Page 78 - Fundamentals of Physical Volcanology

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MAGMA STORAGE 55

100 km

Skye
Scotland
Rum
Ardnamurchan

Mull

Fig. 4.15 The patterns of lateral dike
emplacement from Tertiary intrusive
complexes in western Scotland.
Individual intrusive complexes are Arran
named and indicated by solid black
areas. (Modified from fig. 2 in Richey,
J.E. (1961) Scotland: the Tertiary
England
Volcanic Districts. HMSO, Edinburgh.
Reproduced courtesy of the
Geological Survey. IPR/92-27C.)

12
10
10 11 10,000 years
1000 years
10 100 years
10
Solidification time (s) 10 8 7 10 years
9
10
1 year
10
Fig. 4.16 The times needed for heat 10 6
loss to cause the solidification of 1 week
intrusions of various widths. The solid 10 5 1 day
line represents an initial temperature 10 4
contrast between the magma and 1 hour
3
country rock of 1000°C, the dashed 10
0.1 1 10 100 1000
line represents a 500°C contrast and
the dotted line represents a 200°C Intrusion width (m)
contrast.