Uranium ore-forming systems of the - Geoscience Australia

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Uranium ore-forming systems of the Lake Frome regionMap Symbol Stratigraphic Name Stratigraphic DescriptionNnt Tapley Hill Formation Siltstone, grey to black, dolomitic and pyritic gradingupwards to calcareous, thinly laminated, locally crossbedded;dolomite, grey, flaggy to massive; limestoneconglomerate, intraformational; greywacke.Nntc Mount Caernarvon Greywacke Member Greywacke, with lenticular diamictite.Nntt Tindelpina Shale Member Shale, pyritic, carbonaceous; thinly laminated grey dolomitebeds and lenses.Noc Copley Quartzite Quartzite; siltstone.Noo Wortupa Quartzite Sandstone, grey-green, well bedded; quartzite, pale grey;minor dark grey siltstone; arkosic grit; conglomerate.Nop Opaminda Formation Siltstone, dark grey well bedded; pale green talcose shale;amphibolite; marble.Nou Blue Mine Conglomerate Conglomerate, pink, heavy-mineral laminated, arkosic;minorsandstone; dark grey laminated siltstone.Nov River Wakefield Formation Dolomite; sandstone; siltstone; quartzite.Np Pound Subgroup Sandstone; quartzite; siltstone.Npb Bonney Sandstone Sandstone, fine to medium grained, occasionally coarse,flaggy to medium bedded, silty and feldspathic, crossbedded, ripple marks, small scale slumps, mudcracks,intraclasts; siltstone; quartziteNpbp Patsy Hill Member Limestone, algal-laminated, grey, also wavy/swaley crossstratifiedlimestone, grading up to thick-bedded calcarenitethen to micaceous sandstone. Generally two limestonesandstoneparasequences.Npr Rawnsley Quartzite Quartzite and sandstone, white or light grey, locally flaggyand fossiliferous.Ns Sandison Subgroup Sandstone; mudstone. Marine shelf and slope deposits,some shore face.ns Unnamed GIS Unit - see description No sample: lost in drilling, cavity; sea if offshore.Nsb Brachina Formation Siltstone, shale, red-brown and olive green, laminated,flaggy to medium bedded; alternating with sandstone, finegrained, occasionally coarse grained. All lithologies calciticin part.Nsn Nuccaleena Formation Dolomite, thin, laminated, micritic, with interbedded shalenear the top.Nu Umberatana Group Tillite; sandstone; siltstone; arkose; dolomite; quartzite;conglomerate; shale; greywacke.Nu1 Unnamed GIS Unit - see description Undifferentiated Nepouie and Upalinna Subgroups; includesthe superseded Farina SubgroupNu2 Unnamed GIS Unit - see description Undifferentiated Upalinna and Yerelina Subgroups; includesthe superseded Willochra SubgroupNw Wilpena Group Quartzite; siltstone; shale; calcareous in part.Page 145 of 151
Uranium ore-forming systems of the Lake Frome regionMap Symbol Stratigraphic Name Stratigraphic DescriptionNwb Bunyeroo Formation Siltstone, shale, grey-red to grey-green, partly calcitic, minorfine grained sandstone; dolomite, grey; limestone, grey,lenses, thin bedsNww Wonoka Formation Shale, grey, calcareous; flaggy dolomite, limestone and silt.Ny Yudnamutana Subgroup Diamictite; siltstone; pebbly dolomite;orthoquartzite.Glaciomarine.Ny2 Unnamed GIS Unit - see description Undifferentiated Sturtian glacial sediments. Based on unitProt-s on BILLA KALINANya Appila Tillite Tillite; quartzite; siltstone. Massive, grey.Nyf Fitton Formation Conglomerate; arkose, pebbly; quartzite, white, massive,interbedded with silty shale.Nyh Holowilena Ironstone Hematitic siltstone, purplish red, thinly bedded; red shale;grey siltstone, minor dolomite, medium, grained quartzite,ironstone lenses.Nyp Pualco Tillite Siltstone, dark grey, calcareous, with scattered quartzgrains; quartzite, tillite and minor siltstone; green-grey tillite.Nyw Wilyerpa Formation Siltstone, green. Lower third is fine grained, includes glacialdropstones; middle unit is medium to coarse sandstone;upper unit is siltstone with minor sandstone. Minordiamictite, sandy and pebbly dolomite.Nyww Warcowie Dolomite Member Conglomerate, massive, well rounded pebble and boulderclasts, silty and sandy matrix; dolomite, massive to wellbedded, grey and brown; breccia, dolomitic matrix.O-p Pando Formation Sandstone, pale green-grey, laminated, bioturbated, silty.With glauconite.or Unnamed GIS Unit - see description Orebody or ore zone, undifferentiatedpg Unnamed GIS Unit - see description Pegmatite, undifferentiated.Pgd Daralingie Formation Sandstone, siltstone and coal. Fluvio-deltaic.Pge Epsilon Formation Shale, siltstone, sandstone and coal.Fluvio-deltaic,lacustrine, with transgressive and regressive successions.Pgm Murteree Shale Siltstone, grey-green, shaly, with thin lenses of fine-grainedsandstone. Lacustrine.Pgp Patchawarra Formation Siltstone, coal-swamp; sandstone; minor coal. Fluviolacustrinefloodplain, minor deltaic environments.Pgr Roseneath Shale Siltstone, shaly, with minor sandstone lenses. Lacustrine,diachronousPgt Toolachee Formation Sandstone; mudstone; coal. Mixed-load channels,flood-plainand swamp.PRn Nappamerri Group Red beds; mudstone; siltstone; sandstone; lithic sandstone.Fluvial, fluvio-lacustrine, streams, high sinuosity streams,PRna Arrabury Formation Red beds, sandstone, siltstone, mudstone carbonaceous inpart. Fluvial, fluvio-lacustrine.Q Unnamed GIS Unit - see description Undifferentiated Quaternary rocksQa Unnamed GIS Unit - see description Undifferentiated alluvial/fluvial sedimentsPage 146 of 151
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