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XXVII.—The Old Red Sandstone of Shetland. Part II. North-Western Area

Published online by Cambridge University Press:  06 July 2012

T. M. Finlay
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Extract

In a previous communication an account was given of the sedimentary series exposed along the eastern coast-line of the Shetlands from Rova Head to Sumburgh Head. Fossil evidence was adduced which enabled the position of these beds in the Old Red System to be fixed more definitely than had hitherto been the case; they were shown to be partly of Middle, partly of Upper Old Red Sandstone age, the base of the Rova Head Conglomerate being taken as the dividing line. Since the publication of that paper additional fossils have to be recorded. Examination of the numerous specimens of the Microbrachius from the fish-beds of Shetland fails to reveal any specific distinction between that form and Microbrachius dicki Traq. occurring in the John o' Groat's Sandstone Group, and the Eday Sandstones; it is therefore an important addition to the chain of evidence linking up the Shetland horizon with those of Orkney and the Mainland. An additional record of little stratigraphical value is that of Coccosteus (sp. indet.), a single plate of which was found by Professor W. H. Lang at a horizon slightly below the fish-bed at Shingly Geo, Dunrossness.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 56 , Issue 3 , 1931 , pp. 671 - 694
Copyright
Copyright © Royal Society of Edinburgh 1931

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References

1. Bailey, E. B., and Maufe, H. B., “The Geology of Ben Nevis and Glencoe,” Mem. Geol. Surv. Scot. (1916), p. 180.Google Scholar
2. Finlay, T. M., “The Old Red Sandstone of Shetland—South-Eastern Area,” Trans. Roy. Soc. Edin., vol. liv (1926), p. 567.Google Scholar
3. Flett, J. S. Sir, “The Submarine Contours of the Orkneys,” Trans. Geol. Soc. Edin., vol. xi, pt. i, p. 42.Google Scholar
4. Flett, J. S. Sir, “On a Hypersthene Andesite from Dumyat (Ochils),” Trans. Geol. Soc. Edin., vol. vii, p. 290.Google Scholar
5. Flett, J. S. Sir, “On Phenocrysts of Micropegmatite,” Trans. Geol. Soc. Edin., vol. vii, p. 482.Google Scholar
6. Geikie, A. Sir, “The Old Red Sandstone of Western Europe,” Trans. Roy. Soc. Edin., vol. xxviii (1878), p. 414.Google Scholar
7. Hibbert, S., “A Description of the Shetland Islands” (1822), p. 160.Google Scholar
8. Iddings, J. P., “Obsidian Cliff, Yellowstone National Park,” 7th Ann. Rep. U.S. Geol. Surv. (1885–1886), p. 249.Google Scholar
9. Jehu, T. J., and Craig, R. M., “Geology of the Outer Hebrides. Part I. The Barra Isles,” Trans. Roy. Soc. Edin., vol. liii (1923), p. 430.Google Scholar
10. Lewis, F. J., “The Plant Remains in the Scottish Peat Mosses,” Trans. Roy. Soc. Edin., vol. xlvi (1907), p. 49.Google Scholar
11. Peach, B. N., and Horne, J., “The Glaciation of the Shetland Isles,” Quart. Journ. Geol. Soc, vol. xxxv (1879), p. 778.CrossRefGoogle Scholar
12. Peach, B. N., and Horne, J., “On the Old Red Volcanic Rocks of Shetland,” Trans. Roy. Soc. Edin., vol. xxxii (1884), p. 359.CrossRefGoogle Scholar
13. Peach, B. N., and Horne, J., “The Geology of Shetland,” in Tudor's The Orkneys and Shetlands (1883).Google Scholar
14. Peach, B. N., and Flett, J. S. Sir, “Geology of the Neighbourhood of Edinburgh,” Mem. Geol. Surv. Scot. (1910).Google Scholar
15. Peach, C. W., “A List of Fossil Plants Collected in Shetland,” Quart. Journ. Geol. Soc, vol. xxxv (1879), p. 811.Google Scholar
16. Phillips, F. C., “Notes on a Riebeckite-bearing Rock from the Shetlands,” Geol. Mag. (1926), p. 72.Google Scholar
17. Teall, J. J. H. Sir, “Notes on Cheviot Andesites and Porphyrites,” Geol. Mag. (1883), p. 100.Google Scholar
18. Teall, J. J. H., “On some Quartz Felsites and Augite Granite from the Cheviot District,” Geol. Mag. (1885), p. 106.Google Scholar