194 
A NEW BORING IN THE VALE OF PICKERING. 
W. MILLHOUSE, C.E., 
Scarborough. 
ANYTHING which adds to the History of the Geological forma- 
tion of Pickering Vale is of interest to Yorkshire Geologists, 
and an account of the most recent boring in the Vale may not 
be out of place. 
In the Autumn of 1910 an attempt was made to obtain 
water at the Derwentdale Farm, the property of the Earl of 
Londesborough. The site of the boring is about 1} miles south 
of the boring at the Irton Water Works, and thus became of 
considerable interest both from a geological and a hydro- 
geological standpoint. 
The great East and West Fault, passing through Ebberston 
and Brompton, on the south side of which the Kimeridge Clay 
had been proved to upwards of 300 feet, is not known east 
of Brompton, and this Derwentdale Boring promised to throw 
some light on the matter. The debris from the boring was care- 
fully preserved by Mr. R. S. Blaylock, the Earl’s agent, and 
Mr. Hy. Preston, F.G.S., very kindly assisted in identifying and 
describing the specimens, besides twice visiting the boring during 
its progress. The full details of the boring are as follows :— 
DERWENTDALE FARM. 
In the Parish of Seamer. 6” Ordnance Sheet, No. 93. 
go‘oo ft. above Ordnance Datum. 
Details of Strata, etc., passed through in sinking a 3” Bore- 
hole for water supply in the Vale of Pickering. 
November, Ig10. 
Thickness. tot ere 
Bte ins. ins. 
‘ Dark blue warp .. 3. EQ = a —- 
Gravel, the larger stones (3” 
MODERN to 4”) being variously 
ALLUVIUM. coloured sandstones, 
Igneous rocks, etc., and a 
fragment of fossil (Ostrea) 27 — 40 — 
Dark reddish brown sandy 
silt 6 — 46 — 
Sand and grav vel, sand being 
very Sioce angular quartz 
rains, =. 13 — 59 — 
ba er coloured mae with 
SILTS: a dark brown silty warp 
LAKE very few grains of sand I — 60 — 
50a ae 
Soft reddish grey ditto 6 — 7 ae 
Soft light brown silt 4 — 5 — 
Very fine grey silt . 10 — 85 - — 
Dark brown fine silt cee S Og e a= 
Fine clayey silt, dark red- 
dish brown .. Ir — 106 — 
Naturalist 
