Late Jurassic bimodal magmatism in the northern sea-floor remnant of the Rocas Verdes basin, southern Patagonian Andes
Magmatic and detrital zircon ages from the Rocas Verdes basin, a tectonically juxtaposed remnant of sea floor in the Magallanes fold and thrust belt (southern Patagonia, South America), indicates that a rifting phase of the Rocas Verdes basin occurred between 152 and 142 Ma, and was accompanied by bimodal magmatism. A dacite dyke cross-cutting pillow-basalt successions and a plagiogranite dyke in mixed maficfelsic terranes of the basal Sarmiento Ophiolite Complex contain 150 Ma zircon crystals,...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of the Geological Society|
|01_Calderon_Late_Jurassic_bimodal_2007.pdf||1.04 MB||Adobe PDF||Request a copy|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.