Figure 14From: Seasonal variations in pore water and sediment geochemistry of littoral lake sediments (Asylum Lake, MI, USA)Fe associated with five operationally-defined fractions (exchangeables, carbonates, FMO, organics/sulfides and microwave-digestible residual) for cores collected in (A) winter (Mar 2002) and (B) spring (Jun 2002).Back to article page