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IV.—Note on a New Fossiliferous Limestone in the Upper Culm Measures of West Devon

Published online by Cambridge University Press:  01 May 2009

Inkermann Rogers  and
E. A. Newell Arber
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Extract

At the present time we are only fully acquainted with the geology and palæontology of one division of the great Carboniferous Series developed in Devon and the adjacent counties, the Lower Culm Measures. This division, while representing only a small fraction of thickness of the Culm Measures as a whole, is of special interest both lithologically and palæontologically, as was shown by Messrs. Hinde & Fox in an admirable paper published in 1895. Above the limestones and cherts of the Lower Culm Measures lie the great thickness of sandstones and shales which constitute the Upper of the twofold primary division of these rocks instituted by Sedgwick & Murchison in 1840. The Upper Culm Measures occupy an area of more than 1,000 square miles, and are of Upper Carboniferous age.

With the exception of the researches of the late Townshend Hall, and more recently of Mr. Ussher, comparatively little has been added to our knowledge of these beds since the days of Sedgwick & Murchison, and of De la Beche. An inquiry with regard to the palæontology, and more especially the palæobotany, of these rocks has, however, been in progress for some time past, with the result that sufficient material has been gathered for a contribution to the fossil flora of the Upper Carboniferous rocks of Devon, which, it is hoped will be published shortly by one of us. While examining the sandstones and shales of this series, other discoveries have been made, incidental to the work of collection of plant-remains.

Type
Original Articles
Information
Geological Magazine , Volume 1 , Issue 7 , July 1904 , pp. 305 - 308
Copyright
Copyright © Cambridge University Press 1904

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References

page 305 note 1 Hinde, & Fox, : Quart. Journ. Geol. Soc, vol. li (1895), p. 609.CrossRefGoogle Scholar

page 305 note 2 Sedgwick, & Murchison, : Trans. Geol. Soc., ser. II, vol. v (1840), p. 633.CrossRefGoogle Scholar

page 305 note 3 Ussher, : Proc. Somerset Arch, and Nat. Hist. Soc., vol. xxxviii (1892), p. 121.Google Scholar

page 305 note 4 Hall, : Geol. Mag., Dec. II, Vol. III (1876), p. 410.CrossRefGoogle Scholar

page 306 note 1 Ussher, : Trans. Inst. Min. Engineers, vol. xx (1901), p. 362Google Scholar; see also the excellent geological map of Devonshire on pl. xvi.

page 306 note 2 Conybeare, : Trans. Geol. Soc., ser. I, vol. ii (1814), p. 495.CrossRefGoogle Scholar

page 306 note 3 Pengelly, : Trans, Devon Assoc., vol. xvii (1885), p. 425.Google Scholar

page 306 note 4 The Western Coast Section has not as yet been explored, but calcareous nodules have been found a short distance to the south of Hartland Point.

page 306 note 5 The limestone was discovered by Mr. Rogers in August, 1903, when searching for plant-remains on my behalf.—E. A. N. A.

page 307 note 1 Registered numbars C. 1613 and C. 1613a, sec Hinde & Fox, ib,, p. 655, table ii.

page 308 note 1 Registered numbers P. 6100, P. 5379, and P. 6268.

page 308 note 2 Ward, : Geol. Mag., Vol. II (1865), pp. 234 and 286.CrossRefGoogle Scholar

page 308 note 3 Hull, & Green, , Trans. Manch. Geol. Soc, vol. iii (1862), p. 348Google Scholar; and Hull, & Salter, , “Geology of the Country round Oldham,” 1864, p. 64.Google Scholar