On the Classification and Nomenclature of the Lower Palæozoic Rocks of England and Wales

  title={On the Classification and Nomenclature of the Lower Pal{\ae}ozoic Rocks of England and Wales},
  journal={Quarterly Journal of the Geological Society of London},
  pages={136 - 168}
  • Sedgwick
  • Published 1 February 1852
  • Geology
  • Quarterly Journal of the Geological Society of London
In a former paper, of which this is a continuation, I endeavoured to ascertain the geological place of some groups of slate-rocks which are seen in certain parts of Westmoreland and Yorkshire near the base of the carboniferous limestone; and I endeavoured to show that the several groups which appeared on one or more of the sections were the equivalents, respectively, of the Coniston limestone, the Coniston flagstone, the Coniston grits, and the Ireleth slates, &c. These equivalents are well… 
The stratigraphy of the Bala district, Merionethshire
About 45 square miles of Ordovician and Silurian rocks exposed around the town of Bala have been mapped and their brachiopodtrilobite faunas studied in order to revise the stratigraphy of the Bala
Overview and biostratigraphy
Abstract Excellent coastal exposures of strongly folded and faulted Cambrian rocks occur around the St David's Peninsula of SW Wales. The best sections occur in the St David's Anticline, in the
SUMMARY The Mawddach Group is a new name for the rocks of late St. David’s to Tremadoc age in the Harlech Dome, previously called Menevian Beds, Lingula Flags and Tremadoc Slates. It follows
The Archaean Controversy in Britain: Part III—The rocks of Anglesey and Caernarvonshire
Summary A detailed account is given of the development of the Archaean Controversy in Caernarvonshire and Anglesey. Sedgwick had found no base for his Cambrian in North Wales, but had intimated that
A re‐examination of the type Arenig Series
The stratotypc of the Arenig Series (Ordovician System) and its boundaries are critically re-examined. The lithostratigraphy and biostratigraphy of the Tremadoc, Arenig, and Llanvirn age rocks at
Definition of the Tremadoc Series and the series of the Ordovician System in Britain
Abstract The Tremadoc Series and series of the Ordovician System are widely used in international correlations, and this review explains and summarizes how the base of each of these series is
The Murchison–Sedgwick controversy
  • J. Thackray
  • Geology
    Journal of the Geological Society
  • 1976
By the year 1839 Murchison had mapped and described the four groups that made up his Silurian System, defining each on the basis of fossils he had collected during five years fieldwork in South Wales
The Geology of the Country around Mynydd Rhiw and Sarn, South-Western Lleyn, Carnarvonshire
  • C. A. Matley
  • Geology
    Quarterly Journal of the Geological Society of London
  • 1932
I. Introduction In a recent communication to this Society (Matley, 1928) I showed that the Pre-Cambrian Complex of south-western Lleyn is separated from the Palæozoic region to the east of it by the
The faunal stratigraphy of the Kirkby Moor Flags of the type area near Kendal, Westmorland
The rocks generally referred to the Kirkby Moor Flags have been mapped in the Kendal area, roughly bounded by Underbarrow, Sedbergh and Kirkby Lonsdale. The succession is divided into four units: the
Letters concerning the Cambrian-Silurian controversy of 1852
  • G. Y. Craig
  • History
    Journal of the Geological Society
  • 1971
Sir Roderick Impy Murchison died 100 years ago. One of the last political acts of his busy life was to provide an endowment of £6,000 to the University of Edinburgh in 1870 so that a Chair of Geology