RedStone Rock EarthCache
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This earthcache involves going to GZ and answering a few questions
(see below) Sandstone images.
Actual pictures at GZ
Sandstone is a clastic sedimentary rock composed mainly of sand-sized minerals or rock grains.
Most sandstone is composed of quartz and/or feldspar because these are the most common minerals in the Earth's crust. Like sand, sandstone may be any colour, but the most common colours are tan, brown, yellow, red, gray, pink, white and black. Since sandstone beds often form highly visible cliffs and other topographic features, certain colours of sandstone have been strongly identified with certain regions.
Rock formations that are primarily composed of sandstone usually allow percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs. Fine-grained aquifers, such as sandstones , are more apt to filter out pollutants from the surface than are rocks with cracks and crevices, such as limestone or other rocks fractured by seismic activity.
Sandstone is mined by quarrying. It is sometimes found where there used to be small sea areas. It is usually formed in deserts or dry places like the Sahara Desert in Africa, the Arabian desert in the Middle East and the Australian desert. In the western United States and in central Australia, most sandstone is red. Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts.
Local fact's-
This example of sandstone is a cutting with the road running through it.
Ruthin 'Rhudd' means red 'din' (fort). Red refers to the red sandstone which forms the geology of the area.
Ruthin Castle and the town is built on a red sandstone ridge 100 feet above the Clwyd valley .
The original name of Ruthin was 'Castell Coch yng Ngwern-fôr'
(red castle in the sea-swamps).
Before logging this EarthCache please email us the answers to the following questions:
What is the angle of the bedding planes at GZ to ground
What is the color of the Sandstone at GZ and what has caused this coloring
What is Sandstone sometimes known as
What is the causing factor of the Sandstone cliff face eroding
Use your GPS to find out the elevation at GZ
More information on Sandstone
A nearby cache Jacwen's Tardis (Jacwen's Trail) .
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Thank you to geoawareUK2 for help on setting this earthcache up 
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