Biotic and inorganic control on travertine deposition at Bullicame 3 spring (Viterbo, Italy): A multidisciplinary approach (Articolo in rivista)

Type
Label
  • Biotic and inorganic control on travertine deposition at Bullicame 3 spring (Viterbo, Italy): A multidisciplinary approach (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.gca.2011.05.011 (literal)
Alternative label
  • Di Benedetto F, Montegrossi G, Minissale A, Pardi L, Romanelli M, Tassi F, Huertas AD, Pampin EM, Vaselli O, Borrini D (2011)
    Biotic and inorganic control on travertine deposition at Bullicame 3 spring (Viterbo, Italy): A multidisciplinary approach
    in Geochimica et cosmochimica acta; Pergamon-Elsevier Science Ltd., Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Di Benedetto F, Montegrossi G, Minissale A, Pardi L, Romanelli M, Tassi F, Huertas AD, Pampin EM, Vaselli O, Borrini D (literal)
Pagina inizio
  • 4441 (literal)
Pagina fine
  • 4455 (literal)
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  • 75 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 14 (literal)
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  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dip. Chimica, Università di Firenze, Via della Lastruccia, 3, 50019 Sesto F.no, Italy Dip. Scienze della Terra, Università di Firenze, Via G. La Pira, 4, 50121 Firenze, Italy CNR-IGG Istituto di Geoscienze e Georisorse, Via G. La Pira, 4, 50121 Firenze, Italy CNR-IPCF Istituto per i Processi Chimico-Fisici, Via Moruzzi, 1, 56010 Pisa, Italy Estación Experimental del Zaidín (CSIC), Prof. Albareda, 118008 Granada, Spain Genetica (Produccion Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain (literal)
Titolo
  • Biotic and inorganic control on travertine deposition at Bullicame 3 spring (Viterbo, Italy): A multidisciplinary approach (literal)
Abstract
  • A multidisciplinary characterization of an active thermal spring in central Italy has been undertaken with the aim of (i) ascertaining whether microbiological activity plays a relevant role in hot-depositing travertines and (ii) establishing an experimental protocol able to identify similar effects in fossil travertines. Water, gas, and travertine samples were investigated by chemical (ICP/MS, SEM/EDS), physical (DTA-DTG), isotopic (?18O, ?D, and ?13C), mineralogical (XRPD), and spectroscopic (EPR) techniques. Twenty-four samples (three for each phase) were collected every 5 °C temperature drop, along a ~100 m long artificial channel near Viterbo (Bullicame 3, Latium, central Italy). A microbiological characterization was carried out in parallel, sampling the channel every 10 °C temperature drop. The Bullicame 3 system is revealed to be composed of two markedly different subsystems: a water/gas interface, where a kinetically fast exchange allows equilibrium of components both in water and in gases; a solid/water interface, where travertine precipitation occurs, influenced by microbiological activity. A peculiar lattice shrinking of calcite was identified, as well as an anomalous value of the zero-field splitting parameter from the EPR measurements. The interpretation of these anomalies is confirmed by the identification of calcifying cyanobacteria throughout the channel path. Our results point out that microbiological activity can play a significant role in travertine deposition from hot springs. Furthermore, the proposed approach, representing a tool to identify crystal chemical remnants of past microbiological activity, could be applicable to fossil travertines. (literal)
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