ok i am doing a project and just wondering cause this depends on a grade so i need an answer! PLEASE!
2006-11-12 08:18:25 · 3 answers · asked by my_emo_romance 2 in Science & Mathematics ➔ Earth Sciences & Geology
from the website of Geotimes, article by Megan Sever:
"Mount Rushmore and Crazy Horse are both carved from the Harney Peak granite, which is named for the highest point east of the Rocky Mountains at 7,242 feet. The granite of the Harney Peak batholith was emplaced around 1.7 billion years ago at a depth of 3 to 6 miles, says Mark Fahrenbach, a geologist with the South Dakota Geological Survey. Some of the granite cooled quickly, forming finer mineral grains, and some cooled more slowly forming coarse-grained pegmatite. Both carvings exhibit a mixture of each rock texture."
2006-11-12 08:41:26 · answer #1 · answered by luka d 5 · 0⤊ 0⤋
It is the native granite (I happen to have a chunk of it. They sell nice hand samples for $1 to help offset the cost of the work)
2006-11-12 09:21:54 · answer #2 · answered by Anonymous · 1⤊ 0⤋
Earth
2006-11-12 08:20:56 · answer #3 · answered by Brian 1 · 0⤊ 2⤋