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Texture Detrital (Clastic Texture) vs. Chemical (Crystalline Texture)

Texture Detrital (Clastic Texture) vs. Chemical (Crystalline Texture). Crystalline Texture Coarse Fine. Chemical Rock Texture. Clastic Texture Grain Size Grain Sorting Grain Rounding Grain Shape Sediment Maturity. Detrital Rock Texture. Grain Size. Gravel 2mm Sand 1/16 mm

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Texture Detrital (Clastic Texture) vs. Chemical (Crystalline Texture)

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  1. TextureDetrital (Clastic Texture)vs.Chemical (Crystalline Texture)

  2. Crystalline Texture Coarse Fine Chemical Rock Texture

  3. Clastic Texture Grain Size Grain Sorting Grain Rounding Grain Shape Sediment Maturity Detrital Rock Texture

  4. Grain Size • Gravel2mm • Sand1/16 mm • Mud - Silt1/256 mm • Mud - Clay

  5. Detrital Rock Names(Based Primarily on Grain Size) Gravel -Sized: Conglomerate Sand Sized: Sandstone Mud-Sized: Mudstone Siltstone Shale

  6. Gravel Sand Silt Clay River, Beach River, Beach, Desert Delta, Shallow Ocean Deep Ocean, Lake, Swamp Grain Size Interpretation • High Energy • Low Energy

  7. Sorting

  8. Sorting Interpretation: Poorly Sorted Well Sorted Transport Agent Gravity and Glaciers (and Rivers) Water and Wind

  9. Clast SupportedConglomerate(River Deposits)

  10. Matrix Supported Conglomerate(Glacial/Landslide Deposits) 2.2 Gyr Conglomerate “Modern”Glacial Sediments

  11. Interpretation:Distance of Transport Short Far

  12. Surface of Saturn’s Moon - Titan

  13. Rounding & Shape Spherical Oblong

  14. Gravel Sized Detrital Rocks(Subdivided Based on Grain Roundness) Conglomerate Breccia

  15. Maturity • Immature • Poorly Sorted • Angular grains • Mixed Composition • Mature • Well Sorted • Well Rounded • All Quartz

  16. Sandstones(Subdivided based on maturity) Quartz Sandstone Arkose (Sandstone) Lithic Sandstone Greywacke

  17. Sandstones Under a Scope

  18. Diagenesis: Lithification Sediment Rock

  19. Cementation • Typical Cement: • Calcite • Quartz

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