40 NEW YORK STATE MUSEUM 



assigning the exposures at the crossroads at South Greenfield to the 

 base of the Little Falls dolomite, then the section closes in beds not 

 far from the top. The section has already been published and is 

 here repeated, numbered in continuation of the Theresa section 

 already given. 



FEET INCHES 



40 Exposures at Hoyt quarry : hard, blue to black, 

 subcrystalline to crystalline magnesian lime- 

 stone, largely of dolomite rhombs with calcite 

 cement; i foot from the top is a Cryptozoon 

 reef bed, and the section rests on another such 

 bed, which is the same as the one shown by the 

 roadside (plates 3 and 4) ; the rock is partly 

 thin and partly thick bedded ; some of the layers 

 show coarsely crystalline calcite cement, giving 

 large glittering cleavage faces on freshly broken 

 surfaces ; trilobites, gastropods and Lingulella 



are found throughout 25 .... 



One-third of a mile north of the Hoyt quarry is 

 another quarry face by the roadside, capped by 

 the same Cryptozoon layer which forms the base 

 of the Hoyt quarry section, but was not included 

 in the 25 feet of that section. 



39 Dark blue, subcrystalline, magnesian limestone 

 full of Cryptozoon ; frequent black, oolitic 

 grains i 5 



38 Massive beds of blue, finely crystalline, magnesian 

 limestone, with occasional sand grains; trilo- 

 bite fragments " . 5 5 



37 Thin bed of calcareous sandstone, weathering to 



brown, rotten stone 5 



36 Two beds of dark blue, crystalline, magnesian 



limestone with some sand grains 2 5 



35 Layer of dark gray, calcareous sandstone i 7 



34 Light colored, vitreous sandstone with films of 



darker, calcareous material i 3 



33 Dark colored sandstone with calcareous cement 4 



Four-tenths of a mile northeast of this are two 

 considerable cuts along the railroad in which the 

 following section is shown (plate 7). The hiatus 

 is estimated at 20 .... 



