22 BULLETIN OF THE 



2. BED-ROCKS OF THE REGION. 



CANAAN AND LEBANON RANGE AND SHAKER VALLEY, 



Along the western slope of the Canaan and Lebanon Range, the 

 exposures of bed-rock consist of fine-grained mica schist, containing, in 

 some localities, layers of white quartz from one fourth of an inch to one 

 inch in thickness. 



Upon the knob called Fry's Hill, on the crest of the Canaan and 

 Lebanon Range, are exposures of fine-grained, foliaceous rock, very 

 tough, and of a gi-een color. It is a chloritic, probably metamorphic rock, 

 and closely resembles that of which the Richmond Boulder Trains are 

 composed. This rock is very limited in extent, being found, with one 

 exception, only upon Fry's Hill, and in that locality not extending more 

 than 150 feet below the summit. Its lack of stratification, its j^eculiar 

 structure and limited extent seem to indicate that it may have been 

 originally an igneous rock, but no direct junction of it with other rocks 

 ■was found. In order to more fully determine its nature, thin sections 

 "were studied by Mr. Wadsworth, who considers it to be a chloritic 

 schist.* 



Just west of the summit of Douglas Knob, one and one fourth miles 

 N. N. E. from Fry's Hill, the bed-rock is similar to that of the latter 

 locality, except that it shows signs of stratification, and contains rounded 

 grains of quartz, so that it is, in all probability, a metamorphosed, 

 argillaceous sandstone. On the same range, a summit half a mile 

 S. S, W. from Fry's Hill is made up of rock which closely resembles 

 that just described as occurring at Douglas Knob. 



Along the eastern slope of the C'anaan and Lebanon Range the bed- 

 rock is a friable and micaceous argillite, the exposures near the crest of 

 the range being greenish gray, while those near the base are dark gray 

 or nearly black. 



Through the bottom of the Shaker Valley extends a broad belt of 

 well-stratified highly crystalline limestone, containing no traces of fos- 

 sils. This rock is mottled gray and white upon the fresh surface, but 

 white when weathered. 



RICHMOND RANGE AND RICHMOND VALLEY. 



TTpon the western slope of the Richmond Range, the rock is a fine- 

 grained mica schist, in many places approaching argillite. Near the 



• A more detailed account of tlie results of Mr. Wadsworth's microscopic analysis of 

 this and other rocks of the region is contained in note B, page 39. 



