20 20 20 40 20 20 40 20 20 20 40 40 20 40 40 80 40 40 40 20 20 40 40 60 60 60 40 60 60 40 60 20 20 40 40 40 40 20 20 20 20 20 20 40 60 40 60 40 20 40 60 40 80 60 60 100 100 100 120 100 80 80 80 120 100 80 80 60 60 80 60 80 100 80 100 120 80 160 100 140 120 60 140 120 80 60 100 120 60 80 60 40 40 40 100 60 60 80 80 60 100 60 100 80 100 120 80 100 100 120 140 60 120 100 120 140 140 120 120 100 120 100 140 120 140 100 80 60 80 100 60 80 80 80 60 100 140 100 80 160 120 160 140 60 40 100 100 80 60 60 60 60 80 100 100 60 40 80 60 120 80 40 80 40 60 40 20 40 60 40 20 40 60 60 40 20 100 140 80 120 100 80 120 100 120 140 140 60 80 100 140 160 120 120 80 60 80 160 100 100 140 100 100 60 40 40 100 140 80 120 80 20 100 60 60 120 60 60 40 60 120 80 60 100 60 60 60 60 100 20 80 60 80 60 60 40 40 40 40 40 80 20 20 40 20 40 40 40 100 80 PORT ROBINSON PORT WALCOTT Rocky Creek Bouguer Entrance EAST HARDING RIVER LITTLE SHERLOCK RIVER GEORGE RIVER LITTLE GEORGE RIVER JONES RIVER Payne Gully Miller Creek EAST HARDING RIVER Murray Camp Creek Basset Bend Creek Popes Nose Creek Sams Creek HARDING RIVER HARDING RIVER HARDING RIVER HARDING RIVER EAST HARDING RIVER I N D I A N O C E A N RIVER JONES 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 I N D I A N O C E A N S H E R L O C K B A Y Rocky Creek I N D I A N O C E A N 20 10 JONES RIVER LAKE POONGKALIYARRA 10 WHITE QUARTZ HILL DE WITT HILL BLACK HILL Warambie George Bridge WEST NORTH COASTAL HIGHWAY Jones Bridge ROEBOURNE WITTENOOM ROAD Roebourne WEERIANNA HILL MT GREGORY NATIVE HILL MT ADA Woodbrook Lockyer Gap MT ROE MT HALL CHERRATTA ROAD pipeline NORTH WEST COASTAL HIGHWAY Iron ore loader Cossack WICKHAM Point Samson Reader Head Point Samson SAMSON HILL Cape Lambert MT DICKSON WEST HILL Powerline (132 KV) ROBE RIVER ROAD ROEBOURNE POINT SAMSON WOODBROOK ROAD COOYA POOYA ROAD Pipeline Cleaverville (abd) Yd DIXON I NANNY GOAT HILL Yd ruin (abd) (abd) Fortescue River Roadhouse 65 km Whim Creek 40 km ruin ruin ROAD Yd underground gas pipeline underground gas pipeline WICKHAM underground gas pipeline NORTH WEST COASTAL HIGHWAY Cleaverville Beach Roebourne Airport Harding Bridge Millstream 105 km Millstream 88 km Yd MOUNT BEACH MOUNT WANGEE Yard Yard Yard MOUNT FISHER MOUNT OSCAR Yard Yard MOUNT DICK Yd Yd Yard Yard MOUNT WELCOME MOUNT ANKETELL CHERRATTA ROAD ROEBOURNE GAP ROBE RIVER RAILWAY Hat Rock Tessa Shoals Bezout Rock Little George Bridge WOODBROOK ROAD BEZOUT I JARMAN I PICARD I Roebourne Kialrah Pool Koogebuntare Pool Janabarenan Pool (PD) Inthanuna Pool (PD) Cattle Yards Mill Warambie Pool Dumps Mill Booraddin Pool Terenar Pool George Coast Mill Alex Mill Pinanular Pool Waranoolar Pool (PD) Harding Dam Alex Tank Perseverance Tank Tank Andy Well Perseverance Well Jones Well Ram Paddock Well Woodbrook Well (abd) Ross Well Jim Well Willie