Geochemical reconnaissance of late Proterozoic volcanic and mafic plutonic rocks of the Al Awshaziyah quadrangle and related rocks in the Qufar quadrangle, Northern Arabian Shield / 
by Gerhard W. Leo. 
 - [Washington]:   [United States Government Printing Office],   [1986].  
 - iii, 16 p. :  maps, tables ;  28 cm. 
 -  1680 .
<br/><br/>Includes bibliographical references (p. 15-16). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry--Saudi Arabia--Awsajiyah Region<br/>Geochemistry--Saudi Arabia--Qufar Region<br/>Geology, Stratigraphic--Proterozoic<br/>Volcanic ash, tuff, etc--Saudi Arabia--Awshaziyah Region<br/>Volcanic ash, tuff, etc--Saudi Arabia--Qufar Region
<br/><br/><label>Dewey Class. No.: </label>551.909538