Extended Data Fig. 1: Lithostratigraphy and physical properties of the Junín piston core.

Stratigraphic column (a) of main lithotypes in the drill core from the depocentre of Lake Junín and downcore plots illustrating variations in percentage siliciclastic sediment (b), magnetic susceptibility (MS; c), Ti/Ca (d), CaCO3 (e), b* sediment colour index (f), percentage total organic carbon (TOC; g) and digital composite core image (h).