From Miller and Richter (1994): "This is the largest of the young (<1.5 Ma)
basalt-basaltic andesite cinder cones that are common in the northwestern part of the Wrangell volcanic field. The cone of Mt. Gordon, about 5 km in diameter and 600 m high above its base of older Wrangell
lava, also erupted a significant volume of basaltic lava flows (Richter and Smith, 1976)."