LIME AIST) CEMEI^T IT^DUSTEIES 801 



1 Encrinal limestone containing nmnerons crinoid stems. 

 Light gray in color but often spotted with red. 



Samples for analyses were taken by the Avriter from a quarry 

 by a limekiln, li miles east of Lockport and along the canal. 

 The rock in this excavation is a light gray, fine grained, massive 

 limestone containing numerous fossils, which often occur in large 

 aggregates. The upper layers of the quarry are thinner and more 

 argillaceous than the lower ones. 



The composition of the J^iagara limestone in this quarry is 

 shown by the following analysis made by D. H. E^ewland. 



Silica 7.09 



Alumina 2 . 57 



Ferric oxid .96 



Lime carbonate 56 . 19 



Magnesium carbonate 33 . 42 



100.23 



South of the to^vn of iN'iagara Falls the iN'iagara limestone is 

 quarried for burning into lime. The quarry is owned and oper- 

 ated by William Messing. The following is an analysis of his 

 stone made by the writer. 



Lime 32 . 21 



Magnesia 17 . 45 



Alumina 1.3 



Ferric oxid .75 



Silica :. . 1.7 



Carbon dioxid 46.79 



100.2 

 Oneida county^ 



The Helderberg limestones extend across the southern part 

 of the county and are crossed by both the Utica, Binghamton 



1 Prosser, G. S. & Cumings, E. R. Sections and thickness of the Lower 

 Silurian formations on West Canada creek and in the Mohawk valley. 

 {see 15th an. rep't N. Y. state geol. p. 23) 



White, T. Gr. Eeport on relations of the Ordovician and Eo-Silurian rocks 

 in portions of Herkimer, Oneida, and Lewis counties, {see 51st an. rep't N. Y. 

 state mus. 1 : r21 ) 



Vanuxem, Lardner. Geol. 3d dist. N. Y. 1842. 



