Sentence Examples

  • Westward to Houston and southward to about 32° 48' on the Alabama boundary and occupying a much larger area than the other Cretaceous formations, is the Selma chalk, called "Rotten Limestone" by Hilgard; it is made up of a material of great uniformity, - a soft chalky rock, white or pale blue, composed chiefly of tenacious clay, and white carbonate of lime in minute crystals.
  • On the island of Andros there is an extremely fine white marl almost resembling a chalky ooze.
  • Therein two eggs, with white, chalky shells, are commonly laid.
  • It includes chalky limestones, siliceous earths, red clay, and, at the top, a layer of mudstone composed mainly of volcanic dust.
  • Within a recent geological period, central Aragon was undoubtedly submerged by the sea, and the parched chalky soil remains saturated with salt, while many of the smaller streams run brackish.

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