At the Wardner South occurrence, a railway cut just south of Wardner on the west side of the Kootenay River exposes limestone of the Upper Devonian Palliser Formation. The limestone strikes 066 degrees and dips 30 degrees north. The unit is underlain and overlain by limestone, dolomite, siltstone and quartzite of the Upper Devonian Fairholme Group.

The railway cut displays thin-bedded to massive, well-fractured, fine-grained, dark bluish grey, high calcium limestone with some bands and fine mottlings of brown weathering magnesian material. The upper portion of the exposed section contains thin shale partings. A sample of mottled limestone taken near the railway bridge crossing the Kootenay River contained 47.25 per cent CaO, 6.32 per cent MgO, 2.04 per cent SiO2, 0.40 per cent Al2O3, 0.16 per cent Fe2O3 and a trace of sulphur (CANMET Report 811, page 202, Sample 74).