ON A BORING IN THE MILLSTONE GRIT SERIES AT HALLAM HEAD, SHEFFIELD

Abstract

In the summer of 1938, a boring was made to supply the Hallamshire Golf Course with water. This borehole is situated in the disused Barncliffe Quarry adjoining Redmires Road at Hallam Head, 600 yards west of the Hallamshire Golf Club House. A small pump-house now stands a yard or two from the borehole. The boring was commenced at approximately 925 ft. O.D. The succession passed through is shown in Fig. 1. The lowest beds (145 to 200 ft.) are mainly soft, dark grey shales and mudstones, for the most part faintly banded. Pyrites and ironstone nodules are abundant at various horizons. Bands, an inch or two thick, of calcareous siltstone enclosing plant remains occur near the base of these beds. Goniatites, Lingula and Pterinopecten occur at certain horizons between 155 and 170 ft. and between 184 and 200 ft. Selected specimens were sent to Mr. W. S. Bisat who very kindly sent the following report:— “At 159 ft. Reticuloceras reticulatum mut. γ and an unknown species, possibly Gastrioceras sigma . At 165 ft. Reticuloceras reticulatum mut. γ , Gastrioceras sigma . At 167 ft. Gastrioceras sp. At 184 ft. to 187 ft. Reticuloceras reticulatum mut. γ , Gastrioceras sp. At 188 ft. Gastrioceras lineatum (?) At 190 ft. Reticuloceras reticulatum mut. γ of early type I cannot say if this last form is the same as W. B. Wright’s early mut. γ as I have no comparison material, and your material is not very well preserved, but there is a considerable difference between the ...