- Types:
- show 12 types...
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argillite
a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages
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arenaceous rock
a sedimentary rock composed of sand
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argillaceous rock
a sedimentary rock formed from clay deposits
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rudaceous rock
a sedimentary rock formed of coarse-grained material
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slate
a fine-grained metamorphic rock that can be split into thin layers
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limestone
a sedimentary rock consisting mainly of calcium that was deposited by the remains of marine animals
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shale
a sedimentary rock formed by the deposition of successive layers of clay
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breccia
a rudaceous rock consisting of sharp fragments embedded in clay or sand
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rottenstone, tripoli
a weathered and decomposed siliceous limestone; in powdered form it is used in polishing
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sandstone
a sedimentary rock consisting of sand consolidated with some cement (clay or quartz etc.)
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humic shale
shale that is rich in humic acids
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oil shale
shale from which oil can be obtained by heating
