Sentence Examples


  • The rocks on the verge of the Kisumu province of East Africa are mainly volcanic (basalt, tuff, lava, kenyte).
  • In the Rudolf province there and are the basalt, lava, tuff and kenyte of the volcanic mineralogy.
  • Tuff and travertine are calcareous deposits found in volcanic districts.
  • 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.
  • (6) South Sumatra, so far as known, presents everywhere in its valleys the same character as that of the Batang Toru, Batang Gadis, Sumpur, &c. They also are closed in on the north and south by volcanoes "which have here produced similar masses of tuff, with lakes and rivers of the same formation as in the north.
 

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