Coeval Uplift and Subsidence Reveal Magma Recharging Near Rome (Italy)

Trasatti, Elisa; Marra, Fabrizio; Polcari, Marco; Etiope, Giuseppe; Ciotoli, Giancarlo; Darrah, Thomas H.; Tedesco, Dario; Stramondo, Salvatore; Florindo, Fabio; Ventura, Guido

doi:10.1029/2017gc007303

Cited by 16 publications

(17 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on our new measurements, we support this interpretation, particularly in the area of Ciomadul volcano. This high magmatic He content of the gases is not unique and resembles what Trasatti et al (2018) proposed for Colli Albani volcanic complex, another long-dormant volcanic field, where they assumed more than 80% mantle-derived component in the emitted CO 2 gases. If no interaction with crustal fluids occurred, the magmatic component in the gases could exceed even the 80%.…”

Section: 1029/2018gc008153supporting

confidence: 70%

“…Remarkably, we obtained such high values for the areas having a larger diffusive CO 2 flux. This high magmatic He content of the gases is not unique and resembles what Trasatti et al (2018) proposed for Colli Albani volcanic complex, another long-dormant volcanic field, where they assumed more than 80% mantle-derived component in the emitted CO 2 gases. However, the magmatic component can be lower, if interaction between the ascending gases with crustal gases occurred at shallow crustal depth, a possibility what we cannot test at this stage but requires further studies.…”

Section: 1029/2018gc008153supporting

confidence: 70%

“…Ciomadul literature data after Althaus et al (2000), Frunzeti (2013) and Vaselli et al (2002). Recent investigations highlighted the presence of an active plumbing system even below volcanoes which last erupted >10 kyr (e.g., Colli Albani, Italy; Trasatti et al, 2018;Uturuncu, Bolivia;Sparks et al, 2008;Comeau et al, 2015;Tatun, Taiwan;Konstantinou et al, 2007;Lin & Pu, 2016). SCLM = subcontinental lithospheric mantle.…”

Section: Relationship With the Deep Magmatic Systemmentioning

confidence: 99%

“…Geochemistry, Geophysics, Geosystems the surrounding areas that are generally characterized by intense gas emissions (Burton et al, 2013, and references therein). Recent investigations highlighted the presence of an active plumbing system even below volcanoes which last erupted >10 kyr (e.g., Colli Albani, Italy; Trasatti et al, 2018;Uturuncu, Bolivia;Sparks et al, 2008;Comeau et al, 2015;Tatun, Taiwan;Konstantinou et al, 2007;Lin & Pu, 2016). Harangi, Novák, et al (2015) suggested the term PAMS volcano, that is, volcano with potentially active magma storage for these long-dormant volcanoes, which have clear implication for a subvolcanic melt-bearing magma plumbing system.…”

Section: 1029/2018gc008153mentioning

confidence: 99%

See 3 more Smart Citations

Noble Gas and Carbon Isotope Systematics at the Seemingly Inactive Ciomadul Volcano (Eastern‐Central Europe, Romania): Evidence for Volcanic Degassing

Kis

Caracausi

Palcsu

et al. 2019

Geochem Geophys Geosyst

View full text Add to dashboard Cite

Ciomadul is the youngest volcano in the Carpathian‐Pannonian Region, Eastern‐Central Europe, which last erupted 30 ka. This volcano is considered to be inactive, however, combined evidence from petrologic and magnetotelluric data, as well as seismic tomography studies, suggests the existence of a subvolcanic crystal mush with variable melt content. The volcanic area is characterized by high CO2 gas output rate, with a minimum of 8.7 × 103 t/year. We investigated 31 gas emissions at Ciomadul to constrain the origin of the volatiles. The δ13C–CO2 and 3He/4He compositions suggest the outgassing of a significant component of mantle‐derived fluids. The He isotope signature in the outgassing fluids (up to 3.10 Ra) is lower than the values in the peridotite xenoliths of the nearby alkaline basalt volcanic field (R/Ra 5.95 Ra ± 0.01), which are representative of a continental lithospheric mantle and significantly lower than MORB values. Considering the chemical characteristics of the Ciomadul dacite, including trace element and Sr–Nd and O isotope compositions, an upper crustal contamination is less probable, whereas the primary magmas could have been derived from an enriched mantle source. The low He isotopic ratios could indicate a strongly metasomatized mantle lithosphere. This could be due to infiltration of subduction‐related fluids and postmetasomatic ingrowth of radiogenic He. The metasomatic fluids are inferred to have contained subducted carbonate material resulting in a heavier carbon isotope composition (δ13C is in the range of −1.4‰ to −4.6‰) and an increase of CO2/3He ratio. Our study shows the magmatic contribution to the emitted gases.

show abstract

Section: 1029/2018gc008153supporting

confidence: 70%

Section: 1029/2018gc008153supporting

confidence: 70%

Section: Relationship With the Deep Magmatic Systemmentioning

confidence: 99%

Section: 1029/2018gc008153mentioning

confidence: 99%

See 2 more Smart Citations

Noble Gas and Carbon Isotope Systematics at the Seemingly Inactive Ciomadul Volcano (Eastern‐Central Europe, Romania): Evidence for Volcanic Degassing

Kis

Caracausi

Palcsu

et al. 2019

Geochem Geophys Geosyst

View full text Add to dashboard Cite

show abstract

“…In fact, there are many long-dormant volcanoes world-wide which erupted several 10s of thousand years ago, but melt-bearing magma still can be detected beneath them and therefore, renewal of volcanism cannot be excluded (e.g., Colli Albani, Italy, last erupted ca. 36 ka; Freda et al, 2006;Trasatti et al, 2018). Since the potential of reawakening is controlled…”

