TABULAR VIEW 
OF THE 
SEDIMENTARY ROCKS OF NEW-YORK. 
TACONIC SYSTEMj- . Taconic slate, Magnesian slate, Stockbridge limestone. Granular quartz. 
Champlain Group, . < 
Potsdam sandstone, Calciferous sandrock, 
Chazy and Birdseye limestone. Marble 
of Isle La Motte, Trenton limestone, 
Utica slate, Loraine shales. Grey sand¬ 
stone, Conglomerate. 
NEW-YORK SYSTEM,* 
Ontario Group,_* 
Medina sandstone. Green shales and Ooli¬ 
tic iron ore, Niagara limestone, Red 
shale, Onondaga salt and plaster rocks, 
Manlius water-lime. 
Helderberg Series,* 
Pentamerus limestone,. Delthyris shaly 
limestone, Oriskany sandstone, Encrinal 
limestone, Cauda-galli grit, Schoharie 
grit, Helderberg limestone. 
Erie Group 
? 
{ 
Marcellus and Hamilton shales, Tully 
limestone, Genesee slate, Ithaca and 
Chemung shales and grits. 
OLD RED SYSTEM,.. J 
NEW RED SYSTEM,. | 
Old Red sandstone, with its beds of conglomerate, and its greenish 
shales of the Catskill mountains. 
New Red sandstone, associated with volcanic rocks or greenstone trap of 
the Palisades. 
TERTIARY, 
Blue and yellowish clays of Champlain, and white and yellowish sand. 
Geol. 2d Dist. 
55 
