Fig. 6: 
The two images (5a) multispectral and (5b) high resolution 
demonstrate the potential of the MOMS-02 narrow 
multispectral bands (in this example the infrared band 4) and 
the high resolution panchromatic band to detect even minor 
changes in morpho-logy, geology and geochemistry (e.g., Fe2+ 
Fe?* contents) and the capability of merging multispectral 
resolution with high spatial resolution to enhance small scaled 
pattern and to resolve sub pixel multispectral features. The 
area is characterized by granitic and andesitic rocks 
intercalated with mesozoic/tertiary sediment. Hydrothermal 
alterations in 2 of the 6 mining zones are distinct visible. The 
gypsum rich dump material is shown in bright grey values. The 
high resolution subimage (5b) shows detailed morphologic 
features, streets, railways and mesoscale tectonic pattern in the 
Cordillera Central. Small textured erosional pattern are more 
distinct recognizeable in comparison with the spectral image 
(5a). The composition of alluvial deposits, joints and fractures 
and shades of grey of the vulcanic, intrusive and sedimentary 
rocks allows very detailed differentiation. 
28 
MOMS-02 subscene, High resolution panchromatic band (4.2 m), south-eastern part of the Salar de Atacama area. 
Figure 6 shows an area located in the northern Chile east of 
Antofagasta including parts of the Salar de Atacama, unveiling 
manifold geological features. The  geologic setting is 
characterised by sediments with grey values ranging from light 
grey to dark, which were intensively fractured as a part of the 
central Andine depression (Puna de Atacama). The southern 
shore of the Salar de Atacama with dry fallen salt flats lies in 
the left upper corner. The area is rich of granitic and dioritic 
intrusions in light grey values belonging to the West Pacific 
Subduction Zone. Represented in dark grey values are basic 
and andesitic vulcanic cones and lava streams in the lower half 
of the image. Different iron content and typical mophological 
features characterize ignimbrite flows. The high spatial 
resolution of this image enables mapping of thin layers of 
sediments as well as detection of small-scale tectonic 
structures and the detailed morphologic shape of the vulcanic 
rocks. Neotectonic traces of recent faulting and thrust faults, 
composition of alluvial deposits (mainly volcanic ashes) and 
shades of grey and white in the partly dry fallen salt lake of the 
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B6. Vienna 1996 
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