the Igneous Platform. 



193 



Fig. 1. 



Sea level 



135 



380 - 



590- 





iooa 



1080- 



IZOO-i 



1413- 



Chalky Bermuda. Limestone 

 Soft above sea. level 



Chalky Bermuda Limestone 

 Somewhat harder below 

 sea level, but scarcely 

 consolidated 



Broken fragm'ental volcanic 

 materia], much arnygdaloidal; 

 greatly altered, sort, and clay- 

 itke with harder fragments; 

 jyellow to deep brown in color 



Sands and gravel com posed ef 

 rounded water- worn volcanic 

 debris, unoxidized and gray to 

 black in color 



Basaltic Lava Flow. Very dense 

 black, and amygdaloidaf at top, 

 grading into compact gray 

 lava below 



Salt water 



BasaJtic Lava Flow; dense and 

 black at top, slightly amygdaloidal 

 and grading into compact ^ray 

 lava below 



Lava Flow, dense, black, amygdaloid 

 a) above,gray compact, below. 



^SanctLayec 



Lava Flow, dense, black, amy^da- 

 loidal above, grading into com- 

 pact lava below 



Black dense lava, somewhat 

 amygdaloidal attop, becoming 

 gray and compact at bottorff 



Black, grading into gray lava 

 Salt water 



Black dense. amygdaJoidaJ attop. 



BasaJtic lava 

 Bottom of Well 



I i 1 \ 1 — 



50 100 200 



—i 1 1 



300 400 



Scale in feet. 

 Fig. 1. Diagram of Bermuda well, showing geologic section. 



