conglomerate: Quick Facts

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Old Red Sandstone conglomerates

A chart categorizes common textural terms for rocks by grain size in millimeters, dividing them into igneous and metamorphic, sedimentary, and pyroclastic types, with terms like phaneritic, sand, silt, breccia, and ash shown in relation to size.

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orthoconglomerate epiclastic conglomerate petromictic orthoconglomerate intraformational conglomerate oligomictic orthoconglomerate tilloid rudite clastic rock breccia tillite loess clay shale sandstone siltstone permeability lutite claystone

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