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The Carboniferous Outlier at Pen-Cerig-caich

Published online by Cambridge University Press:  01 May 2009

T. Neville George
T. Neville George
Affiliation:
Fellow of the University of Wales, St. John's College, Cambridge.
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Extract

The hill of Pen-Cerig-calch, reaching to a height of 2,300 feet, on the southern borders of the Black Mountains, lies about 2 miles north of Crickhowell, and about 4 miles from the nearest part of the main Carboniferous outcrop above Llangattwg. It first attracted the attention of Murchison. Since his time, apart from incidental references, it has not been examined in detail, and as it lies just outside the borders of the Geological Survey Sheet 232, it is not included in the description of the succession of that area given by the Survey officers. The recent revision of this memoir, which includes a discussion of the zonal sequence of the Carboniferous along the main outcrop, is completed, structurally, by the following description of the sequence at Pen-Cerig-caich.

Type
Original Articles
Information
Geological Magazine , Volume 65 , Issue 4 , April 1928 , pp. 162 - 168
Copyright
Copyright © Cambridge University Press 1928

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References

page 162 note 1 Murchison, R. I., Silurian System, 1839, p. 162.Google Scholar

page 162 note 2 “The Geology of the South Wales Coalfield. Part II. Abergavenny”: Mem. Geol. Surv., 2nd ed., 1927, p. 19.Google Scholar

page 164 note 1 Silurian System, op. cit., pp. 172, 588, 601.

page 164 note 2 Abergavenny, op. cit., p. 18.

page 165 note 1 George, T. N., “The Carboniferous Limestone (Avonian) Succession of a Portion of the North Crop of the South Wales Coaffield”: Q.J.G.S., 1927, p. 64.Google Scholar

page 166 note 1 Silurian System, op. cit., p. 163.