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INTERESTING GEOLOGICAL FACTS:
- Granites exposed in the Arbuckle Mountains are almost 1.4 Billion Years Old and are the oldest exposed rocks between the southern Appalachians and the Rocky Mountains.
- Virtually all of the lakes in Oklahoma are artificial.
- The longest gypsum cave in the world, outside Russia, is Jester Cave in Greer County.
- The highest point in Oklahoma is 4,973 feet at Black Mesa State Park. The mesa is capped by a basalt lava flow from a volcano eruption over 5 million years ago in southeast Colorado.
- Oklahoma's State Rock is the barite rose or "rose rock" which is found in the Garber sandstones (Permian) in Norman and Noble.
Source: Oklahoma Geological Survey