What is the approximate depth of the caldera (from the rim down to the floor)?
The question is based on Map T-2, the “Umnak, Alaska,” topographic map (scale 1:250,000; contour interval 200 feet), Map T-21b, a satellite image; and Figures 35-3 and 35-4, a shaded relief map and a stereogram showing the Okmok Caldera (53°25'33"N, 168°07'38"W) on Umnak Island in the Aleutian Islands.
What will be an ideal response?
about 1600 feet
(measured from rim elevation of approx. 3200 ft.)
You might also like to view...
Explain why the middle parts of clouds have so few ice crystals despite temperatures there that are well below freezing.
What will be an ideal response?
The "sphere" that intersects with all of the other spheres is the
A. biosphere. B. hydrosphere. C. lithosphere. D. atmosphere.
What period had the greatest amount of cratonic formation?
A) Hadean B) Proterozoic Eon C) Archean Eon D) Phanerozoic Eon
Traditionally, policies for environmental protection in the U.S. have focused on __________________ pollutant could be emitted.
A. eliminating the risk that any B. setting limits for how much of each C. avoiding the risk that any air D. eliminating the risk that a toxic