Sentence Examples

  • The rocks on the verge of the Kisumu province of East Africa are mainly volcanic (basalt, tuff, lava, kenyte).
  • Occasional beds of tuff are intercalated among these lavas, and likewise seams of fine clay or shale which have preserved the remains of numerous land-plants.
  • Tuff and travertine are calcareous deposits found in volcanic districts.
  • In the Rudolf province there and are the basalt, lava, tuff and kenyte of the volcanic mineralogy.
  • In the middle of Iceland, where the geological foundation is tuff and breccias, large areas are buried under ancient outflows of lava, which bear evidences of glacial scratching.

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