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Fabrics of pre- and syntectonic granite plutons and chronology of shear zones in the Eastern Borborema Province, NE Brazil

Archanjo, Carlos J; de Hollanda, Maria H.B.M.; Rodrigues, Sérgio W.O.; Neves, Benjamin B.B.; Armstrong, Richard


We used the fabrics of two granite plutons and U/Pb (SHRIMP) zircon ages to constrain the tectonic evolution of the E-trending Patos shear zone (Borborema Province, NE Brazil). The pre-tectonic Teixeira batholith consists of an amphibole leucogranite locally with aegirine-augite. Zircons from a syenogranite yielded crystallization ages of 591 ± 5 Ma. The batholith fabrics were determined by anisotropy of magnetic susceptibility (AMS) and mineral shape preferred orientation. The fabrics support...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Journal of Structural Geology
DOI: 10.1016/j.jsg.2007.11.011


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