Fluid geochemistry of the Mondragone hydrothermal systems (southern Italy): water and gas compositions vs. geostructural setting

Cuoco, Emilio; Minissale, A.; Leo, Antonella “Magda” Di; Tamburrino, Stella; Iorio, Marina; Tedesco, Dario

doi:10.1007/s00531-016-1439-4

Cited by 23 publications

(14 citation statements)

References 71 publications

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“…This inference is consistent with the present-day occurrence of volcanic-derived hydrothermal fluids in springs and wells located along the margins of the Mt. Massico ridge (e.g., Corniello et al, 2015;Cuoco et al, 2017).…”

Section: Tectonicssupporting

confidence: 83%

Development of an Intrawedge Tectonic Mélange by Out‐of‐Sequence Thrusting, Buttressing, and Intraformational Rheological Contrast, Mt. Massico Ridge, Apennines, Italy

et al. 2019

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The Mt. Massico ridge (central southern Apennines, Italy) is characterized by a ~150‐m‐thick tectonic mélange located at the base of a Tortonian‐lower Messinian heterogeneous clastic succession consisting of layered sandstones, limestones, marls, and claystones with intercalated mass wasting deposits and isolated olistoliths, which deposited above Meso‐Cenozoic limestones. Geological mapping and structural analyses, integrated with illite‐smectite paleothermal indicators and U‐Pb dating of syntectonic calcite veins and slickenfibers, allowed us to unravel (1) the tectonic evolution of the Mt. Massico ridge and (2) the development of the intrawedge tectonic mélange in the framework of the Apennine accretionary wedge evolution. Results show that after thrusting and folding of Meso‐Cenozoic limestones during late Tortonian times (7.0 ± 1.6 Ma), late Messinian‐early Pliocene out‐of‐sequence thrusting (5.1 ± 3.7 Ma) juxtaposed ~3,300‐m‐thick, imbricate thrust sheets above the Tortonian‐lower Messinian clastic succession. During out‐of‐sequence thrusting, the base of the weak clastic deposits acted as a décollement horizon due to the rheological contrast and mechanical buttress with the underlying competent Mesozoic‐Cenozoic limestones. Heterogeneous deformation along the base of the clastic succession was accommodated by ductile pressure solution of claystones and marls, by brittle stratal disruption and fracturing/veining of competent olistoliths and primary foliation (i.e., sandstones and limestones strata), thus leading to the development of a tectonic mélange. The compressional phase was followed by extensional tectonics after the late Pliocene (minimum age 2.9 ± 0.5 Ma). We conclude that out‐of‐sequence thrusting, buttressing, and intraformational rheological contrast can be fundamental factors for the development of intrawedge tectonic mélange.

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Section: Tectonicssupporting

confidence: 83%

Development of an Intrawedge Tectonic Mélange by Out‐of‐Sequence Thrusting, Buttressing, and Intraformational Rheological Contrast, Mt. Massico Ridge, Apennines, Italy

et al. 2019

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“…This suggests that such bodies may have followed an E-W trend, potentially correlating to the main direction of normal to oblique faults active during the Quaternary period [35,40,[76][77][78]. A recent study [79] demonstrated the presence of an active hydrothermal system in the onshore sector, corroborating our hypothesis of hydrothermal pumping.…”

Section: Biogenic Gas or Hydrothermal Venting?supporting

confidence: 74%

Coastal Evolution, Hydrothermal Migration Pathways and Soft Deformation along the Campania Continental Shelf (Southern Tyrrhenian Sea): Insights from High-Resolution Seismic Profiles

et al. 2018

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Abstract:A closely spaced set of high-resolution Chirp-Sonar and Sparker profiles and swath bathymetric data was acquired in 2013 for the I-AMICA Project off the Volturno River mouth (Southern Tyrrhenian Sea) by the Istituto per l'Ambiente Marino Costiero (IAMC), National Research Council of Italy (CNR). The palaeo-topography of three key surfaces, represented by the bounding surfaces of the post-glacial lithosomes, was mapped by the interpolation of seismically detected reflectors. The morphology of the surface related to the Last Glacial Maximum (LGM) regression revealed the presence of fault linkages which defined a small-scale accommodation zone with an E-W trending interbasinal relative high. The observed set of oppositely dipping faults, NNWand ENE-directed, locally controlled the deposition of the paralic/deltaic bodies during the post-glacial rise in sea level, as testified by their wedge-shaped geometries and shifting depocentres. The deformation may be linked to the Campi Flegrei caldera collapse following the Neapolitan Yellow Tuff (NYT) eruption and aged 15 ka BP. The relevant thickness of the Transgressive System Tract (TST) testifies to an increased sediment yield and intense reworking in coastal areas, probably driven by the high volcanoclastic supply during volcanic paroxysm, almost coeval with the post-glacial transgression. Fluid escape features linked to an E-W striking fluid front at the outer shelf suggest the presence of an hydrothermal system controlled by the predominant direction of normal to oblique Quaternary-active faults and by lithologic discontinuities across the sedimentary pile.

