FORMATIONS OF SILURIAN AGE. a7 
John Bigart, about two miles south of the New York State line. This 
Nearpass section is described in detail at this place, because it will be 
used as a basis for the descriptions of most of the following forma- 
tions, with their faunas, of both Silurian and Devonian ages. In this 
section the actual succession of the beds can be worked out in greater 
detail than at any other locality on the Wallpack ridge, although in 
some cases particular beds are better exposed elsewhere. The con- 
tinuous rock exposure in the Nearpass quarry bluff is about 150 feet, 
but between the top of this exposure and the main crest of the ridge 
there are some 700 feet of strata which are not continuously exposed 
but whose harder layers make persistent outcrops. 
Locality 2 A.—The Nearpass section, from below upward. 
Poxino Island Shale. 
2 A’. Buff-colored or yellow, calcareous shale or shaley 
limestone, with dendritic markings along the 
joints and bedding planes. 1 ft. eee 
Bossardville Limestone. 
2 A*. Fine-grained thinly-bedded, gray or blue hme: 
stone. At times so thinly bedded as to be es- 
sentially a calcareous shale; the thin lamine 
being frequently alternately light and dark 
gray, giving to the rock a banded appearance. 
Ideas aay 13 ft. 4 in. 
Decker Ferry Formation. 
2 A*. Highly fossilferous, earthy, somewhat arenaceous 
limestone. 2 ft. 15 ft. 4 in. 
2 A*. Hard, blue or gray, crystalline limestone, with 
many fossils. 14 ft. 2 in. 29 Lie omim 
2 A®. Fissile, caleareous, earthy shale, with some lime- 
stone bands. 6 ft. 9 in. Sond tye ma: 
2 A®. Hard, blue, crystalline limestone, similar to 2 A’. 
8 in. 36 ft) ime 
