Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6440459 | Lithos | 2016 | 58 Pages |
Abstract
The 454 ± 5 Ma U-Pb (zircon) age of the Cajú syenogranite overlaps previous geochronological data of 440 ± 11 Ma obtained on a pegmatite dyke at Ponta Negra, bracketing and extending the time interval for the Gondwana assembly collapse magmatism in the region. The heat that triggered this magmatic event could still be a consequence of the collisional orogeny, increasing contents of heat-producing elements, or, a large intraplate extension that followed the Gondwana amalgamation and initiated the formation of Paleozoic basins.
Related Topics
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Authors
Everton Marques Bongiolo, Christophe Renac, Patricia d'Almeida de Toledo Piza, Renata da Silva Schmitt, André Sampaio Mexias,