Laguna del Maule Volcanic Field, Eruptive history
From: Judith E Fierstein <jfierstn@xxxxxxxx>
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We call to your attention a new publication by SERNAGEOMIN of Chile:
Laguna del Maule Volcanic Field; Eruptive history of a Quaternary basalt-to-rhyolite distributed volcanic field on the Andean rangecrest in central Chile, by W. Hildreth, E. Godoy, J. Fierstein, and B. Singer, Servicio Nacional de Geología y Minería, Boletín No. 63, 145 p.
Description:
Straddling the Andean rangecrest, the Laguna del Maule volcanic field is the site of postgalcial silicic volcanism in the Andean Southern Subduction Zone (SVZ). No fewer than 36 postglacial eruptions from 24 vents surrounding the 9-by-11-km lake basin have produced rhyolite and rhyodacite lava flows, most or all of them accompanied by pumice falls. Although silicic volcanism has been recurrent here throughout the entire Quaternary, the abundance and frequency of rhyolitic eruptions in the postglacial interval appears to be unprecedented.
This distruibuted rear-arc volcanic field has few large edifices but at least 130 independent Quaternary vents, from which more than 350 km3 of products have erupted since 1.5 Ma. This report assembles a comprehensive chronological and compositional eruptive history of the Laguna del Maule Quaternary volcanic field.
For copies, contact Wes Hildreth (hildreth@xxxxxxxx) or SERNAGEOMIN de Chile.
Wes Hildreth
U.S. Geological Survey
Volcano Science Center
Menlo Park, CA
email: hildreth@xxxxxxxx
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