Abstract

14 March 1973 Ordinary General Meeting held at the National Museum of Wales, Cardiff, arranged by Dr D. A. Bassett.

Welsh Geological Studies

Morning Session with short talks and exhibits.

The Silurian Correlation Chart: Toward a supplement. C. H. Holland.

The Hirnantia fauna. A. D. Wright.

Ordovician fossils from boreholes in England. A. W. A. Rushton.

The work of the Institute of Geological Sciences North Wales. M. F. Howells.

The Cambro-Ordovician boundary: a suggested compromise based on the sequence in the type district. P. Whitworth.

The Harlech Dome borehole. P. M. Allen.

Trinucleid morphology and relationships. C. Hughes & J. K. Ingham.A new 1 :25,000 geological map of the Leint- wardine-Ludlow area. C. H. Holland, J. Lawson, V. G. Walmsley, J. H. McD. Whitaker & B. J. Williams.

Basement control of Malvernoid and related structures within the Phanerozoic of S.E. Wales and the lower Severn area. J. W. Baker & R. A. Gayer.

Other exhibits included: Ordovician faunas from Czechoslovakia (M. G. Bassett); Ordovician faunas from Anglesey (D. E. B. Bates); The new 6-inch geological maps of the Newtown area (R. Cave); New fossil finds from the Cambrian of N.W. Scotland (J. W. Cowie); Silurian plants from Wales (Dianne Edwards and M. G. Bassett) ; The work of the I.G.S. in Snowdonia (M. F. HoweUs); Ordovician fossils from boreholes in England (A. W. A. Rushton); Silurian Beyrichiacean Ostracodes from Britain (David Siveter); Calymenid trilobites from Britain and Scandinavia (Derek Siveter) ; Further isolated graptolites fromthe Ordovician of Girvan

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