EBSCO Logo
Connecting you to content on EBSCOhost
Title

The 18.7 ka phreatomagmatic flank eruption on Etna (Italy): relationship between eruptive activity and sedimentary basement setting.

Authors

Andronico, Daniele; Branca, Stefano; Carlo, Paola Del

Abstract

This paper documents a phreatomagmatic flank eruption that occurred 18 700 ± 100 a BP, on the lower north-eastern slope of Etna during the Ellittico volcano activity, which produced fall and surge deposits. This type of eruption is connected to a sedimentary basement ridge at Etna. The interaction between the rising magma and the shallow groundwater hosted in the volcanic pile overlying the impermeable sediments resulted in phreatomagmatic instead of strombolian activity. Three eruptive phases are distinguished based on field and analytical data: (i) an explosive phreatomagmatic opening, (ii) a main phase producing coarse lithic-rich fallout and a strombolian deposit, and (iii) the final pulsating surge-forming phase. The discovery of this phreatomagmatic flank eruption, which occurred at lower altitude, raises important issues for previous hazard assessments at Etna.

Subjects

SEDIMENTS; STRUCTURAL geology

Publication

Terra Nova, 2001, Vol 13, Issue 4, p235

ISSN

0954-4879

Publication type

Academic Journal

DOI

10.1046/j.1365-3121.2001.00336.x

EBSCO Connect | Privacy policy | Terms of use | Copyright | Manage my cookies
Journals | Subjects | Sitemap
© 2025 EBSCO Industries, Inc. All rights reserved