244 REPORT UNITED STATES GEOLOGICAL SURVEY. 
ous as also the Mesozoic formations, which, however, appear in the slopes 
to the north and south of this stream. Below the debouchure the valley 
is bordered by well-defined morainal ridges, that on the north side ex- 
tending high up the mountain valley in a strictly characteristic high 
bench resting on the steep slope. The observations at this locality are 
embodied in the following section, the details being derived from the 
isolated outcrops along the stream, but which form heavy edocs in the 
cliff on either side. 
Section in cafion three miles south of Campbells Fork. 
No. 1. Archean; rusty weathered gneissic ledges. 
No. 2. Potsdam; reddish, gray and variously tinted and mottled, 
coarse and fine grained sandstones, in places partially quartzitic, with 
oblique laminated layers, dip 10° to 15° northeastwardly, 100 feet, 
+, exposed. 
No. 3. Quebec; brownish limestone, with thin-bedded arenaceous lay- 
ers interbedded with drab shales below, 25 feet exposed to level of stream, 
but much thicker. 
No. 4. Drab shales, 15 feet +. 
No. 5. Dark drab, yellow mottled, fragmentary, thin-bedded limestone, 
in places showing brecciated structure, outcrops brown weathered, ex- 
posed 15 feet, but evidently thicker. Resembles Upper Quebec lime- 
stone. 
No. 6. Unexposed space. 
No. 7. Drab, brownish-buff and gray, facto thin-bedded lime- 
stone, rough weathered surfaces resembling lower magnesian limestone 
of the Carboniferous and so- called Niagara horizon of ¢ other localities in 
the Se 10 feet +. 
No. 8. Greenish-drab shales, including thin layers of limestone, 30 
feet e 
No. 9. Drab and gray, thin-bedded, fragmentary limestone, of which 
a thickness of 5 feet is exposed, but belonging to a thicker bed, under- 
laid by greenish gray disintregrated limestone. Contains Fistulipora ! ? 
Crinoid remains, Hemipronites, Sc. 
No. 10. Unexposed space probably occupied by the preceding bed and 
additional layers, forming a well-marked horizon 150 feet, + , in thick- 
ness in the mountain ridge, consisting of even-bedded, "putt reddish 
weathered limestone. 
No. 11. Dirty buff reddish tinted, rough weathered, even-bedded mag- 
nesian limestone, in places a breccia consisting of flesh-colored limestone 
fragments embedded in buff matrix, and belonging to a heavy ledge 
of which 200 feet +, are exposed in the neighborhood of the chasm 
which the stream has worn into its mass. Contains crinoidal remains. 
No. 12. Unexposed space. 
No. 13. a, gray or drab, reddish tinted limestone, a heavy bed as seen 
in cliffs bordering the valley ; b, blue shaly layers, 10 feet, +; ¢, drab 
reddish tinted limestone, more or less magnesian below, 200 to 300 feet ; 
d, drab, reddish stained, dirty buff weathered fragmentary limestone 
in thick layers with eale, spar lined cavities, 100 feet +. Dips 10° 
to 15°. 
No. 14. Middle Carboniferous; gray, reddish stained sandstone, with 
obliquely bedded layers, sand concretions and seams of clay. The 
weathered ledges show shallow cavities. 600 feet, +. 
The mountain flank for the next sixteen miles to the southeast pre- 
sents a nearly uniform, moderate, grassy slope, the lower half of which 
is composed of the middle Carboniferous sandstone and more or less per- 
