Articles | Volume 8, issue 2
https://doi.org/10.5194/se-8-379-2017
https://doi.org/10.5194/se-8-379-2017
Research article
 | 
30 Mar 2017
Research article |  | 30 Mar 2017

Structural and rheological evolution of the Laramide subduction channel in southern California

Haoran Xia and John P. Platt

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Cited articles

Barth, A. P. and Schneiderman, J. S.: A comparison of structures in the Andean orogen of northern Chile and exhumed midcrustal structures in southern California, USA: An analogy in tectonic style?, Int. Geol. Rev., 38, 1075–1085, https://doi.org/10.1080/00206819709465383, 1996.
Beaumont, C., Jamieson, R. A., Butler, J. P., and Warren, C. J.: Crustal structure: A key constraint on the mechanism of ultra-high-pressure rock exhumation, Earth Planet. Sc. Lett., 287, 116–129, https://doi.org/10.1016/j.epsl.2009.08.001, 2009.
Behr, W. M. and Platt, J. P.: Rheological evolution of a Mediterranean subduction complex, J. Struct. Geol., 54, 136–155, https://doi.org/10.1016/j.jsg.2013.07.012, 2013.
Behr, W. M., Thomas, J. B., and Hervig, R. L.: Calibrating Ti concentrations in quartz for SIMS determinations using NIST silicate glasses and application to the TitaniQ geothermobarometer, Am. Mineral., 96, 1100–1106, https://doi.org/10.2138/am.2011.3702, 2011.
Berman, R. G.: Internally-consistent thermodynamic data for minerals in the system Na2O-K2O-CaO-MgO-FeO-Fe2O3-Al2O3-SiO2-TiO2-H2O-CO2, J. Petrol., 29, 445–522, https://doi.org/10.1093/petrology/29.2.445, 1988.
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Short summary
We investigated the Pelona Schist, an exhumed subduction complex in southern California associated with the Laramide subduction in Late Cretaceous–Paleocene. Based on field, microstructural and petrologic analyses, we established the deformational and metamorphic history of the Pelona Schist and discussed the exhumation process. Then we presented the rheological properties and deformation mechanisms of the Pelona Schist during each phase of deformation.