The location is located along Akwanga
– Lafia road. The location is an outcrop of older granite compare to the one we
saw at the other outcrop (location 3). The granite occurs in schist i.e. they
are foliated (pan-African) with alignment of some minerals.
#There is also a
horizontal joint that is cementing them together and the horizontal joint helps
in terms of breaking them to aggregates for construction work and there are
also vertical joint in the formation and quartz veins is also there.
Measurement
of features taken here are as follows;
Thickness of the quartz vein;
(1) 5cm
(2) 4cm (3) 2.5cm (4) 3cm
Trend:
Strike N34
– N214
Dip direction 124
SE
Dip amount 540
The G.P.S Reading
Latitude – 80, 44' 08"N
Longitude- 80, 32' 46"E
Elevation 27M
Table 1: Showing the trend
joint were measured in terms
of their
dimension
|
S/NO
|
TREND OF JOINT
|
|
|
1
|
N275O –
|
N95O
|
|
2
|
N102O –
|
N283O
|
|
3
|
N347O –
|
N168O
|
|
4
|
N355O –
|
N175O
|
|
5
|
N348O –
|
N167O
|
|
6
|
N357O –
|
N177O
|
|
7
|
N54O –
|
N234O
|
|
8
|
N285O –
|
N105O
|
|
9
|
N346O –
|
N168O
|
|
10
|
N13O –
|
N193O
|
|
11
|
N140O –
|
N160O
|
|
12
|
N339O –
|
N159O
|
|
13
|
N269O –
|
N91O
|
|
14
|
N345O –
|
N165O
|
|
15
|
N78O –
|
N257O
|
|
16
|
N93O –
|
N183O
|
|
17
|
N262O
|
N82O
|
|
18
|
N248O –
|
N67O
|
|
19
|
N293O –
|
N112O
|
|
20
|
N255O –
|
N75O
|
Table 2: Showing the cumulative frequency of different
on trend of joint
|
S/N
|
Class interval
|
Frequency
|
Total frequency
|
|
1
|
0 – 30
|
0
|
0
|
|
2
|
31 – 60
|
0
|
0
|
|
3
|
61 – 90
|
3
|
15
|
|
4
|
91 – 120
|
4
|
20
|
|
5
|
121 – 150
|
0
|
0
|
|
6
|
151 – 180
|
8
|
40
|
|
7
|
181 – 210
|
2
|
10
|
|
8
|
211 – 240
|
1
|
5
|
|
9
|
241 – 270
|
1
|
5
|
|
10
|
271 – 300
|
1
|
5
|