Dufek intrusion
geological formation, Antarctica
Quick Summary
The Dufek Intrusion is a massive layered gabbroic igneous complex located in the Pensacola Mountains of Antarctica. It is one of the world's largest such formations and is associated with early stages of rifting when the supercontinent Gondwana broke apart. This geological event, occurring approximately 180 to 160 million years ago, involved immense outpourings of plateau lavas and related sill intrusions. The Dufek Intrusion is an example of an intrusive igneous rock, formed when magma solidifies beneath the Earth's surface.12
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