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I.—On the Structure and Organisms of the Lower Limestone Shales, Carboniferous Limestone and Upper Limestones of the Forest of Dean

Published online by Cambridge University Press:  01 May 2009

Edward Wethered
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Extract

Sir Andrew Ramsay has described the Coal-fields of the Forest of Dean, Somersetshire, and Bristol as outliers of the great Coal-fields of South Wales; there is, however, a marked thinning out in the thickness of the Carboniferous rock in the Forest of Dean as compared with the development of those rocks in South Wales and Bristol. At Clifton, near Bristol, the total thickness of the Carboniferous Limestone is about 2900 feet, at the northern end of the Forest of Dean Coal-field it is about 600 feet.

Type
Original Articles
Information
Geological Magazine , Volume 3 , Issue 12 , December 1886 , pp. 529 - 540
Copyright
Copyright © Cambridge University Press 1886

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References

page 529 note 1 Physical Geology and Geography of Great Britain, fifth edition, pp. 34, 35. Also, Mem. Geol. Survey, vol. i. p. 303.

page 529 note 2 Quart. Journ. Geol. Soc. vol. xxxiii. p. 615, 1877.

page 530 note 1 Proc. Cotteswold Club, 1866.

page 530 note 2 Quart. Journ. Geol. Soc. vol. xxxix. p. 212, 1883Google Scholar.

page 530 note 3 I put the Upper Limestone at 116 feet, but it is impossible to measure the thickness accurately at present. The Wilderness Portland Cement Company, however, is making a cutting, near Mitcheldean, with the object of ascertaining the thickness, as the limestone produces a good cement.

page 530 note 4 “On the Occurrence of Spores of Plants in the Lower Limestone Shales of the Forest of Dean,” Proc. Cotteswold Club, 1883—1884, pp. 168—173.

page 531 note 1 Ann. Mag. Nat. Hist. vol. viii. 3rd series, p. 487.

page 533 note 1 Challenger Report, Zoology, on the Ostracoda, p. 1.

page 533 note 2 Geol. Mag. 1886, Dec. III. Vol. III. pp. 248—253Google Scholar.

page 534 note 1 “Crinoidea, Miller's,” 1821, Rhodocrinites, plate 2, figs. 17, 18, 19, p. 107Google Scholar.

page 538 note 1 Quart. Journ. Geol. Soc. Proc. 1879, vol. xxxv. p. 87Google Scholar.

page 538 note 2 Quart. Journ. Geol. Soc. vol. xv. p. 86.

page 538 note 3 Quart. Journ. Geol. Soc. vol. xv. p. 103.

page 539 note 1 Corals and Coral Islands, 1872, pp. 356–357.

page 540 note 1 Quart. Journ. Geol. Soc. Proc. 1879, vol. xxxv. p. 73Google Scholar.