Hostname: page-component-7bb8b95d7b-lvwk9 Total loading time: 0 Render date: 2024-09-13T22:24:50.597Z Has data issue: false hasContentIssue false
  • English
  • Français

The composite dike at Brockhill, Worcestershire1 (With Plate XXIII.)

Published online by Cambridge University Press:  14 March 2018

J. H. Taylor
J. H. Taylor*
Affiliation:
Geological Survey of Great Britain
Get access Rights & Permissions [Opens in a new window]

Extract

At Brockhill in Worcestershire, some 11 miles west of Droitwieh, in the valley of the river Teme, a small dike of igneous rock is intruded into the red marls and sandstones of the Downtonian Series.

The dike was figured and described by Phillips in 1848. On the Old Series one-inch Sheet 55 N.E. it was indicated as having a very limited outcrop on the eastern side of the river Teme; but a report of an excursion to Brockhill in 1874 records the presence of igneous rock on the opposite bank. The intrusion was examined during the resurvey on the six-inch scale of the New Series one-inch map, Sheet 182 (Droitwich), and is of interest both on account of its petrographic character and its remoteness from other igneous rocks. It has recently been traced by magnetic methods for a distance of over three-quarters of a mile.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 25 , Issue 169 , June 1940 , pp. 538 - 549
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1940

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

1

Published by permission of the Director, Geological Survey of Great Britain.

References

page 538 note 2 Phillips, J., The Malvern Hills, compared with the Palaeozoic districts of Abberley, Woolhope, May Hill, Tortworth, and Usk. Mem. Geol. Surv. Great Britain, 1848, vol. 2, part 1, pp. 155–158.Google Scholar

page 538 note 3 Trans. Worcestershire Nat. Club, 1874, vol. 1, pp. 211-212.

page 538 note 4 Hallimond, A. F., Magnetic observations on the Brockhill dyke. Bull Geol. Surv. Great Britain, 1939, no. 2, pp. 85–92.Google Scholar

page 541 note 1 These numbers refer in all cases to the English series of microscope slides at the Geological Survey Office, Exhibition Road, South Kensington, London.Google Scholar

page 544 note 1 Lacroix, A., Les enclaves des roches volcaniques. Macon, 1893, pp. 168–169.Google Scholar

page 544 note 2 Campbell, R., Day, T. C., and Stenhouse, A. G., The Braefoot outer sill, Fife. Trans. Edinburgh Geol. Soc., 1932, vol. 12, pp. 360–361; 1934, vol. 13, pp. 166-167.Google Scholar

page 544 note 3 Thomas, H. H. in Tertiary and post-Tertiary geology of Mull, Loch Aline and Oban. Mem. Geol. Surv. Scotland, 1924, pp. 198, 274.Google Scholar

page 544 note 4 Bowen, N. L., Geologic thermometry. Chapter X in The laboratory investigation of ores (edited by Fairbanks, E. E.). New York, 1928, pp. 180–184.Google Scholar

page 544 note 5 Larsen, E. S., The temperature of magmas. Amer. Min., 1929, vol. 14, pp. 86–88.Google Scholar

page 545 note 1 Pocock, R. W., The age of the Midland basalts. Quart. Jour. Geol. Soc. London, 1931, vol 87, pp. 1–12. See also Shrewsbury district. Mem. Geol. Surv. Great Britain, 1938, appendix VI, p. 281.CrossRefGoogle Scholar

page 546 note 1 Reynolds, S. H., The basic intrusion of Bartestree. Quart. Jour. Geol. Soc. London, 1908, vol 64, pp. 501–511 CrossRefGoogle Scholar