Fig. 4.52. Proportion of regional population on different geological zones.
102=Holocene alluvium;
104=Pleistocene alluvium;
105+106=Tertiary and Cretaceous sandstone and mudstone;
107+108=Cretaceous and Jurassic volcanic rock;
119=Archaean (pre-Cambrian) metamorphic rock;
124+126=Jurassic porphyry;
125=Jurassic granite.

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