THE GEOLOGICAL HISTORY OF NEW YORK STATE 53 
sider that sedimentation was uninterrupted, though as a matter of 
fact there were certainly minor oscillations of level which inter- 
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ROD eee ee A eS 
WN YT Ts ES | SS EO RSS 
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Frankfort(Ordo-sss9 OnerdalSilurr Chater (Sil) shale 5 Ni (il) shake 
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Lower Salina, Upper SalinalSil, Cobleskill orrabuyt, Helderberg (Deve- 
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Fic. 17. Geologic and topographic map and structure sections of the vicin- 
ity of Clinton (Oneida county) showing the surface distribution and under- 
ground relations of the various rock formations from the Upper Ordovicic 
to the Lower Devonic inclusive. Note the simple nonfolded and nonfaulted 
structure, and the gentle southwesterly dip (tilt) of the formations. A simi- 
lar simple structure characterizes the formations of the whole southwestern 
plateau province. Vertical scale of the sections four times exaggerated. 
Geology by W. J. Miller 
fered with the deposition of sediments and produced slight uncon- 
formities. These minor interruptions have not yet been carefully 
