Oceanic rift valley in the south-west Pacific Ocean to the north of New Zealand
Taupō
New Zealand
Lau Basin
Tonga- Kermadec Ridge
Lau Ridge
Tonga Trench
Kermadec Trench
Ngatoro Rift
Rumble V Ridge
Havre Trough
South Fiji Basin
Colville Ridge
Geological relationships of the Havre Trough.
The Havre Trough (Havre Basin[1]) is a currently actively rifting back-arc basin[1] about 100 km (62 mi) to 120 km (75 mi) wide,[2] between the Australian Plate and Kermadec microplate. The trough extends northward from New Zealand's offshore Taupō Volcanic Zone commencing at Zealandia's continental shelf margin and continuing as a tectonic feature, as the Lau Basin which currently contains active seafloor spreading centers. Its eastern margin is defined by the Kermadec Ridge created by Pacific Plate subduction under the Kermadec microplate, while the western margin is the remnant Lau-Colville Ridge.
^ abArtemieva 2023, Section:#18. Harve Basin
^Caratori et al. 2019, Section:Evidence of past seafloor spreading in the Havre Trough
Kermadec Trench Ngatoro Rift Rumble V Ridge HavreTrough South Fiji Basin Colville Ridge The HavreTrough (Havre Basin) is a currently actively rifting back-arc...
the New Caledonia Basin from its previous continuation through the Bounty Trough.[citation needed] Compression across the boundary has uplifted the Southern...
Lau-Colville Ridge began at 6 Ma which initiated the opening of the Lau Basin-HavreTrough. This extension has propagated southward since and has developed into...
The Hikurangi Trench, also called the Hikurangi Trough, is an oceanic trench in the bed of the Pacific Ocean off the east coast of the North Island of...
The Bounty Trough is a major submerged feature, a bathymetric depression, of the oceanography of the southwest Pacific Ocean. It is located off the east...
The basin has a raised transition area to the south where it joins the HavreTrough. Lau Basin is a young basin (much is less than 5 million years old) that...
West Norfolk Ridge Troughs and trenches Bellona Gap Bellona Trough Bounty TroughHavreTrough Hikurangi Trench New Caledonia Trough Puysegur Trench Oceanic...
Havre Seamount is an active volcanic seamount lying within the Kermadec Islands group of New Zealand, in the south-west Pacific Ocean, on the Tonga-Kermadec...
Macquarie Ridge, which separates the Puysegur Trench from the Solander Trough. To the west is the expanse of the Tasman Basin, which stretches most of...
Giggenbach, a submarine volcano, and even farther west ares the HavreTrough and a caldera. This trough separates the Kermadec microplate from the Australian plate...
its former spreading sea floor of the Cook Fracture Zone. To its south a trough extends from the Norfolk Basin separating it from the volcanic alignment...
best fit Pacific Plate reference frame tectonics model where the Osbourn Trough is modelled as a spreading centre between the Manihiki Plate and the Hikurangi...
Hikurangi Plateau. To the south, similar depths are achieved in the Bounty Trough. Past the eastern end of the rise, the sea floor drops away to the abyssal...
east to west these are the Kermadec Trench, the Kermadec Ridge, the HavreTrough and the Colville Ridge. In the Kermadec Trench the Pacific Plate subducts...
the sea floor is the South East Tasman Basin and to its east the Solander Trough and Emerald Basin. Technically the plate boundary becomes part of the Emerald...
respectively. Its long axis is parallel to the tectonic fabric of the HavreTrough that lies west of the volcanic arc. Historical eruptions at Raoul during...
tectonic configuration that would have resembled the present Lau Basin and HavreTrough. The former Kupe microplate is now fixed to the Australian Plate. Presently...
West Norfolk Ridge Troughs and trenches Bellona Gap Bellona Trough Bounty TroughHavreTrough Hikurangi Trench New Caledonia Trough Puysegur Trench Oceanic...
of this area can be most easily resolved by postulating between the HavreTrough to the east of the South Kermadec Ridge Seamounts, the Whakatane Graben...
southern margins while the northern margin slowly falls into the Bounty Trough. The Campbell Plateau is a roughly triangular, cratonic microcontinent which...
towards Tonga (Kermadec-Tonga Arc). This area of the Kermadec Arc - HavreTrough is a relatively young oceanic arc-back-arc system as it became active...
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