Well Bradley Well Drought Well Warambie Well New Callibina Well Callibina Well Koogebuntare Well Webster Well George Well Tin Hut Well One Tree Well Terenar Well 8 Mile Well The Yard Well 6 Mile Well Slaughter Well Barley Bree Well Mine Well Paradise Well (abd) Rea Well Black Hill Well Murray Camp Well Stone Yard Well Boundary Well Native Hill Well Bradley Well 4 Mile Well (abd) 8 Mile Well (abd) 5 Mile Well Shaw Well Common Well (abd) Fullbrook Well Lawson Well Runthrough Bore Harding Bore T Ts T Ts T T T WH WH WH T T T T T T T Boona Booka Jacka Pool (PD) Ts Ts Ts T Bob Well Western Creek Well White Quartz Well Maurice Well Yeeramukadoo P Moothanganna S (PD) B Grims Well (abd) B W B B Big Tree Well Bamba Pool Rocky Creek Well Dam Rockhole Soak W T T Waterhole Tank Tank Bore pipeline Pool (PD) Goonabooka Well Well B P W T (abd) (PD) Shear Agm d d d d d d d d d d d d d d Agdqy Au Amm Amm Ae d Sholl Zone ñgH ñgRg ñgR ñCf ñCf ñGl ñaA ñgH ñgH ñgH ñR ñR ñRr ñRr ñGl ñFr ñFr ñFdc ñFh ñFr ñaS ñaA ñaA ñaA ñaA ñgRn ñU ñaO ñk ñaS ñU ñGl ñe ñCw ñCw ñaA ñaA ñgH ñR ñR ñR ñR ñRr ñRr ñRr ñRr ñGl ñGl ñGl ñpf ñFr ñFr ñFh ñFdc ñFh ñFr ñgg îì78ôôôÜN ê00ôôôÜE 02 04 06 08 ê10 12 14 16 18 ê20 22 24 26 28 ê30 32 34 36 38 ê40 42 44 46 48 ê50 ê00 02 04 06 08 ê10 12 14 16 18 ê20 22 24 26 28 ê30 32 34 36 38 ê40 42 44 46 48 ê50 52 84 82 îì80 îì90 88 86 96 94 92 02 îî00 98 08 06 04 14 12 îî10 îî20 18 16 26 24 22 32 îî30 28 32 îî30 28 26 24 22 îî20 18 16 14 12 îî10 08 06 04 02 îî00 98 96 94 92 îì90 88 86 84 82 îì80 78 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? S 80 S 5 S 60 S 15 S 65 S 60 60 70 70 75 60 65 50 30 40 25 80 80 30 35 5 45 20 20 30 80 80 70 80 10 80 80 75 80 55 75 60 75 80 60 70 30 70 30 70 50 60 80 10 75 30 60 144256 15 15 45 60 60 55 35 10 30 45 70 35 60 65 65 15 144261 15 15 15 25 80 15 80 70 80 60 10 85 35 20 35 15 40 15 10 80 55 40 50 80 30 20 70 65 65 127320 25 15 30 65 5 25 10 10 10 25 5 15 80 10 15 30 75 10 10 30 15 20 20 142430 127378 85 80 70 60 80 85 80 80 75 15 70 80 60 70 114305 80 50 75 65 75 80 30 70 60 15 80 60 60 50 45 30 50 70 20 10 25 25 15 10 5 35 60 45 40 30 60 60 40 50 50 65 55 60 15 60 40 50 80 10 15 20 20 25 30 30 15 10 15 5 15 20 70 70 25 20 20 75 70 80 75 80 60 80 45 45 60 30 65 70 50 10 65 60 50 55 85 85 70 80 60 70 80 80 80 85 60 85 75 80 80 70 85 75 65 60 30 35 70 75 60 45 80 60 50 50 80 50 60 60 60 60 60 60 80 80 65 60 70 50 70 70 80 65 70 45 80 60 40 70 80 70 60 45 75 40 65 80 40 45 30 40 30 45 75 70 70 75 65 80 80 70 50 60 80 80 85 85 70 70 15 50 75 80 20 40 80 15 30 50 75 20 80 80 80 75 85 70 10 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Ôas Ôas Ôas Ôaa Õms Õmm Õmu Õms Õms Õmm Õms Õmm Õms Õms Õmm Õmu Õmm Õmm Õmm Õmu Õms Õms Õms Õmu Õms Õms Õms Õmm Õmu ñb ñba ñba ñba ñba ñba ñb ñb ñb ñb ñb ñba ñba ñbs Ôwb Ôwb Ôwb Ôwb Ôwb Ôwb Ôwb Ôwb Ôwb