284 NEW VOUK STATE MUSEUM 



Ladder road and tho only one cliinbiii*:: these precipitous cliffs 

 belwcen New Salem and Altainoiit. The Tentaculite [Manlius] 

 and Pentanierus [('i)eyniansj limestones form the i>romiuent 

 clitT which extends from New Salem around the northern end 

 of ilie iiiou'iiains to Altaiiioni ; Init on the hiji^her terraces anl 

 hills to the south the later formations are found, and their 

 distribution is shown on the " rreliminary (Jeolo^ic nuij) of 

 Albany (\)unty, N. Y.", by N. H. Darton.^ Alonj,^ the Indian 

 Ladder road are exiK)sures of the upper part of llie Lorraine beds, 

 with ma<»niticent cliffs of Tentaculite [Manlius] and Pentamerus 

 [Coeymaiis] limestones; while to the east and south the succeed- 

 in<>- hills show the later formations up to the lower part of the 

 Hamilton, which forms the upper part of Signal station hill,^ 

 The section from Meadowdale to the top of Signal station hill is 

 as follows [in descending order] : 



Feet Total 



Hamilton; arenaceous shales to thin sandstones at 

 the base; but mainly shales to the top of Signal 

 Station hill. Some specimens of the small Ham- 

 ilton lamellibranchs, as P a 1 a e o n e i 1 o c o n - 

 strict a (Con.) Hall; Nucula bellis- 

 t r i a t a ( Con. ) Hall ; Nuculites triqueter 

 Con.; N. oblongatus Con. and others, are 

 found in the shales in the upper part of this hill. 

 Exposed 130-1495 



Covered 20-1365 



Marccllus shale; black argillaceous shales exposed 

 along the road up the hill to the south of the New 

 Salem road and in the gullies on the northwestern 

 side of the hill 170-1345 



Onon(la<ia limestone; well shown in the ui>per part of 

 the terrace to the north of the New Salem road. 

 The upper part of the formation forms the floor 

 of this road for nearly two miles on the plateau. . 98-1175 



Schoharie </rit; shown on a south road at the base 



of the light gray Onondaga limestone 3J-1077 



Esopus shale: finely exj)os('d along the road to the 

 east of the brook and house. Another excellent 

 exi)0sure occurs in the glen to the east of the 

 east (Mil north and south road which on the 

 ])lateau connects the Indian LaddtM* and New 

 Salem roads 100-1073J 



*N. Y. StMto (Icol. 1.">tli All. Kop't. lHOr>. 



-Tlio station wns cjiIUhI lI(M(lorl)crjx and is 1S*2.'^ foot A. T. (Final results 

 of the TrianK'ulation of the N. Y. State Survey. 1887, p.iii). 



