Rudite

Rudite is a sedimentary clastic rock with a grain size exceeding 2 mm (0.08 in).^[1] The term is used in the classification of clastic carbonatic limestones, although the granulometrically equivalent terms conglomerate and breccia are often used for limestone too.

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Rudites mainly form by erosion of other rocks or turbiditic re-deposition of pebbles or already consolidated rocks. Some rudites contain rounded components and thus belong to the rock-category of conglomerates, others composed of angular fragments are called breccia. The interstices between the coarse grains are filled with a silicatic or carbonatic matrix. Rudites mostly appear as massive or crudely bedded rocks with a wide-spaced foliation and an irregular and wide-spaced cleavage.

See also

• Lutite
• Arenite

References