Limestone is a sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forarms, mollusks and shells. Its major material is calcium carbonate (CaCO3). Most limestone is composed of grains consisting of skeletal fragments of marine organisms.
(Example of a shell in limestone)
A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age preserved in various materials. This preservation occurs mainly in rocks, but can also occur in materials such as sediments. Examples include bones, shells, exoskeletons and stone imprints of animals. Fossils provide important data regarding biological evolution, dating and reconstructing the geologic history of the Earth.
At GZ you will be able to answer all the questions. Please do not include pictures in your log that may answer these questions.
Questions:
1. Find the largest shell fossil and tell me the diameter in the widest part?
2. Do you see any other fossils? If so, describe their shape, length, and width.
3. Do the nearby pillars have fossils too?
4. Please include a picture of you, or an object in the area to prove you were here without revealing any of the answers to the questions above.