chert
noun
a compact rock consisting essentially of microcrystalline quartz.
cherty
-
a word derived from
chert.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Then it winds its way down and around the cherty limestone, to the top of the cross-bedded sandstone, down which zigzags and steps lead one to the spring itself.
From The Grand Canyon of Arizona; how to see it by George Wharton James
The topmost is the cherty limestone, the layers of which lead the eye to the crossbedded sandstone, a creamy buff in color, and composed of a soft, sugary sand.
From The Grand Canyon of Arizona; how to see it by George Wharton James
The lower is the cross-bedded sandstone, and the upper the cherty limestone.
From The Grand Canyon of Arizona; how to see it by George Wharton James
A whitish cherty limestone, with nodules of bluish argillaceous limestone. 6th.
From Geological Observations on South America by Charles Darwin
Descending into a valley with a dry creek fifteen yards wide, the rocks on the south-east slope cherty limestone alternating with thin beds of shale, the strata dipping 20 degrees to 30 degrees west.
From Journals of Australian Explorations by Augustus Charles Gregory
