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At its northern end the Tonga Trench bends west into the microplates, interconnected spreading centres, and deformation zones of the Lau Basin. But the Tonga Trench also has a continuation in the inactive Vitiaz Trench (north of map area) with which it formed a single continuous trench before the opening of the North Fiji Basin (west of map area).
The Kermadec–Tonga subduction zone is a convergent plate boundary that stretches from the North Island of New Zealand northward. The formation of the Kermadec and Tonga plates started about 4–5 million years ago. Today, the eastern boundary of the Tonga plate is one of the fastest subduction zones, with a rate up to 24 cm/year (9.4 in/year ...
Depth Depth Depth 1 Challenger Deep: Izu–Bonin–Mariana Arc, Mariana Trench, Pacific Ocean 11,034 36,197 6.86 2 Tonga Trench: Pacific Ocean 10,882 35,702 6.76 3 Emden Deep: Philippine Trench, Pacific Ocean 10,545 34,580 6.54 4 Kuril–Kamchatka Trench: Pacific Ocean 10,542 34,449 6.52 5 Kermadec Trench: Pacific Ocean 10,047 32,963
The Kermadec Trench is one of Earth's deepest oceanic trenches, reaching a depth of 10,047 metres (32,963 ft). [3] Formed by the subduction of the Pacific Plate under the Indo-Australian Plate, it runs parallel with and to the east of the Kermadec Ridge and island arc. The Tonga Trench marks the continuation of subduction to the north.
The Tonga–Kermadec Ridge is an oceanic ridge in the south-west Pacific Ocean underlying the Tonga–Kermadec island arc.It is a result of the most linear, fastest converging, and seismically active subduction boundary on Earth, the Kermadec–Tonga subduction zone, and consequently has the highest density of submarine volcanoes.
A team of Chilean and American scientists ventured to a place where no human has ever gone before. And although it may sound like a space voyage straight out of a Star Trek episode, this real-life ...
File information Description Hikurangi–Kermadec–Tonga subduction zone and associated ocean floor features Source See Kermadec-Tonga subduction zone, Hikurangi Margin, Hikurangi Trough, Hikurangi Channel, Tonga Trench, Kermadec Trench, Lau Basin, Havre Trough and Tonga-Kermadec Ridge.
The depth of the trench depends on the starting depth of the oceanic lithosphere as it begins its plunge into the trench, the angle at which the slab plunges, and the amount of sedimentation in the trench. Both starting depth and subduction angle are greater for older oceanic lithosphere, which is reflected in the deep trenches of the western ...