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We established provenance of Cenozoic sequences sampled in wells in the southern and southwestern Gulf of Mexico by heavy mineral analysis and LAICPMS detrital zircon U-Pb ages. The age spectra are dominated by Cenozoic ages. Other populations are of Cretaceous, Late Permian-Early Triassic, and Neo-Mesoproterozoic ages. Minor Jurassic, Devonian, and Ordovician ages are included.

Paleoproterozoic-Archean ages are related to the Amazonian craton. Meso-Neoproterozoic ages (1 Ga) are ubiquitous in Mexico (Oaxaquia terrane) and are related to the Grenville orogen. Neoproterozoic ages (750-550 Ma) were possibly derived from sedimentary rocks on the Panafrican orogen. Cambrian-Ordovician ages (490-450 Ma) might relate...

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