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    Multi-stage accretion of high pressure rocks and thermal changes in a subduction channel: evidence from Diego de Almagro Island (Chilean Patagonia)
    EGU General Assembly Conference Abstracts (2016)
    Thaís HyppolitoSamuel AngiboustCaetano JulianiJohannes GlodnyAntonio García‐CascoMauricio CalderónChristian Chopin
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    Subduction erosion related to spreading-ridge subduction: Taitao peninsula (Chile margin triple junction area)
    Geology (1996)
    Jacques BourgoisHervé MartinYves LagabrielleJosé Le MoigneJorge Jara
    During the Pliocene, subduction of the Chile ridge beneath the South American margin was coeval with the emplacement of the Cabo Raper pluton located at the seaward edge of the Taitao peninsula. The chemical characteristics of the Cabo Raper pluton combined with the available tectonic data allow us to reconstruct the paleogeometry of the Chile margin 3–4.2 m.y. ago. When compared to the modern configuration, the volume of material removed by subduction erosion can be estimated quantitatively. From 3–4.2 to 1.5–1.6 Ma, 625 km 3 of rock were removed along each kilometre of margin along the Taitao peninsula transect. This leads to a conservative subduction-erosion rate of 231–443 km 3 ċkm −1 ċm.y. −1 , significantly higher than those calculated along the Japan and Peru convergent margins. It is proposed that subduction of the Chile ridge contributes fluids in addition to the subducted sediment, resulting in a higher rate of subduction erosion.
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    Long term accretion history (165-70 Ma) recorded by high-pressure rocks of Diego de Almagro Island (Patagonia, Chile): implications for understanding subduction zone interface tectonic processes
    EGU General Assembly Conference Abstracts (2017)
    Samuel AngiboustThaís HyppolitoJohannes GlodnyAitor CambesesPatrick Monié
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    LATE CENOZOIC SUBDUCTION OF THE CHILE RIDGE BENEATH PATAGONIA: RESULTS FROM PASSIVE SEISMIC DEPLOYMENTS
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    Using glacial morphology to constrain the impact of the Chile active spreading ridge subduction in Central Patagonia
    EGU General Assembly Conference Abstracts (2009)
    Bruno ScalabrinoJean‐François RitzYves Lagabrielle
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