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| Content Provider | Springer Nature Link |
|---|---|
| Author | Chiocchini, Ugo Castaldi, Fabio Barbieri, Maurizio Eulilli, Valeria |
| Copyright Year | 2010 |
| Abstract | The stratigraphic and structural setting of the Cimini Mountains and Viterbo area of Italy has been reconstructed. The architecture of the tectonic edifice, below the Pleistocene Cimino and Vicano volcanic districts cover, is characterized by the Mesozoic–Cenozoic Tuscan Nappe and the similar Umbria-Marche Succession; both are capped by the overthrusted Ligurian Late Cretaceous–Eocene Tolfa Flysch. A shallow unconfined volcanic aquifer is separated, by a thick aquiclude, from the deep confined carbonate aquifer consisting of the Tuscan Nappe and the Umbria-Marche Succession. The volcanic aquifer hosts cold waters, whilst the carbonate aquifer hosts hot sulphate–alkaline earth waters that emerge in the thermal area of Viterbo with a temperature of 30–60°C. The recharge area of cold waters is located in the Cimini Mountains. Thermal waters of the Viterbo hot springs are derived from a circuit of waters that emerge along the River Nera near Narni (about 34 km ENE of Viterbo), with a high salinity, a temperature of 16–18°C, a sulphate–alkaline earth composition, and a discharge of 13 m$^{3}$/sec, whose recharge area is located in the central pre-Apennines reliefs.Le contexte stratigraphique et structural des Monts Cimini et du secteur de Viterbo en Italie a été reconstitué. Sous la couverture pléistocène des provinces volcaniques de Cimino et Vicano, l’architecture de l’édifice tectonique est caractérisée par la Nappe de Toscane Méso-Cénozoïque et la Succession d’Ombrie-Marches, toutes deux surmontées par les flysch liguriens chevauchants de La Tolfa, datés de la fin du Crétacé et de l’Eocène. Un aquifère libre peu profond est séparé par un aquiclude puissant de l’aquifère carbonaté profond et captif de la Nappe de Toscane et de la Succession d’Ombrie-Marches. L’aquifère volcanique renferme des eaux froides, tandis que l’aquifère carbonaté contient des eaux chaudes sulfatées calciques et magnésiennes, qui émergent dans l’aire thermale de Viterbo à une température comprise entre 30 et 60°C. L’aire d’alimentation des eaux froides se situe sur les Monts Cimini. Les eaux thermales des sources chaudes de Viterbo sont issues d’un circuit qui émerge le long de la rivière Nera, non loin de Narni (34 km environ à l’ENE de Viterbo), avec une salinité élevée, une température de 16 à 18°C et un faciès sulfaté calcique et magnésien, à un débit de 13 m$^{3}$/s; l’aire d’alimentation se situe sur les reliefs pré-apennins centraux.Se ha reconstruido el marco estratigráfico y estructural de las montañas Cimini y del área de Viterbo en Italia. La arquitectura del edificio tectónico, por debajo de la cubierta volcánica de los distritos Pleistocenos de Cimino y Vicano, está caracterizada por el manto de Toscana Mesozoico–Cenozoico y la similar sucesión de Umbria-Marche, ambas cubiertas por el sobrecorrimiento del flysch Tolfa cretácico eoceno de Liguria. Un acuífero volcánico no confinado somero está separado, por un espeso acuicludo, del acuífero confinado carbonático profundo compuesto por el manto Toscano y la sucesión Umbria-Marche. El acuífero volcánico aloja aguas frías, mientras que el acuífero carbonático aloja aguas calientes sulfatadas–alcalinas térreas que emergen en el área termal de Viterbo con una temperatura de 30–60°C. El área de recarga de las aguas frías está localizada en las montañas Cimini. Las aguas termales de los manantiales calientes de Viterbo son derivadas de un circuito de aguas que emerge a lo largo del Río Nera cerca de Narni (alrededor de 34 km al ENE de Viterbo), con una salinidad alta, una temperatura de 16–18°C, una composición sulfato–alcalino térrea, y una descarga de 13 m$^{3}$/sec, cuya área de recarga está ubicada en los relieve centrales pre-Apeninos.È stato ricostruito l’assetto stratigrafico e strutturale dell’area Monti Cimini-Viterbo in Italia centrale. L’architettura dell’edificio tettonico, al di sotto della copertura costituita dalle formazioni dei distretti vulcanici Cimino e Vicano del Pleistocene, è caratterizzato dalla Falda Toscana e dalla simile Successione Umbro-Marchigiana del Mesozoico–Cenozoico, sulle quali è sovrascorso il Flysch della Tolfa (unità liguride) del Cretacico superiore–Eocene. L’acquifero vulcanico superficiale non confinato è separato, tramite uno spesso acquiclude, dall’acquifero carbonatico confinato profondo, costituito dalla Falda Toscana e dalla Successione Umbro-Marchigiana. L’acquifero vulcanico ospita acque fredde, mentre l’acquifero carbonatico contiene acque termali solfato–alcalino terrose calde che emergono nell’area a W di Viterbo con temperature di 30–60°C. L’area di ricarica delle acque fredde è localizzata nei Monti Cimini, mentre le acque termali delle sorgenti calde di Viterbo derivano da un circuito di acque sotterranee che emergono lungo il Fiume Nera vicino Narni (circa 34 km ENE da Viterbo), con elevata salinità, temperatura di 16–18°C, composizione solfato–alcalino terrosa e portata di 13 m$^{3}$/sec, la cui area di ricarica è localizzata nei rilievi del pre–Appennino centrale.Foi reconstruído o ambiente estratigráfico e estrutural das Montanhas Cimini e da área de Viterbo na Itália. A arquitectura do edifício tectónico, coberto pelos distritos vulcânicos Plistocénicos de Cimino e Vicano, caracteriza-se pelo Manto Meso-Cenozóico de Toscana e pela Sequência similar de Úmbria-Marche, de características semelhantes; ambos se encontram cobertas pelo Flysch Liguriano de Tolfa, do Cretácico Superior-Eocénico, cavalgante sobre o conjunto. Um aquífero vulcânico sub-superficial, livre, é separado, por um aquicludo de elevada espessura, do aquífero carbonatado profundo, confinado, constituído pela Manto de Toscana e pela Sequência de Úmbria-Marche. O aquífero vulcânico contém águas frias, enquanto o aquífero carbonatado possui águas quentes sulfatadas-alcalino-terrosas, as quais emergem na zona termal de Viterbo, com uma temperatura de 30–60°C. A área de recarga das águas frias localiza-se nas Montanhas Cimini. As águas das nascentes termais de Viterbo, que derivam da circulação de águas que emergem ao longo do Rio Nera, perto de Narni (cerca de 34 km a ENE de Viterbo), apresentam uma salinidade elevada, uma temperatura de 16–18°C, uma composição sulfatada-alcalino-terrosa e um caudal de descarga de 13 m$^{3}$/sec. A sua área de recarga localiza-se no centro dos relevos pré-Apeninos. |
| Starting Page | 1319 |
| Ending Page | 1341 |
| Page Count | 23 |
| File Format | |
| ISSN | 14312174 |
| Journal | Hydrogeology Journal |
| Volume Number | 18 |
| Issue Number | 6 |
| e-ISSN | 14350157 |
| Language | Portuguese |
| Publisher | Springer-Verlag |
| Publisher Date | 2010-04-11 |
| Publisher Institution | International Association of Hydrogeologists |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Thermal conditions Carbonate rocks Recharge area Cimini Mountains Italy Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Geology Hydrogeology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Earth and Planetary Sciences Water Science and Technology |
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