wackestone


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wackestone

[′wak·ə‚stōn]
(petrology)
A limestone composed of mud (micrite) containing more than 10% particles (grains) with diameters greater than 20 micrometers scattered throughout.
References in periodicals archive ?
Arwa (Kimmeridgian to Tithonian) Fm is composed of argillaceous limestone, deep-water lime mudstone, and locally minor packstone, wackestone, grainstone, and black shale.
The classification of Dunham, 1962 divides limestone on the basis of texture into grainstone, packstone, mudstone, wackestone and boundstone.
Most Tyndall Stone consists of dolomite-mottled, fossiliferous wackestone, which was deposited in a stable shelf environment.
The rock slab that contains the crinoids is a medium- to light-brown, poorly laminated, argillaceous wackestone to carbonate mudstone with a lenticular white chert bed and iron staining.
4-m-thick cyclic interval of thinly bedded wackestone and nodular clayey wackestone, which represents shallow-subtidal to tidal-flat deposition.
The Skeletal Lithofacies contains articulated bivalves in life position as well as patches of wackestone, indicating considerable heterogeneity of fabric.
Palynofacies Lithology 1 Lime mudstone 2 Wackestone, Packstone 3 Coal 4 Siltstone, shale Palynofacies Characteristics 1 Predominantly amorphous organic matter ([greater than]90%), few marine microfossils and wood 2 Dominated by amorphous organic matter (50%), followed by black debris, brown-black debris, marine microfossils, wood, cuticles, and Sporomorphs in that order 3 Brown-black debris dominant (45%), followed by wood and black debris and sporomorphs 4 Variable numbers of all types of Palynodebris
5 m, is an ostracod thrombolitic wackestone in which ostracods dominate with some stromatoporoid and porostromate problematica.
The upper Fusselman is dominated by widespread thick, crinoidal grainstones, and lesser amounts of dolomitic wackestone to skeletal packstone.