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\iOL. XX TIIE ARCTIC CIRCULARl6J.U. l'icGlynn continued a study of the Proterozoic:i{onacho Croup in an nrea south of Gre;rt Slave [,ake. Thisirro-jcct is designecl to study the stratigraphy, structure, andscdinrcntary petrology of the rocks to correlatc them withsirni lur rocks in ttre region and to dcterniine their agerel ati on-ships wi th adj acent metamorphi c and igneous rocks .A number of uraniun showings and collper nrospectsirave been discovered; nrost are i-n basernent rocks near theircontact rvith Nonacho sediments and are fotrnd in shear andbreccia zones. In addition to looking for such featuresprosilectors should consider the possibility that the NonachoGroup contains relict placer depos j.ts.Several projects were carriecl out lrrsst of lludson Bay.R.1'. Bel tr continued a study of the Precambrian ilunr'itz Groupof scdimentary rocks irctween ilankin Inlet and l{al1ace River.K.E. Ilade carried out reconnaissance mappint of Ennadai Lake andllueltin Lake rnap-areas. <strong>The</strong> Proterozorc sediurcntary rocks inthese areas appear to be correlative rt'ith the llurwitz Group butin this area thcy are overlaln unconformably by polynricticcongiomerate and arkose to subgrepvacke contai-ning scatteredpelrb1cs. No rnineral occurrences of economic interest t{€recliscove:recl althoueh man-y* of the c:onglotnerate exposures t{eretestcd for radioactirrity.A. David-son mapped Eskimo Point and Darvson Inlet areas,a regi on tirat covers the southern part of tJrer northeast end ofthc l,nnadai-Rankin Inlct green-stone be1t. This belt containsextens i rre linear, hi gh aeronlagnetic anomalies caused bysedirnentarf ircn-forrnation. An annular nagncti c anornaly,2.5 nriles :rcross ju-st north of the mouth of htallace ltiver, issi rni lar to anonali cs rr,ssociated rvith alkalic plutons andcarbonatites and rnight thus be a possible source for rare-carthrninerals. A .sirnilar pluton on the northeast sicle of KaninakLrke b/as rcported in 1968.l'he studi' of more recent geological features alsol-ct-1-)ivccl cor-lsitlerdl,rlet attentjon. llarian Kuc corttrntretl a,r exaninationof nc:rt deriosits ancl fossii mosses f-rom Banks Island. 0,L. fiushcsstutl j c:d thc i]uatcrnat'\/ eeoloq)' we-st of Liackenzic Rivcr, ittirarticular tlic ui',r)('l'liniit of l,aurentidc tI;rciations anci thr:crtcnt of f-orrner rrallcy glacicrs that originatecl in the ilat:l,.eltzie-',iountlr.ir-rs. {trganic deposits, from a feir' fcet. tr: 10 feret t}rick,
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