Stratigraphy and chronology of Upper Cretaceous–lower Paleogene strata in Bolivia and northwest Argentina

@article{Sempr1997StratigraphyAC,
  title={Stratigraphy and chronology of Upper Cretaceous–lower Paleogene strata in Bolivia and northwest Argentina},
  author={T. Semp{\'e}r{\'e} and R. Butler and D. Richards and L. Marshall and W. Sharp and C. Swisher},
  journal={Geological Society of America Bulletin},
  year={1997},
  volume={109},
  pages={709-727}
}
Integration of sequence stratigraphy, magnetostratigraphy, Ar/Ar dating, and paleontology considerably advances knowledge of the Late Cretaceous–early Paleogene chronostratigraphy and tectonic evolution of Bolivia and adjacent areas. The partly restricted marine El Molino Formation spans the Maastrichtian and Danian (°73–60.0 Ma). Deposition of the alluvial to lacustrine Santa Lucia Formation occurred between 60.0 and 58.2 Ma. The widespread erosional unconformity at the base of the Cayara… Expand
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