Thermal evolution of the eastern Serranía del Interior foreland fold and thrust belt, northeastern Venezuela, based on apatite fission-track analyses
Published:January 01, 2005
Brian D. Locke, John I. Garver, 2005. "Thermal evolution of the eastern Serranía del Interior foreland fold and thrust belt, northeastern Venezuela, based on apatite fission-track analyses", Caribbean-South American plate interactions, Venezuela, Hans G. Avé Lallemant, Virginia B. Sisson
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The eastern Serranía del Interior foreland thrust belt in Venezuela consists of south-vergent thrusts that juxtapose Cretaceous and Paleogene passive margin units with less deformed Neogene basin strata. Apatite fission-track (AFT) ages, mainly from Cretaceous strata, are reset with distinct populations of grain ages that define two different cooling paths (CP). A number of samples have two reset ages that are apparently defined by apatite of different track retentiveness and they therefore record slightly different cooling events. CP1 has significant scatter, but populations of grain ages range from ca. 35–18 Ma, and peak ages decrease from north to south. Previous...