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Book Chapter

Eruptive history and magmatic evolution of the island of Salina (central Aeolian archipelago)

By
F. Lucchi
F. Lucchi
Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Alma Mater Studiorum, Università di Bologna, Piazza di Porta S. Donato 1, 40126 Bologna, Italy
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R. Gertisser
R. Gertisser
School of Physical and Geographical Sciences, Keele University, Keele, Staffordshire ST5 5BG, UK
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J. Keller
J. Keller
Institut für Geowissenschaften – Mineralogie-Geochemie, Universität Freiburg, Albertstrasse 23b, 79104 Freiburg, Germany
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F. Forni
F. Forni
Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Alma Mater Studiorum, Università di Bologna, Piazza di Porta S. Donato 1, 40126 Bologna, Italy
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G. De Astis
G. De Astis
Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Sismologia e Tettonofisica, Via di Vigna Murata 605, 00143 Roma, Italy
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C. A. Tranne
C. A. Tranne
Dipartimento di Scienze Biologiche, Geologiche e Ambientali, Alma Mater Studiorum, Università di Bologna, Piazza di Porta S. Donato 1, 40126 Bologna, Italy
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Published:
January 01, 2013

Abstract

Stratigraphic, structural, volcanological and geochemical data allow a detailed reconstruction of the geological history of the island of Salina (central Aeolian sector). Its subaerial volcanism (c. 244 ka to 15.6 ka) developed through six successive Eruptive Epochs interrupted by major quiescence periods, volcano-tectonic collapses and recurrent episodes of marine terrace formation during MIS 7 and MIS 5. Several stratovolcanoes were constructed by strombolian and effusive (Pizzo Capo, Monte Rivi, Monte Fossa delle Felci, Monte dei Porri) to hydromagmatic and subplinian (Monte dei Porri, Pollara) activity, with a general east–west shift of active vents, controlled primarily by the dominant NNW–SSE and minor NE–SW regional tectonic trends, and a progressive chemical differentiation of the erupted products from calc-alkaline basalts to rhyolites. The magma compositions and variations through time are the result of contamination of primary magmas derived from a subduction-modified mantle source with the Calabro–Peloritano lower crust and subsequent differentiation dominated by polybaric fractional crystallization. Magma mixing and mingling processes occurred during individual eruptions. The early basalts were fed from deep reservoirs located near the crust–mantle boundary, whereas the later andesitic to dacitic and, ultimately, rhyolitic magmas originated through combined assimilation and fractional crystallization processes in magma reservoirs at mid- to upper-crustal levels.

DVD:

The 10 000 scale geological map of Salina is included on the DVD in the printed book and can also be accessed online at http://www.geolsoc.org.uk/Memoir37-electronic. Also included is a full geochemical dataset for Salina.

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Contents

Geological Society, London, Memoirs

The Aeolian Islands Volcanoes

F. Lucchi
F. Lucchi
University of Bologna, Italy
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A. Peccerillo
A. Peccerillo
University of Perugia, Italy
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J. Keller
J. Keller
University Freiburg, Germany
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C. A. Tranne
C. A. Tranne
University of Bologna, Italy
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P. L. Rossi
P. L. Rossi
University of Bologna, Italy
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Geological Society of London
Volume
37
ISBN electronic:
9781862396371
Publication date:
January 01, 2013

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