Cymdeithas Daeareg Gogledd Cymru
North Wales Geology Association
A to Z
of North Wales
Geology
These pages are intended to form a useful resource and to act as a showcase of North Walian geology. The topics will expand in time, and if there is pressure on the index we hope to change the topics around to maintain the interest of the site.

The active index will grow, and those with an interest in North Wales geology are invited to submit short, illustrated articles for publication. In this way we will broaden the scope and content of the site.

  • A - Ampyx
  • B - Basalt
  • C - Cordierite
  • D - Dyke
  • E - Eglwyseg
  • F - Fault
  • G - Granite
  • H - Hornfels
  • I - Ignimbrite
  • J - Joint
  • K - Kame Terrace
  • L - Limestone
  • M - Metamorphic
  • N - Nant Ffrancon
  • O - Orogeny
  • P - Pillow Lava
  • Q - Quarry
  • R - Rhyolite
  • S - Serpentinite
  • T - Till
  • U - Uranium
  • V - Varve
  • W - Westphalian
  • X - Xenolith
  • Y - Ynys Mon
  • Z - Zechstein