A magnetic survey of the aureole around the Cheviot granite

Publisher Website
Google Scholar
Abstract
Synopsis: A total field intensity map of the Cheviot granite stock and its aureole has been constructed from a ground-level proton magnetometer survey. Measurements on rock specimens, together with computer modelling, show that: (1) The andesitic lava of the aureole and the marginal variety of granite have high susceptibilities, but the unmetamorphosed andesite and rhyolite, and the granophyric and Standrop varieties of granite have lower susceptibilities; (2) The junction between the metamorphosed andesites and the underlying marginal granite forms a dome-like surface; (3) Some vertical movement on the Breamish fault and horizontal movement along the Harthope fault has occurred; (4) There are many xenoliths of metamorphosed andesite within the granite; (5) A shallow basin of granophyric and Standrop varieties is thought to lie within the central region of the granite stock; (6) The small negative anomaly over the Breamish fault may indicate that the marginal granite is only thin in that area; (7) The Biddlestone laccolith persists northward beneath the lava from Biddlestone quarry to the Breamish fault.

This publication has 10 references indexed in Scilit: