Skeena sedimentary assemblage 

(Early Cretaceous) 

(Northern British Columbia, Canadian Cordillera, unit Ks)

Consists chiefly of Early Cretaceous fluvial-deltaic to shallow-subtidal sandstone, chert-clast-rich 
conglomerate, sandstone, siltstone, and carbonaceous shale with minor interbedded volcanic rock. Clastic 
rocks derived in large part from rocks to the northeast, but contain local interbedded basaltic to rhyolitic 
volcanic rocks. Local western sources for clastic rocks. REFERENCE: Bassett, 1991.