01195cam a22002891  4500001001300000003000400013005001700017008004100034010001700075035001900092040002100111043001200132050002400144100003800168245010900206260004800315300007900363490004100442500013400483500003500617500009100652504003100743650002800774650002300802700006300825999001700888gs 41000033 DLC20260227111346.0800820s1941    dcuabf   b   f001 0 eng    ags 41000033   a(OCoLC)6638781  aDLCcICharEdDLC  an-us-co00aTN24.C6bS5 no. 9111 aSingewald, Quentin Dreyer,d1902-10aOre deposits in the vicinity of the London fault of Colorado,cby Quentin D. Singewald and B. S. Butler.  aWashington,bU.S. Govt. Print. Off.,c1941.  avi, 74 p.bincl. illus., tables, diagrs. 21 pl. (incl. fold. maps)c23 cm.0 aU.S. Geological survey. Bulletin 911  aAt head of title: United States Dept. of the Interior, Harold L. Ickes, secretary. Geological survey, W. C. Mendenhall, director.  aEight folded plates in pocket.  aPrepared in cooperation with the state of Colorado and the Colorado metal mining fund.  aBibliographical footnotes. 0aOre depositszColorado. 0aGeologyzColorado.1 aButler, B. S.q(Bert Sylvenus),d1877-1960,ejoint author.  c27697d27697