...upper portion of the Maquoketa formation, the heavy beds of the Devonian appearing in some places quite conspicuously above the Maquoketa, well up on the...of the stream, immediately below the mill dam, at Vornon Springs; and all the way to the east line of the county these beds may be seen in the bluffs...

...at the old town of Lime Springs. Above this point the dip of these beds soon carries them below tho level of the stream. 2, The member of the Devonian...the east line of the county these beds may be seen iu the bluffs of the Turkey river, overlying the Productella horizon. As the county line is approached...

...beds exposed along roadway; do not run more than six inches in thickness. Occasional shale partings ranging from a few inches to more than a foot in thickness appear throughout the section 25 5. Shale, black, carbonaceous 2 4. Talus slope (probably shale, in...

...beds exposed along roadway; do not run more than six inches in thickness. Occasional shale partings ranging from a few inches to more than a foot in thickness appear throughout the section 25 5. Shale, black, carbonaceous 2 4. Talus slope (probably shale, in...

...Continental sandy loam.—Continental sandy loam is pronounced reddish-brown or dull-red sandy loam ranging from a few inches to more than a foot in thickness. In most places it has a thin pale-red surface veneer of loose sandy material. The subsoil is tough...