1887.] "'^ [Stevenson. 



The many railroad cuts along New river from this gap northward to 

 Big Stony creek exhibit the structure very well. Only Calciferous is 

 shown under the Kimberling and Sinking creek anticlinals until the 

 Wenonah fault is reached near the mouth of Big Stony creek, where one 

 sees Medina. Thence to the foot of Buckhorn or Little mountain the 

 limestone is exposed in cuts and loss frequently in natural outcrops. 



The surface of the area between Pearls and Sugar Run mountains on 

 the westerly side, and the Salt Pond mountains on the easterly side of 

 New river shows traces of erosion planes. The underlying rocks belong 

 to the Calciferous, Trenton and Hudson, but the detrital ccatis very thick 

 and for long distances completely conceals the bedded rocks. 



The Buckhorn fault is continuous eastward from New river certainly 

 for twelve miles and the limestones of the Calciferous are exposed fre- 

 quently along Big Stony creek. The fault runs along the face of Buck- 

 horn or Little mountain, but what l)ecomes of it or of the limestone valley 

 iust south from it was not ascertained as the creek was followed only for 

 three miles from the river, but ihe valley appears to be continuous to the 

 county line. Big Stony creek approaches very closely to the "W^enonali 

 fault at barely a mile from the river, where the limestone is turned up 

 suddenly at forty degrees northward and Medina is shown in the hill 

 above. 



A road leading to Little Stony creek leaves this stream at rather more 

 than two miles and a half from the river. The Medina of the Valley 

 ridge is reached before one comes to the first house, being shown in place 

 at a little way from the road. The summit of the ridge is about GOO feet 

 above New river at Snidow's lower ferry and there the Medina is reached 

 a second lime. The rock is not shown in place, but the surface is covered 

 with fragments of the sandstone which could hardly have come down 

 from Butte mountain. The limestones are reached again as the road 

 descends to a little stream and they are still dipping southward. 



The Trenton shales and shaly limestones are shown on the next ridge, 

 but the Hudson beds are shown only further up the ridge eastward from 

 the road. The summit of the road, at approximately 400 feet above the 

 river at Snidow's lower ferry, is covered with debris of Medina and this 

 ridge is merely the termination of Butte mountain. The Pearisburg syn- 

 clinal passes at somewhat more than a mile from Little Stony creek, and 

 the northward dip is well shown on the road as it descends to the creek. 

 The Trenton limestones form a bold ridge on the southerly side of the 

 creek, the southerly wall of a deep gorge which has Butte mountain for its 

 northerly wall. Medina forms the double crest of Butte or Big mountain. 

 The northerly outcrop encroaches on the narrow strip of Cambro-Silurian 

 between the mountain and the Valley ridge so that the two lines of Medina 

 appear to overlap. The area of the lower rocks is certainly so narrow 

 that it cannot be represented on the map. 



The road to the Mountain lake leaves the pike at Doe creek, which it 

 follows to very near the lake. The cherts of the Calciferous are exposed 



