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SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 



78 



ing very exact data as to precise horizon and locality were not 

 observed. To make these collections of scientific value, such detailed 

 information must be supplied. Towards this end, Erwin R. Pohl, 

 of the division, spent several weeks in the summer of 1925 at the 

 noted section along Kashong Creek near Bellona, New York, where 

 the shales and limestone formations of the Middle Devonian rang- 

 ing from the Marcellus at the base of the Hamilton through the 

 Ludlowville, the Tichenor and Moscow divisions and passing into 

 the overlying Tully limestone and Genesee black shale of Upper 

 Devonian age, are well developed in splendid outcrops. Most of 

 these formations abound in fossils and, as a result of the trip, half 



Fig. 18. — Contact between Tichenor limestone (T) and Muscuw shale, 

 Kashong Creek, New York. (Photograph by Pohl.) 



a ton of carefully selected material was obtained. Photographs 

 of these formations, illustrating the stratigraphy and the opportu- 

 nities for collecting, are shown herewith (figs. 18 and 19). 



The Kashong Creek section starts at the shore of Seneca Lake and 

 outcrops in the steep winding banks of the creek for more than three 

 miles upstream to Bellona, 300 feet above the level of the lake. 

 At several intervals the harder sandstone and limestone layers form 

 waterfalls of some beauty. Except in the stream gorge, the region 

 is very heavily wooded so that the collector is confined to the creek 

 bed to penetrate the country. The section is not continuous and as 

 the strata are folded in broad undulations and many of the beds 

 have a lithologic similarity, correlation of the rock is sometimes 

 quite difficult. 



