Petrology and physiographic evolution of the Ocate volcanic field, north-central New Mexico 

 - Washington :  U.S. Govt. Print. Off.,  1988 
 - x, 30, 15 p. :  ill. (some col.) ;  29 cm. 
 - U.S. Geological Survey professional paper ;  1478 .
<br/><br/> Folded col. map in pocket 
<br/><br/>A. The Ocate volcanic field--description of volcanic vents and the geochronology, petrography, and whole-rock chemistry of associated flows / by J. Michael O'Neill and Harald H. Mehnert -- B. Late Cenozoic physiographic evolution of the Ocate volcanic field / by J. Michael O'Neill 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Volcanic ash, tuff, etc.--Sangre de Cristo Mountains (Colo. and N.M.)<br/>Volcanic ash, tuff, etc.--New Mexico<br/>Geology, Stratigraphic--Cenozoic
<br/><br/><label>Dewey Class. No.: </label>552.209789