Taitao ophiolite (Spanish: Ofiolita de Taitao) is an ophiolite in Taitao Peninsula of western Patagonia, Chile. The ophiolite crops out about 10 km w to the east of the Peru-Chile Trench and 50 km to the south of Chile Triple Junction —two features to which it is related.[4][5]
The ophiolite formed in connection to the subduction of the Chile Rise, a mid-ocean ridge, beneath South America.[4] More specifically it has been proposed that the ophiolite formed in a rift of the forearc region of the South American plate.[6]
The Taitao ophiolite presents a pseudostratigraphy with the following lithologies; peridotite, pyroxenite, gabbro, sheeted dykes of diabase, pillow lava and sedimentary rock.[4][5]
References
edit- ^ Anma, Ryo; Armstrong, Richard; Orihashi, Yuji; Ike, Shin-ichi; Shin, Ki-Cheol; Kon, Yoshiaki; Komiya, Tsuyoshi; Ota, Tsutomu; Kagashima, Shin-ichi; Shibuya, Takazo (November 2009). "Are the Taitao granites formed due to subduction of the Chile ridge?" (PDF). Lithos. 113 (1–2): 246–258. Bibcode:2009Litho.113..246A. doi:10.1016/j.lithos.2009.05.018. hdl:2241/104215. ISSN 0024-4937.
- ^ Veloso, Eugenio E; Anma, Ryo; Yamaji, Atsushi (January 2009). "Ophiolite Emplacement and the Effects of the Subduction of the Active Chile Ridge System: Heterogeneous Paleostress Regimes Recorded in the Taitao Ophiolite (Southern Chile)". Andean Geology. 36 (1). doi:10.4067/s0718-71062009000100002. ISSN 0718-7106.
- ^ Bourgois, Jacques; Lagabrielle, Yves; Martin, Hervé; Dyment, Jérôme; Frutos, Jose; Cisternas, Maria Eugenia (2016), A Review on Forearc Ophiolite Obduction, Adakite-Like Generation, and Slab Window Development at the Chile Triple Junction Area: Uniformitarian Framework for Spreading-Ridge Subduction, Pageoph Topical Volumes, Cham: Springer International Publishing, pp. 3217–3246, doi:10.1007/978-3-319-51529-8_2, ISBN 978-3-319-51528-1, retrieved 2021-11-10
- ^ a b c Keading, M.; Forsythe, R.D.; Nelson, E.P. (1990). "Geochemistry of the Taitao ophiolite and near-trench intrusions from the Chile margin triple junction". Journal of South American Earth Sciences. 3 (4): 161–177. Bibcode:1990JSAES...3..161K. doi:10.1016/0895-9811(90)90001-H.
- ^ a b Schulte, Ruth F.; Schilling, Manuel; Anma, Ryo; Farquhar, James; Horan, Mary F.; Komiya, Tsuyoshi; Piccoli, Philip M.; Pitcher, Lynnette; Walker, Richard J. (2009). "Chemical and chronologic complexity in the convecting upper mantle: Evidence from the Taitao ophiolite, southern Chile". Geochimica et Cosmochimica Acta. 73 (19): 5793–5819. Bibcode:2009GeCoA..73.5793S. doi:10.1016/j.gca.2009.06.015.
- ^ Nelson, Eric; Forsythe, Randall; Diemer, John; Allen, Mike (1993). "Taitao ophiolite: a ridge collision ophiolite in the forearc of southern Chile (46°S)". Revista Geológica de Chile. 20 (2): 137–165. Retrieved December 23, 2018.
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