The Athabaskan series at Beaverlodge lake Saskatchewan.

Note: Title page missing in manuscript.A series of clastic sediments nearly two miles in thickness is exposed in the Beaverlodge Lake area in northern Saskatchewan. It overlies unconformably a complex of highly metamorphosed and deformed ancient rocks. The series consists of first, a basal conglomerate composed of angular fragments, second, a succession of "red" siltstone, sandstone, and arkose, all of which contain pebbles and conglomerate bands and, third, coarse loosely consolidated conglomerates composed of well-rounded fragments. Because of its similarity to the Athabaska Sandstone of Keweenawan Age, south of Lake Athabaska, the series is called the Athabaska Series. Interbedded with sandstone in a zone about halfway up the series are several bodies of highly amygdaloidal basic lava flows. Cutting the structure are narrow basic dykes. The Athabaska Series is believed to have been deposited rapidly under shallow water conditions in a semi-arid temperate climate. Though the series has been deformed and severely faulted, the sediments are in some places scarcely consolidated