claystone


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clay·stone

 (klā′stōn′)
n.
A fine-grained, dark gray to pink sedimentary rock consisting primarily of compacted and hardened clay.

claystone

(ˈkleɪˌstəʊn)
n
(Geological Science) a compact very fine-grained rock consisting of consolidated clay particles
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.claystone - fine-grained rock consisting of compacted clay particles
rock, stone - material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
References in periodicals archive ?
Claystone is a compact very fine-grained sedimentary rock consisting primarily of clay-size mineral particles that are commonly represented by clay minerals.
The uranium mineralisation is hosted within reduced carbonaceous sands and weathered granitic sands in an aquifer capped by 2m to 8m clay horizon and 40m to 60m of unmineralised sandstone and claystone and underlain by weathered and crystalline granite basement.
However, Omatshola and Adegoke (1981) divided the group into three lithologic units: Ise formation made of conglomerates and grits at the base overlain by coarse to medium grained sands with interbeded kaolinite; Afowo formation composed of coarse to medium grained sandstone with interbeded shale, siltstone and claystone with the sandy facies being tar-bearing while the shale is organic-rich (Enu, 1990); and the Cretaceous sediment composed of fine to medium grained sandstone at the base, overlies by shale, siltstone with interbeded limestone, marl and lignite called Araromi formation.
Lenticular goethite-enriched interlayers of conglomerate often occur, in which clasts of siltstone and silty claystone are enclosed into sandy matrix.
In Ratio analysis, 2/4, 5/4, 5/7 ratios ofbands are applied to highlight sandstone, carbonate and claystone respectively.
Hydrocarbon indications in sands beneath a thick claystone top seal have been recorded whilst drilling, but hole instability issues have required the drilling of a sidetrack to comprehensively log and sample these zones of interest.
The black shale is a finely laminated dark claystone with the organic content of around 10-20%, containing also transitional metals more than the shale on average [14].
Lense-shaped dolomite-cemented zones have in many places uneven surfaces, occur above claystone beds or surfaces in the upper part of the Arukula Fm, and in the Burtnieki Fm.
The high landslide susceptibility of the Vsetin Member of the Zlin Formation has been demonstrated, presumably due to its susceptibility to rapid weathering that results from the high claystone content and tectonic fragmentation.
At the Shelf shallower lignite hosted uranium mineralisation within the upper sandstone and claystone was also reported.
The geology of the area is limited exposed and is represented by tertiary sandstone and claystone formations, covered by quaternary deposits (De la Espriella et al.