126 ECONOMIC GEOLOGY OF AMITY QUADRANGLE, PA. 
The total thickness of the limestone on Cemetery Hill is 30 feet, as 
shown in the following section taken from Stevenson : a 
Section of Upper Washington limestone at Washington. 
Ft. in. 
Limestone, laminated, argillaceous 2 
Shale, dark 5 
Shale, calcareous 6 
Shale with vegetable markings 2 
Limestone 10 
Shale, bituminous 10 
Limestone 2 
Shale, calcareous 1 3 
Limestone 1 6 
Shale 10 
Cimestone 3 
Shale 2 
Limestone 3 
30 3 
Another good section of a part of the limestone is exposed in a 
quarry one-half mile northeast of Washington, on the Williamsport 
pike. It is here quarried and crushed for road metal. The lime- 
stone is well exposed on all the roads leading out of Washington to 
the east and south, and outcrops at many points in the Nineveh 
syncline in South Strabane, northern Amwell, and South Franklin 
townships. In this region great care is necessary to avoid confusing 
it with another limestone which occurs 100 to 130 feet above. This 
limestone is also dark blue to black in color, and in thickness and 
other characteristics seems to be almost the exact counterpart of the 
Upper Washington. 
A good exposure of the Upper Washington limestone appears in a 
quarry on the hill just southeast of Washington. The bed is here 15 
feet thick. On the uplands in the vicinity of Mount Wheeler the 
limestone is deeply buried, but it appears again for about a mile 
between Vankirk station and the Chambers dam, and south of Mc- 
Cracken station is exposed along Bane Creek from 100 to 200 feet 
above the floor of the valley. In the vicinity of Amity and in gen- 
eral throughout the southern portion of Anrwell Township it is high 
up on the hills, brought up by the Amity anticline. South of Ten- 
mile Creek it is overlain by 200 to 400 feet of rock and its outcrop 
follows the valleys and ravines for the entire distance between Dunn 
station and Bissell. 
Throughout West Bethlehem Township outcrops of the limestone 
are numerous, but they all occur high up on the hills, so that they 
appear on the map as mere patches. In the vicinity of Scenery Hill 
« Second Geol. Survey Pennsylvania, Rept. K, 1876, p. 46. 
