VOLCANO: Laguna del Maule Volcanic Field, Eruptive history

[Jean-François Smekens <jsmekens@xxxxxxx>]

**************************************************************************************************
Laguna del Maule Volcanic Field, Eruptive history
From: Judith E Fierstein <jfierstn@xxxxxxxx>
**************************************************************************************************

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




==============================================================

To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx.

To contribute to the volcano list, send your message to: volcano@xxxxxxx. Please do not send attachments.

==============================================================