268 PROCEEDINGS OF THE GEOLOGICAL society: [ Mar. 8, 
proximity to the low coal-measures. The Bunter sandstein appears on 
the western side of Macclesfield at Alderley Edge. The dip varies 
from north-west to south-west, and from 10° to 16°. The beds vary 
much im character; copper, lead and cobalt have here been worked. 
The Bunter sandstem is exposed in the Bollin above the works at 
Quarry Bank, and extends thence in a northerly direction to the 
Lancashire coal-field. 
From Quarry Bank to near Bowdon the waterstone beds occur; 
these are much broken and contorted. Gypsum is found by the 
Bollin near Castle Hill; the general dip is south-westerly. At Tim- 
perley the upper beds of the Bunter sandstem occur for a short space 
dipping south from 8° to 10°. 
The general dip of the whole of this triangular district, bounded 
on the north by the South Lancashire coal-field, on the east by the 
Peak and Macclesfield Forest ranges, and on the south-west by the 
fault next mentioned which separates it from Cheshire and connects 
it with Lancashire, is south-westerly. 
This dislocation ranging from Leek to Bosley, where it enters 
Cheshire, thence apparently passes north of the great gypseous or 
saliferous district of Cheshire, ranging between it and Alderley Edge. 
Rosthern Mere is probably on the line. This piece of water is about 
100 feet im depth, or the bottom is about 20 feet below sea-level. 
The Bunter sandstem beds dipping 4° S. are broken off abruptly 
at Lymm, and at Warburton the waterstone beds are found dippmg 
from 20° to 46° 8.S.W. and much broken ; these beds are then thrown 
down upwards of 1500 feet to the N.E. 
They are again broken off on the rise to the east of Miilbank, where 
the highest beds of the Bunter sandstein crop out. At Woolden, on 
the south-west edge of Chat Moss, the same Bunter sandstem is seen 
and a brine-spring has been found. On Chat Moss, near this place, 
iron rods were driven to a depth of 180 feet (or about 90 feet below 
sea-level) without reaching the bottom. At Woolstone, near War- 
rington, brine was met with at a depth of 104 feet, or about 50 feet 
below sea-level. It therefore appears highly probable that the line 
of fault ranges by Rosthern Mere, and to the east of Millbank and 
of Woolden, breaking the beds abruptly and causing the depressions 
which are now occupied by Carrington and Chat Mosses. At Ros- 
thern this dislocation is crossed by a throw reaching from Holt, west 
of the Peckforton hills and Northwich, and passing a little to the 
east of the Bunter sandstein at Timperley. To the north of the first- 
mentioned and the west of the latter faults, with the exception of the 
lower portion of the Weever, the salt-beds do not appear to extend. 
Returning to Bosley, near Great Fenton the waterstones dip west- 
erly, crop out from under the gypseous beds, and are in contact with 
the limestone or millstone shales. 
The upper red marls extend along the western base of Congleton 
Edge and Mow Cop, coming into contact with the carboniferous lime- 
stone and coal-measures which are broken off on that side on the dip, 
causing at Astbury a down-throw to the north-west. The amount 
en 
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