Mid-distal occurrences of the Albano Maar pyroclastic deposits and their relevance for reassessing the eruptive scenarios of the most recent activity at the Colli Albani Volcanic District, Central Italy

Giaccio, Biagio; Sposato, A.; Gaeta, Mario; Marra, Fabrizio; Palladino, Danilo M.; Taddeucci, Jacopo; Barbieri, Mário; Messina, Paolo; Rolfo, Mario Federico

doi:10.1016/j.quaint.2006.10.013

Cited by 54 publications

(35 citation statements)

References 22 publications

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“…The fallout beds are characteristic of sustained Hawaiian, violent Strombolian to sub-Plinian eruption columns. For example, the ultrapotassic Albano multiple maar hosted repeated cycles of eruptive activity through 35 kyrs, reaching estimated maximum column height of 18-21 km (and corresponding peak magma discharge rate up to 2.6 × 10 7 kg/s), with erupted products requiring differentiation in a sizeable magma reservoir (Giaccio et al, 2007). Most volcanoes of this type involve relatively mafic magmas, for which the criteria to assess the phreatomagmatic vs. magmatic volatile-driven nature of associated deposits have been established in the literature (e.g., Heiken and Wohletz, 1985).…”

Section: Intermediate Examplesmentioning

confidence: 99%

Maars to calderas: end-members on a spectrum of explosive volcanic depressions

et al. 2015

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We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note-we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not related to such activity). The former are dominated by ejection of material during numerous discrete phreatomagmatic explosions, brecciation, and subsidence of diatreme fill, while the latter are dominated by subsidence over a partly evacuated magma chamber during sustained, magmatic volatile-driven discharge. Many examples share characteristics of both, including landforms that are identified as maars but preserve deposits from non-phreatomagmatic explosive activity, and ambiguous structures that appear to be coalesced maars but that also produced sustained explosive eruptions with likely magma reservoir subsidence. A convergence of research directions on issues related to magma-water interaction and shallow reservoir mechanics is an important avenue toward developing a unified picture of the maar-diatreme-caldera spectrum.

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Section: Intermediate Examplesmentioning

confidence: 99%

Maars to calderas: end-members on a spectrum of explosive volcanic depressions

et al. 2015

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“…Later, Narcisi (1994) analysed two foiditic tephra occurring in the GeoLazio and Telespazio cores (TS in Fig. 1), at ∼ 12-14 m depth, which, on the basis of their peculiar glass major element composition, were attributed to the eruptive units Albano 5-7 (Giaccio et al, 2007), from a cluster of Colli Albani eruptions dated between 40 and 36 ka (Giaccio et al, 2009). Finally, the tephrostratigraphic study of a 30 m deep borehole (SP in Fig.…”

Section: Geological Setting and General Backgroundmentioning

confidence: 99%

A key continental archive for the last 2 Ma of climatic history of the central Mediterranean region: A pilot drilling in the Fucino Basin, central Italy

et al. 2015

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Abstract. An 82 m long sedimentary succession was retrieved from the Fucino Basin, the largest intermountain tectonic depression of the central Apennines. The basin hosts a succession of fine-grained lacustrine sediments (ca. 900 m-thick) possibly continuously spanning the last 2 Ma. A preliminary tephrostratigraphy study allows us to ascribe the drilled 82 m long record to the last 180 ka. Multi-proxy geochemical analyses (XRF scanning, total organic/inorganic carbon, nitrogen and sulfur, oxygen isotopes) reveal noticeable variations, which are interpreted as paleohydrological and paleoenvironmental expressions related to classical glacial-interglacial cycles from the marine isotope stage (MIS) 6 to present day. In light of the preliminary results, the Fucino sedimentary succession is likely to provide a long, continuous, sensitive, and independently dated paleoclimatic archive of the central Mediterranean area.

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“…Low plumes of ash were also produced in historical maar-forming eruptions, but the sheet-like deposits of these plumes, or of those from pre-historic eruptions, have yet to be well characterized. indicate fall-deposit lobes from Ukinrek, and Giaccio et al (2007) give qualitative information on fall-deposit distribution from Albano maar.…”

Section: Ejecta Rings and Ash Sheets: Constructive Deposits Of Maar Vmentioning

confidence: 99%

Maar-diatreme volcanoes: A review

White

Ross

2011

Journal of Volcanology and Geothermal Research

342

251

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Maar-diatreme volcanoes are produced by explosive eruptions that cut deeply into the country rock. A maar is the crater cut into the ground and surrounded by an ejecta ring, while the diatreme structure continues downward and encloses diatreme and root zone deposits. Here we attempt an evenhanded review of maardiatreme volcanology that extends from mafic to kimberlitic varieties, and from historical maar eruptions to deeply eroded or mined diatreme structures. We conclude that maar-diatreme eruptions are episodic. Ejecta rings provide invaluable insight into eruption processes and sequence, but are incomplete records of diatreme formation. Deposits within the diatreme structure include, in varying proportions, lower unbedded deposits sometimes typified by subvertical contacts among domains of debris emplaced sequentially, and upper bedded deposits formed by sedimentation on surfaces open to the atmosphere. A basal root zone comprises the transition from coherent magmatic feeder dike to clastic deposits formed by fragmentation of magma and enclosing country rock; root zones are irregular in form, and the clastic deposits are typically intruded by contorted dikes. Irregular root zone-like chaotic breccias cut by contorted dikes are also present within diatreme deposits, where they represent intra-diatreme fragmentation zones and record changes in the location of the explosion locus during eruption.

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Mid-distal occurrences of the Albano Maar pyroclastic deposits and their relevance for reassessing the eruptive scenarios of the most recent activity at the Colli Albani Volcanic District, Central Italy

Cited by 54 publications

References 22 publications

Maars to calderas: end-members on a spectrum of explosive volcanic depressions

Maars to calderas: end-members on a spectrum of explosive volcanic depressions

A key continental archive for the last 2 Ma of climatic history of the central Mediterranean region: A pilot drilling in the Fucino Basin, central Italy

Maar-diatreme volcanoes: A review

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