14 Groundwater
307
s
Fig. 14.1. Aerial Photo of a semi-arid area with folded quartzites and slates. Fractures (Fr) and
interpreted normal faults (Fn, added in white) are promising for exploration of deeper groundwater.
Shallow groundwater in the blocked valley (V) because of good recharge. Geologic cross selection
(N-S) is based on photo-geologic interpretation and field check
For the Quaternary volcanic terrain in Java, for example, the landforms and the
degree of dissection, which can be interpreted on imagery, relates well to the
relative age. The age of the volcanics is associated with the degree of compaction,
which in tum influences permeability, base flow and overall recharge. (Anon.,
1990, v.d. Sommen et aI., 1990).
307
s
Fig. 14.1. Aerial Photo of a semi-arid area with folded quartzites and slates. Fractures (Fr) and
interpreted normal faults (Fn, added in white) are promising for exploration of deeper groundwater.
Shallow groundwater in the blocked valley (V) because of good recharge. Geologic cross selection
(N-S) is based on photo-geologic interpretation and field check
For the Quaternary volcanic terrain in Java, for example, the landforms and the
degree of dissection, which can be interpreted on imagery, relates well to the
relative age. The age of the volcanics is associated with the degree of compaction,
which in tum influences permeability, base flow and overall recharge. (Anon.,
1990, v.d. Sommen et aI., 1990).