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III.—On Borings at Cotefield Close and Sheraton, Co. Durham (Permian and Coal-measures)

Published online by Cambridge University Press:  01 May 2009

David Woolacott
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Extract

During the last year I have examined, through the kindness of Mr. E. O. Forster Brown, Min. Eng., borings that have been put down by Messrs. Bell Bros., at Cotefield Close and Sheraton, near the southern limits of the Northumberland and Durham Coalfield. They are situated about 5 miles west of Hartlepool, and about 8½ miles east of the Permian escarpment at Ferryhill. The boring at Cotefield Close lies about 1½ miles east of Hurworth Burn station, and about the same distance south of that at Sheraton. The details of the former are from my own notes which were taken when the hole was finished, but those of the Sheraton cores are by Dr. C. T. Trechmann, who examined them as they were brought up from time to time, it thus being possible to obtain a very full record. I also desire to thank this geologist for some notes on the Sheraton boring which are incorporated in this paper. Both of the boreholes passed through the superficial deposits and Permian strata into the Coal-measures, but as that at Sheraton has just entered the lastnamed series and is not yet completed, the remarks on the Carboniferous rocks refer only to the strata pierced at Cotefield Close. The examination of these cores adds to our knowledge of the Permian, confirming some of the points that Dr. Trechmann and I have enunciated in previous papers dealing with the Magnesian Limestone.

Type
Original Articles
Information
Geological Magazine , Volume 6 , Issue 4 , April 1919 , pp. 163 - 170
Copyright
Copyright © Cambridge University Press 1919

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References

page 163 note 1 Sections of The Coal Seams of Northumberland and Durham Coal-field, by Simpson, J. B., 1877Google Scholar; section in Lebour's Geology of Northumberland and Durham, 1886, etc.

page 165 note 1 Woolacott, , “Stratigraphy and Tectonics of the Permian of Durham (Northern Area)”: Proc. Univ. Durham Phil. Soc., vol. iv, pt. v, p. 268, 1911–1912Google Scholar. Trechmann, , “On the Lithology of certain Durham Limestones”: Q.J.G.S., vol. lxx, p. 260, 1914Google Scholar.

page 165 note 2 Q.J.G.S., vol. lxix, p. 213, 1913Google Scholar.

page 166 note 1 A. D. N. Bain, B.Sc., has analysed these rocks and supplied me with the following figures:—

page 167 note 1 e.g. the thick irregular coarse dolomitic breccias occurring in the calcareous limestone of Raisby Hill Quarry.

page 167 note 2 The section of the Lower Limestone at Raisby Hill is:—

A coarse irregular dolomitic breccia occurs in the “Bluestone”.

page 167 note 3 The following analyses of these rocks have been forwarded to me by T. A. Saint, B.Sc., assistant quarry manager:—

page 167 note 4 [In an arenaceous limestone at the base of the Lower Limestone on Tynemouth Cliff, stems of Carboniferous Limestone crinoids occur.]

page 168 note 1 Kirkby, & Duff, , “Geology of Part of South Durham”: Nat. Hist. Trans. of Northumberland and Durham, vol. iv, pt. i, 1871Google Scholar.

page 169 note 1 Professor Lebour found this fossil along with other marine fossils in beds occupying a similar position to these at Whittonstall (Geol. Mag., 1878, p. 144).