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“…Groundwater below the tuff presents interesting chemical characteristics: temperatures and average electrical conductivities are above 20 • C and >20,000 µS/cm, respectively, while, in the neighboring areas, these parameters show lower values (i.e., conductivity around 1000 µS/cm). These anomalies can be explained by the rise of deep mineralized waters (rich in gas, above all CO 2 of inorganic origin [61]) along the faults of the carbonate bedrock. These deep waters mix with groundwater below the tuff and increase their total dissolved solids and temperature, features that are distributed along the groundwater flow direction [22].…”

Section: Hydrogeological Setting and Conceptual Model Of The Geothermmentioning

confidence: 99%

“…Combining all data, a geothermal model that controls the mineralization of groundwater at the base of Mt. Petrino can be proposed [1,10,22,26,60,61]. According to this model, the geothermal reservoir corresponds to the carbonate bedrock of the Mondragone plain.…”

Section: Hydrogeological Setting and Conceptual Model Of The Geothermmentioning

confidence: 99%

“…Therefore, the geothermal process is closely linked to the faults, as shown by temperature increase, which occurs, as measured continuously along the well (Table 3), at the same levels of major fracturing degree. Therefore, it is very likely that these levels represent the preferential path along which the hot fluid rise occurs [60,61].…”

Section: Hydrogeological Setting and Conceptual Model Of The Geothermmentioning

confidence: 99%

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Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

Iorio¹,

Carotenuto

Corniello

et al. 2020

Energies

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In this study, the sustainability of low-temperature geothermal field exploitation in a carbonate reservoir near Mondragone (CE), Southern Italy, is analyzed. The Mondragone geothermal field has been extensively studied through the research project VIGOR (Valutazione del potenzIale Geotermico delle RegiOni della convergenza). From seismic, geo-electric, hydro-chemical and groundwater data, obtained through the experimental campaigns carried out, physiochemical features of the aquifers and characteristics of the reservoir have been determined. Within this project, a well-doublet open-loop district heating plant has been designed to feed two public schools in Mondragone town. The sustainability of this geothermal application is analyzed in this study. A new exploration well (about 300 m deep) is considered to obtain further stratigraphic and structural information about the reservoir. Using the derived hydrogeological model of the area, a numerical analysis of geothermal exploitation was carried out to assess the thermal perturbation of the reservoir and the sustainability of its exploitation. The effect of extraction and reinjection of fluids on the reservoir was evaluated for 60 years of the plant activity. The results are fundamental to develop a sustainable geothermal heat plant and represent a real case study for the exploitation of similar carbonate reservoir geothermal resources. Author Contributions: Conceptualization, M.I., N.M., and L.V.; Data curation, M.I. and A.C. (Alfonso Corniello); Formal analysis, S.D.F.; Funding acquisition, M.I., A.C. (Alberto Carotenuto), N.M., and L.V.; Methodology, S.D.F. and N.M.; Project administration, M.I., A.C. (Alberto Carotenuto) and N.M.; Writing-original draft, S.D.F.; Writing-review and editing, M.I., A.

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Fluid geochemistry of the Mondragone hydrothermal systems (southern Italy): water and gas compositions vs. geostructural setting

Cited by 23 publications

References 71 publications

Development of an Intrawedge Tectonic Mélange by Out‐of‐Sequence Thrusting, Buttressing, and Intraformational Rheological Contrast, Mt. Massico Ridge, Apennines, Italy

Development of an Intrawedge Tectonic Mélange by Out‐of‐Sequence Thrusting, Buttressing, and Intraformational Rheological Contrast, Mt. Massico Ridge, Apennines, Italy

Coastal Evolution, Hydrothermal Migration Pathways and Soft Deformation along the Campania Continental Shelf (Southern Tyrrhenian Sea): Insights from High-Resolution Seismic Profiles

Low Enthalpy Geothermal Systems in Structural Controlled Areas: A Sustainability Analysis of Geothermal Resource for Heating Plant (The Mondragone Case in Southern Appennines, Italy)

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