KENTUCKY GEOLOGICAL SURVEY. 25 



Eden Group. 



In volume 1 of tlie reports of the Geological Survey of Ohio, 

 Orton applied the term Eden to the beds, very largely shale, 

 extending from the River Quarry beds to the Hill Quarry beds 

 in the vicinity of Cincinnati. When the name was given the 

 beds were well exposed along the western side of Eden Park. 

 Even beds near the base of the Eden were shown in Duck Creek 

 at the foot of the slope. The growth of the city and the im- 

 provement of the park have obliterated these exposures. At 

 the present time exposures are frequently presented along the 

 lower slopes of the hills immediately surrounding the lower 

 part of the city and on the sides of the hills back of Newport 

 and Covington. 



In Ohio and Indiana the Eden shales outcrop only on the 

 slopes of the hills adjoining the Ohio river and in the valleys 1 

 of the streams flowing into it. In Kentucky the Eden forms 

 the surface rock of a considerable area, forming a belt front 

 5 to 15 or more miles wide surrounding the Blue Grass' region'. 



In the paper on "The Geology of Cincinnati," the writer divid- 

 ed the Eden into three divisions called upper, middle and lower. 

 Faunal designations were given to these divisions but not geo- 

 graphic names. No good dividing lines were detected that 

 could be recognized readily. The Eden is much more homo- 

 geneous than the Maysville. The upper division in the vicinity 

 of Cincinnati has a somewhat different aspect from the lower 

 and middle divisions. 



In central Kentucky the upper Eden which has there been 

 called the Garrard sandstone, differs considerably from the un- 

 derlying shales. For the latter Mr. Foerste, in a letter to the 

 writer, has suggested the name Million, from a station on the 

 Louisville and Atlantic Railroad. This name will be here used 

 to designate so much of the Eden as lies between the Winches- 

 ter and the Garrard sandstone. The latter formation in central 



