- Ogof Hen and Rhod
Uchaf are
formed by
sedimentary rocks, the mica-rich
Lingula Flags and the
sandstones and
mudstones of the Ogof Hen Formation. The rock...
-
Palaeozoic origin. Llechau-uchaf is
formed from the late
Cambrian '
Lingula Flags'
whilst Carreg-trai is
formed from
Ordovician acid
tuffs of the Llanrian...
- the same year
published a
paper on some
Additional Fossils from the
Lingula-
Flags. in
which he
named several trilobite species that were subsequently...
-
following sequence has been
established (youngest/uppermost at top):
Lingula Flags Menevian Group Solva Group Caerfai Group Caerbwdy Sandstone Caerfai...
-
Volume 19, pp. 37-42. SALTER, J. W. 1864: On some new
fossils from the
Lingula-
flags of Wales.
Quarterly Journal of the
Geological Society of London, 20...
-
Volume 19, pp. 37 - 42. SALTER, J. W. 1864: On some new
fossils from the
Lingula-
flags of Wales.
Quarterly Journal of the
Geological Society of London, 20...
- region, and here he
carefully investigated the
rocks and
fossils of the
Lingula Flags, his
observations being published in an
important and now
classic memoir...
-
Solva Type
Group Sub-units Upper, Middle,
Lower (informal)
Underlies Lingula Flags Overlies Solva Group Thickness about 230m
Lithology Primary mudstones...
-
Volume 19, pp. 37-42. SALTER, J. W. 1864: On some new
fossils from the
Lingula-
flags of Wales.
Quarterly Journal of the
Geological Society of London, 20...
-
Volume 19, pp. 37-42. SALTER, J. W. 1864: On some new
fossils from the
Lingula -
flags of Wales.
Quarterly Journal of the
Geological Society of London, 20...