Near-Bottom Magnetic Signatures of Submarine Hydrothermal Systems at Marsili and Palinuro Volcanoes, Southern Tyrrhenian Sea, Italy

Abstract

Research Article| December 01, 2014 Near-Bottom Magnetic Signatures of Submarine Hydrothermal Systems at Marsili and Palinuro Volcanoes, Southern Tyrrhenian Sea, Italy F. Caratori Tontini; F. Caratori Tontini † 1GNS Science, P.O. Box 30368, Lower Hutt, New Zealand †Corresponding author: e-mail, f.caratori.tontini@gns.cri.nz Search for other works by this author on: GSW Google Scholar G. Bortoluzzi; G. Bortoluzzi 2CNR, Ismar, via Gobetti, 101, 40129, Bologna, Italy Search for other works by this author on: GSW Google Scholar C. Carmisciano; C. Carmisciano 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy Search for other works by this author on: GSW Google Scholar L. Cocchi; L. Cocchi 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy Search for other works by this author on: GSW Google Scholar C.E.J. de Ronde; C.E.J. de Ronde 1GNS Science, P.O. Box 30368, Lower Hutt, New Zealand Search for other works by this author on: GSW Google Scholar M. Ligi; M. Ligi 2CNR, Ismar, via Gobetti, 101, 40129, Bologna, Italy Search for other works by this author on: GSW Google Scholar F. Muccini F. Muccini 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy Search for other works by this author on: GSW Google Scholar Author and Article Information F. Caratori Tontini † 1GNS Science, P.O. Box 30368, Lower Hutt, New Zealand G. Bortoluzzi 2CNR, Ismar, via Gobetti, 101, 40129, Bologna, Italy C. Carmisciano 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy L. Cocchi 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy C.E.J. de Ronde 1GNS Science, P.O. Box 30368, Lower Hutt, New Zealand M. Ligi 2CNR, Ismar, via Gobetti, 101, 40129, Bologna, Italy F. Muccini 3INGV, U.P. Geofisica e Tecnologie Marine, via Pezzino Basso, 2, 1902, Fezzano (SP), Italy †Corresponding author: e-mail, f.caratori.tontini@gns.cri.nz Publisher: Society of Economic Geologists First Online: 09 Mar 2017 Online Issn: 1554-0774 Print Issn: 0361-0128 © 2014 Society of Economic Geologists. Economic Geology (2014) 109 (8): 2119–2128. https://doi.org/10.2113/econgeo.109.8.2119 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation F. Caratori Tontini, G. Bortoluzzi, C. Carmisciano, L. Cocchi, C.E.J. de Ronde, M. Ligi, F. Muccini; Near-Bottom Magnetic Signatures of Submarine Hydrothermal Systems at Marsili and Palinuro Volcanoes, Southern Tyrrhenian Sea, Italy. Economic Geology 2014;; 109 (8): 2119–2128. doi: https://doi.org/10.2113/econgeo.109.8.2119 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyEconomic Geology Search Advanced Search Abstract Near-bottom magnetic field data were collected using a towed magnetometer over selected parts of Palinuro and Marsili submarine volcanoes in the southern Tyrrhenian Sea, Italy. We obtained equivalent magnetizations maps at these sites by inverting the corresponding magnetic anomalies, highlighting the seafloor expression of hydrothermal alteration. Zones of reduced magnetization are interpreted as evidence for alteration related to hydrothermal processes; they are associated with water-column and seafloor observations of hydrothermal activity and altered host rocks. At Marsili volcano, a large elliptical area of reduced magnetization is located south of the summit cone and perpendicular to the trend of Marsili volcano itself. This confirms the presence of a large hydrothermal system centered over the more recent eastern volcanic ridge and its associated magma chamber. Similarly, areas of reduced magnetization over Palinuro caldera are consistent with hydrothermal venting occurring along the caldera walls, consistent with permeability structures related to caldera ring faults providing preferred pathways for the upflow of hydrothermal fluids. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.