Papers by Tiziano Boschetti
Journal of Geochemical Exploration, Jan 31, 2024
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Geothermics, Mar 1, 2023
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Geothermics, Nov 1, 2022
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Rapid Communications in Mass Spectrometry, Feb 15, 2009
The purpose of this study was to investigate the possibility of identifying oil source areas by m... more The purpose of this study was to investigate the possibility of identifying oil source areas by means of simple measurements on the natural samples avoiding time-consuming sample treatments. The oxygen and carbon isotopic values of 150 samples of extra-virgin olive oil from eight different Italian regions and from three different years of production were measured according to well-established techniques. Statistical treatments of the results obtained show a very good correlation of the delta(18)O of oil with latitude, mean annual temperature, and mean relative humidity at the collection site. No correlation is found with elevation and mean annual precipitation. The shift of the oil delta(18)O per degree centigrade of the mean annual temperature is quantitatively close to that calculated for atmospheric precipitation in continental areas. Accordingly, in our measurements, the year of oil production can be identified on the basis of the delta(18)O value (mean 2004 temperatures were higher than 2005 temperatures). On the contrary, the oil delta(13)C values show no correlation with the above variables but only with latitude and, consequently, are less suitable for discriminating the geographic origin of oil. However, the delta(13)C values are suitable to indicate biological differentiation while the delta(18)O values are not.
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Social Science Research Network, 2022
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Hydrological Processes, Dec 23, 2016
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Applied Geochemistry, Jun 1, 2008
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Geologica Acta, Jul 14, 2011
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Water, Nov 21, 2018
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Lithos, Feb 1, 2020
Abstract The Cabezo Negro de Tallante volcano (SE Spain) is well known in literature for the pres... more Abstract The Cabezo Negro de Tallante volcano (SE Spain) is well known in literature for the presence of abundant mantle and crustal xenoliths in basaltic lithologies. Here we report field, petrographic, mineralogical and geochemical data of a poorly investigated pyroclastic deposit (breccia) and provide evidence for the presence of a primary magmatic carbonatite component. The matrix of the pyroclastic breccia contains carbonate and silicate portions. The carbonate portion is made up of calcitic ash with micro-lapilli of fine-grained carbonate, while globules and clasts of basaltic composition represent the silicate portion. A liquid immiscibility relationship between the carbonate and silicate portions is indicated by the presence of sharp, curved menisci between them, the presence of carbonate globules in silicate glass (and vice-versa) and the overall appearance as emulsion texture with bulging and pinch-off shapes. Carbonate globules in fresh silicate glass are also present as inclusions within xenolith crystals and bimodal carbonate mineralogy, consisting of either calcite (plus Mg-calcite) and dolomite, was observed in quenched liquids within mantle xenoliths. The whole-rock composition of the carbonate portion is within the compositional range of the carbonatitic rocks, but shows low concentrations of Sr, Ba, Nb, P and LREE if compared with typical carbonatite magmas. REE profiles of the carbonate portion are parallel to the patterns of associated alkaline basalts and fall in the range of both intraplate and convergent margin carbonatites. The carbonate portion shows high δ18O compared to primary igneous carbonates, a feature common to many extrusive carbonatites and plots slightly towards higher 87Sr/86Sr for a given 143Nd/144Nd in the Nd-Sr isotopic trend described by the associated rocks (alkaline basalts and mantle xenoliths) suggesting a contribution from crustal subducted material. These results support a magmatic origin for the carbonate portion and a contemporaneous eruption of carbonatic and silicatic magmas. The CO2 produced by the transformation of dolomitic melt into Mg-calcitic melt was the principal propellant in the high-energy explosive eruption at the Cabezo Negro de Tallante volcano.
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Procedia Earth and Planetary Science, 2013
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Marine and Petroleum Geology, Dec 1, 2020
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Aquatic Geochemistry, Jun 23, 2013
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Geoscience frontiers, Nov 1, 2020
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Geothermics, Feb 1, 2001
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Environmental Geochemistry and Health, Nov 18, 2021
Knowing water quality at larger scales and related ground and surface water interactions impacted... more Knowing water quality at larger scales and related ground and surface water interactions impacted by land use and climate is essential to our future protection and restoration investments. Population growth has driven humankind into the Anthropocene where continuous water quality degradation is a global phenomenon as shown by extensive recalcitrant chemical contamination, increased eutrophication, hazardous algal blooms, and faecal contamination connected with microbial hazards antibiotic resistance. In this framework, climate change and related extreme events indeed exacerbate the negative trend in water quality. Notwithstanding the increasing concern in climate change and water security, research linking climate change and groundwater quality remain early. Additional research is required to improve our knowledge of climate and groundwater interactions and integrated groundwater management. Long-term monitoring of groundwater, surface water, vegetation, and land-use patterns must be supported and fortified to quantify baseline properties. Concerning the ways climate change affects water quality, limited literature data are available. This study investigates the link between climate change and groundwater quality aquifers by examining case studies of regional carbonate aquifers located in Central Italy. This study also highlights the need for strategic groundwater management policy and planning to decrease groundwater quality due to aquifer resource shortages and climate change factors. In this scenario, the role of the Society of Environmental Geochemistry is to work together within and across geochemical environments linked with the health of plants, animals, and humans to respond to multiple challenges and opportunities made by global warming.
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Chemical Geology, Nov 1, 2008
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International Journal of Speleology, 2014
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Journal of Geochemical Exploration, Nov 1, 2015
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Papers by Tiziano Boschetti