New York State Education Department 



New York State Museum 



I John M. Clarke Director 



Bulletin 92 

 PALEONTOLOGY 13 



GUIDE TO THE GEOLOGY AND PALEONTOLOGY 



OF THE 



SCHOHARIE VALLEY IN EASTERN NEW YORK 



BY 



A. W. GRABAU 

 INTRODUCTION 



The village of Schoharie has long been famous for the fine 

 stratigraphic sections which are exposed in its vicinity. The 

 labors of Gebhard, Mather, Hall, Stevenson, Prosser, Darton and 

 others have outlined the general succession of the strata and 

 their relation to those of other portions of the State. Eecently 

 a careful study of the Coralline or Coblesldll limestone of the 

 Schoharie region has been made by Mr C. A. Hartnagel, the 

 results of which are given under the description of that form- 

 ation in a succeeding chapter. 



From the accessibility of the Schoharie valley and from the 

 ease with which most of the formations can be studied in that 

 vicinity, the region has always attracted students and teachers 

 of geology and paleontologj-, and has indeed become one of the 

 districts, a visit to which forms part of a geologic education. 

 For this reason it has been felt that a comprehensive description 

 of the geology of this region with special reference to the needs 

 of the student was desirable. In order that this description 

 might be of more general usefulness, even to those who have not 

 been trained in geologic work, it has been deemed advisable to 

 discuss principles freely, specially where these principles are well 

 illustrated by local features. It may be said that some of the prin- 

 ciples which have a vital bearing on the geologic history of the 

 Schoharie region have not yet found their way into our current 



