 1987 (Grapes et al, 1987;Beanland et al, 1990;Villamor & Berryman, 2001;Barker et al, 2021).…”
Section: Magma-tectonic Hazardssupporting
confidence: 87%
“…Since deployment, four episodes of 'minor' unrest (1996 -1999, 2001, 2008 and 2019) have been recorded Illsley-Kemp et al, 2021)). In addition to these unrest periods, in 1987 the M 6.3 Edgecumbe earthquake occurred near the Bay of Plenty (Grapes et al, 1987;Barker et al, 2021). This event ruptured the Edgecumbe Fault and is the largest recorded onshore earthquake associated with the Taupō Rift (Beanland et al, 1990), indicating of the potential of the Taupō Rift to produce large tectonic events.…”
Section: Onwardsmentioning
confidence: 99%
“…The strike of the faulting inferred from the normal mode data is closer to the overall trend of the surface faulting (Grapes et al, 1987 t Event number re[ered to in Table 3 rllPl,_ ,,,_ This early phase of deforrnat!on occurs durixag progressive metamorphism, and is characteri_ed by high-strain (up to 300%) cylindrical and sheath folds whose axes parallel the associated stretching lineation (finite X direction). Younger structures and stretching lineations are syn-to post-metamorphic peak and reflect emergence of the crustal hanging wall along normal-directed thrust._; maximum extension ir at a high angle to the orogen length, and is independent of relative plate motion.…”
mentioning
confidence: 69%