Trapp Columbia River, United States
From series “Volcanoes that changed the face of the Earth”
One of the youngest magma traps on the planet is located in the United States. This is the Trapp Columbia River. It began to form about 15 million years ago. The Yellowstone hotspot became the center of magmatism. The area of the magma trap is about 163,700 square kilometers. It extends to several states: Washington, Idaho, Oregon, California, and Nevada.
The researchers estimate that about 174,000 cubic kilometers of lava came to the surface of the earth during the period of activity. The thickness of the trap reaches 1.8 kilometers in some areas. The Columbia River is a major natural attraction. It owes its appearance to this large-scale eruption. The volcanic rocks that came to the surface of the earth were so heavy that the ground sank under them over time. This process forms the basis of the formation of the river bed.
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Trapp Columbia River - interactive map
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