Detailed structural and sedimentological studies have been conducted in 2 areas near the Val Vedello uranium mine in N Italy. These studies indicate that both the Variscan basement and the Permian cover rocks were thrust S during the Alpine orogeny. Variscan mylonitic zones were rejuvenated during the Alpine orogeny and became fault boundaries for the Permo-Triassic basins. Alpine faults also are related to contemporaneous E-W folds and these faults have displaced Permo-Triassic uranium deposits. Uranium mineralisation is attributed to a Late Permian to Triassic geothermal event which leached uranium from Permian ignimbrites and transported it along Permo-Triassic faults. Detailed mapping indicates that the host sediments formed in an arid, closed basin characterised by alluvial fans and perennial saline lakes.-from Authors

Report on a structural and sedimentological analysis in the Uranium province of the Orobic Alps, Italy / G. CASSINIS, G.V. DAL PIAZ, A. EUSEBIO, G. GOSSO, G. MARTINOTTI, F. MASSARI, P.F. MILANO, G. PENNACCHIONI, M. PERELLO, C.M. PESSINA, E. ROMAN, M.I. SPALLA, M. ZERBATO. - In: URANIUM. - ISSN 0167-5583. - 2:3(1986), pp. 241-260.

Report on a structural and sedimentological analysis in the Uranium province of the Orobic Alps, Italy

G. GOSSO;M.I. SPALLA
Penultimo
;
1986

Abstract

Detailed structural and sedimentological studies have been conducted in 2 areas near the Val Vedello uranium mine in N Italy. These studies indicate that both the Variscan basement and the Permian cover rocks were thrust S during the Alpine orogeny. Variscan mylonitic zones were rejuvenated during the Alpine orogeny and became fault boundaries for the Permo-Triassic basins. Alpine faults also are related to contemporaneous E-W folds and these faults have displaced Permo-Triassic uranium deposits. Uranium mineralisation is attributed to a Late Permian to Triassic geothermal event which leached uranium from Permian ignimbrites and transported it along Permo-Triassic faults. Detailed mapping indicates that the host sediments formed in an arid, closed basin characterised by alluvial fans and perennial saline lakes.-from Authors
Settore GEO/03 - Geologia Strutturale
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/200595
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