Outcrops on the east side of the bridge crossing the Bulkley River are light brown weathering, thick bedded sandstones that are mapped as part of the Lower Cretaceous Skeena Group. These rocks have been uplifted and possibly folded during formation of the Skeena Fold and Thrust belt in Mid-Cretaceous time. Some carbonaceous organic debris can be seen on bedding planes. These rocks are the same age as those hosting the important Telkwa coal beds further west up the Telkwa River valley.