Orange County, N. Y. 213 



JBryozoans, many; JFavosites Helderbergia H.;* Corals and Cri- 

 noids; Streptorhynchns Woolwortha?ia, H. ;* (5) Strophodonta 

 variastrata Con. ; Spiriferina perlamettosus H.;* Atrypa reticula- 

 ris Linn. ;* Pentamerus galeatus Dal. ;* Orthoceras sp. ?f 



These beds dip N. 65° W. ^>85 and a thickness of about 

 fonr meters is exposed here. 



Beginning at the cross-road and extending .northward for 

 several hundred meters, overlying beds are seen in the steep 

 hill-side, and at 6 on the map the following remains were 

 found. 



Bryozoans, many ; Streptelasma stricta H. (25 mra in length) ; 

 Orthis oblata EL, three casts ; Streptorhynchus Woohoorthana* 

 H., two valves; Strophomena rhomboidalis Wahl.,* fragments; 

 Spiriferina perlamettosus* H., four valves ; Meristella leevis Con., 

 one impression ; M. arcuata, H., one cast. 



Northward, these beds run under the drift; but south ward they 

 appear to be continued as thinly bedded, soft, shaly limestones, 

 of light color, and superficially intercalating with beds of iron 

 oxides which extend with them to the southern termination of 

 the hill forming its western border. They are exposed only 

 in the several open cuts from which the iron ores have been 

 worked. In cuts number 3 and 4, the ore is entirely in 

 this limestone; but in 2 and 1, the ore lies along the line of 

 contact with a series of brown shales, a few meters in thick- 

 ness which are separated by a considerable mass of bright, red 

 shales from the sandstones and conglomerates of the eastern 

 side of the hill. These relations are shown in detail upon the 

 map. The shaly beds yielded but one fossil after very thorough 

 examination, and this was a section of a Crinoid stem showing 

 no generic characters. 



A notable feature of these beds, and of those of the shaly 

 limestone, is an anticlinal fold along their extreme western bor- 

 der ; the steep southeast dip abruptly changing to a gentle one 

 in the opposite direction. The fold is first noticed in the en- 

 trance to cut 5, but it is finely exhibited in cuts 2 and 1 (see 

 section on map), where the change is very abrupt and the shaly 

 limestone but little disturbed; the brown shales in the east 

 wall of both cuts show great 'disturbance. This fold appears 

 to be a local crumple ; it will again be referred to in a sub- 

 sequent paper on the structure of the entire district. 



The shaly limestone may extend out under the meadows on 

 this side of the hill; t^e thickness in sight is about ten meters, 

 including the ore beds. Wherever exposed, these strata con- 

 tain characteristic Delthyris-shaly fossils ; but in cut 2, on the 

 western side of the fold, the finest specimens have been 



* Also noted by Dwight. 



f Dwight found a specimen recognizable as 0. longicameratum H. 



