TRANSATLANTIC RADIO TELEPHONY 



331 



5 ABITRARY 



GLACIAL BOULDERS 

 AND CLAYS 



CALCAREOUS SHALE 

 AND AROOSTOOK 

 BLUE LIMESTONE 



HORIZONTAL SCALE 

 10,000 FT. 5.000 FT. 



Houlton A Antenna 



Length (Long 16.900 Ft. 

 (Short 14,610 Ft. 



Direction N 56° 6' E 



MIDDLE CHALK 

 LOWER CHALK 



UPPER GREENSAND 

 GAULT CLAYS 



HORIZONTAL SCALE 

 5.000 FT 10.000 FT 15.000 FT 



Wroughton South Antenna Length 16,580 Ft. Direction N 7 1° 0' W 



I CLAYS AND SANDS OF 

 1 100 FT RAISED BEACH 



BOULDER CLAY AND 

 GRAVELLY DRIFT 



UPPER OLD RED 

 SANDSTONE 



:^ 



UPPER WHITE SANDSTONE 



.ENCRINITE AND "MYALINA" 

 BEDS IN UPPER WHITE 

 SANDSTONE 



'J^^ LOWER CABONIFEROUS 

 :i:^ SERIES 



1) O RDNANCE 



HORIZONTAL SCALE 

 5,000 FT 10,000 FT 



15,000 FT. 



Cupar No. 1 Antenna 



Length 17160 Ft. 



Direction N 78° 13' VV 



Fig. 7 — Cross section of probable geological formation 

 under several wave-antennas. 



