| Macquarie Fault Zone | |
|---|---|
| Macquarie Ridge Complex, Macquarie Ridge, Macquarie Balleny Ridge, Macquarie Fault[Notes 1] | |
 Macquarie Fault Zone (yellow line) with earthquake epicenters (white circles) | |
 Map of approximate Macquarie Ridge line (yellow) and its main fault zones mentioned in text (red shading) to show position relative to Puysegur Trench to north and Hjort Trench to the south (blue shading). The Resolution Ridge is shown by a black line and Jurru Fault Zone by red lines although there are other fault zones.[Notes 2] The Macquarie Ridge associated basins (northwest portion of South East Tasman Basin, Solander Trough & Emerald Basin) are shown in light purple shading as this delimits most of the historic cross faulting and other fault zones closely related to this historic sea floor spreading centre,[1] only some of which have had secondary activation so as to contribute to current seismic activity.[2] (click on map to enable mouse over, a purple dot shown then is the location of the Macquarie Triple Junction.) | |
| Etymology | Macquarie Island |
| Coordinates | 53°S 160°E / 53°S 160°E |
| Characteristics | |
| Elevation | 433 m (1,421 ft)[3] |
| Length | 1,600 kilometres (990 mi)[4] |
| Tectonics | |
| Plate | Australian Plate and Pacific Plate boundary |
| Earthquakes | Two great (> Mw8) earthquakes in 1989 and 2004 respectively |
| Type | Oceanic Crust |
| Age | |
The 1,600 kilometres (990 mi)[4] long Macquarie Fault Zone (also known as the Macquarie Ridge, its gazetted name since 2015,[7] the Macquarie Ridge Complex or historically as the Macquarie Fault)[Notes 1] is a major right lateral-moving transform fault along the seafloor of the south Pacific Ocean which runs from New Zealand southwestward towards the Macquarie Triple Junction. It is also the tectonic plate boundary between the Australian Plate to the northwest and the Pacific Plate to the southeast. As such it is a region of high seismic activity and recorded the largest strike-slip event on record up to 23 May 1989, of at least Mw8.0[3][8][2]
Cite error: There are <ref group=Notes> tags on this page, but the references will not show without a {{reflist|group=Notes}} template (see the help page).
- ^ Jiang et al. 2021, Figure 6
- ^ a b Cite error: The named reference
Kennett2014was invoked but never defined (see the help page). - ^ a b Massell et al. 2000, Section:Introduction
- ^ a b Jiang et al. 2021, Subsection:Introduction
- ^ Daczko et al. 2003, Section:Tectonic Setting
- ^ Cite error: The named reference
Jiang2021was invoked but never defined (see the help page). - ^ GEBCO:Macquarie Ridge
- ^ Cite error: The named reference
Frohlich1997was invoked but never defined (see the help page).