Rio Seco Formation – Saline Bay

Alternating beds of  meta-limestones, black phyllites and meta-quartzites

Variable bed thickness related to lithology on a fold

Metaquartzite bed cut by numerous quartz filled veins and fractures

Beach is made up of predominantly well rounded quartz pebbles

Floating clast in phyllite

Raised Pleistocene lignite bed / beach

Contact between lignite and overlying Pleistocene ? deposits

Bioturbated lignite

Lignite overlain by Pleistocene deposits