Pennsylvania Geology Final Report Volume 1 1981

SLATE IN NORTHAMPTON AND LEHIGH COUNTIES. 599
97. Abandoned quarry (Fig. 7), \ m. S. of Chapman's,
150x150, full of water; slates thin bedded; vertical dip.
The horizontal section in the fujure shows the contortions
in the strike of the rock at the northwest corner of the
quarry.
East Allen township.
08. Chester county quarry is 200x250x130 feet deep.
The slates dip 20°, S. 40° W, Cleacage horizontal. At 10
to 40 feet from the top of the cut, veins of quartz show
pai-allel to the bed plates. The slates are all thin bedded
and the beds differ slightly in color. Some few of the
slates have a small amount of iron pyrites in them. The
blocks coming out of the quarry are large and even in size.
Some of them are 20 feet long, 4 feet wide and 2 feet thick,
but do not seem to split well. There is a little water in the
quarry. It is worked by two cable derricks, run by one fortyhorse
power engine. At the corner of the road, just north
of the quarry, there is an abandoned quarry full of water.*
100. A. Koch' s quarry., on Catasauqua creek, Smiles W.
of Bath ; 200x100; full of water; dip 15° to N. ; cleavage
6° to S. ; slates thin bedded ; some iron pyrites.
* The contact of slate and limestone enters the township from L'pper Nazareth
east of Bath, takes a westerly direction, crossing the railroad half a
mile south of Bath, continues on to the south-west for a mile, turns to the
south for J of a mile, then turning to the west passes through Jacksonville
and then along to the west, keeping south of the road leading west from
Jacksonville. There are three outlying patches of limestone in the northwestern
part of the township shown on the map. They are probably brought
to the surface by the anticlinal wh'mh euiem i\\e slate south-west of Baih.
Their shape cannot be accurately defined owing to the surface being covered
with loose slate. A limestone quarry, 1,000 feet west of the Chester slate
quarry. The dip of the limestone is 20° to the west. On top of the (juarry
there is a body of slate which is non-conformable to the limestone. The
slate is somewhat bi'oken and has probably fallen down on the eroded lime-
stone. One quarter of a mile S. of Koch's quarrj' the limestone crops out,
dip flat, with loose slate on top of it. 1,000 feet south of this more limestone
outcrops, and about 50 feet lower the slates show. There is a small cut in
the bottom of the hollow at this place, but it is full of water, and nothing
could be seen. At the saw mill dark blue, thin-bedded limestone crops out
with a dip of 30° to the S. 30° E. There is a small amount of f/raphite on
the bed plates. Just south of this outcrop of limestone, gray slates sliow,
dipping 30° to the noi'tli, and at the roatl leading west from Jacksonville is
gray cement stone dipping 35° to the south.