388 SPENCER : THE YOREDALE AND MILLSTONE GRIT ROCKS. 
The inclination of the strata from Hebden Bridge to Sowerby 
Bridge seems to be only very slight, but from Norland down 
to the Calder at West Yale it is more rapid. 
The wide vale of Todmorden has been scooped out of Yoredale 
strata, and a great thickness of shales and grits is exposed. At 
Eastwood a fault crosses the valley, and throws these strata below 
the level of the valley to the east, but they soon rise to the surface 
again and form the sides of the valley down to below^ Hebden 
Bridge Station. The Kinder Grit crowns the edges of the Calder 
valley from Eastwood down to Wood End, half-a-mile below 
Hebden Bridge Station, where it is thrown down to the east 
under the alluvium of the valley by the Wadsworth fault. Just 
east of the fault the section passes through the " Mytholmroyd 
moraine," and the sides of the valley are formed of Third Grits 
down to near Luddendenfoot Station. At this point the Kinder 
Grit is again brought to the surface by the Midgley fault, and 
may be seen forming the sides of the cutting below the station. The 
beds dip rapidly down to Cooper Mill where they form a synclinal 
axis due to an abrupt bend in the grit rocks, which have been 
thrust up in the form of a pyramid to a considerable height 
above the level of the river. The upper Kinder shales have a 
dip of 10'' on each side of this pyramid. There is a thin l)ed of 
coal in these shales, which along with the shales has been bent 
into a sharp angle. On the east side of the bend the shales and 
Kinder have been thrown down by a fault to the level of the 
valley, leaving three or four yards of shales adjoining the grit 
pyramid. 
This is the most easterly exposure of the Kinder Grit in 
Calderdale, and is a most interesting section. 
The Kinder gradually sinks below the surface and the over- 
lying shales form the valley bottom down to Sowerby Bridge, 
where the bed D of the Third Grits may be seen on the south 
side of the station and in the cutting east of it. This rock has 
two thin coals and a thick bed of galliard rock associated w^ith 
it, by means of which it can be traced from above Pecket Well 
