10 The Millstone Grits West of Htiddersfield. 



I suspect a marine band in the shales at the top of the 

 20 ft.+ of sandstone rock, but could find no exposure. En- 

 deavour should be made by local workers to trace an exposure, 

 as the horizon is the lowest in the neighbourhood and might 

 yield important zonal evidence. 



(3) There is a large disused quarry on the south side of 

 the Huddersfield-Marsden road, near Linthwaite ; well seen 

 from the railway. It gives a magnificent section, approxi- 

 mately as under : — 



Shales and sandstone bands 40 ft. 



Dark shales ... ... 40 ft. 



Clay shales, with Glyphio-\ /Seen on floor of quarry 



ceras reticulatum, Pterino-\ near south-east face. 



pecten papyraceus, Posi-Y 6 ft. -! Compare with band in 



doniella Icsvis 1 i Rake Dike, Holme, at 



Rock in bands ... ... 12 ft. 



Solid sandstone rock 



1,250 ft. O.D. 



There is a fine shale scarp formed by the River Colne a 

 little further west and immediately below the Huddersfield- 

 Marsden high road. This shews about 50 ft. of blue sandy 

 shales apparently unfossiliferous. 



In the Meltham-Marsden area we therefore now have the 

 following definite succession, in descending order : — ■ 



(i) Shales under Rough Rock with Gasirioceras listen. 



Rock A of Survey and underlying sandy shales. 



(2) Clay shales with Glyphioceras biliugiie. 



Measures. 



(3) Lamellibranch band seen in quarry on Holt Head-Slaith- 

 waite road at 775 ft. O.D. 



Measures. 

 {4) Reticulatum band — Wessenden Old Reservoir, above water- 

 fall. 

 Rock. 



(5) Lingula and lamellibranch band — Wessenden Old Reservoir, 

 foot of waterfall. 



Measures. 



(6) Lamellibranch band — Blakcley Reservoir Embankment. 



There are also the following exposures not yet definitely 

 fixed in the above sequence : — 



[a) The nodular reticulatum band of Slaithwaite and 

 Oxhouse. This is definitely below (3). It may be between 

 (3) and (4) or equal to (4). 



[b) The reticulatum band in the Linthwaite quarry. This 

 must be below (2) and may be between (2) and (4) or equal to 

 (4)- 



[c) The Lingula band at Butterley Reservoir may be equal 

 to (5) or between (5) and (6). 



Naturalist 



