Hydrogeological mapping of heterogeneous and multi-layered ophiolitic aquifers (Mountain Prinzera, northern Apennines, Italy)

Segadelli, Stefano; Vescovi, Paolo; Chelli, Alessandro; Petrella, Emma; Nardo, Maria Teresa De; Gargini, Alessandro; Celico, Fulvio

doi:10.1080/17445647.2017.1376228

Cited by 13 publications

(11 citation statements)

References 37 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Italy, interesting results have been obtained in hypersaline ) and hydrothermal (Bucci et al 2011) systems, and other studies are in progress in hyperalkaline environments (Segadelli 2014).…”

Section: Discussionmentioning

confidence: 98%

Microorganisms as contaminants and natural tracers: a 10-year research in some carbonate aquifers (southern Italy)

et al. 2015

Self Cite

View full text Add to dashboard Cite

Limestone aquifers provide the main drinking water resources of southern Italy. Due to cattle grazing and/or manure spreading, these aquifers are often characterized by microbial contamination of groundwater. The aim of this paper is to summarize the results obtained during a 10-year research carried out in experimental field sites in southern Italy, analyzing (1) the influence of the topsoil of pyroclastic origin on the migration of microbial cells from the ground towards the groundwater, and then on the groundwater vulnerability, (2) the influence of the rainfall regime on the breakthrough at the springs, (3) the reliability of thermotolerant coliforms and fecal enterococci as bacterial indicators of microbial contamination, and (4) the effectiveness of microorganisms as natural tracers for some hydrogeological purposes. The results obtained showed that fecal enterococci are a more reliable indicator than thermotolerant coliforms for detecting contamination and that the entity and distribution over time of microbial contamination of fecal origin are influenced by several factors, such as precipitation regime, thermal regime and existence and thickness of the topsoil of pyroclastic origin. Moreover, the migration of a significant amount of bacterial cells through the topsoil and the underlying carbonate rocks allows the utilization of microorganisms as effective natural tracers, to be coupled with other classic tracers to study the recharge and the flow processes. In a broader perspective, these results can be used to optimize the investigations in other hydrogeological scenarios, with emphasis on those where different water types coexist and interact in same aquifer systems

show abstract

Section: Discussionmentioning

confidence: 98%

Microorganisms as contaminants and natural tracers: a 10-year research in some carbonate aquifers (southern Italy)

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Ophiolitic rocks are fragments of oceanic crust and upper mantle which are widespread on the surface of continents along tectonic suture zones (e.g., Abbate et al, 1985;Boronina et al, 2005;Maury and Balaji, 2014;Segadelli et al, 2017b;Vacquand et al, 2018;Jeanpert et al, 2019). These rocks extend from the Alps to the Himalayas through, for instance, Cyprus, Syria and Oman, and are also present in various countries such as Cuba, USA, Papua-New Guinea, New Caledonia and Newfoundland (Abbate et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

“…Ophiolites are important groundwater resources in some areas (e.g., within the northern Apennines (Segadelli et al, 2017b) and in Cyprus (Boronina et al, 2005)). In Oman, ophiolite water was a key resource for the population that started in 3000 BC.…”

Section: Introductionmentioning

confidence: 99%

Groundwater flow characterization of an ophiolitic hard-rock aquifer from cross-borehole multi-level hydraulic experiments

Lods

Roubinet

Matter

et al. 2020

Journal of Hydrology

View full text Add to dashboard Cite

Ophiolitic formations play a critical role in the groundwater resource of numerous countries and areas. Previous studies show that the structural heterogeneities of these rocks, coming from the presence of both different lithological units and multi-scale discontinuities, result in complex hydrogeological features that are not well characterized yet. In particular, there is a need for understanding how these heterogeneities impact the hydrodynamic properties of ophiolitic aquifers and the highly variable chemical composition of the water. To this end, we conduct various kinds of pumping experiments between two boreholes 15 m apart in the ophiolitic formation of the Batin (BA1) site in the wadi Tayin massif of the Sultanate of Oman. Cross-borehole open pumping experiments, as well as multi-level pumping and monitoring hydraulic tests, are performed in conductive zones that were identified from temperature and flowmeter data, but also in low-permeability zones requiring

show abstract

“…Because the vertical heterogeneity is discontinuous, it is unable to provide a continuous solution within the stratigraphic sequence over an extended area. Therefore, in contrast with other systems characterised by vertical heterogeneity, from the hydraulic point of view [64,[88][89][90], no perched aquifers overlie deeper ones, and a unique saturated zone can be assumed. Conceptual hydrogeological sketch of heterogeneous media characterised by evaporite-bearing successions.…”

Section: Hydrogeological Modelmentioning

confidence: 99%

Hydrogeological Behaviour and Geochemical Features of Waters in Evaporite-Bearing Low-Permeability Successions: A Case Study in Southern Sicily, Italy

et al. 2020

Self Cite

View full text Add to dashboard Cite

Knowledge about the hydrogeological behaviour of heterogeneous low-permeability media is an important tool when designing anthropogenic works (e.g., landfills) that could potentially have negative impacts on the environment and on people’s health. The knowledge about the biogeochemical processes in these media could prevent “false positives” when studying groundwater quality and possible contamination caused by anthropogenic activities. In this research, we firstly refined knowledge about the groundwater flow field at a representative site where the groundwater flows within an evaporite-bearing low-permeability succession. Hydraulic measurements and tritium analyses demonstrated the coexistence of relatively brief to very prolonged groundwater pathways. The groundwater is recharged by local precipitation, as demonstrated by stable isotopes investigations. However, relatively deep groundwater is clearly linked to very high tritium content rainwater precipitated during the 1950s and 1960s. The deuterium content of some groundwater samples showed unusual values, explained by the interactions between the groundwater and certain gases (H2S and CH4), the presences of which are linked to sulfate-reducing bacteria and methanogenic archaea detected within the saturated medium through biomolecular investigations in the shallow organic reach clayey deposits. In a wider, methodological context, the present study demonstrates that interdisciplinary approaches provide better knowledge about the behaviour of heterogeneous low-permeability media and the meaning of each data type.

show abstract

Hydrogeological mapping of heterogeneous and multi-layered ophiolitic aquifers (Mountain Prinzera, northern Apennines, Italy)

Cited by 13 publications

References 37 publications

Microorganisms as contaminants and natural tracers: a 10-year research in some carbonate aquifers (southern Italy)

Microorganisms as contaminants and natural tracers: a 10-year research in some carbonate aquifers (southern Italy)

Groundwater flow characterization of an ophiolitic hard-rock aquifer from cross-borehole multi-level hydraulic experiments

Hydrogeological Behaviour and Geochemical Features of Waters in Evaporite-Bearing Low-Permeability Successions: A Case Study in Southern Sicily, Italy

Contact Info

Product

Resources

About