The Usk Inlier is a
domed outcrop of rock strata of
Silurian age in
Monmouthshire in south-eastern
Wales. It is located in the countryside between the towns of
Caerleon and
Pontypool and the village of
Raglan. The longer axis of the dome or '
pericline', often referred to as the Usk Anticline, is aligned north–south. The
inlier is largely surrounded by a sequence of
Old Red Sandstone rocks of
Devonian age, though both these and the Silurian rocks are largely obscured by superficial deposits.[1][2]
References
^Aldridge, R.J.,
Siveter, David J., Siveter, Derek J., Lane, P.D., Palmer, D. & Woodcock, N.H. (2000) Geological Conservation Review Series vol 19, British Silurian Stratigraphy. Joint Nature Conservation Committee, Peterborough
