Plutonistn.

1799 R. Kirwan Geol. Ess. 336 It is in vain..that volcanists; or rather plutonists, ascribe these slips, and the disorders that accompany them, to subterraneous eruptions.

1861 H. T. Buckle Hist. Civilisation Eng. (1871) III. v. 397 In the history of geology, the followers of Werner are known as Neptunists, and those of Hutton as Plutonists.

1882 A. Geikie Text-bk. Geol. iii. i. iv. §2. 298 In the geological contest..between the Neptunists and the Plutonists, the two great battle cries were, on the one side, Water, on the other, Fire.

1925 J. Park Text-bk. Geol. (ed. 2) ii. 16 Hutton..considered crustal movements as due to extreme heat and expansion supplemented by volcanic disturbance and earthquakes. His views found many disciples and formed the basis of the theses of the school of Vulcanists or Plutonists.

1965 A. Holmes Princ. Physical Geol. (rev. ed.) v. 98 The Plutonists insisted that granite, as well as basalt, had crystallised from a molten state.

1999 H. Sigurdsson Melting Earth xi. 149 The Plutonists proposed a deep-seated origin for magma..and suggested a heat source much further down than the generally accepted conflagration of combustible matter at shallow depths in the crust as proposed by the Volcanists.