Iceland Lake Pluton
Appearance
The Iceland Lake Pluton is a large granitic intrusion in Strathcona Township of Temagami, Northeastern Ontario, Canada. It is one the three separate granitiod intrusions that constitute the Temagami greenstone belt, consisting of rocks ranging from diorite to quartz monzonite. The age of the intrusion is estimated to be about 2,736 billion years old, as well as an adjacent rhyolitic lava flow using the uranium-lead dating technique. This suggests that the Iceland Lake Pluton might be the remnants of a magma chamber of a volcano that erupted felsic magma. The pluton is overlain by sediments of the younger Huronian Supergroup.