Feature maps of the areas surrounding the primary sampling sites. Lake Burley Griffin (A) is in the centre of Canberra, the national capital, while Captains Flat (B) is located 75 km upstream of the lake. The yellow markers indicate extraction sites of the sediment cores listed in Table 1. See Figure 1 for the geographical locations of these areas. DOI: https://doi.org/10.1525/elementa.440.f2