Geology, ^c, of the Connecticut. 



27 



Rocks observed in contact with 

 those in the leading column. 



■" Wacke* 

 Trap TufF 



Dark bastard Limestone 

 Bituminous Do. 

 Fetid Do. 



Seams of Coal 

 Fine red arg. Sandstone 

 Coarse gray Siliceous Do. 



O 





v>0 



Very Micaceous 

 Black toriuous 

 Bituminous Shale 

 Finer Puddingstone 

 Coarse Do. 



r 



Compact 

 Columnar 

 Amygdaloidal 

 1 Porphyritic 



L 



Do. 

 Do. 



J 



("Granite 



I Gneiss 

 Mica Slate 

 11 Old RedSandstone 

 I Prim. Greenstone 

 Sec. Greenstone 

 Diluvium 

 [_ Alluvium 



Southampton ? 

 Montague, 

 S. H.leadm. 

 Passim. 

 fGill. 

 Passim. 



Do. 

 Enfield, (Ct.) 



'Granite ") East-Haven ? 



Old Red Sandstone ! East and West 



Coal Formation 



I Rock. 

 Gill, Berlin, 



Sec. 



IV. Superior Order. 



17, Diluvium - - Above most or all of the preceding formations, 

 f Oceanic deposites ~) 



Beds of Gravel | 



Do. Clay I Above most of the 



Do. Sand | preceding formations. 



Loam I 



Decomposed Rocks and VegetablesJ 



18. Alluvium.- 



* Prof. Silliman has decided, in the affirmative, the question wheth- 

 er this rock exists along the Connecticut. Vide Journal of Science, Vol, 

 6. p. 51 note. 



t In Conybeare and Phillips' late interesting work on the Geology of 

 England and Whales, (p. 311,) the Bituminous Marie Slate, with the ac- 

 companying limestones, sandstones and conglomerates, is placed in the su- 

 permedial order ; that is, immediately above the rocks of the coal Forma- 

 tion ; and if Ihe Rocks above denominated the Coal Formation should 

 prove to belong to the Bituminous Marlite Formation, according to Mr. 

 Brongniart's opinions, they must be placed in the Supermedial order also. 

 But what becomes of the old red sandstone (rothe todte liegende) which lies 

 immediately below the Bituminous Marl Formation in Germany, and be- 

 low the coal. formation in England.'' These writers (or rather Rev. W. D. 

 Conybeare, who wrote the article here referred to) regard the rothe todte 

 liegende of the Germans, as distinct from the old red sandstone of England. 

 Query — if the rocks along the Connecticut are really the coal formation of 

 Europe, may not the red sandstone east of the river in Chatham, East-Hart- 

 ford, Windsor, &c. be the rothe todte leigende ; and that west of the river 

 the old red sandstone of England? 



This same writer, speaking of the real coal formation, says that " at 

 least ten characters will be found in common between the carboniferous 



