1) Sedimentary rock
Found on
https://www.crosswordclues.com/clue/mudrock
Mudrocks are a class of fine grained siliciclastic sedimentary rocks. The varying types of mudrocks include: siltstone, claystone, mudstone, slate, and shale. Most of the particles are less than 0.0625 mm (1/16th mm or 0.0025 inches) and are too small to study readily in the field. At first sight the rock types look quite similar; however, there a...
Found on
http://en.wikipedia.org/wiki/Mudrock
(from the article `sedimentary rock`) Fine clastics are commonly, but rather simplistically, referred to as mudrocks. Mudrocks actually can include any clastic sedimentary rock in which ... In terms of volume, mudrocks are by far the most important variety of sedimentary rock, probably constituting nearly 80 percent of the Earth`s ... ...
Found on
http://www.britannica.com/eb/a-z/m/133
No exact match found.
