Recent volcanic history of Irazú volcano, Costa Rica: Alternation and mixing of two magma batches, and pervasive mixing

Guillermo E. Alvarado; Michael J. Carr; Brent D. Turrin; Carl C. Swisher; Hans-Ulrich Schmincke; Kenneth W. Hudnut

doi:10.1130/2006.2412(14)

Skip Nav Destination

Book Chapter

Recent volcanic history of Irazú volcano, Costa Rica: Alternation and mixing of two magma batches, and pervasive mixing

Author(s)

Guillermo E. Alvarado

Área de Amenazas y Auscultación Sísmica y Volcánica, Instituto Costarricense de Electricidad, Apdo. 10032-1000, Costa Rica

Search for other works by this author on:

GSW

Google Scholar

;

Michael J. Carr

Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903, USA

Search for other works by this author on:

GSW

Google Scholar

;

Brent D. Turrin

Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903, USA

Search for other works by this author on:

GSW

Google Scholar

;

Carl C. Swisher, III

Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903, USA

Search for other works by this author on:

GSW

Google Scholar

;

Hans-Ulrich Schmincke

Leibniz Institute for Marine Science, IfM-GEOMAR (Leibniz Institute for Marine Sciences), Wischhofstr. 1-3, D-24148 Kiel, Germany

Search for other works by this author on:

GSW

Google Scholar

;

Kenneth W. Hudnut

U.S. Geological Survey, 525 South Wilson Ave., Pasadena, California 91106-3212, USA

Search for other works by this author on:

GSW

Google Scholar

Doi:

https://doi.org/10.1130/2006.2412(14)

Published:

January 01, 2006

⁴⁰Ar/³⁹Ar dates, field observations, and geochemical data are reported for Irazú volcano, Costa Rica. Volcanism dates back to at least 854 ka, but has been episodic with lava shield construction peaks at ca. 570 ka and 136–0 ka. The recent volcanic record on Irazú volcano comprises lava flows and a variety of Strombolian and phreatomagmatic deposits, with a long-term trend toward more hydrovolcanic deposits. Banded scorias and hybridized rocks reflect ubiquitous magma mixing and commingling. Two distinct magma batches have been identified. One magma type or batch, Haya, includes basalt with higher high field strength (HFS) and...

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

You could not be signed in. Please check your email address / username and password and try again.

Shibboleth Sign In

OpenAthens Sign In

Institutional Sign In