Journal article
Early Cretaceous basaltic and rhyolitic magmatism in southern Uruguay associated with the opening of the South Atlantic
Journal of petrology, Vol.41(9), pp.1413-1438
2000
DOI: 10.1093/petrology/41.9.1413
Abstract
The Early Cretaceous volcanic rocks of southern Uruguay comprise mafic and felsic volcanics. The position of these outcrops at the southern edge of the Paraná–Etendeka continental flood basalt province provides an opportunity to investigate possible lateral variations in both mafic and more evolved rock types towards the margins of such an area of plume-related magmatism. The mafic lavas are divided into two compositionally distinct magma types. The more voluminous Treinte Y Trés magma type is similar to the low-Ti basalts of the Paraná flood basalt province. The Santa Lucía magma type is a distinct and rare basalt type with ocean-island basalt type asthenospheric affinities (high Nb/La, low
Details
- Title: Subtitle
- Early Cretaceous basaltic and rhyolitic magmatism in southern Uruguay associated with the opening of the South Atlantic
- Creators
- Linda A KirsteinDavid W PeateChris J HawkesworthSimon P TurnerChris HarrisMarta S.M Mantovani
- Resource Type
- Journal article
- Publication Details
- Journal of petrology, Vol.41(9), pp.1413-1438
- DOI
- 10.1093/petrology/41.9.1413
- ISSN
- 0022-3530
- eISSN
- 1460-2415
- Language
- English
- Date published
- 2000
- Academic Unit
- Earth and Environmental Sciences; Honors Program
- Record Identifier
- 9983984528002771
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