Section: Introductionmentioning

confidence: 99%

Episodes of dormancy and eruption of the Late Pleistocene Ciomadul volcanic complex (Eastern Carpathians, Romania) constrained by zircon geochronology

Molnár

Lukács

Dunkl

et al. 2019

Journal of Volcanology and Geothermal Research

View full text Add to dashboard Cite

Ciomadul is the youngest volcanic system in the Carpathian-Pannonian Region recording eruptive activity from ca. 1 Ma to 30 ka. Based on combined zircon U-Th and (U-Th)/He geochronology, Ciomadul volcanism is divided into two main eruptive periods: Old Ciomadul (1 Ma-300 ka; OCEP) and Young Ciomadul Eruptive Period (160-30 ka; YCEP). OCEP activity comprises Eruptive Epochs 1-3, whereas new ages for eight lava domes and four pyroclastic units belonging to the YCEP lead to its further subdivision into two eruptive epochs: Eruptive Epochs 4 and 5. The extrusion of most of the lava domes occurred between 160 and 90 ka (Eruptive Epoch 4) during three eruptive episodes at ca. 155 ka, 135 ka and 95 ka (Eruptive Episodes 4/1, 4/ 2 and 4/3, respectively) along a NE-SW lineament, which is perpendicular to the regional NW-SE trend of the Călimani-Gurghiu-Harghita volcanic chain. Eruptive Epoch 5 occurred after a ca. 40 kyr of quiescence at ca. 55-30 ka, and is mainly characterized by explosive eruptions with a minor lava dome building activity. All of the dated pyroclastic outcrops, together with the lava dome of Piscul Pietros, belong to the older Eruptive Episode 5/1, with an eruption age of 55-45 ka. The eruption centers of Eruptive Epoch 5 are located at the junction of the conjugated NW-SE and NE-SW lineaments defined by the older eruptive centers. The whole-rock geochemistry of all studied samples is fairly homogeneous (SiO 2 = 63-69 wt%, K 2 O = 3-4 wt%). It also overlaps with the composition of the lava domes of the Old Ciomadul Eruptive Period, implying a monotonous geochemical characteristic for the past 1 Myr. The eruption rates for the Ciomadul volcanism were determined based on the erupted lava dome volume calculations, supplemented with the eruption ages. The activity peaked during the Eruptive Epoch 4 (160-90 ka), having an eruption rate of 0.1 km 3 /kyr. In comparison, these values are 0.05 km 3 /kyr for the YCEP (160-30 ka) and 0.01 km 3 /kyr for the overall Ciomadul volcanism (1 Ma-30 ka). Based on the geochemical characteristics, the quiescence periods and the lifetime of the complex, as well as the relatively small amount of erupted material, this volcanic system can be placed in a subduction-related post-collisional geodynamic setting, which shows strong chemical similarities to continental arc volcanism. The commonly found long repose times between the active phases suggest that the nature of a volcano cannot be understood solely based on the elapsed time since the last eruption. Instead, comprehensive geochronology, coupled with the understanding of the magma storage behavior could be a base of hazard assessment for volcanic fields, where the last eruptions occurred several 10's of thousand years ago and therefore they are not considered as potentially active.

show abstract

Rapid accumulation and ascent precedes caldera forming eruption of low viscosity magma

Jorgenson,

Caricchi,

Chiaradia

et al. 2024

Contrib Mineral Petrol

View full text Add to dashboard Cite

Mafic magma is commonly associated with effusive eruptions, however several mafic volcanoes throughout the globe have produced explosive eruptions. Here we present one such volcano – Colli Albani. Colli Albani is 20 km SE of Rome and produced seven large volume ignimbrites. Field observations, mineral chemistry, and Sr and Nd isotopes in clinopyroxene show that the high potassic, silica undersaturated and CO$$_{2}$$ 2 -rich magma typical of Colli Albani is produced by partial melting of a metasomatized mantle. Clinopyroxene based thermobarometry combined with thermal modelling, indicates rapid accumulation of magma into the shallow crust preceding the last caldera forming event (355 ka). The crystallization of high Mg# and high Cr$$_{2}$$ 2 O$$_{3}$$ 3 clinopyroxenes at low pressures and high temperatures indicates rapid magma ascent from the mantle. We suggest that a final rapid input of this deeply sourced magma destabilised the shallow and fast assembled magma reservoir and lead to the caldera forming event. Our findings have significant implications for the evaluation of the timescales of reactivation of Colli Albani and other similar long-quiescent calderas erupting low viscosity magmas, as rapid migration of magma to shallow reservoirs may result in short unrest periods prior to a large eruption.

show abstract

Coeval Uplift and Subsidence Reveal Magma Recharging Near Rome (Italy)

Cited by 16 publications

References 86 publications

Noble Gas and Carbon Isotope Systematics at the Seemingly Inactive Ciomadul Volcano (Eastern‐Central Europe, Romania): Evidence for Volcanic Degassing

Noble Gas and Carbon Isotope Systematics at the Seemingly Inactive Ciomadul Volcano (Eastern‐Central Europe, Romania): Evidence for Volcanic Degassing

Episodes of dormancy and eruption of the Late Pleistocene Ciomadul volcanic complex (Eastern Carpathians, Romania) constrained by zircon geochronology

Rapid accumulation and ascent precedes caldera forming eruption of low viscosity magma

Contact Info

Product

Resources

About