Pages authored by Curtis H. Ault:

1. Carbondale Group / Linton Formation
   Type locality, reference section, and use of name: The Linton Formation was named by Wier (1950) for exposures along the tributaries of Lattas Creek in secs. 26 and 27, T. B N., R. 7 W., 4 miles north of Linton, Greene County, Ind.
2. Dugger Formation / Herrin Coal Member
   Type section and use of name in Indiana: The name Herrin, taken from Herrin, Wiliamson County, Ill,, where the coal was extensively mined, was first used by Worthen (1870, p. 93) and later by Shaw and Savage (1912, p. 6), who designated the type section in subsurface exposures in mines near Herrin.
3. Linton Formation / Survant Coal Member
   Type and reference sections and use of name: The name Survant Coal was applied by Fuller and Ashley (1902, p. 2) to exposures near the abandoned town of Survant in Pike County, Ind.
4. Linton Formation / Velpen Limestone Member
   Type and reference sections and history of name: The name Velpen Coal was used by Fuller and Ashley (1902) for the coal in Pike County, Ind., now known as the Colchester Coal Member of the Linton Formation.
5. McLeansboro Group / Shelburn Formation
   Type locality and redefinition of name: The name Shelburn Formation was used by Cumings (1922, p. 525, 529) for the rocks included in the “interval between the disconformity above Coal VII and the base of the Merom Sandstone.”
6. Patoka Formation / Inglefield Sandstone Member
   Type section and use of name: The name Inglefield Sandstone was used by Fuller and Ashley (1902, p. 3) for 80 to 100 (24 to 30 m) of sandstone exposed in a railroad cut in the SW¼NW¼ and SE¼NW¼ sec. 8, T. 5 S., R. 10 W., near Inglefield in northern Vanderburgh County, Ind.
7. Brazil Formation / Buffaloville Coal Member
   Type section: The Buffaloville Coal Member was first named, simply as the Buffaloville Coal, by Franklin and Wanless (1944, p. 89, 90) for the coal that was surface mined near Buffaloville, Spencer County, Ind.