Powars, David S.      <br/><br/>
The effects of the Chesapeake Bay impact crater on the geologic framework and the correlation of hydrogeologic units of southeastern Virginia, south of the James River 
by David S. Powars ; prepared in cooperation with the Hampton Roads Planning District Commission.  
 - Reston, Va.  Denver, CO  U.S. Dept. of the Interior, U.S. Geological Survey  For sale by U.S. Geological Survey, Information Services  2000. 
 - iv, 53 p.  ill., maps  28 cm.  
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptoexplosion structures--Chesapeake Bay (Md. and Va.)     <br/>Hydrogeology--Virginia.<br/>Geology, Structural--Virginia.
<br/><br/><label>Dewey Class. No.: </label>557.55  / P881e