84 DR. 
Speci¬ 
men No. 
E. 6519 
E. 6520 
L. lU 
Pi. 8987 
L. 115 
K 11444 
L. 113 
L. 15 
L. 15a 
L. 16a 
L. 015a 
E. 016a 
A. H. COX: REPORT ON MAGNETIC DISTURBANCES IN NORTHAMPTONSHIRE 
Hocks from the Melton Mowbray and Irtlilingborough Districts. 
Summary of Magnetic Properties. 
Magneti- 
Volume-susceptibility 
i 
Weight 
in lO^'' C.G.S. units. 
sing 
Refer- 
Description and locality. 
of 
Density. 
force H 
ence 
specimen. 
in (J.Gr*S. 
units. 
Individual 
Average 
page. 
1 
values. 
value. 
I. Igneous Rocks. 
gr- 
Dolerites, intrusive in Coal Measure 
Strata. 
Dolerite, marginal portion, bore- 
3 • 843 
2 - 660 
49-5 
434 
434 
hole, Owthorpe, Nottinghamshire 
Re-tested after demagnetisation 
_ 
_ 
22 
495 \ 
472 
40 
449 j 
Dolerite, central portion, bore-hole. 
6 • 295 
2-760 
132 
8-8l 
8-8 
Owthorpe, Nottinghamshire 
248 
8-9/ 
Re-tested. 
— 
— 
237 
10-3 
10-3 
101 
108 
- 113 
and 
128 
Dolerite, coal shaft, Whitwick, 
8 • 386 
2-890 
24 
338 '1 
Leicestershire 
Re-tested after demagnetisation 
— 
— 
39 
24 
23 
39 
405 ^ 
430 J 
380 \ 
437 J 
391 
408 
Dolerite, bore-hole, Kelham, Not- 
7 • 885 
2-65 
19-8 
279 
279 
tinghamshire, after demagnetisa- 
tion 
Dolerite, lower 2 >ortion, bore-hole. 
7-455 
2-830 
46 
210 
210 
Southwell, Nottinghamshire 
Basalt, upper portion, Southwell, 
5-295 
2-58 
56 
7-2 
6-9 
Nottinghamshire 
48 
6-6 
Basalt, Lava in Carboniferous 
Limestone. 
Amygdaloidal basalt (loadstone). 
6 - 295 
2-610 
40 
11-8') 
'103 
107 
1 0?^ 
Bakewell, Derbyshire 
69 
11-9 1 
12-5 
J 
40 
12-9 f 
69 
13-4j 
L 
Granites, and Associated Rocks, 
Mount Sorrel, Leicestershire. 
Normal granite, grey variety. 
9-008 
2-630 
96 
69-5'| 
Mount Sorrel quarry 
69 
62-9 ^ 
65 
■ 
1 
47 
62-9 J 
Re-tested. 
_ 
_ 
48 
59 - 21 
73 
60-1 } 
60 
73 
60-1 J 
(Another specimen). 
by magn 
etometer 
— 
— 
130 
Granite, grey variety, Mount 
5-167 
2-663 
98 
134 d 
132 
Sorrel quarry, matrix surround¬ 
ing heathen 
47 
131 J 
Granite, pink variety. Mount 
11-618 
2-660 
67 
45 
45 
102 
Sorrel quarry, matrix surround- 
107 
ing heathen 
)■ 125 
“ Heathen,” or basic patch in 
6 - 635 
2-697 
67 
181 1 
181 
and 
L. 15a 
47 
181 J 
131 
“ Heathen,”* or basic patch in 
10-400 
2-660 
47 
40 
40 
L. 16a 
i 
* The specimen included a small amount of normal pink granite. 
