Sedimentary Rocks

• Carbonatic Rocks
• Evaporite rocks
• Terrigenous Rocks
Grain Size
Terrigenous Rocks
Packing
Roundness
Sorting

• Weathering

Turbidite

• Turbidites

Fossils

• Ammonites
• Bivalves
• Brachiopods
• Gastropods
• Trilobites

Sedimentary Minerals

• Anhydrite
• Baryte
• Chalcedony
• Gypsum
• Glauconite
• Magnesite

Texture

• Allochem
• Carbonatic Matrix
• Dolomitization
• Syntaxial Overgrowthn

Rocks

• Ammonitico Rosso
• Arkosic Sandstones
• Bioclastic Grainstone
• Oolitic Ironstone
• Breccia
• Conglomerate
• Encrinite
• Lithic Arenite
• Mudstone
• Oolite
• Orthoconglomerate
• Radiolarite
• Wackestone

Wackestone

Wackestone is a matrix-supported carbonate rock that contains over 10% allochems in a carbonate mud matrix. This is part of the Dunham classification of carbonate rocks. In the other widely used classification due to Folk, an equivalent description would be, for example, an oopelmicrite, where the allochems in question are ooids and peloids. In cases where grains are exceptionally large, Embry and Klovan (1971) designated these carbonates “floatstones.” This bioclastic wackestone consisting of sparse bioclasts and organics set in a micrite matrix. Bioclasts are mainly moulds of mollusc shells infilled with sparry calcite

Dunham classification.

Folk classification.

Bibliography

• E. WM. Heinrich (1956): Microscopic Petrografy. Mcgraw-hill book company,inc
• M. J. Hibbard (1994): Petrography to Petrogenesis. Prentice Hall editore

Photo

gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)
gastropods filled by sparry calcite. XPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)
gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)
gastropods filled by sparry calcite. PPL image, 2x (Field of view = 7mm)	gastropods filled by sparry calcite. PPL image, 10x (Field of view = 2mm)	gastropods filled by sparry calcite. XPL image, 10x (Field of view = 2mm)
gastropods filled by sparry calcite. PPL image, 2x (Field of view = 7mm)	gastropods filled by sparry calcite. XPL image, 2x (Field of view = 7mm)	gastropods filled by sparry calcite. PPL image, 2x (Field of view = 7mm)