Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5835| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Voltattorni, N.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
| dc.contributor.authorall | Lombardi, S.; University of Rome "La Sapienza" | en |
| dc.contributor.authorall | Rizzo, S.; University of Rome "La Sapienza" | en |
| dc.date.accessioned | 2010-01-22T18:35:40Z | en |
| dc.date.available | 2010-01-22T18:35:40Z | en |
| dc.date.issued | 2009 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/5835 | en |
| dc.description.abstract | The physical properties of clay allow to consider argillaceous formations as geological barriers to radionuclide migration in high-level radioactive-waste isolation systems. As laboratory simulations are short term and numerical models always involve assumptions and simplifications of the natural system, natural analogues are extremely attractive surrogates for the study of long-term isolation. The thermally altered clays of the Orciatico area (Tuscany, Central Italy) represent an interesting natural model of a heat source which acted on argillaceous materials. The study of this natural analogue was performed through detailed geoelectrical and soil-gas surveys in order to define both the geometry of the intrusive body and the gas permeability of a clay unit characterized by different thermal alteration degrees. In particular, soil-gas radon and carbon dioxide distributions highlighted that the clay sequences, in spite of their thickness and plasticity, if fractured and metamorphosed, form a lesser impermeable barrier for naturally migrating gas. | en |
| dc.language.iso | English | en |
| dc.relation.ispartof | Applied Geochemistry | en |
| dc.subject | gas migration | en |
| dc.subject | gas permeability | en |
| dc.title | Soil-gas geochemistry as permeability tracer of thermally altered clays at Orciatico (Tuscany, Central Italy) | en |
| dc.type | manuscript | en |
| dc.description.status | Submitted | en |
| dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.01. Geochemical exploration | en |
| dc.relation.references | Barberi, F. and F. Innocenti (1967), Le rocce selagitiche di Orciatico e di Montecatini in Val di Cecina. Atti Soc. Toscana Sci. Nat. Mem. Ser A, 74, 139-180. Borsi, S., G. Ferrara and E. Tongiorgi (1967), Determinazioni con il metodo K/Ar delle età delle rocce magmatiche della Toscana. Boll. Soc. Geol. It., 86, 403-410. Ciotoli, G., S. Lombardi, S. Serafini and F. Zarlenga (1997), The refinement of geomorphological and geochemical statistical techniques in the study of clay-basin tectonics:the Era Basin (Central Italy). Italian Journal of Quaternary Sciences, 10 (2), 231-246. Conticelli, S., P. Manetti and S. Menichetti (1992), Mineralogy, geochemistry and Sr-isotopes in orendites from South Tuscany, Italy: constraints on their genesis and evolution. Eur. J. Mineral., 4, 1359-1375. Durrance, M. and R. G. Gregory (1987), Helium, radon, and hydrothermal circulation associated with the Carnmenellis radiothermal granite of Southwest England. Journal of Geophysical Research, 92, (B12), 12,567-12,586. Ferrara, G., L. Leoni, F. Sartori and S. Tonarini (1988), Sr content and Sr isotopic composition in contact metamorphosed argillaceous sediments (Orciatico, Tuscany, Central Italy): relation to fluid circulation. Rend. Soc. Min. Petrol., 40, 111-124. Gregory, R. G. and E. M. Durrance (1985), Helium, carbon dioxide and oxygen soil gases: small-scale varations over fractured ground. J. Geochem. Expl., 24 (1), 29-49. Hinkle, M. E. and J. L. Ryder (1994), Effect of moisture and carbon dioxide on concentrations of helium in soils and soil gases. J. Geophys. Res., 92 (B12), 12587-12594. Hueckel, T. and R. Pellegrini (2002), Reactive plasticity for clays: application to a natural analog of long-term geomechanical effects of nuclear waste disposal. Engineering Geology, 64, 195-215. Leoni, L., C. Polizzano, F. Sartori and L. Sensi (1984), Chemical and mineralogical transformation induced in Pliocene clays by a small subvolcanic body and consequence for the storage of radioactive wastes. N. Jb. Mineral. Mh., 155-168. Morse, R. H. (1976), The applied geochemistry of radon and related elements. Geological Association of Canada; Mineralogical Association of Canada; Canadian Geophysical Union, Joint Annual Meeting, 1, 44 pp. Polizzano, C., L. Leoni, F. Sartori and L. Sensi (1984), Effetti del riscaldamento naturale sulle formazioni argillose – studi sugli effetti termometamorfici dell’intrusione di Orciatico. ENEA Rapporto finale dei contratti 152-80-7 e 354-83-7 WASI, parte A. Rodolico, F. (1934), Ricerche sulle rocce eruttive recenti della Toscana, II. Le rocce di Orciatico e di Montecatini in Val di Cecina. Atti Soc. Toscana Sci. Nat. Mem., 44, 177-202. Sinclair, A. J. (1974), Selection of threshold values in geochemical data using probability graphs. J. Geochem. Explor., 3, 129-149. Smith, A. Y., Barretto, P. M. C., S. Pournis (1976), Radon methods in uranium exploration. Proceedings Series - International Atomic Energy Agency = Collection Comptes Rendus - Agence Internationale de l'Energie Atomique,434, 185-211. Stefanini, G. (1934), Il complesso eruttivo di Orciatico e Montecatini, provincia di Pisa. Atti Soc. Toscana Sci. Nat. Mem. (A), 44, 224-300. | en |
| dc.description.obiettivoSpecifico | 4.5. Studi sul degassamento naturale e sui gas petroliferi | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | open | en |
| dc.contributor.author | Voltattorni, N. | en |
| dc.contributor.author | Lombardi, S. | en |
| dc.contributor.author | Rizzo, S. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia | en |
| dc.contributor.department | University of Rome "La Sapienza" | en |
| dc.contributor.department | University of Rome "La Sapienza" | en |
| item.openairetype | manuscript | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | open | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia | - |
| crisitem.author.dept | Università La Sapienza | - |
| crisitem.author.dept | Dipartimento di Ingegneria Nucleare, Università di Palermo, Viale delle Scienze, Edificio 6, 90128 Palermo, Italy | - |
| crisitem.author.orcid | 0000-0002-3940-8383 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Manuscripts | |
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