PHOTO PATTERN DATA ELEMENTS: CRATER, VOLCANIC
The Alpine-Himalayan-Island Arc System- This system consists of rocks, some as young
as the tertiary, which were compressed and folded, with numerous overthrusts.
Earthquakes and volcanoes characterize an extensive belt of landscape forming the
Islands of Japan. There are massive blocks within the system, the outer belt of folding
and volcanic activity having produced craters in the Japanese Volcanic chain; the
southern arc of this chain has formed Kyushu Island. (Wet, Subtropic)
Form
Crater, sharp, knife-edged ridges with the steep slopes of
extinct volcano.
Drainage
Dendritic, fine to annular.
Gully Characteristics
V-shaped.
Special Features
Sharp, knife-edged ridges.
Color (Photo Gray Tones)
Dull; light gray.
Land Use
Natural cover, forested and grass-covered, scrub growth.
Vegetation
Some tree and grass cover in low level zones.
Source: Terrain analysis procedural guide for surface configuration, US Army engineer
topographic laboratories, p. 7-103