Podcast
Questions and Answers
What is the estimated depth of the magma that bubbled below the Shenandoah Valley?
What is the estimated depth of the magma that bubbled below the Shenandoah Valley?
- 10 to 20 kilometers
- 80 to 100 kilometers
- 40 to 65 kilometers (correct)
- 120 to 150 kilometers
What is the type of rock that Mole Hill and Trimble Knob are primarily composed of?
What is the type of rock that Mole Hill and Trimble Knob are primarily composed of?
- Basal rock
- Igneous rock (correct)
- Sedimentary rock
- Metamorphic rock
What are the rocks called that the magma picked up as it rose to the surface?
What are the rocks called that the magma picked up as it rose to the surface?
- Sedimentary rocks
- Xenoliths (correct)
- Igneous rocks
- Xenolites
Approximately how many volcanoes have been identified in Virginia by Johnson?
Approximately how many volcanoes have been identified in Virginia by Johnson?
What is the reason why humans are fascinated by volcanic activity, according to Johnson?
What is the reason why humans are fascinated by volcanic activity, according to Johnson?
What is the name of the conservation organization that helped protect Mole Hill through a conservation easement?
What is the name of the conservation organization that helped protect Mole Hill through a conservation easement?
Where are Virginia's two best-known volcanoes located?
Where are Virginia's two best-known volcanoes located?
What is the age of the volcanoes in Virginia?
What is the age of the volcanoes in Virginia?
What is unusual about the volcanoes in Virginia?
What is unusual about the volcanoes in Virginia?
Why did the volcanoes in Virginia erupt?
Why did the volcanoes in Virginia erupt?
What is unique about the location of Virginia's volcanoes?
What is unique about the location of Virginia's volcanoes?
What was the time period of volcanic activity in Virginia?
What was the time period of volcanic activity in Virginia?
