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Article
Very low-temperature metamorphism in Ordovician metasedimentary rocks above and below the Sardic unconformity, SW Sardinia, Italy
In the Iglesiente region, the Cabitza and Monte Argentu Formations are separated by an angular unconformity known as the Sardic unconformity. This is related to an early Ordovician mild compressional phase, kn...
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Article
Metabasites with eclogite facies relics from Variscides in Sardinia, Italy: a review
Metabasites with eclogite facies relics occur in northern Sardinia as massive to strongly foliated lenses or boudins embedded within low- to medium-grade rocks (Anglona) and migmatites (NE Sardinia). U–Pb zirc...
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Article
Mineralogy and geochemistry of Late Ordovician phosphate-bearing oolitic ironstones from NW Sardinia, Italy
¶In the Nurra region, NW Sardinia, oolitic ironstones are interlayered within coarsening upward metasedimentary sequences of siltstone, sandstone, breccia, and conglomerate. A Caradoc-Early Ashgill age is sugg...
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Article
Rb-Sr and K-Ar ages on minerals at temperatures of 300°–400° C from deep wells in the Larderello geothermal field (Italy)
Rb-Sr and K-Ar ages have been obtained on six biotites, two muscovites and one hornblende from samples of micaschist, gneiss and amphibolite of Lower Paleozoic to Precambrian age at a depth exceeding 2,000 m i...
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Chapter and Conference Paper
Deep Exploration in Larderello Field: Sasso 22 Drilling Venture
Sasso 22 well was programmed in the Larderello field (Italy)with the objective of verifying whether geothermal fluids could be recovered from the deep horizons underlying those producing at present; other obje...
