SMITHTOWN BAY 
| 
FOO 
Itc. 16. 
73°30' 
Surface geology o 
T3h0 
f the western half of Long Island. Pleistocene (1. Recent; 2. Overwash: 3. 
Ist Moraine; 4. 2d Moraine; 5. Till (or Boulder Clay) ; 6. Neocene; 7. Cretaceous; 8. Pre-Cambrian 
(From N. Y. State Museum, Geological Map. Southwestern Sheet.) (6928) 
(Gneiss). 
68T 
