y2 NEW YORK STATE MUSEUM 



have been noted and collected at several places. Increasing meta- 

 morphism to the eastward has destroyed or otherwise effaced traces 

 of organic remains, besides making very difficult any provisional 

 correlation on the basis of lithological resemblance. Folding, fault- 

 ing and erosion have added great confusion. 



The Lower Cambric (Georgian). Strata belonging to this 

 horizon have been described under the heading, '' The conformable 

 series of West Fishkill Hook (see page z|4). The reasons for 

 their pieservation here are not quite clear, but evidently the condi- 

 tions are peculiar. As previously discussed, it seems probable that 

 the Lower Cambric limestone is, as a rule, not in association with 

 the quartzite of that epoch which more probably rests against 

 younger strata at most places. The patches of limestone resting 

 upon the quartzite at Vly mountain and in Matteawan may be of 

 the same age. Some peculiar, very thinly-bedded metamorphosed 

 strata, which were noted standing on end in the swampy areas east 

 of Mount Honness, may represent the shaly member of the Lower 

 Cambric series and these Lower Cambric rocks may have an exten- 

 sion to the north from here in certain rock types that will be 

 described beyond. 



The Beekmantown. Fossils belonging to this horizon were 

 found along the western margin of the Fishkill limestone. They 

 were first noted north of the road from Fishkill Village to Glenham 

 on the farm of Albert Haight, in the second field west of Haight's 

 house, about 300 or 400 yards from the public road. The rock 

 carrying the fossils is of a light gray or steel-gray color and is 

 interbedded with other rock which weathers to a soiled gray. The 

 weathered surface of the former shows many spiral coils. The 

 fresh surface reveals a much altered rock. No traces of the whorls, 

 so plainly visible on the weathered rock, can be seen on the freshly- 

 broken surface ; but the latter is often dotted or splotched with 

 numerous orange or pollen-yellow markings. 



In this field there are two conspicuous ledges of the fossiliferous 

 stratum besides many outcrops of other ledges, for the most part 

 soil-covered. In the northwest corner of the next field to the north 

 on Haight's farm is another ledge of the light gray rock covered 

 with the coiled markings. This stratum was traced by scattered 

 outcrops carrying the coils along and within the edge of the woods 

 and thick brush for a mile to the northeast, to within about half a 

 mile of the road from Fishkill Village to Glenham, and then was 

 lost. Beyond this road it has not been noted, unless it may be 



