This paper investigates the paleoenvironmental evolution of a core extracted in middle sector Tinto River estuary, SW Spain, one most polluted areas world due to mining over thousands years (>4 kyr BP) and recent industrial discharges. includes alluvial sands (>6.4 cal BP), bioclastic silts deposited subtidal intertidal channels during after Holocene transgression maximum (6.4-4.3 sedimen...