Answer:
Step-by-step explanation:
Yellowstone National Park has experienced three major eruption cycles in the past 2.1 million years. The first cycle occurred around 2.1 million years ago, the second around 1.3 million years ago, and the most recent cycle around 640,000 years ago. The eruptions were explosive and produced massive calderas that can still be seen today. The general sequence of events for the last three eruption cycles involves magma rising from the mantle into the Earth's crust, creating a magma chamber beneath the Yellowstone
supervolcano. Over time, pressure builds up within the magma chamber until an eruption occurs. The eruptions are extremely explosive and can eject huge amounts of volcanic ash, pumice, and other materials into the atmosphere. These eruptions can also cause massive caldera collapse and extensive lava flows. After each eruption, the region experiences a period of relative calm before the cycle begins again.