CHAPTER AL 
THE OVERTURNED MEASURES. 
The Overturned Measures are situated to the west of 
Montevallo and to the northwest of Brierfield depot and 
rolling mills. 
The Overturned Measures are bounded on the north by 
the fault that separates them from the Montevallo basin 
and Dailey Creek basin ; on the east by the great boundary 
fault that separates the Carboniferous and Cambrian meas- 
ures ; on the south by the same great boundary fault that 
follows along the south edge of the Cahaba Coal Field. 
The following is a rough outline of the boundary of the 
Overturned Measures: Commencing at the great boundary 
fault about three hundred yards southeast of the Baker 
mine entrance ; thence southeastward along the fault that 
separates the Overturned Measures from the measures of 
the Montevallo and Dailey Creek basins, about two and a 
half miles; thence along the fault nearly due west about 
three and a half miles to the middle of section 5, township 
24, range 11 east ; thence southwestward along said fault to 
the half mile post on the south side of section 15, township 
24, range 10 east, (this point is at the south boundary of 
the coal field;) thence eastwardly and northeastwardly along 
the boundary fault to the southwest corner of section 5, 
township 24, range 12 east, (this point is nearly opposite 
Thompson’s mill on Shoal Creek;) thence along the bound- 
ary fault nearly due north, to the point of commencement, 
three hundred yards southeast of the Baker mine entrance. 
The Overturned Measures are drained by branches run- 
ning into Shoal Creek ; by Little Mayberry Creek, Big May- 
berry Creek, east prong of Four Mile Creek, west prong of 
Four Mile Creek, Alligator Creek, and some small branches 
running into Little Cahaba river. 
The most prominent ridge in the Overturned Measures is 
the Conglomerate ridge, immediately south of and parallel 
