

BULLETIN 380 



Published monthly by the 



New York State Education Department 



JULY 1906 



New York State Museum 



John M. Clarke Director 



Bulletin 10 1 



PALEONTOLOGY 16 



GEOLOGY OF THE PENN YAN-HAMMONDSPORT 

 QUADRANGLES 



AMI 





D.D.LUTHER Uli«A*.V 



PAGE 



Introduction 37 



Mesodevonic 38 



Moscow shale 38 



Neodevonic 39 



Tully limestone 39 



Genesee black shale 40 



Genundewa limestone 41 



West River black shale 41 



Middlesex black shale 43 



Cashaqua shale 43 



PAGB 



Parrish limestone 44 



Rhinestreet shale 45 



Hatch shale and flags 47 



Grimes sandstone 48 



West Hill flags and shales ... 49 



High Point sandstone 51 



Prattsburg shales and flags. . 52 



Chemung sandstones 53 



Undulations of the strata 54 



Index 57 



ALBANY 



NEW YORK STATE EDUCATION DEPARTMENT 

 1906 



Mpi24ra-Ja6-iooo 



Price 25 cents 



