48 Geology, &c. of the Connecticut. 
the ¢g enstone is here disclosed by the abrasion of 
2 a iperiasuinbent sandstone—and ae: felloeag the 
line of junction a few rods on the wavs side of | 
brook, he will find the sandstone in place lying directly on 
the greenstone, also in place. To one who om been accus- 
tomed to see this Jatter rock mounting above every other 
and monopolizing so muchspace forits broken fragments, it 
must be gratifying to see it at last pressed down by a supe- 
rior stratum, and buried byt the debris of a higher rock. “ei 
two fc) 
ther broo! 
oe 
Lee ‘orn away the. sandstone, and the greenstone oe 
in ita tke ihiey ata get = = sctiet cen contact of th 
“stove. 7 fave been thus: part 
of greenstone in that place, 
- and trials to which the ceologist 
the trap ranges of the Conn cat t 
necessary for th 
rea altitud 
the west, and a gradual Be 
on the east. Where it crosses Decriield river it has every 
appearance OF vast dyke: although the sandstone rocks 
do not appear immediately in contact with it. From the 
top of the greenstone to the bottom of the river is more 
than two hundred feet. The range continues to’ 
in Gill, where, as before observed, it terminates, and Seabee 
‘cetded by the red sandstone or conglomerate, And | here 
would I mention another fact i in regard to. the green: 
and rocks of the co: 
nar above the for rmer, but they alternate with one a i e - 
at ee ene pass: round the northern hag of 
the inge firs foil 
