Essay Examples on University of South Australia

Yellowstone National Park is a very exciting Place

Yellowstone National Park is a very exciting place located in the states of Wyoming Idaho and Montana Yellowstone National park is placed upon a volcanic hotspot making the trip very adventurous and exciting Although the park itself is very interesting the formation of the park is very eye opening The Earth has 3 main layers the core Mantle and the crust The Earth's crust and upper mantle or lithosphere is divided into many plates that we call plate tectonics Convection currents in the asthenosphere cause the plates to move As plate tectonics moved it caused the molten material in the asthenosphere to make hot spots The asthenosphere is the upper portion of the mantle right below the lithosphere There is so much heat and pressure that rocks can flow through it like liquid The hot spots caused magma to be pushed up to the crust making an explosion of magma This explosion was very big and caused a lot of damage to the area around it After the explosion the dome made from the pressure build up caved in creating a caldera The first formation of these calderas was about 2 1 million years ago This was called the Huckleberry Ridge Tuff and it is over 60 miles across The second big eruption was about 1 3 million years ago This was called Henry's Fork Caldera The most recent eruption was about 640 000 years ago and created a caldera that is about 50 miles long and 35 miles wide This eruption led to the formation of the Lava Creek Tuff This explosion was so big it left ash stretching all the way from places such as Louisiana and California Yellowstone is widely known for its thermal and hydrothermal systems Water temperatures in Yellowstone can get as hot as 400 degrees Fahrenheit but can remain in liquid form due to all of the pressure 

2 pages | 606 words