DESCRIPTION OF THE COLOR AERIAL PHOTOGRAPHS 
Six flight strips of color aerial photographs of 
the Furnace Creek Wash test area were flown northwestward, 
parallel to the topographic and geologic grain of the area, 
The photographs show the east flank of the Black Mountains, 
the valley area of Furnace Creek Wash, and the west front 
of the Funeral Mountains, A photogrammetric description of 
this photography follows: 
1l, Scale approximately 1:10,000, 
2. Normal stereoscopic overlap along the flight strip. 
Flight altitude approximately 10,000 feet above 
sea level, 
4, Focal length of camera lens 12 inches (K-17 aerial 
camera), 
5. Standard 9- by 9-inch format, 
Three flight strips of color photographs of valley 
areas were overexposed, and field-photo correlations could 
not be made on the basis of color alone, 
Photographs of mountainous areas were exceptionally 
high in quality; that is, photograph colors matched correl- 
ative ground colors well within the tolerances of visual 
identification, in many places within the tolerances of 
matching by rock-color chart technique /. Photo images are 
Sharply defined on these photographs. 
FIELD STUDIES TOWARD OBJECTIVE 1 
Description of the test area 
The field area is underlain largely by extremely 
colorful formations of Tertiary age that show rapid facies 
changes and wedging of sedimentary units, Rock types and 
color sequences are repeated throughout the sequence, 
/ The "Rock-Color Chart", E. N. Goddard and others, distri- 
buted by the Geological Society of America, New York, N.Y. 
The form and arrangement of the chart is based on the 
Munsell system of color notation,