pages. 



quartzyte i 



334 A Wing's Discoveries in Vermont Geology. 



ations adjoining, but settles nothing ; while Mr. Wing's discov- 

 eries shed light not on these rocks alone, but also on the gen- 

 eral geology of New England and Eastern North America. 



In preparing the following account of his results I have used 

 mainly his letter to me of August, 1872, it being the latest 

 detailed statement of his researches left by him, and it giving 

 1 ' s facts and views quite fully in the course of its sixty-two 

 But his earlier and later notes also have furnished some 

 All remarks of my own, or additional facts from others, 

 which are introduced beyond, are put in smaller type. 



1. The Region. 



The region studied by Mr. Wing is part of the area of the 

 crystalline limestone formation of Middle and Southern Vermont 

 — the "Eolian limestone," as named by Hitchcock, in the Ver- 

 mont Geological Report* This limestone covers a wide cen- 

 tral north -and-south strip of country, extending from the south- 

 ern boundary of the State to Northern Monkton— a distance of 

 about one hundred miles. The limestone region is bordered 

 on the east almost continuously by ridges of quartzyte, or 

 s and slates, which extend along the western foot of 

 ■n Mountains. Besides, there are north-and-south 

 dividing ridges or belts of hydro-mica slatef and clay-slate, 

 with sometimes interstratitied quartzyte. On the west there 

 are, in some parts, other belts of the slate, and to the north, 

 near the great fault, areas of the Eed Sand-rock. These vari- 

 ous rocks are so associated that the study of all is involved in 

 that of the Eolian limestone. Moreover they together extend 

 southward into and through Massachusetts. 



Mr. Wing's special field of exploration was the part of the lime- 

 stone region and of the adjoining country lying between Rutland 

 and Monkton. The Eolian limestone formation occupies the broad 

 valley -f " Otter Creek" (correctly Otter River), and also those 

 of its main tributaries. 



The accompanying map is from the colored chart of the Ver- 

 mont Geological Report. Mr. Wing's notes suggest several 

 changes ; but only two of them have been made, because the 

 information is not sufficiently precise to warrant going further: 

 these are, the elongation of the "central belt of slate" to middle 

 _ , and the closing of the West Rutland limestone area 

 on the north by a junction of the area of slate on the east with the 



* Report on the Geology of Vermont, by Edward Hitchcock, LL.D., Edward 

 Hitchcock Jr., M.D., Albert D. Hager, A.M., and Charles H. Hitchcock, A.M. Two 

 vols. 4to, 1861. Published by the authority of the State Legislature. 



t The hydro-mica slates include the < T oee schist" of 



**e Vermont Geological Report, " ' 



adopts hydro-mi 



e of the results of the survey. Mr. Wing uses the term "Taleoid 

 is earlier notes, but adopts hydro-mica b] 



