410 A. Wings Discoveries in Vermont Geology. 



the range, and also south to Starksboro, there is another north- 



and-south range of limestone (dolomite), having an eastward 



22. dip conformable to the 



port, p. 346). The figure 

 here tdven (copied from 

 Mr. Wing's note book) 

 gives his view of the strati- 



V.,-' At Starksboro, east of 

 i Hogback. the dolomite, there is a 

 quartzyte ridge which " for a height of 3,000 feet seemed to 

 be an immense flag-stone quarry; the rock is quarried for flag- 

 ging farther north. It may be called brown quartzvte : it is 

 within the 'Talcose Conglomerate' area of the Vermont Geolog- 

 ical Report." The layers are nearly vertical, having a very 

 high eastward dip, conformable with the dolomite and with 

 the quartzyte lying west of the dolomite. The whole rallef 

 between the two ranges of quartzyte,— a nearly level strip of 

 country ''embracing two or three villages, excellent farms and 

 farm-houses,"— seems to have been made by erosion, the dolo- 

 mitic and slaty strata having been worn away faster than the 

 quartzyte of Hogback on the west and the Flag-stone ridge 

 on the east. The only fossils of the quartzyte are t 

 and Fucoids observed elsewhere, and these are the same with 

 those of the Red Sand-rock. 



The conclusion given in the notes of this excursion in 1875 

 is,— that "all the rocks in Bristol north and east of Mr. Oakss 

 residence (on the road next west of Bristol village), all in 

 Monkton and in Starksboro, are older than the G 

 the dolomites belong to the Red Sandrock series, or that 

 of the quartzyte, and in some places appear to be 400 to 500 

 feet thick; and they overlie the quartzyte, being beneath 

 because of an overturn anticlinal." These dolomites here 

 referred to the Red & those called "Subcrys- 



talline limestone" on page 343, which contain the < 

 Orthoceras at Mutton Hill and are there referred to I 

 Calciferous. The following section (from the letter of 1872,) 

 represents the rocks between the Red Sand-rock west of New 

 Haven (see map) and the quartzvte at the village 

 and Mr. Wing's view as to the folds, «. The Red : 

 dolomite or "Subcrystalline limestone;" b, The ' 

 beds" or Calciferous ; c, The "Conglomerate" or "Trilobite bed 

 or "siliceo &g it," underlying to 



the south on the strike, " Rhynchonella beds" containing fossils ; 



