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Hie three major objectives of this investigation are 
as follows: 
1) . To evaluate the digital image 
processing system most capable of 
discriminating lithologies in this 
tropical enivronment. 
2) . To evaluate the digital 
image processing system most 
appropriate for the structural 
geologic investigation. 
3) . To assess the capabilites of SIR-A 
imagery as a complement to Landsat 
imagery for this geological investi 
gation. 
REGIONAL GEOLOGY AM) GEOLOGIC REMOTE SENSING 
Hie regional geology of West Java may be overviewed 
through Van Bemnelen's physiographic map of West Java 
(1949) (Fig.:2) in which the island is divided into 
four physiographic zones and one active volcanic 
chain. Each of the zones exhibits typical 
geomorphologic characteristics amenable to Landsat and 
SIR-A imagery analysis. Hie 40 km. wide plain of 
Jakarta in the north consists of alluvial river 
deposits and lahars, stretching from Serang, 
Rangkasbitung to Cirebon. The Bogor zone, to the 
south, is a conplex belt of hills and mountains formed 
of strongly folded Neogene strata with many hypabyssal 
intrusions such as volcanic necks, stocks and bosses. 
Hie Bandung zone is a longitudinal belt of 
intermontane depressions from which emerge island-like 
ridges of Tertiary strata. Structurally, it is the top 
part of the geanticline of Java which broke down after 
an arching up at the end of Tertiary. Hie Southern 
Mountain zone is the fourth physiographic unit. It is 
formed by mountaineous land and represents the 
southern flank of the geanticline. The recent active 
volcanoes lie primarily in the center of the island. 
JAVA SEA 
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Figure 2: Hie Physiographic Map of West Java. 
(Vian Bentnelen, 1949) 
Ehysiographic analysis of West Java using the 
full-scene of Landsat FCC imagery distinctly shows the 
plain of Jakarta, the active volcanic belts and the 
Southern mountain zone. Since most of the area south 
of the Plain of Jakarta is covered with vegetation and 
shows.red on the false-color composite imagery, 
physiographic interpretations are mostly derived from 
analysis of tone, texture and topography. West Java's 
Band-7 imagery, however, provides additional 
information, particularly on its drainage system and 
features of volcanic distribution (Figure:3). A 
relief map of West Java was created based on the 
information retrieved from Landsat FCC and Band-7 
imagery (Figure:4) which together are capable of 
discriminating each of these physiographic zones. The 
area in the north with its low drainage density and 
meandering stream is the plain of Jakarta, while the 
Figure 3: Landsat Band-7 full-scene imagery. 
West Java - Indonesia. 
Figure 4: Relief diagram of West Java area deve 
loped from information retreived from Landsat FCC 
and Band-7 imagery. 
Figure 5: Regional drainage system, West Java 
from Landsat Band-7 imagery.