Sandstone
przystanki ściezki geologicznej 
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Sandstone is formed out of sand, when sand grains are glued together with a mineral solution. It usually happens on the bottom of the sea or the ocean, rarely on the land. Sandstones generally consist of quartz grains, so they are typically light-coloured. Darker hues, brown or rusty, come from iron compounds released due to the decomposition of iron-containing compounds that are less resistant to weathering. Diluted in water, they permeate into the rock through small cracks and fissures. They often form crystal dendrites that resemble fern leaves. However, they are not plant fossils.
In comparison with other rock formations, sandstone is susceptible to weathering, which turns it into sand.
It is about 80 million years old.
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Mica-schist
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Basalt
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Melaphyre
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Amphibolite
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Sandstone
Sandstone is formed out of sand, when sand grains are glued together with a mineral solution. It usually happens on the bottom... more »
Dolomite marble
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