The grass-covered Flint Hills are underlain by cherty limestone and shale.    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

Nonarable soils derived from cherty limestone dominate the Flint Hills (28).    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

The Ozark Highlands (39) are largely underlain by flat-lying, cherty limestone.    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

Ridges and hills are often capped by cherty gravels and veneered by thin loess.    From Wordnik.com.  [Ecoregions of Kentucky (EPA)] Reference

Sedimentary-derived soils may be stone free, not cherty as in neighboring regions.    From Wordnik.com.  [Ecoregions of Iowa and Missouri (EPA)] Reference

cherty soils predominate, although they are not as cherty as in surrounding hill regions.    From Wordnik.com.  [Ecoregions of Iowa and Missouri (EPA)] Reference

Bank and hillslope erosion has choked many channels and filled many pools with cherty gravel.    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

Its grass-covered, open, low hills, cuestas, and plains are underlain by cherty limestone and shale.    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

Upland soils tend to be cherty, droughty, low in fertility, and are mostly covered by mixed oak forests.    From Wordnik.com.  [Ecoregions of Kentucky (EPA)] Reference

In Oklahoma, Ecoregion 39 is a level to highly dissected plateau composed of flat-lying, cherty limestone.    From Wordnik.com.  [Ecoregions of Oklahoma (EPA)] Reference

The region encompasses most all of the outer areas of the generally non-cherty Ordovician limestone bedrock.    From Wordnik.com.  [Ecoregions of Tennessee (EPA)] Reference

Woodlands and oak-hickory forests blanket the area and are supported by the cherty, silty, moist, and acidic soils.    From Wordnik.com.  [Ecoregions of Kansas and Nebraska (EPA)] Reference

Soils are mostly derived from cherty carbonate rocks, with chert stone comprising about 20% to 60% of the soil mass.    From Wordnik.com.  [Ecoregions of Iowa and Missouri (EPA)] Reference

The region encompasses most of the area containing the Ordovician non-cherty limestone and calcareous shale bedrock.    From Wordnik.com.  [Ecoregions of Alabama and Georgia (EPA)] Reference

Shortleaf pine grows on the thin, cherty soils of steep slopes, and is more common than in Ecoregion 39a, 39c, and 39d.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference

The limestone, chert, siltstone, and shale is covered by soils that are cherty, acidic, and low to moderate in fertility.    From Wordnik.com.  [Ecoregions of Alabama and Georgia (EPA)] Reference

This region is characterized by rolling hills composed of shale and cherty limestone, rocky soils, and by humid, wet summers.    From Wordnik.com.  [Ecoregions of Kansas and Nebraska (EPA)] Reference

The higher hills and knobs are sometimes capped by the more cherty Mississippian-age Fort Payne Formation typical of the Highland Rim.    From Wordnik.com.  [Ecoregions of Alabama and Georgia (EPA)] Reference

Arenig age, their horizon being defined by graptolites occurring in cherty mudstones and black shales interleaved in lavas and agglomerates.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"] Reference

The Flint Hills is a region of rolling hills with relatively narrow steep valleys, and is composed of shale and cherty limestone with rocky soils.    From Wordnik.com.  [Ecoregions of the United States-Level III (EPA)] Reference

The Southern Limestone/Dolomite Valleys and Low Rolling Hills form a heterogeneous region composed predominantly of limestone and cherty dolomite.    From Wordnik.com.  [Ecoregions of Alabama and Georgia (EPA)] Reference

The forested White River Hills ecoregion is a highly dissected portion of the Salem Plateau that is underlain by cherty Ordovician dolomite and limestone.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference

The Dissected Springfield Plateau – Elk River Hills are underlain by cherty limestone of the Mississippian Boone Formation and contain many karst features.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference

Soils are often cherty and have developed from carbonate rocks or interbedded chert, sandstone, and shale; mesic Ultisols, Alfisols, and Mollisols are common.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference

Topography is mostly smooth to gently sloping plains, and soils, derived from loess and cherty limestone, tend to support more cropland than other Ozark regions.    From Wordnik.com.  [Ecoregions of Iowa and Missouri (EPA)] Reference

The Springfield Plateau ecoregion is a smooth to gently rolling plain underlain by Mississippian-age cherty limestone and is less dissected than most regions in the Ozarks.    From Wordnik.com.  [Ecoregions of Iowa and Missouri (EPA)] Reference

Ecoregion 39c is lithologically unlike another highly dissected portion of the Ozarks, Ecoregion 39b, where Mississippian cherty limestone of the Boone Formation predominates.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference

There are several other types of limestones (less common and of limited value) such as coral limestones, shell limestones, marl, cherty limestones and stalagmites and stalactites.    From Wordnik.com.  [1. General Information] Reference

The summits of these plateaus are of cherty limestone.    From Wordnik.com.  [Canyons of the Colorado] Reference

Hammer-stone, with conical points, made from a pebble of cherty sandstone.    From Wordnik.com.  [Illustrated Catalogue of a Portion of the Collections Made During the Field Season of 1881 Third Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1881-82, Government Printing Office, Washington, 1884, pages 427-510] Reference

Rudely shaped, of hard cherty rock, flat on the inner face, convex on the back.    From Wordnik.com.  [Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 307-428] Reference

This drilling mainly tested only one of three contiguous cherty-banded magnetite units.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference

There was the long line of cherty hills to the left, covered by a dark growth of stunted pines.    From Wordnik.com.  [The Young Mountaineers Short Stories] Reference

In Arizona chrysotile is found in veins in cherty limestone, associated with diabase intrusives.    From Wordnik.com.  [The Economic Aspect of Geology] Reference

Osnovnye cherty botanicheskoi geographii pustyn Evrasii Severnoi Africi, Moskow-Leningrad Izdatelstvo.    From Wordnik.com.  [Central Asian southern desert] Reference

The cold has lowered the creek's voice an octave or so; it gurgles deep sentiments of madrone leaves, cherty soil and redwoods.    From Wordnik.com.  [Coyote Crossing] Reference

"cherty tuff" now simply recognized as silicification proximal to epithermal veining in a steeper dipping system.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Pine is most common on steep, thin, cherty soils.    From Wordnik.com.  [Ecoregions of Arkansas (EPA)] Reference