The "Flow Chart" of the mapping program was as follows: 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
LANDSAT GROUND TRUTH 
PUBLICATIONS FIELD DATA je IMAGERY PARAMETERS 
Collection Visual Photographic 
Evaluation Measurements 
Evaluation Interpretation Reproduction | 
PRELIMINARY 
INTERPRETATION LAND SAT PUNCHED CARDS 
MAP 
Field Check 
COLOR 
Y cowPosrEs  [¢ 
2 
"4 
GEOLOGICAL v ANALOG 
INTERPRETATION M— X IMAGE PRODUCTS 
| MAP 
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| à 
| DIGITAL 
| FR J 
| Cartography CLASSIFICATIONS [¢—— 
| t | 
| Printing 
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| PRINTED 
| GEOLOGICAL 
INTERPRETATION 
| MAP 
  
Fig. 2: Mapping program for SW Egypt 
All available publications were used; but, as mentioned in the 
beginning large areas of Southwestern Egypt were practically 
unknown from the geological standpoint. Most important were 
| the investigations of BAGNOLD (1931), EL Shazly et’al. (1976), 
SAID (1962). 
| Field data were collected by several field parties, including 
the authors. The most difficulties posed the logistic problems, 
especially the large amounts of gasoline and water necessary 
to travel large distances in the desert. Up to five four-wheel- 
drive vehicles were used for each field trip; all in all about