Bulletin 14 372 



show through the thiu coating of Champlain clays which forms 

 the soil. The average dip of these rocks is from six to eight de- 

 grees in a northwesterly direction. 



The formations represented are first, the Calciferous, 

 which underlies the southern half of the peninsula and is very 

 fossiliferous at an outcrop near the road about a mile south of the 

 ferry landing. Ecciiliomphalus triangulatus Whitf., Polytcechia 

 apicalis ^\i\\.i . , Asaphus canalis Conrad and a small species of 

 Maclurea are the common fossils. Overlying it are the lower 

 slaty layers of the Chazy, whose contacft is shown on the east 

 shore of Bulwagga Bay about three-fourths of a mile southwest of 

 the fort. North of this nearly the whole point is underlaid by 

 Chazy limestone, which, however, dips under the Black River 

 beds near the northern entrance to the English fort. The Black 

 River is well shown for its entire thickness, 67 feet, and fine op- 

 portunities afforded for collecfting its numerous fossils in the out- 

 cropping ledges and old "marble" quarry between the fort and 

 the rubble dock northwest of it. To the Black River succeeds 

 the Trenton, with a break of only four feet of covered strata be- 

 tween them. Fine collecfting may be had along the shore, where 

 90 feet of the layers are exposed, or in the farm orchard, which 

 is underlaid by the same rock, and where there are many out- 

 crops. Across the lake, on Chimney Point, the top lajT^ers of the 

 Chazy, the Black River and the Trenton are shown. The Chazy 

 is cut off on its eastern side by a fault which is seen on Crown 

 Point a few feet east of the lighthouse and whose general direc- 

 tion is about N. 20° E. On the Point the upper layers have been 

 thrown down to the east of the fault line, the throw, judging 

 from the character of the rock and the fossils, probably not ex- 

 ceeding 100 feet. 



As a result of glacial adtion, the limestones in many places 

 are planed off and almost polished. The directions of the striae 

 vQxy a few degrees. The limits are S. 34° W. and S. 28° W. for 

 the stronger set. The smoothing and gouging is best shown 

 along the shore to the east of the lighthouse. 



