Tonga-Kermadec subduction system
E43916
The Tonga-Kermadec subduction system is a major convergent plate boundary in the southwest Pacific where the Pacific Plate descends beneath the Indo-Australian Plate, producing one of the world’s deepest ocean trenches and most active seismic and volcanic regions.
Aliases (2)
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
convergent plate boundary
→
subduction zone → tectonic system → |
| associatedWith |
Kermadec Ridge
→
Tonga Ridge → Tonga-Kermadec volcanic arc → back-arc Havre Trough → back-arc Lau Basin → fluid release from subducting slab → mantle wedge melting → tsunami generation → |
| boundedBy |
Lau Basin to the west
→
Pacific Plate to the east → |
| characterizedBy |
oceanic-oceanic subduction
→
|
| contains |
Horizon Deep
→
|
| extendsFrom |
northern Tonga region
→
|
| extendsTo |
Kermadec region north of New Zealand
→
|
| hasFeature |
active volcanism
→
back-arc spreading centers → deep ocean trench → frequent large earthquakes → high plate convergence rate → high seismicity → slab rollback → steep subduction angle → submarine volcanoes → volcanic island arc → |
| hasMaximumDepth |
over 10000 m
→
|
| hasOverridingPlate |
Indo-Australian Plate
→
|
| hasPart |
Kermadec Trench
→
Tonga Trench → |
| hasSubductingPlate |
Pacific Plate
→
|
| HorizonDeepDepthApprox |
about 10800 m
→
|
| locatedIn |
southwest Pacific Ocean
→
|
| near |
Kermadec Islands
→
Tonga Islands → |
| oneOfWorlds |
deepest ocean trenches
→
most seismically active regions → most volcanically active regions → |
| overlies |
Pacific Plate
→
|
| partOf |
Pacific Ring of Fire
→
|
| produces |
deep-focus earthquakes
→
intermediate-depth earthquakes → megathrust earthquakes → |
| studiedIn |
marine geology
→
plate tectonics → seismology → volcanology → |
| underlies |
Indo-Australian Plate
→
|
Referenced by (3)
| Subject (surface form when different) | Predicate |
|---|---|
|
Tonga Trench
→
|
associatedWith |
|
Kermadec Trench
("Kermadec-Tonga subduction system")
→
|
geologicalProvince |
|
Kermadec Trench
("Kermadec-Tonga subduction zone")
→
|
partOf |