BULL. GEOL. SOC. AM. 



VOL. 10, 1898, PL, 31 



Geological Sections of the SanJuan Valley 



sT points investigated as possible damsites 

 showing outline af former river channel and depth o'f rocK decBy 



UOWCR MACMUCA 



-^-^-- 



BOCA SAN CARLOS 



UPPER OCHOA 



LOWER OCMOA 



TAMBOR GRAMDE 



GEOLOGICAL SECTIONS OF SAN JUAN VALLEY, NICARAGUA 



