Sentence Examples

  • The principal rocks are andesites, but trachytes and basalts are also common.
  • The rocks are mainly basalts and andesites, together with trachytes and phonolites, and some of the basaltic flows are of enormous extent.
  • These rocks were followed by the outpouring of the extensive older basalts in the Great Valley of Victoria and on the highlands of eastern Victoria, and also in New South Wales and Queensland.
  • Its presence contributes to the dark colour of many basalts and other basic rocks, and may cause them to disturb the compass.
  • They are mostly true felspar basalts, but a few contain nepheline in addition to the felspar.