argillite


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argillite

[′är·jə‚līt]
(petrology)
A compact rock formed from siltstone, shale, or claystone but intermediate in degree of induration and structure between them and slate; argillite is more indurated than mudstone but lacks the fissility of shale.

argillite

A rock containing chiefly clay materials; derived from claystone, siltstone, or shale; used locally as building stone, although rarely produced commercially.
References in periodicals archive ?
Unit Gh-6-2.5 m of bedded limestone intercalating with argillites. Individual beds of limestone 0.25-0.35 m thick are separated by beds of argillite 0.10-0.25 m thick.
Cabrerac, "Investigation of the damage induced by desiccation and heating of Tournemire argillites using digital image correlation," International Journal of Rock Mechanics and Mining Science, vol.
Su, "A study on the dynamic behavior of the Meuse/Haute-Marne argillite," Physics and Chemistry of the Earth, vol.
The mineralogical characterization of the rocks biotite, syenite and argillite, with identification of their respective minerals, is described below (Figure 1).
Lower Upper Recent Lithic material (C1) (C2) (C3) NA1 Total Quartz 130 1421 16 116 1683 Rhyolite 161 860 3 53 1077 Chert 389 491 2 52 934 Chalcedony 289 452 0 35 776 Argillite 116 63 2 29 210 Basalt 84 34 0 3 121 Obsidian 1 86 1 5 93 Other 6 55 0 4 65 MCS 14 22 1 6 43 Quartz crystal 2 24 0 0 26 Total 1192 3508 25 303 5028 (1) NA = not assigned.
Poroelastic parameters of Meuse/Haute Marne argillites: effect of loading and saturation states, Applied Clay Science 26(1-4): 359-366.
Locally these conglomerate masses are separated by evaporite rocks (or solution-collapse breccia) and argillite. North of the fault through Arichat (Fig.
Reddish argillite and siltic interbeds can be found as imprinting a parallel lamination-type structure (Fig.
Just at this point, when the market of outside things is sinking connective tissues deep in local logic, Daxhiigang (Charles Edenshaw), a skilled carver of wood and argillite, nephew of master carver and chief Gwaayang Gwanhlin (Albert Edward Edenshaw), finds a new market for his world of miniature productions.
The deposit also contains a fair amount of argillite, a lighter form of trap rock which is permitted for mining as well."
In the klint escarpment radioactive graptolite argillite (Dictyonema shale) and obolus phosphorite crop out.