Groundwater hydrochemistry of the volcanic aquifers of Limnos Island, Greece

Groundwater Chemistry Characterization in the South and Southeast Merapi Volcano, Indonesia

“…Different TDI analysis results comprising seawater on the Limnos Island volcanic aquifers Greece TDI were found in the freshwater mix with SO 4 and HCO 3 (Panagopoulos et al, 2013). The same results were also obtained in the volcanic island of Roccamonfona Volcano, Italy (Saroli et al, 2017), Ethiopian rift aquifers (Kebede et al, 2008), central Mexico (Afsin et al, 2014 and Portugal (Prada et al, 2005) with a linear TDI pattern with all parameters.…”

Mineralogical, stable isotope, and fluid inclusion studies of spatially related porphyry Cu and epithermal Au-Te mineralization, Fakos Peninsula, Limnos Island, Greece

“…The lower value measured in barite from Fakos may have arisen from late-stage mixing between magmatic ore fluids and Miocene seawater, as suggested for the Pueblo Viejo highsulfidation epithermal deposit (Vennemann et al 1993) and modern incursion of seawater into aquifers on Aegean Islands has been reported by Lambrakis and Kallergis (2005) and Panagopoulis et al (2011).…”

“…Although the process of vapor contraction may partially or fully account for the presence of hydrothermal fluids of disparate chemistries in porphyry-epithermal systems, we favor a scenario in which meteoric water mixed with magmatic fluids. Evidence for the past and present incursion of meteoric water into the bedrock on Limnos Island include the presence of active hot spring and low-temperature (<100°C) hydrothermal alteration zones (e.g., smectite and halloysite; Papoulis and Tsolis-Katagas 2008), as well as the chemical and isotopic signature of thermal spring water and well water from several Aegean islands, including Limnos, that demonstrate the mixing of marine and meteoric water in a deep thermal setting (Lambrakis and Kallergis 2005;Panagopoulis et al 2011).…”

Research of the cenophytic palaeoflora of the Eastern Mediterranean (Lesbos, Lemnos, Alonissos, Gavdos Islands)

“…Several ignimbrite horizons are interbedded with flow tuffs which interfinger with five chert beds containing plant fossils which are overlain over these deposits. Romanou unit includes Therma subunit consisting of interbedded marl and volcanic tuff with early Miocene plant fossils in tectonic contact with the apparently overlying Myrina unit (Panagopoulos et al 2011). The same age for Therma was also suggested by Papp (1953) on the basis of fossil plants.…”