Gravel Road EarthCache
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Ensure you stay on public land by parking in either UC Park or Red Horse Park. Follow the frisbee golf course down to Cibolo Creek and turn left on the gravel road. Although it may appear this road was created by man hauling in gravel to build the roadbed, this gravel road was created entirely by nature. GZ is a fork in this gravel road.
Gravel is rock that is of a specific particle size range. Specifically, it is any loose rock that is between 1/12 and 2.5 inches in its smallest dimension. The next smaller size class in geology is sand (0.0025 to 0.0787 inches) and the next larger size is cobble (2.5 to 10.1 inches). Rocks greater than 10.1 inches are categorized as boulders.
Large gravel deposits such as the gravel bed in Cibolo Creek just upstream from Universal City Park are a common geological feature and are formed as a result of the weathering and erosion of rocks. Likely, the action of flash floods through Cibolo Creek over many years created this large and facinating bed of sand, gravel, cobble and boulders.
To claim this cache, accomplish the following earth tasks (e-mail me your answers):
1. Measure the surface area of the larger gravel bed through which this gravel road cuts. Your GPS mark function may be helpful to determine the width and length. The bed begins several hundred yards north of GZ and extends south past GZ. Portions of the bed is obscured by vegetation.
2. Observe the size of the rocks around GZ. Would you consider the majority of those rocks sand, gravel, cobble or boulders?
3. Identify the type of gravel in this streambed using the list of gravel types in following link: (visit link)
4. Although not required, we would appreciate you uploading a photo of you around the cache.
(Some information from Wikipedia, the Free Encyclopedia)
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Treasures
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