Geological and taphonomic significance of electron spin resonance (ESR) ages of Middle-Late Pleistocene marine shells from barrier-lagoon systems of Southern Brazil

The Coastal Plain of Rio Grande do Sul state (CPRS), southern Brazil, encompasses Quaternary barrier-lagoon depositional systems developed in response to successive marine transgressions driven by glacial-interglacial cycles. As an attempt to refine he chronostratigraphy of the Pleistocene depositional systems, electron spin resonance (ESR) ages were obtained in 42 disarticulated shells of the marine bivalve Amiantis purpurata preserved in...