It's called a Ring Dyke and the white rock is igneous in origin - formed during volcanic activity, rather than metamorphic like quartzite. This is a particularly fine example and unusual in being of white rock.Malcolm
It's called a Ring Dyke and the white rock is igneous in origin - formed during volcanic activity, rather than metamorphic like quartzite. This is a particularly fine example and unusual in being of white rock.
ReplyDeleteMalcolm