Andean Geology ISSN: 0718-7092
[email protected] Servicio Nacional de Geología y Minería Chile Martínez, Fernando; Arriagada, César; Mpodozis, Constantino; Peña, Matías The Lautaro Basin: A record of inversion tectonics in northern Chile Andean Geology, vol. 39, núm. 2, mayo, 2012, pp. 258-278 Servicio Nacional de Geología y Minería Santiago, Chile Available in: http://www.redalyc.org/articulo.oa?id=173922887004 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Andean Geology 39 (2): 258-278. May, 2012 Andean Geology formerly Revista Geológica de Chile www.andeangeology.cl The Lautaro Basin: A record of inversion tectonics in northern Chile Fernando Martínez1, César Arriagada1, Constantino Mpodozis2, Matías Peña1 1 Departamento de Geología-Centro de Excelencia en Geotermia de Los Andes (CEGA-FONDAP), Universidad de Chile, Plaza Ercilla 803, Correo 21, Santiago, Chile.
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[email protected] ABSTRACT. The Triassic and Jurassic tectonic history of northern Chile has been dominated by extension, although clear evidence about the nature and geometry of the extensional basins and subsequent inversion structures has been adequately illustrated in only a few cases. In this contribution we present a structural study of the Lautaro Basin located at the western edge of the Frontal Cordillera in the Atacama region of northern Chile. The Lautaro Basin is a Jurassic half-graben, filled by at least 2,600 m of marine deposits of the Lautaro Formation and developed on top of, at least 2,000 m of Triassic volcanic successions of the La Ternera Formation, also accumulated during an earlier period of extensional deformation.