EECAPITULATIOlSr OF PALEOZOIC FORMATIONS. 145 



in Pleasant or Perrj' Park, the series to which I refer being apparentlj' included by 



Hayden in the Carboniferous. 



We have two sections of the Perry Park beds, one by Peale and the other by 



Lee. These have been discussed and a certain lack of agreement pointed out. 



Peale's series is as follows: 



Section at Perry Park. 



Feet. 



8. Fossiliferous limestone with chert pebbles 6 



7. Irregular limestone, with pebbles of chert and limestone 3 



6. Red calcareous sandstone 3 



5. Compact red sandstone 15 



4. Dark-purplish cherty limestone _ 3 



3. Red calcareous sandstone 4 



2. Verj' coarse white sandstone 80 



1. Granite. 



This first is of Carboniferous age, the equivalent of Cross's Millsap limestcne. 

 It seems to me probable that the lower beds of this section, possibly even from 2 to 

 6, inclusive, may be Cambrian. 



Lee found some quartzites overlaid by cherty limestones, not in Perry Park 

 itself, but some distance to the south. The quartzite he believes to be of Cambrian 

 age, and the same as the Cambrian quartzite of the Pikes Peak quadrangle. The 40 

 feet of coarse-grained crumbling sandstone at the base of his Carboniferous section 

 in the park is evidently the same as the basal sandstones of Peale's section, which 

 seem by analogy with other sections to he Cambrian. 



In the vicinity of Colorado Springs, Peale gives a section, which is No. 3 on page 

 201 of the same report. The series here is as follows: 



Section near Colorado Sprint/s. 



Feet. 



5. Brick-red sandstone, w^ith green layert^ 20 



4. Coarse gray sandstone 6 



3. Coarse dark-green sandstone 4 



2. Coarse grayish-white sandstone 20 



1. Granite. 



Peale says (p. 202): "Beds Nos. 2 to 6 I have referred to the Potsdam group, 

 while those just above are undoubtedly of the Quebec group, as in beds lithologically 

 the same on the western .side of the range I found characteristic fossils." This is 

 not altogether conclusive, but certainly the correlation suggested api^ears the most 

 satisfactorj^ one. Yet it is possible (though not probable, since that formation is not 

 found in Manitou Park) that these lower beds are the Harding sandstone, which 

 Cross says on the southeast side of the range rests locally on the basal cherty 

 limestone (Cambrian), or even on granite. The beds immediately above 5 are red 

 limestones, from which no fossils are known, but which Peale refers to the 

 14364— No. 16— O:^ 10 



