@prefix pubblicazioni: . @prefix unitaDiPersonaleInterno: . @prefix prodotto: . unitaDiPersonaleInterno:MATRICOLA39089 pubblicazioni:autoreCNRDi prodotto:ID223915 . @prefix prodottidellaricerca: . @prefix istituto: . istituto:CDS043 prodottidellaricerca:prodotto prodotto:ID223915 . unitaDiPersonaleInterno:MATRICOLA13346 pubblicazioni:autoreCNRDi prodotto:ID223915 . @prefix rdf: . @prefix retescientifica: . prodotto:ID223915 rdf:type retescientifica:ProdottoDellaRicerca , prodotto:TIPO1101 . @prefix rdfs: . prodotto:ID223915 rdfs:label "Fluid geochemical transect in the Northern Apennines (central-northern Italy): fluid genesis and migration and tectonic implications (Articolo in rivista)"@en . @prefix xsd: . prodotto:ID223915 pubblicazioni:anno "2000-01-01T00:00:00+01:00"^^xsd:gYear ; pubblicazioni:doi "10.1016/S0040-1951(00)00031-7"^^xsd:string . @prefix skos: . prodotto:ID223915 skos:altLabel "
A Minissale, G Magro, G Martinelli, O Vaselli, GF Tassi (2000)
Fluid geochemical transect in the Northern Apennines (central-northern Italy): fluid genesis and migration and tectonic implications
in Tectonophysics (Amst. Online)
"^^rdf:HTML ; pubblicazioni:autori "A Minissale, G Magro, G Martinelli, O Vaselli, GF Tassi"^^xsd:string ; pubblicazioni:paginaInizio "199"^^xsd:string ; pubblicazioni:paginaFine "222"^^xsd:string ; pubblicazioni:url "http://scienceserver.cilea.it/cgi-bin/sciserv.pl?collection=journals&journal=00401951"^^xsd:string ; pubblicazioni:numeroVolume "319"^^xsd:string . @prefix ns10: . prodotto:ID223915 pubblicazioni:rivista ns10:ID599273 ; pubblicazioni:numeroFascicolo "3"^^xsd:string ; skos:note "PuMa"^^xsd:string , "ISI Web of Science (WOS)"^^xsd:string , "Scopu"^^xsd:string , "Google Scholar"^^xsd:string ; pubblicazioni:affiliazioni "a CNR-Study Center for Minerogenesis and Applied Geochemistry, Via G. La Pira 4, 50121 Florence, Italy\n b CNR-Institute for Geochronology and Isotope Geochemistry, Via C. Maffi 36, 56100 Pisa, Italy\n c Emilia-Romagna Region, Cartography and Geology Office, V. le A. Silvani 4/3, 40122 Bologna, Italy\n d Department of Earth Science, University of Florence, Via G. La Pira 4, 50121 Florence, Italy"^^xsd:string ; pubblicazioni:titolo "Fluid geochemical transect in the Northern Apennines (central-northern Italy): fluid genesis and migration and tectonic implications"^^xsd:string ; prodottidellaricerca:abstract "Chemical and isotopic characteristics of natural gas and thermal water discharges from the western back-arc Tyrrhenian Sea across the Apennine thrust-belt to the Po Valley and Adriatic coast foredeep basins in the Northern Apennines (central-northern Italy) reveal a large-scale fluid motion in the upper crust, both vertically and horizontally. On the basis of gas compositions, two different domains of rising fluids have been distinguished: (1) CO2-rich, He-poor, 3He/4He-high domain in the western peri-Tyrrhenian extensional sector; (2) CH4-rich, He-rich, 3He/4He-low domain in the eastern Adriatic compressional sector. Such gases, rising from various depths, are crossed by a huge lateral N2-rich water flow, in the peri-Tyrrhenian sector, of Ca-SO4(HCO3) meteoric-derived waters that move in a regional wide aquifer hosted in a quite thick Mesozoic carbonate series. Morphologically, the CO2 vents consist of mud basins with high gas-rate emission, where the rising fluids move upwards through diatremes. On the other hand, CH4 emissions seep out from typical mud volcanoes with a reduced gas flow-rate, where the fluid motion is likely related to saline diapir extrusions, and the methane is mostly carried to the surface by the associated mud. The two rising mechanisms described locate southwest and northeast of the Apennine watershed respectively. From a seismic point of view the CH4 domain in the thrust-belt and foredeep areas is characterized by a large number of earthquakes, indirectly pointing to a different rheological behavior of the terrains with respect to the more internal peri-Tyrrhenian area. Owing to the quite high thermal gradient of the latter, the boundary of the brittle-ductile crust in the peri-Tyrrhenian sector can be located at a 10km shallow depth. Although the presence of several post-orogenic basins would suggest widespread extensional tectonics in all areas west of the Apennine watershed, those located in the easternmost part display gas vents with typical crustal 3He/4He ratios. As this ratio is very sensitive to deep fluids rising from the mantle, we hypothesize that such basins at the foot of the Apennines are not due to tensive stress, as suggested by their morphological shape. They are piggy-back (thrust-top) basins developed and evolved in a still acting compressive tectonic regime" ; prodottidellaricerca:prodottoDi istituto:CDS043 ; pubblicazioni:autoreCNR unitaDiPersonaleInterno:MATRICOLA39089 , unitaDiPersonaleInterno:MATRICOLA13346 . ns10:ID599273 pubblicazioni:rivistaDi prodotto:ID223915 .