MORGAN COUNTY. 155 



FEET. IN. 



1. Surface soil and drift clay , 22 



2. Light colored shale 52 



3. Limestone, containing Hemipronites crassus, Petalodus deah-uctor, and a 



few other fossils 10 



4. Black slate, containing Aviculopecten rectalaterarea, Cardinia, and impres- 



sions of plants 1 6 



5. Goal 3 



6. Fireclay 8 8 



7 Buff or yellowish, close-grained limestone, breaking with a slightly con- 



choidal fracture 3 



No. 2 of this section, is probably the shale which has been mentioned as out- 

 cropping along the stream below this point. 



No prominent exposures of rock occur on any of the tributaries of Sandy 

 creek, lying to the southward. The nearest point where they appear, is on the 

 left bank of Coal creek, in the northwest corner of section 16, township 14, 

 range 10, where a foot or two in thickness, of a light colored calcareous shale, 

 or shaly limestone, has been laid bare by the wash of the stream, in the over- 

 hanging bank. The same occurs at several points below, along the stream, and 

 at one place in the northwestern part of section 29, I obtained a few fossils, 

 Spirifer camcratus, Athyris subtilita, Chonetes mesoloba, Productus longispinus, 

 etc. A little farther down stream, near the center of the south part of section 

 i30, is Fuller's coal bank, at which locality I took the following section : 



FEET. 



1. Light grayish limestone, containing a few fossils, mostly the same as those men- 



tioned above 15 



2. Argillaceous shale 2 



3. CoalNo.3? 4 



4. Fire clay passing downwards into nodular argillaceous limestone 5 



5. Argillaceous and arenaceous shales 4 



6. Clay, containing nodules of bituminous limestone, exposed 4 



This section was made up along a line of exposure of more than one hundred 

 yards in length, and the thickness of the different beds are an average, and not 

 exact measurements taken at one point only. The coal ranges in thickness 

 from three feet eight inches to four feet, and is overlaid at one or two points 

 with decomposing black slate. Perhaps this is generally the case, but the ex- 

 posures do not show it well. The limestone No. 1 is well exposed, and the 

 vein of coal has been slightly worked by stripping in one of the side ravines a 

 little distance below the main coal banks, and the limestone here affords the 

 same fossils as were mentioned before, together with many large Productus 

 punctatus, P. scabriculus. 



Following down the stream, below the coal bank, we find a reddish, shaly 

 Bandstone exposed in its bed, whiph, at a point about a mile below, forms a per- 



