J. D. Dana—Taconic Rocks and Stratigraphy. 403 
east of Great Barrington southeastward to the locality in the 
Konkaput valley affording section 23, is parallel to the Monu- 
ment Mtn. section, and about three miles distant ; it is similar in 
rocks and small dip, but reversed in dip, and in having the 
limestone at the west end nearly vertical in bedding. They 
seem to be counterparts, in the system of flexures of the same 
rock strata. 
eee 
> jetties SA 
Ss 
Monument Mtn: Jdeal Section. 
While the above view‘of the flexures affords a sufficient ex- 
planation of the stratification, it may not be the right one. 
There may be actually two distinct beds of quartzyte, as the 
figure represents ; or possibly, the beds may be faulted at the 
middle of the section, and a displacement sufficient to make 
apparently two beds of quartzyte out of one; and this last 
view nas in its favor the fact of much irregularity of dip on the 
line near the top. Again, there may be a reversal of the fold, 
making the quartzyte underlying quartzyte or Cambrian, and 
the schist of the mountain an inferior stratum of the same forma- 
tion, with the limestone above the quartzyte and also an over- 
lying stratum of schist. 
Sections 35, 36. From the village of Lee. Section 35 runs 
eastward through the western and larger of two nearly parallel 
areas starting from a point near the M. H. church in the village. 
Hard quartzyte is overlaid by arenaceous or very quartzytic 
mica schist, and this again by quartzyte. Section 86 is from 
35. Village of Lee, E. of Meth. Church. 
the western side of a more eastern ridge, just east of the 
village; it is remarkable for the absence of quartzyte, and the 
normal character of the mica schist, notwithstanding the near- 
ness and close relations of the two areas. At the top of this 
ridge the schist bends over rather abruptly and becomes nearly 
vertical. It may be faulted. 
