Aran Volcanic Group
The Aran Volcanic Group is a geological group in Wales. It preserves fossils dated to the Ordovician period. It is laterally equivalent with sedimentary rocks of the Ogwen Group, parts of which are interbedded with it.
The Aran Volcanic Group is a geological group in Wales. It preserves fossils dated to the Ordovician period. It is laterally equivalent with sedimentary rocks of the Ogwen Group, parts of which are interbedded with it.