Ôwb ñaAo ñaAo ñaAl ñaAd ñaAl ñaAl ñaAus ñaAus ñaAo ñaAo ñaAl ñaAo ñgHd ñaAl Ôc Ôc Ôc Ôc Ôc Ôc Ôc Ôc ñgg ñpf ñaAy ñpf ñaAob ñgHd ñaAl Ôwb Ôs ñgHd ñci ñus ñuv ñcf ñpf ñcx ñaAus ñaAl Ôc Ôab Ôc Ôc Ôw Ôab ñcx ñub Ôc Ôw Ôw Órf Ôaa Ôaa Ôaa Ôaa Ôaa Ôaa ñaAus ñaAus ñaAus ñaAus ñaAus ñaAus ñb ñaAo ñaAo ñaAl ñgHu ñaAl ñgHm ñaAo ñaAo Ôc Ôc Ôc Ôal Ôw Ôwb Ôc Ôc ñaAo Ôc Ôc ñaAo Ôwb Ôao Ôwb ñaAo Ôao Ôab Ôaoc Ôrg Ôao Ôab Ôaoc Ôc Ôao Óag Ôab Ôao Ôao Ôab Ôaa Ôaa ñaAx Ôc Ôas Ôas Ôw Ôao Ôaa Ôab ñcf ñut Ôas Ôas Ôas Ôas Ôaa Ôaoc Ôaoc Ôab Ôab Ôab Óag Óaa Óab Óag Ôao Ôaa Ôab Ôwb Óab Óag Óag Óag Ôao Ôaa Ôal Ôab Õmm Õmm Õmu Õms Õms Ôab Ôab Ôab Ôas Ôas Ôas Ôas Ôas Óaa Óaa Ôaa Ôaa Óag Óab Óab ñFr ñFr ñft ñft ño ño ñur Ôrg ñgm ñaAx ñaAo ñgHm ñgHm ñgHm ñgHm ñba ñba ñmm Ôrg Ôc ño ñgHmx ñb ñb ñb ñb ñb Ôab Ôwb Ôwb Ôwb ñb ñb ñb ñod Ôc Ôc Ôc Ôc ñba Ôrg Óak Ôab Ôab Ôwb Ôwb Ôc Óag ñba Ôab ño Ôao ñft ñft ñft Ôc ñbt Ôc Ôc Ôao Ôao ñFhs Ôc ño Ôc Ôc ñb ñb ñb Ôc Ôc Ôc Ôc Ôc Ôc ñb Ôc ño ñFhs ñb Ôc Ôc ñFdcu ñFdc ñFdc ñFdc Ôc ñFdcu Ôc ñFr ñFr Ôc Ôc Ôc ñFdcu ñFhy ñFr Ôc ñFhs ñFhs ñFhc ñFhy Ôc Ôc ñel ñeh ñeh ñaOd Ôc ñsi ñsi ñsi Ôc ñmm ñsi ñci ñod ñbs ñod Ôc Ôc ñmm Ôc ñod ñCwy ñCwt ñCwt ñCws ñCwt ñFr ñeh ñbs Ôc Ôc Ôab Ôc Ôc ñFr Ôwb ñFr ñFr Ôc ñCft ñeh ñaOd Ôc ñFdc Ôc Ôc Ôc Ôc Óak Óak Ôab Ôwb Ôs Ôab Ôc Ôc Ôs Ôc Ôwb Ôwb Ôwb Óak Óak Óak Ôwb ñFr Ôab Ôc ñFdc ñk ñk ñFhs Ôao Ôw Ôc ñey ñey ñaOd ñod ñCws ñCws ñCwt ñCwt ñCwy ñCwy ñCwy ñCwy ñci Ôab Ôwb Ôwb ñCwy Ôc Ôc Ôc ñeh ñeh Ôc Ôc Ôw Ôc Ôc ñaSo ñba ñba ñaSuo ñaSy Ôw Ôc ñba ñCwy Ôab ñod ñCft ñey ñey ñk ñFdc ñFdcu ñFdcu ñCwy Ôab Óag Óab Ôao Ôab Óag Óag Ôc Ôao Ôc Óag Ôao Ôab Ôwb Ôab Ôc ñFrs ñsq Õmu ñFr Ôw Ôc ñci ñs Ôao ñcx Ôc Ôrg ñaAus Ôao Ôc Ôc Ôwb Ôao Ôaoc Óaa Ôw Ôw Óag Óab Ôc ñfa ñbt Ôw Ôwb ñCwy Ôwb Ôaa Ôaa Ôs ñaOus ñCw ñCw Õmu Ôaa Õms Õms Ôc Õms Óc Rm Rm Zn,Pb,Cu,Ag,Au Rm Rm Pb,As Weerianna Pb Crn Cu Carlow Castle Cu Good Luck Fortune Gs Fe Fe Fe Fe Zn Rm Gs Gs Gs Ni,Cr Gs Ni Ni Rm Asbc W E S T P I L B A R A M I N E R A L F I E L D Gs Rm Rc Sv Asbc Asbc Asbc Asbc Asbc Asbc WEERIANNA Andover V,Ti,Fe,Pb As Asbc Cr Cu Crn Gs Au Fe Pb Ni Rm Rc Sv Ag V Zn Ti WEERIANNA Fortune Au,Cu ? ? 20 S AUSTRALIA 1:100 000 GEOLOGICAL SERIES SHEET 2356 GEOLOGICAL SURVEY OF WESTERN AUSTRALIA 117^00À 20^30À 117^30À 20^30À 21^00À 117^30À 21^00À 117^00À SEA LEVEL SEA LEVEL 2 km 2 km 4 km 4 km A B C A C B DIAGRAMMATIC SECTION Sholl Shear Zone d d d 10À 20À 40À 50À 40À 50À 10À 20À p Marine mud and silt; intertidal with mangroves Shelly sand in coastal dunes and old beach deposits; contains Anadara granosa Silt and mud in supratidal to intertidal flats and lagoons Alluvial sand and gravel in levees and sandbanks associated with deltas Clay and silt in claypan and coastal lacustrine deposits Alluvial sand, silt, and clay; mixed floodplains deposits (Qao) characterized by numerous small claypans Alluvial