Geol. Also fakes. (See quots.).
[1808–79. Jamieson, Faik, a stratum or layer of stone in the quarry.]
1865. D. Page, Handbk. Geol. Terms. Faikes or Fakes, a Scotch miner’s term for fissile sandy shales, or shaly sandstones. Ibid. (1876), Adv. Text-bk. Geol., v. 92. Faikes, a thin-bedded shaly sandstone of irregular composition.
1882. Geikie, Text-bk. Geol., II. II. § 6. 158. Micaceous sandstone—a rock so full of mica-flakes that it readily splits into thin laminae…. This rock is called ‘fakes’ in Scotland.
