00998nam a2200265Ia 4500001000700000003000500007005001700012008004100029010001500070020002800085040001300113043002100126050002600147082001700173100002800190245020300218260004800421263000900469300001600478490005900494650006800553650003500621650004200656700003400698222094BIBL20160527200826.0990416s1999 vauabd f000 0 eng  a 99015541  a0607923415 (alk. paper) aDLCcDLC an-us-mdan-us-va00aQE613.5.C48bP68 199900a557.55/12211 aPowars, David S.2Local14aThe effects of the Chesapeake Bay impact crater on the geological framework and correlation of hydrogeologic units of the Lower York-James Peninsula, Virginiacby David S. Powars and T. Scott Bruce. aMadison, WI.bU.S. Geological Surveyc1999. a9904 a82 p.bill. 0aU.S. Geological Survey professional paperv16122Local 0aCryptoexplosion structureszChesapeake Bay (Md. and Va.)2Local 0aHydrogeologyzVirginia.2Local 0aGeology, StructuralzVirginia.2Local1 aBruce, T. Scottd1960-2Local