No CrossRef data available.
Published online by Cambridge University Press: 01 May 2009
It is now generally accepted that there is no essential difference between igneous intrusion and the deposition of the minerals which fill the deep veins. Both igneous rocks and deep veins were formed from magmatic material, their differences being due to successive differentiation and not to difference in origin.
page 225 note 1 Rastall The Geology of Metalliferous Deposits, 1923.
page 225 note 2 Spurr, The Ore Magmas, 1923.
page 225 note 3 Reported by J. H. Collins.Google Scholar
page 227 note 1 Davison, , “The Geology of Castle an Dinas and Belowda Beacon”: Proc. R.G.S.C., 1919.Google Scholar