Geology Reference
In-Depth Information
Profile 2
Gravity profile
Profile 1
10000
8000
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7200
7000
6800
6600
6400
7000
6800
6600
6400
6200
10 000
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Gravity profile
Magnetic profile
Magnetic profile
Surface
0
Surface
0
1
km
2
km
Profile 3
7800
7600
7400
7200
7000
6800
12 000
10 000
8000
6000
4000
2000
Drill holes intersecting < 20% iron oxides
Drill holes intersecting > 20% iron oxides
Gravity profile
0
1 km
Magnetic profile
Surface
0
1
km
Fig. 7.28
Gravity and magnetic ground profiles over part of the Eyre Peninsula, South Australia, at the locations shown in Fig. 7.27 (After
Webb 1966.)
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200
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A
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300
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400
Proposed
apartments
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B
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Magnetometer station
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400
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500
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Contour in nT relative to
background of 47 000 nT
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600
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Fig. 7.29
Magnetic anomaly contour
map of a site in Bristol, England. Contour
interval 100 nT. (After Hooper &
McDowell 1977.)
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C
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0
5m
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