D.K Armstrong

• A regional evaluation of the shale resource potential of the Upper Ordovician Queenston Formation, southern Ontario
• Lithostratigraphic logging of six bedrock boreholes in the Rouge River Valley, southern Ontario
• Paleozoic geology of the northern Lake Simcoe area, south-central Ontario / by D.K. Armstrong
• Stratigraphy and depositional environments of Niagaran carbonates, Bruce peninsula, Ontario / Derek K. Armstrong [and others]