B What is the age of the youngest volcano in the Yellowstone track C What is

B what is the age of the youngest volcano in the

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B. What is the age of the youngest volcano in the Yellowstone track? C. What is the age of the oldest volcano in the Yellowstone track? D. How many years passed between the first (oldest) volcano and the most recent (youngest) volcano? E. Which direction did the North American Plate move during this time period? Give a compass direction (you can use the compass rose diagram next to the map). Then explain how you know the direction of motion. F. What is the rate of motion (velocity) of the North American Plate? To find this, you will need to use this equation: velocity = distance / time Page 2 of 4
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GEOL 101 Physical Geology Figure 1: This map shows the volcanic calderas created as the North American tectonic plate moves over the Yellowstone Hot Spot. The age of the rocks that make up the calderas is given in millions of years before present (Ma). The age of the rocks tells us the time, before present, when that part of the plate was over the hot spot. Map scale: 1 cm = 65 km. One cm on your ruler is equivalent to 65 km in reality. *Note: there is a range of rock ages for each caldera. Use the median (middle) age and measure from the center of each caldera. Page 3 of 4
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GEOL101 – Physical Geology Part 3. Hot Spot Islands versus Volcanic Island Arcs There are several different ways that volcanoes are formed by the motion of plates. The melting at hot
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