The Picrite-Teschenite Sill of Lugar (Ayrshire)

  title={The Picrite-Teschenite Sill of Lugar (Ayrshire)},
  author={George Walter Tyrrell},
  journal={Quarterly Journal of the Geological Society of London},
  pages={131 - 84}
  • G. Tyrrell
  • Published 1 February 1916
  • Geology
  • Quarterly Journal of the Geological Society of London
I. Introduction. The association of teschenite and ultrabasic rocks (picrite and peridotite) in a single rock-body has now been established for several occurrences in the lowlands of Scotland. The Barnton occurrence, near Edinburgh, has been described by Sir Archibald Geikie,1 by Mr. J. Henderson & Mr. J. G. Goodchild, and by Mr. H. W. Monckton. At Blackburn, near Bathgate, occurs a picrite, which has been described by the first-named writer as a lava, but has recently been shown to be… 

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