20 
© 
ment studied, offered to the Project group of geologists an accu 
rate control of the geologic evidences so obtained, this permi- 
ting the RADAMBRASIL to 
1 
ivulgate those technical knowledges by 
means of checked parameter 
0 
2. BASIC ACTIVITIES 
  
2.-1.- PRELIMINARY INTERPRETATION 
  
It consist in the observation and study of huge areas, ini- 
tial delineation of features distinguished from the nearby 
areas in terms of tone and texture, morphologic expression € e 
associated to geobotanic features related to soil and 11- 
thology as well as the drawing of linear features reflecting 
structural conditioning, joints and fault patterns, bedding 
or bedding lineaments, xistosity and foiding. For this ini 
tial task all other available elements from prevbus work 
and other remote sensor products where used. 
  
  
  
  
  
  
  
  
  
ACCUMULATED PRODUCTION 10 ACCOMPLISH 
- x = X 
Sheets Sq. Km Sheets Sq. Km 
278 4.587.000 - = 
x 1? O0' x 1? 30' sheets, with 18.000 sq. km each 0 9 
XX Pre-RADAMBRASIL area - 4.318.910 sq. km = 263 sheets. 
After the selection of field targets, low altitude flight 
operation, river and road surveying and mainly in the Ama 
zon areas, approach of clearings by helicopters to initia 
te field observations in their surroundings. 
  
| 
ACCUMULATED PRODUCTION XT ACCOMPLISH 
  
Sheets Sq. Km Sheets Sq. km 
  
  
  
  
225 4 3,7088.250 53 800.750