Topic 8 Mudrocks PDF
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This document provides information on mudrocks, including different types of mudrocks, their properties, and their applications. The document also covers clay minerals and common depositional environments of mudrocks.
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Mudrocks Siltstone: grain size between 4 and 62 µm Claystone: grain size < 4 µm Mudstone: mixture of clay and silt grain size in sediment Other terminology of Mudrock Shale: laminated and fissile Slate: with cleavage Marl: calcareous Clay minerals definition Sheet si...
Mudrocks Siltstone: grain size between 4 and 62 µm Claystone: grain size < 4 µm Mudstone: mixture of clay and silt grain size in sediment Other terminology of Mudrock Shale: laminated and fissile Slate: with cleavage Marl: calcareous Clay minerals definition Sheet silicates that occur in clay-sized fraction (< 4 µm) of soils, sediments and sedimentary rocks Examples: – kaolinite – illite – chlorite – smectite SEM image of kaolinite Mudrocks The course Some uses of clay mineral Some industrial uses of Clay mineral -Drilling mud additive in petroleum industry -Paper coating and filler -Ceramics (pottery) -Cosmetics (lipstick, make up and nail polish) -Building products (bricks, cement) -Absorbents (cat litter) -Pharmaceuticals -Food additives Common depositional environments of mudrocks Non-marine environments: – soil – river flood plains – Lakes Marine environments: – muddy coastlines – distal delta foresets – open-marine clastic shelves – ocean floor
