bedded chert

bedded chert

[′bed·əd ‚chərt]
(petrology)
Chert of brittle, close-jointed, rhythmically layered character found over large areas in thick deposits, the usually even-bedded layers separated by partings of dark siliceous shale or by siderite layers.
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References in periodicals archive ?
Trace fossils of a Middle Ordovician pelagic deep-ocean bedded chert in southeastern Australia.
Outcrops of the latter formation on land contain nodular and bedded chert mined by Archaic Indians.
Hydrogen and oxygen isotope ratios in nodular and bedded cherts.