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 ?
This belt contains 9 facies: bioclastic wackestone with pelagic bivalve and foraminifera (O1), coral boundstone (O2), marl with foraminifera (O3), bioclastic mudstone mudstone (O4), bioclastic floatstone (O5), bioclastic packstone (O6), sandy bioclastic packstone (O7), bioclastic packstone to grainstone (O8) and bioclastic grainstone (O9) (Figs.
Petrographically, the dominating thick finely laminated uniform siliceous-carbonate mudstone (MS) oil shale intercalates with variable intervals of grain-bearing oil shale, in which interbeds of proper mudstone alternate with laminae, lenses and thin interbeds of wackestone (WS).
These microfacies includes bioclastic grainstone microfacies, bioclastic ooidal peloidal packstone-grainstone microfacies, Siliciclastic bioclastic wackestone microfacies and peloidal mudstone microfacies.
Thin sections of beds C22/24 and C26 situated immediately above the track surface show, in relative abundance order, fragments of bivalves (ostreids and rudists), benthic foraminifera (Miliolidae, Lituolidae, Textularidae, Ataxofragmiidae), radiolarians (Spumellaria), ostracods, corals (Scleractinia), gastropods, and echinoids in a mainly wackestone texture with biomicritic matrix (Fig.
The matrix of the reef-core limestone is composed of wackestone to mudstone, with a high probability of a similar mix of authochthonous and allochthonous micrite (Kroger et al.
The depositional environment depicted is high energy sand shoals, bar, or beach for Grainstone microfacies, inner shelf with moderate water circulation for Packstone microfacies, lagoonal settings with open and restricted circulation for Wackestone microfacies and low energy environment like lagoon and on outer shelf for Mudstone microfacies.
c) This microfacies is a wackestone (occasionally mudstone) with foraminifera, charophytes, ostracods and gastropods (Fig.
Carbonate ellipsoidal nodules up to 10 cm in length are scattered amongst the shale and wackestone facies, preferentially located along bedding planes.
Wackestone microfacies, (planktonic bioclastic wackestone and dolomitic bioclastic wackestone as submicrofacies), (3).
bioclastic wackestone, packstone or grainstone) are common too, and they formed in a large variety of environments (flanks of buildups, shallow tidal flats or storm beds in inner or medial carbonate platforms).
2006) noted that Berry & Murphy (1975) found several Ludlow graptolites (Neodiversograptus nilssoni, Saetograptus colonus, Bohemograptus bohemicus) in the Simpson Park I section, Nevada, in the lower part of the lime mudstone wackestone bed of the Roberts Mountain Formation.