What mountain building event, which occurred about 35-55 million years ago, created the front ranges and foothills of the Rocky Mountains?
A) The Laramide Orogeny
B) The Columbia Orogeny
C) The Gondwana Orogeny
D) The Silurian Orogeny
A
Environmental & Atmospheric Sciences
You might also like to view...
The silicate mineral group contains all but which of the following minerals?
a. quartz b. plagioclase c. olivine d. dolomite
Environmental & Atmospheric Sciences
The altimeter and barograph are two types of aneroid barometers
a. True b. False
Environmental & Atmospheric Sciences
The objectives of China's Three Gorges Dam are to control river flooding and to create a resort
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Granite and ________ are composed predominantly of feldspar and quartz.
A. ultramafics B. oceanic crust C. diorite D. basalt E. rhyolite
Environmental & Atmospheric Sciences