242 



NEW YORK STATE MUSEUM 



Production of sand and gravel 





1916 



1917 



1918 



MATERIAL 



SHORT 

 TONS 



VALUE 



SHORT 

 TONS 



VALUE 



SHOKT 

 TONS 



VALUE 





4,331 603 

 661 673 



38 144 



337 767 

 2 728 910 



S941 88/i 



570 898 



16 430 



134 63? 



9S0 979 



3,836 257 

 650 427 



4 540 



209 2,?7 



2 418 562 



$975 512 



808 550 



4 210 



103 136 



I 155 039 



1,997 091 

 519 683 



a 

 261 189 

 I 394 772 



S5SI 83s 



Molding sand 



Fire or furnace sand 



770 512 



a 

 IJ18 844 





675 281 







Total 



8 098 097 



$2 644 829 



7 119 013 



$3 046 447 



4 172 733 



$2 176 472 







a Included under other sand. 



References 



Geology of New York. 



Report on the Second District 



Emmons, Ebenezer. 



1842 

 Hall, James. Geology of New York. Report on the Fourth District, 1845 

 Mather, W. W. Geology of New York. Report on the First District, 1845 

 Newland, D. ,H, Albany Molding Sand. Trans. Amer. Foundrymen's Assoc, 



V. 24, 1916. Also, N. Y. State Mus. Bui. 187, 1916 

 Sarle, Clifton J. Economic Geology of Monroe County and Contiguous Ter- 

 ritory. N. Y. State Geol. 22d Ann. Rep't, 1904 

 Vanuxem, Lardner. Geology of New York. R.eport on the Third District. 

 1842 



SLATE 



The principal slate quarries are in Washington county near the 

 Vermont border. The district is really an extension of the more 

 important Vermont area, as there is no natural boundary between 

 the two and the same beds may be worked on both sides of the line. 

 The productive district includes parts of the towns of Salem, Hebron, 

 Granville, Hampton and Whitehall and in general extends from 

 the Battin kill on the south to the northern limits of Washington 

 cotmty. The extreme length north and south is approximately 25 

 miles; the width varies from 6 miles in the north to 12 miles at the 

 south end. 



Geology. The area is one of extreme complexity in its geological 

 structure. Besides the slates there are present shales, limestones, 

 quartzites and sandstones, all of which have been involved in moun- 

 tain folding and to a varying extent metamorphosed. The work 

 of T. Nelson Dale has provided most of the information available 

 on the geological structure and general features of the slate district 

 (see appended list of references) . 



The formations fall into two main groups — Lower Cambrian and 

 Ordovician. In the former belong sandstones, calcareous rocks, 



