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Bituminous rocks

Bituminous rocks are sedimentary rocks, usually shale, sandstone, limestone or dolostone/dolomite, that contain traces of tar, bitumen, asphalt, petroleum or carbon. For example anthraconite is a bituminous form of limestone, calcite or marble. Also can be known as "carbonaceous rocks". See sedimentary organic matter.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Bituminous_rocks". A list of authors is available in Wikipedia.
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