Power of Water EarthCache
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EarthCache in the Owens-Putnam State Forest. Parking is available at N39 22.650, W086 50.860.
While I was hiking through the Owens-Putnam Forest, I stumbled across a fantastic site for my first EarthCache. The location is a great example of the erosive power of water on limestone.
Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). Limestone often contains variable amounts of silica in the form of chert or flint, as well as varying amounts of clay, silt and sand as disseminations, nodules, or layers within the rock.
Pure limestones are white or almost white. Because of impurities, such as clay, sand, organic remains, iron oxide and other materials, many limestones exhibit different colors, especially on weathered surfaces. Limestone may be crystalline, clastic, granular, or massive, depending on the method of formation. Crystals of calcite, quartz, dolomite or barite may line small cavities in the rock
Limestone is especially popular in architecture, and many landmarks are made primarily of the material. Limestone is readily available and relatively easy to cut into blocks or more elaborate carving. It is also long-lasting and stands up well to exposure. However, it is a very heavy material, making it impractical for tall buildings, and it is also quite expensive.
Limestone was most popular in the early 20th and late 19th centuries. Train stations, banks and other structures from that era are normally made of limestone. Limestone is used as a facade on some skyscrapers, but only in thin plates for covering rather than solid blocks.
In the United States, Indiana, most notably the Bloomington area, has long been a source of high quality quarried limestone, called Indiana limestone.
Other uses include the manufacture of quicklime, cement and mortor, road bed aggregate, and toothpaste!
For logging requirements, please answer the following via e-mail:
1) Approximately how deep is the pool after the cascade?
2) Approximately how wide is the pool?
3) What is the approximate flow rate of the water (in ft/sec)? The flow rate can be determine by placing a leaf in the water and measuring the time it takes to travel a known distance.
Finally, post a photo of yourself with the location in the background.
CONGRATULATIONS JRC32 ON THE FTF!
Additional Hints
(Decrypt)
Oevat n pnzren