The quartz in granite begins to melt at 650°C, so if we find a migmatite where quartz has melted in a granitic rock and we know the temperature in the region increased with depth by about 25°C per kilometer, we could estimate the depth that the
rock had been at to be about ________.
A) 23.5 km B) 26.0 km C) 12.5 km D) 18.0 km
B
You might also like to view...
The Ediacaran fauna are some of the best, most beautifully preserved fossils of the Proterozoic. What is so special about these fossils?
A. They are the undisputed oldest multi-cellular eukaryotic organisms found to date. B. They are the undoubted oldest animal fossils found to date. C. Both of the above answers are true for the Ediacaran fossils. D. Neither are true, the Ediacaran fossils represent the oldest fossil coral found to date.
What is the principle advantage of geothermal energy? What will be an ideal response?
Having a diversified economy in the local economy is important in order to limit any negative multiplier effects that may occur from declines in a single industry
Indicate whether the statement is true or false
The largest known volcano in the solar system is ________
A) Olympus Mons on Mars B) Solfatara on Jupiter C) Mauna Loa, Hawaii, on Earth D) Vulcan on Venus