Under the Dunham classification (Dunham, 1962) system of limestones, a grainstone is defined as a grain-supported carbonate rock that contains less than...

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Packstone a grain-supported fabric containing 1% or more mud-grade fraction. Grainstone a grain-supported carbonate rock with <1% mud. Recognising that these...

Grainstone with calcitic ooids and sparry calcite cement; Carmel Formation, Middle Jurassic, of southern Utah, US...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

Formation. This formation is typically a thinly laminated packstone and grainstone. There are stromatolite beds as well as corals preserved in this formation...

calcite crystals inside a recrystallized bivalve shell in a biopelsparite Grainstone with calcite ooids and sparry calcite cement; Carmel Formation, Middle...

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Incompletely consolidated and poorly cemented coquinas are considered grainstones in the Dunham classification system for carbonate sedimentary rocks....

beds 80 m (260 ft) Midale Beds Osagian oolitic to pisolitic and skeletal grainstone to packstone with vuggy porosity, dolomite, porous wackestone 45 m (150 ft)...

Packstones with very small volumes of carbonate mud may be misclassified as grainstone. Incorrectly estimating the volume of the component grains >2 mm. Dunham...

Mauddud formation is made up of shallow marine, bioclast wackestone, grainstone, and shoal surrounded by lagoonal dolomite. Lastly, the Wara formation...

dark grey argillaceous limestone. The texture of the member tends to be grainstone to wackestone. Bioherms are common through this member. Many large structures...

formed a 7 m (23 ft)-thick bed of horizontal and cross-bedded packstone to grainstone, which are porous and therefore less compact. B-5 was a 4 m (13 ft)-thick...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

produce great volumes of carbonate mud. Rocks here are mudstones to grainstones, depending on the energy of the environment. The reef is the rigid structure...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

Formation. The Kainer Formation includes the Dolomitic, Kirschberg, and Grainstone Members. Earth sciences portal Texas portal Paleontology portal List of...

limestone) near Manlius, New York. The Manlius is composed of limestone, grainstone, calcareous mudstone and bindstone. The Manlius is 419 - 411 Ma. The Thacher...

Middle Jurassic, mid-Bathonian stage. It predominantly consists of ooidal grainstone. The term "Stonesfield Slate" refers to slaty limestone horizons within...

stromatolite base of this limestone can overlie orange lime-sand mudstone to grainstone recording the advancement a shoreline through the area creating the open...

forming the Atlantic Coastal Ridge and the lower Florida Keys is an oolitic grainstone which includes fossils of corals, echinoids, mollusks, and algae. The...

consists of cream to light-brown or tan, poorly hardened to very hard, grainstone, packstone and wackestone, with rare mudstone. Fossils found throughout...

geology Formations. Most of the settlement is on Marlstone Rock (Iron-grainstone, 174-191 million years old), and as you go down the valley towards the...

aragonite seas Tectonic mechanism for changing Mg/Ca ratios in seawater Grainstone with calcitic ooids and sparry calcite cement; Carmel Formation, Middle...

v t e Dunham classification rocks Mudstone Wackestone Packstone Grainstone Floatstone Rudstone Bafflestone Bindstone Framestone...

grade upward into thinner bedded, sparsely fossiliferous packstones and grainstones of this member's upper part that accumulated as subtidal shoals. A rippled...

downward into more bioturbated muds. The subtidal facies show carbonate grainstones and lagoonal muds. These facies sequences, except for the halite that...