Fig. 2
From: Sources of salinity and arsenic in groundwater in southwest Bangladesh
Summary of sediment lithology and radiocarbon ages from the thirteen Polder 32 cores. Drill core and tubewell sampling sites were projected to the red profile line in Fig. 1. Yellow numbers are calibrated radiocarbon ages in calendar years before present of mangrove wood recovered from the cores. Horizontal lines mark the approximate locations of the 8000 and 10,000 year isochrons. Numbers beneath tubewells are 14C groundwater ages [11]