IHSA.] loo - [Stevenson. 



ant little vallej'-, which is evidently continuous geologically with Abb's 

 valley, but is separated from it by a high divide. Stony ridge separates it 

 and Abb's valley from "Wright's valley. The limestone strip is very nar- 

 row as the dip is abrupt. The Abb's Valley fault passes but a little way 

 north from the fork of the road in the cove so that coal beds are accessible 

 within a short distance on that side. 



Crossing Stony ridge from Crockett's cove one comes to Cavitt's creek. 

 There exposures are not very clear and the line of the Stony Ridge fault 

 was not seen. The New Garden fault is crossed very near the forks of 

 Cavitt's creek in Wright's valley. It barely fails to show some Coal Meas- 

 ures rocks on its northerly side. From the line of this fault to Jefierson- 

 ville on the Fiucastle pike, the only rocks exposed belong to the Knox 

 and Trenton groups. All exposures cease soon after Cavitt's creek has 

 been passed, so that the conditions in the House and Barn synclinal 

 along this road are wholly concealed. The southerly side of the synclinal 

 is shown at Jeffersonville with the shaly beds of the Trenton almost ver- 

 tical. The dips grow gentler as the beds ascend the Elk Garden anticlinal, 

 which the pike crosses at about four miles east from Jeffersonville at a 

 school-house beyond the woolen mill. Thence the dips are comparatively 

 gentle on both sides of the axis. 



East River mountain, lying north from the pike and extending east- 

 ward to New river, is held in the House and Barn synclinal, and evi- 

 dently answers to Paint Lick mountain further west in the same trough. 

 Northward from it are two others, very short ridges, both evidently 

 Medina-capped. These were not examined. East River mountain is 

 clearly double, made up of two synclinals, the structure being visible 

 from the Fincastle pike, but better from the summit of Rich mountain. 

 The dip u very abrupt in each of them and the Medina stands in almost 

 vertical walls. The thickness of Clinton cannot fail to be insignificant. 



The Plum Creek gap through Rich mountain passes, in all probability, 

 very near the end of the synclinal holding Medina, for at but a short dis- 

 tance further east the mountain is only the northerly side of the synclinal 

 between the Elk Garden and Burk's Garden anticlinals. The red Medina 

 is well shown on the northeny side of Rich mountain along the road lead- 

 ing to Burk's Garden and the white Medina is reached at the summit, 

 where it is dipping south-eastwardly at 40 degrees. The Clinton shales 

 are reached at once and fragments of the fossil ore are shown in the road. 



The dip is reversed at a little way down the slope and for a short distance 

 is very abrupt ; but it diminishes so that at the mouth of Wolf Creek gap 

 through Garden mountain the dip on the northerly side of the Burk's Gar- 

 den anticlinal is barely 20 degrees. While Medina forms a fine cliff on 

 the sides of the gap, while the harder rocks of the Clinton are shown at 

 the mouth. Clinton beds underlie Wolf Creek valley between Garden and 

 Rich mountains. 



The dip increases abruptly within Burk's Garden, the Trenton shales 

 showing 40 degrees north-west. Few exposures were observed in this "gar- 



PROC. AMER. PHILOS. SOC. XXII. 118. T. PRINTED MARCH 6, 1885. 



