Abstract
The Pogallo Line is a major crustal shear zone in the crystalline S Alps of N Italy which separates middle amphibolite-granulite facies rocks of the Ivrea zone from lower-middle amphibolite facies rocks of the Strona-Ceneri zone. U-Pb, Rb-Sr, and K-Ar whole-rock and mineral ages for samples from this region indicate that the two zones pursued different time-temperature paths after Caledonian peak metamorphism. We suggest that the Pogallo Line may represent a low-angle normal fault that developed at intermediate crustal levels during a Late Triassic-Early Jurassic extension and attained its present subvertical orientation during Alpine deformation.-after Authors
Original language | English (US) |
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Pages (from-to) | 151-155 |
Number of pages | 5 |
Journal | Geology |
Volume | 12 |
Issue number | 3 |
DOIs | |
State | Published - Jan 1 1984 |
Externally published | Yes |
ASJC Scopus subject areas
- Geology