Published monthly by the 



University of the State of New York 



BULLETIN 272 . NOVEMBER 1902 



New York State Museum 



Frederick J. H. Merrill Director 

 Bulletin 56 

 GEOLOGY 5 



DESCRIPTION OF THE 



STATE GEOLOGIC MAP OF 1901 



BY 



FREDERICK J. H. MERRILL Ph.D. 



PAGE 



Preface 3 



Introduction 5 



History of the New York geologic 



surveys 5 



Geologic provinces of New York.. 11 

 Maps showing geology of New York 



state 16 



Earlier geologic maps and their 



geographic bases 17 



Color scheme 20 



Acknowledgments for material 



used 20 



Contributing geologists 20 



PAGE 



Geologic maps used in compila- 

 tion 22^ 



Authorities for the counties of 



New York 28 



Authorities for Connecticut, Mas- 

 sachusetts, Vermont, New Jersey 



and Pennsylvania 32 



Manuscript maps contributed 32 



Nomenclature of New York geol- 

 ogy 33 



Table of formation names faces 34 



Index 35 



Plates 1-2 face 6 



