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  2. Tonga–Kermadec Ridge - Wikipedia

    en.wikipedia.org/wiki/Tonga–Kermadec_Ridge

    The extension in the Lau–Havre basin results in a higher rate of subduction than convergence along the Australian–Pacific plate boundary. The rates of extension, subduction, and convergence all increase northwards in this complex, subduction at a rate of 24–6 cm/year (9.4–2.4 in/year) and extension at a rate of 9.1–15.9 cm/year (3.6 ...

  3. Subduction - Wikipedia

    en.wikipedia.org/wiki/Subduction

    However, evidence from thermodynamic modeling has shown that the pressures and temperatures necessary for this type of metamorphism are much higher than what is observed in most subduction zones. [69] Frezzoti et al. (2011) propose a different mechanism for carbon transport into the overriding plate via dissolution (release of carbon from ...

  4. Subduction zone metamorphism - Wikipedia

    en.wikipedia.org/wiki/Subduction_zone_metamorphism

    A metamorphic facies is characterized by a stable mineral assemblage specific to a pressure-temperature range and specific starting material. Subduction zone metamorphism is characterized by a low temperature, high-ultrahigh pressure metamorphic path through the zeolite , prehnite-pumpellyite, blueschist , and eclogite facies stability zones of ...

  5. Oceanic trench - Wikipedia

    en.wikipedia.org/wiki/Oceanic_trench

    Other fully sedimented trenches include the Makran Trough, where sediments are up to 7.5 kilometers (4.7 mi) thick; the Cascadia subduction zone, which is completed buried by 3 to 4 kilometers (1.9 to 2.5 mi) of sediments; and the northernmost Sumatra subduction zone, which is buried under 6 kilometers (3.7 mi) of sediments. [23]

  6. Convergent boundary - Wikipedia

    en.wikipedia.org/wiki/Convergent_boundary

    Subduction of the Nazca plate beneath the South American plate to form the Andes. Subduction of the Pacific plate beneath the Australian plate and Tonga plate, forming the complex New Zealand to New Guinea subduction/transform boundaries. Collision of the Eurasian plate and the African plate formed the Pontic Mountains in Turkey.

  7. Nazca plate - Wikipedia

    en.wikipedia.org/wiki/Nazca_Plate

    The subduction has formed and continues to form the volcanic Andes Mountain Range. Deformation of the Nazca plate even affects the geography of Bolivia , far to the east (Tinker et al.). The 1994 Bolivia earthquake occurred on the Nazca plate; this had a magnitude of 8.2 M w {\displaystyle M_{w}} , which at that time was the strongest ...

  8. Flat slab subduction - Wikipedia

    en.wikipedia.org/wiki/Flat_Slab_Subduction

    The subduction of bathymetric highs such as aseismic ridges, oceanic plateaus, and seamounts has been posited as the primary driver of flat slab subduction. [3] The Andean flat slab subduction zones, the Peruvian slab and the Pampean (Chilean) flat slab, are spatially correlated with the subduction of bathymetric highs, the Nazca Ridge and the Juan Fernandéz Ridge, respectively.

  9. Episodic tremor and slip - Wikipedia

    en.wikipedia.org/wiki/Episodic_tremor_and_slip

    In both the Cascadia and Nankai subduction zones, slow slip events are directly associated with tremor. [ 4 ] [ 17 ] In the Cascadia subduction zone, slip events and seismological tremor signals are spatially and temporally coincident, [ 18 ] but this relationship does not extend to the Mexican subduction zone. [ 19 ]