EXAM TWO V Flashcards
The most powerful of the three Yellowstone eruptions was ______ Caldera.
Big Bend Ridge
The smallest of the three Yellowstone caldera eruptions was ________ caldera
Park Island
The last major Yellowstone Park eruption produced the _____, a pyroclastic deposit that covered a large portion of the conterminous U.S. to form
Lava Creek Tuff
Based on the timing of eruption of the 3 major calderas in Yellowstone Park, the recurrence interval is about _______ yearsL
600,000
Recent serveys around Yellowstone Lake suggested a younger eruption - 160,000 years ago produced a smaller caldera, named ________:
West Thumb
The following were mentioned as indicators of active volcanic activity at Yellowstone except for __________:
harmonic tremors
Most earthquakes in Yellowstone Park are located along the
Hebtgen Lake fault
Over time, _______ deposits tightly cement the volcanic rock together, strengthening the channel walls and enabling the geyser to persist:
sinter
Most geysers for in places where there is _______ rock:
rhyolite
Geysers that erupts from a pool of water, typically in a series of intense, even violent bursts are called _______ geysers:
fountain
________ geysers erupt in a steady, narrow jet of water and usually form a mound of siliceous sinter or geyserite rock
Cone
The world’s tallest geyser at 300 ft. is ______ Geyser
Steamboat
The estimated age of the 12-ft. high cone geyser, _______ Geyser, is between 5,000-15,000 years old
Castle
______ Geyser is an example of a fountain geyser
Grand
______ Geyser was named for the predictable timing of its eruptions:
Old Faithful
