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Book Chapter

Deposit temperature of pyroclastic density currents emplaced during the El Chichón 1982 and Colima 1913 eruptions

By
Roberto Sulpizio
Roberto Sulpizio
Dipartimento di Scienze della Terra e Geoambientali, University of Bari, via Orabona 4, 70125, Bari, ItalyIstituto per la Dinamica dei Processi Ambientali, Consiglio Nazionale delle Ricerche, (IDPA-CNR), via M. Bianco 9, Milan, Italy
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Elena Zanella
Elena Zanella
Dipartimento di Scienze della Terra, Via Valperga Caluso 35, 10125, Torino, ItalyALP – Alpine Laboratory of Paleomagnetism, Peveragno, Italy
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José Luis Macías
José Luis Macías
Instituto de Geofisica, Universidad Nacional Autónoma de México, Coyoacán 04510, D.F., Mexico
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Ricardo Saucedo
Ricardo Saucedo
Instituto de Geología/Fac. Ingeniería UASLP, Zona Universitaria, Dr. M. Nava No 5, 78240 San Luis Potosí, Mexico
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Published:
January 01, 2015

Abstract

New data on the pyroclastic density current (PDC) deposit temperature (Tdep) are provided for two prominent eruptions of Mexican volcanoes of the twentieth century: the 1982 eruption of El Chichón and the 1913 eruption of Colima. In spite of similar lithofacies, magma composition and pre-eruptive conditions, the Tdep of the PDCs from the 1982 (El Chichón) and 1913 (Colima) eruptions differ significantly, with intervals of Tdep of 360–420 °C and 250–330 °C, respectively. These new data emphasize that a full understanding of the physical mechanisms responsible for equilibrium temperature attainment within a pyroclastic deposit has not yet been realized. The Tdep measured for El Chichón PDC deposits confirm the preliminary data published elsewhere, while Colima magnetic temperatures provide different values to those published previously.

Supplementary material:

Tdep measurements for the different sites at El Chichon volcano and Colima volcano are available at: http://www.geolsoc.org.uk/SUP18695.

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Contents

Geological Society, London, Special Publications

The Use of Palaeomagnetism and Rock Magnetism to Understand Volcanic Processes

M. H. Ort
M. H. Ort
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M. Porreca
M. Porreca
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J. W. Geissman
J. W. Geissman
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Geological Society of London
Volume
396
ISBN electronic:
9781862396722
Publication date:
January 01, 2015

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