Thursday, December 29, 2011

Peru's Misti Volcano: Understanding The Past To Assess Future Hazards

Misti volcano’s last Plinian eruption happened ca. 2 ka (kiloannum, or 1000 years) ago , emplacing voluminous tephra-fall, pyroclastic-flow, and lahar deposits. Arequipa, located at the foot of the volcano, has a population of over 800,000 people and growing. Misti will erupt explosively again, and it is important to understand the past Plinian eruption.

This Geological Society of America (GSA) Special Paper first provides a detailed description and analysis of the lahar deposits from the 2 ka eruption and the flows that emplaced them.

Credit: GSA

Because Misti is located in an arid region, the authors have also included a detailed discussion of the paleoclimate conditions that provided the water for voluminous mudflows. The authors further delineate the complete eruption sequence for the pyroclastic-flow and tephra-fall deposits, providing a narrative of the eruption progression and dynamics.

Finally, the book discusses the 2 ka eruption in the context of hazards from a future Plinian eruption and provides hazards maps for the different phenomena.

Contacts and sources:
Geological Society of America

Publication title: The 2 ka Eruption of Misti Volcano, Southern Peru—The Most Recent Plinian Eruption of Arequipa’s Iconic Volcano
Author: Christopher J. Harpel, Shanaka de Silva, and Guido Salas (editors)
Publication type: Book (Paperback)
Publication date: 29 December 2011
Number of pages: 70
ISBN number: 978-0-8137-2484-3
Price: 40.00 USD US Dollars

Individual copies of the volume may be purchased through the Geological Society of America online bookstore,, or by contacting GSA Sales and Service.

Book editors of earth science journals/publications may request a review copy by contacting April Leo 

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