Johnson, Ronald Carl,  1950- <br/><br/>
A study of the Cretaceous-Tertiary unconformity in the Piceance Creek Basin, Colorado :  the underlying Ohio Creek Formation (Upper Cretaceous) redefined as a member of the Hunter Canyon or Mesaverde Formation / 
by Ronald C. Johnson and Fred May 
 - Washington, D.C. :  United States Government Printing Office,  1980 
 - iii, 27 p. :  ill. ;  24 cm. 
 - Contributions to stratigraphy .
 - Geological Survey bulletin ;  no.1482-B .
<br/><br/>Bibliography: p. 26-27 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Unconformities (Geology)--Colorado--Piceance Creek Basin<br/>Geology, Stratigraphic--Cretaceous<br/>Geology, Stratigraphic--Tertiary<br/>Geology--Colorado--Piceance Creek Watershed
<br/><br/><label>Dewey Class. No.: </label>551.77