Hello,

I have been to the Colorado’s Rocky Mountains before, to see the rock formation that are easily seen. I did not realize the difference between the Plutonic and volcanic formations. In our travels as a family my son is very deliberate about rock as he collects colorful rock for collection. I realized that he in fact, had a piece of Plutonic rock in his collection. We have travel to several countries states in our travels we visit the local museum to find out about the culture of the country or state. The rock has been my son’s favor topic. I am more aware of the rocks that I see, this make rock seem even color than just the colors and shape, it’s interesting to define some of the minerals that may be in the rocks. Interestingly the Colorado Rocky Mountains is a composite of Plutonic (intrusive) rocks.

“These rocks were formed long ago as magma rose from deep sources and solidified before making it all of the way to the surface. As this magma rose, in many places, it brought with it precious minerals such as gold, silver, lead, and molybdenum (used in hardening steel).”

Distribution of granitic Batholiths in Colorado. Retrieved from: http://coloradogeologicalsurvey.org/colorado-geology/igneous-rocks/plutonic-rocks/