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Stratigraphic approach to geological mapping of the late Quaternary volcanic island of Lipari (Aeolian Archipelago, southern Italy)

Federico Lucchi, Claudio Antonio Tranne and Piermaria Luigi Rossi
Stratigraphic approach to geological mapping of the late Quaternary volcanic island of Lipari (Aeolian Archipelago, southern Italy) (in Stratigraphy and geology of volcanic areas, Gianluca Groppelli (editor) and Lothar Viereck-Goette (editor))
Special Paper - Geological Society of America (April 2010) 464: 1-32

Abstract

Geological mapping of the island of Lipari at 1:10,000 scale was performed by adopting a stratigraphic approach based on the integrated use of lithostratigraphic units, lithosomes, and unconformity-bounded units. This approach allows the geological peculiarity of this volcanic area to be reproduced through documentation and interpretation of the different rock types (using lithostratigraphic units), and definition of the geometry of rock bodies (using lithosomes), with emphasis on unconformities in the volcano-sedimentary architecture (using unconformity-bounded units). In particular, by concentrating on accurate tephrostratigraphy and deposits formed during periods of prolonged volcanic quiescence (e.g., marine deposits and epiclastic products), unconformity-bounded units provide the main stratigraphic constraints at a regional level. Two first-order unconformities (U (sub I) and U (sub II) ), represented by surfaces of erosion bounding marine deposits emplaced during marine oxygen isotope stage (MIS) 5, can be correlated across most of the Aeolian archipelago. Furthermore, four second-order and seven third-order unconformities represented by erosion and non-deposition surfaces formed during main periods of dormancy or minor sea-level fluctuations of MIS 5 are introduced. The reconstructed unconformity-bounded stratigraphy, together with other rock-stratigraphic units, provides an effective reconstruction of the geological evolution of Lipari, ranging between ca. 220 ka and the present time, as the result of the interplay among volcanic activity of local and external provenance, sea-level fluctuations, and regional fault systems. In this framework, Lipari's eruptive history encompasses five successive eruptive epochs characterized by distinctive centers of eruption (eastwards shifting), eruption type (from mainly strombolian to hydromagmatic), and chemical composition (from calc-alkaline basalt-andesite to high-K calc-alkaline rhyolite).


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 464
Title: Stratigraphic approach to geological mapping of the late Quaternary volcanic island of Lipari (Aeolian Archipelago, southern Italy)
Title: Stratigraphy and geology of volcanic areas
Author(s): Lucchi, FedericoTranne, Claudio AntonioRossi, Piermaria Luigi
Author(s): Groppelli, Gianlucaeditor
Author(s): Viereck-Goette, Lothareditor
Affiliation: Universita di Bologna, Dipartimento di Scienze della Terra e Geologico-Ambientali, Bologna, Italy
Affiliation: CNR, Istituto per la Dinamica dei Processi Ambientale, Milan, Italy
Pages: 1-32
Published: 201004
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 72
Accession Number: 2010-064052
Categories: Quaternary geologyIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. sects., geol. sketch maps
N38°27'00" - N38°31'60", E14°52'60" - E14°58'60"
Secondary Affiliation: Friedrich-Schiller-Universitaet Jena, DEU, Federal Republic of Germany
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201035
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