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The La Cocha – Rio Tellez Migmatitic Complex includes a set of metamorphic rocks, mainly migmatites, schists, gneisses and amphibolites, that lie in faulted contact with the Cuarzomonzonita de Sombrerillo Unit and cretaceous sedimentary rocks. The 163.6±4.7 Ma U-Pb age in zircon is assumed as the age of metamorphism of the La Cocha-Rio Tellez Migmatitic Complex, it was obtained in a quartz-feldspar schist that outcrops in the municipality of San Francisco-Putumayo; the ages of 194. 4±2. 0 Ma, 218.8 Ma and Ma 229.8 correspond to inherited ages. The Aleluya Complex encompasses marbles, meta-sandstones, quartzites, and migmatites. U-Pb ages in zircon obtained for two granofels samples collected on the Palermo-San Luis (Huila) road, are separated into three populations of data with ages: 169. 1±2. 7 Ma age of crystallization and inherited ages of 194. 6±3. 2 Ma, 212.5, 218.6 and 235.5 Ma.

boletín de ciencias de la tierra/boletín de ciencias de la tierra

Petrography, geochemistry and geochronology of metamorphic rocks outcropping in San Francisco Putumayo and the Palermo-San Luis road associated with the La Cocha - River Tellez and Aleluya complexes