Volcano-tectonic scenario of Vulsini volcanoes (Central Italy) from LANDSAT-MSS images and digital elevation data

Freda, Carmela; Palladino, Danilo M.; Pignatti, Sandro; Trigila, R.; Onorati, G.; Poscolieri, M.

doi:10.1016/0924-2716(90)90026-8

Cited by 7 publications

(6 citation statements)

References 6 publications

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“…This consistency implies a close relationship between morphology and tectonics and suggests that the observed lineaments are the surface expression of faults and fractures Nappi et al, 1987Nappi et al, , 1991Freda et al, 1990;Di Filippo et al, 1999;Ciotoli et al, 2003). As a result, the structure of the NE portion of the caldera can be interpreted as consisting of several subparallel tangential faults and extension fractures, consistent with previous studies Freda et al, 1990;Nappi et al, 1991;Ciotoli et al, 2003). The largest fracture systems, developed on the east and north portions, coincide with the fault scarps (Fig.…”

Section: Main Structural Features Of Bolsena Calderasupporting

confidence: 88%

“…9, inset A;Buona sorte et al, 1987;Freda et al, 1990;Nappi et al, 1991). In between fault scarps, as observed at site 10 ( Fig.…”

Section: Main Structural Features Of Bolsena Calderamentioning

confidence: 67%

“…Comparison of our remote-sensing analysis with geological data available from published studies Nappi et al, 1987Nappi et al, , 1991Nappi et al, , 1998Freda et al, 1990;Ciotoli et al, 2003) allows the recognition of the vents in the Bolsena area. These are largely located along the lineaments on the north and east caldera rim, and they are related to all the main phases after the activity of the Paleovulsini complex.…”

Section: Remote-sensing Datamentioning

confidence: 90%

“…Its east and north rims show well-developed concentric fault systems Nappi et al, 1987Nappi et al, , 1991Freda et al, 1990). The subsurface portion of Bolsena caldera has been studied from sequences within geothermal wells, and many deep features are suffi ciently known (Buonasorte et al, , 1995Enel, 1991;Nappi et al, 1991, and references therein; Barberi et al, 1994;Cioni , 1993;Di Filippo et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Caldera structure, amount of collapse, and erupted volumes: The case of Bolsena caldera, Italy

Acocella

Palladino

Cioni

et al. 2012

Geological Society of America Bulletin

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Calderas are common on volcanoes, but their structure is seldom visible. The 19-kmwide Bolsena caldera, Italy, formed between 0.6 and 0.2 Ma. The largely preserved structural rim and subsurface data make Bolsena ideal to investigate caldera structure in relation to the subsidence and erupted volume. In this paper, we use remote sensing, fi eld analysis, and available subsurface data. At the surface, the caldera passes from a down-sag (south rim) to a narrow and densely faulted area (north rim), with outer normal and inner reverse faults. The caldera structure on the widely faulted east rim appears to be scale dependent, with a staircase-like fault zone (larger scale), horst-and-graben-like structures (intermediate scale), and domino-like structures (smaller scale). Subsurface data indicate asymmetric collapse, with a northward increase in subsidence, ranging from diffuse (to the south) to focused (to the north) deformation at the surface. The collapse rate, constant between ca. 490 and 175 ka, was more than magma output between ca. 330 and 130 ka, highlighting signifi cant (~200 m) and prolonged (~200 ka) posteruptive subsidence. As the nearby Latera caldera (west rim of Bolsena) was mostly active between ca. 265 and 160 ka, much of the subsidence at Bolsena may be related to this activity, suggesting a common magmatic reservoir. The subsidence-related structural variations along the caldera rim and the signifi cant posteruptive subsidence found at Bolsena have not been found in other calderas. © 2012 Geological Society of America

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Section: Main Structural Features Of Bolsena Calderasupporting

confidence: 88%

“…9, inset A;Buona sorte et al, 1987;Freda et al, 1990;Nappi et al, 1991). In between fault scarps, as observed at site 10 ( Fig.…”

Section: Main Structural Features Of Bolsena Calderamentioning

confidence: 67%

Section: Remote-sensing Datamentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Caldera structure, amount of collapse, and erupted volumes: The case of Bolsena caldera, Italy

Acocella

Palladino

Cioni

et al. 2012

Geological Society of America Bulletin

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show abstract

“…The Bolsena volcanic complex began its activity after the formation of the palaeo-Bolsena caldera and lasted for few hundred thousand years , and references therein). It developed mainly in the i t i n e r a r y 108 eastern sector of the Vulsinian district with the formation of a large caldera depression partly occupied by the Bolsena Lake and produced two thick ignimbrite sheets, fall deposits and lava flows which built an ignimbrite shield (Freda et al, 1990;Nappi et al, 1998;Palladino et al, 2010). Fissural lava flows, formed a lava plateau south of Bolsena Lake in the Marta-Tuscania area (Palladino et al, 1994).…”

Section: Stop 43: Vico Caldera Rim (42°21'31"n -12°08'31"e)mentioning

confidence: 99%