Sedimentary Rocks

Key info for texture of sedimentary rocks

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Sedimentary Rocks

Size

Coarse 2mm+ ________________Conglomerate_____rounded

________________Brecia_____________Angular

Medium 0.05-2mm_________Sandstones

Fine<0.05mm_______Mudstones and Shales

Sorting

Well sorted - narrow particle size range

Poorly sorted - wide range of particle sizes

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Shape

Rounded

Subrounded

Angular

Texturally Mature----from wind erosion

a rock which has rounded clasts and is well sorted

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Orientation

Random-between bedding planes separating the different layers

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