9 6 
The American Geologist. 
August, 1905 
it with certainty. At Reece, Beaumont and Grand Summit 
excellent exposures of all the important limestones of the 
entire section are shown, but nowhere is a stone with all 
the characters of the Cottonwood limestone to be found. 
The fauna of the general horizon is somewhat similar to 
that of the Florena shales but it is distributed through a 
fairly wide range of rocks and is nowhere so pronounced 
as in the northern localities. In short the Cottonwood 
limestone ceases to be of great value as a horizon marker 
south of the latitude of Bazaar. 
The stratigraphy of this region can best be compared 
with that farther north by detailed sections. The regions 
near Reece, Beaumont and Grand Summit furnish excellent 
exposures of the rocks concerned in the Flint Hills escarp- 
ment. North of this region the flints have been so con- 
stantly associated with this escarpment that it has led to 
some errors of observation in its southern prolongation. 
For this reason the sections near the places just named are 
given in considerable detail. 
SECTION FROM REECE TO SUMMIT SIDING. 
70. Limestone, massive with many chert concre- 
tions in layers 15± ft. inches 
69. Limestone, very cherty, covered with fallen 
chert 3 " 
68. Limestone containing 3 or 4 layers of flint. 
Fusulinas 3 " 6 
67. Limestone, shaly 3 
66. Shales, calcareous 
65. Limestone, shaly 1 
64. Shales, blue calcareous 2 
63. Limestone, shaly 2 
62. Shales, yellowish and greenish 7 
61. Covered 8 
60. Limestone, hard, massive 3 
59. Shales, fossiliferous 3 
58. Limestone, rotten, and fossiliferous 1 
57. Shales, yellowish, indurated, fossiliferous.... 9 
56. Limestone, rotten, and calcareous shales.... 3 
55. Shales, green and yellowish 8 
54. Shales, maroon 8 
53. Shales, bright green 2 
