Along the north side of the Santa Ana Mountains, in Anaheim Hills, there is an outcrop of exposed limestone Limestone is formed from the decay of marine life. When they die, they sink to the bottom. Now, all living things must have phosphorous as it makes up DNA. When the animal dies, the phosphorus decays as well and over time, forms a hard layer of rock we know as limestone. Limestone gets its distinctive color from the calcium in the rock from other parts of decaying organic mater. Over millions of years, this limestone has lifted out of the ocean from below sea level, to Anaheim Hills at a rate of about two inches every year.
Limestone forms from phosphorus rich dead organic matter that falls to the bottom of lakes and oceans. Overtime, limestone is brought to the surface and looks like this:
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1. Santa Ana Mountains Limestone on the first line of your email.
2. Describe the (a) texture AND (b) colors of the limestone at this location.
3. Why do you see different colors of limestone here?
4. Explain the erosion process here AND how it has effect the limestone.
5. Why do you think the limestone is in a wavy pattern here?
6. Would you expect to find fossils here if you broke open a sample of this limestone?
Works Cited
http://geology.com/rocks/limestone.shtml
http://www.sharkbay.org/geological_foundations.aspx