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Postulated currently inactive fault in New Zealand From Wikipedia, the free encyclopedia
The Hauraki Fault is a normal fault at the North Island of New Zealand.[1] It is along the eastern side of the still tectonically active Hauraki Rift which could have a length up to 220 km (140 mi) and fairly likely 150 km (93 mi).[2] The recently identified but yet to be fully characterised 25 km long Te Puninga fault is presumably an intra-rift fault[3] which augments the active displacement of the rift accommodated by the active intra-rift Kerepehi Fault.[4] However shallow small earthquakes have been mapped to the presumed location of the Hauraki Fault.[2]
Hauraki Fault | |
---|---|
Etymology | Hauraki Plains |
Country | New Zealand |
Region | South Auckland Regions |
Characteristics | |
Length | 220 km (140 mi) |
Displacement | 0.46 mm (0.018 in)/yr |
Tectonics | |
Plate | Indo-Australian |
Status | Quaternary fault |
Type | Normal fault |
Age | Miocene |
New Zealand geology database (includes faults) |
The fault is inferred from the sharp transition to the east from the Firth of Thames and Hauraki Plains to the Coromandel and Kaimai Ranges with hot spring activity along this line.[2]
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