BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 2, pp. 331-338 March is, 189I 



ON THE LOWER CAMBRIAN AGE OF THE STOCKBRIDGE 



LIMESTONE. 



BY J. E. WOLFF. 



{Read before the Society Decetnher 30, 1890.) 



CONTENTS. 



Page. 

 Introduction 331 



Geography of the Area described 331 



Earlier Opinions concerning the Rocks 333 



Results of Recent Researches 334 



Discoveries of Fossils 334 



Conclusions as to Structure 336 



Discussion 338 



Introduction. 



Geography of the Area described. — The village of Rutland, Vermont, is 

 situated near the western base of the main range of the Green mountains, at 

 the junction of Otter creek with a large tributary from the north, called East 

 creek. The village occupies a small portion of a wide valley extending some 

 twenty-five miles southward to the head of Otter creek, and, after crossing 

 a low divide, considerably further on southwardly flowing waters. Toward 

 the north a low divide terminates the drainage basin within four miles; but 

 beyond this the broad valley, in the continuation of Otter creek, extends far 

 northward nearly in the same line. The location of the village with respect 

 to the more prominent features of the topography as well as the structural 

 features is shown in the accompanying diagram, figure 1. 



This " valley of Vermont " is about three miles wide at Rutland. It is 

 bounded on the east by the abrupt slopes of the first or outer range of the 

 mountains ; on the west by a north-and-south ridge over a mile wide, called 

 Pine hill, through which Otter creek has cut its way westward at Rutland, 

 turning northward again in the succeeding narrow " Centre Rutland valley." 

 A second and still narrower north-and-south ridge separates the second val- 



XLIX-BuLL. Geol. Soc. Am., Vol. 2, 1890. (331) 



