Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). If you were standing here 400 million years ago, you would have been surrounded by plant and animal life living on the bottom of the ocean. These primitive organisms would have been busy extracting calcium carbonate from the surrounding sea water in order to build up their stems and shells. This calcium carbonate would eventually pile up to the point where it could be compacted, by its own weight and the pressure of seawater above, to form limestone. This rock was later raised clear of the water by the uplift which formed the Great Dividing Range along the east coast of Australia.
To claim a find on this Earthcache, you must visit the lookout and answer some questions. At the lookout there are three information boards which provide information on the local landscape and geology.
Email me via my profile linked above, with the answers to the following questions:
1. Briefly describe the process by which limestone was formed at this site.
2. Which geographic feature contains the oldest rocks in this area?
3. What is the name of the huge sandstone formation nearby?
Feel free to post a photo of yourself at the lookout. You may post your Found log immediately without waiting for my response. I may not contact you unless I feel your answers require clarification. If I don't receive your correct answers within 7 days of your Found log, I may delete your log. Please don't post answers to the questions above in your log.
First To Find honours go to: J+J.au!