Quote:
Originally Posted by Northern Light
[we need a 10 metre core sample from the middle of Broomhill street; see what's in there!]
British Geological Survey web site has a number of boreholes. One behind Broomhill St. from 1974 shows:
0 - 2m Made ground, coal dust, sand and gravel and bricks.
2 - 4m Loose coarse brown sand and fine coarse gravel.
|
Fascinating, I forgot about those borehole logs. you did mention them a while back. I had a good browse through those last night, 'til 2am.
There is another just east of Harbour Road that goes a bit deeper. Also on the 'north side' there is a series of bores from 1976 when the degaussing station was planned. these reach the solid geology at 26 metres or there about.
A deep one for a well to supply the locos with water is near the railway track behind Brinkburn place - drilled in June 1872 reaches 73 metres. Passes through two coal seams 18" thick and 12" thick. (Same as Percy Street coal and the shore excavations??)
link:
http://scans.bgs.ac.uk/sobi_scans/bo.../12424108.html