276 
IOWA ACADEMY OF SCIENCE 
This is the only known locality in the state of Iowa, where a 
complete section of the Braddyville beds is shown in outcrop. 
It includes numbers eight to eighteen, inclusive, in this section. 
At the present time the base of the outcrop is concealed by 
talus, and the section given above is that described by Chas. A. 
White in Iowa Geological Survey Keport of 1870, slightly 
modified. 
COMPOSITE SECTION OP OUTCROPS IN THE VICINITY OF 
STENNETT, IOWA. 
No. Feet 
12. Limestone, residual 5% 
11. Shale, gray, calcareous 
10. Limestone, gray 1% 
9. Shale, gray, argillaceous 314! 
8. Limestone, variable 5 
7. Shale, yellow 1 
6. Limestone, blue, cherty 6 
5. Shale, parting 
4. Limestone, variable 5 
3. Shale, argillaceous 114 
2. Shale, carbonaceous 3 
1. Limestone, shaly 2 
Total 34% 
The Forbes limestone is represented by numbers four to eight, 
inclusive. The carbonaceous shale number two is universally 
present, underlying this limestone, and has been prospected for 
coal both at Wilson section and near Stennett. 
The Missouri Geological Survey has correlated the Forbes 
limestone with the Deer Creek limestone of Kansas, and uses 
this term for the Forbes limestone. As the Iowa outcrops of this 
limestone are upwards of one hundred miles distant from the 
type section of the Forbes limestone, it is by no means certain 
they represent the same horizon. Under these circumstances, 
the Missouri Geological Survey having abandoned the use of 
the term Forbes, it is proposed that this limestone be named 
the Stennett limestone. Until the different formations of Iowa 
have been actually traced in the field to those of Kansas, it is 
preferable that they be designated by local names rather than 
by those of formations several hundred miles distant. 
The City Bluffs beds of Broadhead are situated two miles 
northwest of Burlington Junction, Missouri. 