sand, silt, and clay in floodplains, with gilgai surface in areas of expansive clay Coastal sand deposits of mixed alluvial and eolian origin Sand, silt, and clay in distal outwash fans, with gilgai surface in areas of expansive clay Colluvium _ sand, silt, and gravel in outwash fans; scree, talus; proximal mass-wasting deposits Quartz debris adjacent to large quartz-veins Quartzofeldspathic eluvial sand, with quartz and rock fragments; overlying and derived from granitoid rock Eolian sand _ red-yellow, wind-blown sand; local sand ridges Consolidated alluvial sand, silt, and clay; dissected by present-day drainage Variably consolidated alluvial sand, silt, and clay, with gilgai surface, in abandoned alluvial channels; locally dissected by present-day drainage Pisolitic limonite deposits, developed along palaeodrainage lines; dissected by present-day drainage Granite vein Pegmatite Fault breccia along or adjacent to faults; silicified Granophyric quartz diorite COOYA POOYA DOLERITE: fine- to medium-grained dolerite; includes ultramafic layers HARDEY FORMATION: Polymictic conglomerate Shale and siltstone COOYA POOYA DOLERITE MOUNT ROE BASALT: Sandstone and conglomerate; minor shale Basaltic agglomerate Polymictic conglomerate and sandstone Gabbro and dolerite; metamorphosed Gabbro; metamorphosed Mylonite and mylonitic gneiss; derived by extreme shearing of granitoid, gneiss, and a wide range of supracrustal rock types; chiefly in Sholl Shear Zone PlagioclaseÊhypersthene gneiss; derived by shearing and metamorphism of Sherlock Intrusion FeldsparÊquartzÊdiopside gneiss; derived by partial mylonitization of monzogranite of HARDING GRANITOID COMPLEX Pegmatitic granodiorite and diorite of HARDING GRANITOID COMPLEX; Andover Intrusion; metamorphosed HARDING GRANITOID COMPLEX Gabbro; metamorphosed Plagioclase-bearing olivine clinopyroxenite and olivine gabbro; cumulate texture; metamorphosed Granophyre; weakly metamorphosed Metabasalt, vesicular; local acicular pyroxene Leucogabbro; metamorphosed Peridotite; partly serpentinized; metamorphosed Serpentinite; after peridotite Granophyre and granophyric fine-grained monzogranite Monzogranite and granodiorite; weakly foliated to banded Hornblende-, diopside-, and biotite-rich monzogranite; foliated Monzogranite and granodiorite containing greenstone enclaves KIALRAH RHYOLITE: porphyritic and flow-banded rhyolite and dacite; metamorphosed High-Mg basalt; acicular textures; minor komatiite, characterized by olivine spinifex texture; metamorphosed Pillowed basalt; locally pyroxene spinifex textured; metamorphosed Sandstone, tuffaceous siltstone and shale, and calcite-cemented volcaniclastic sandstone; metamorphosed Grey-white banded chert; silicified tuffaceous siltstone and shale; metamorphosed WARAMBIE BASALT: vesicular basalt, basaltic tuff, sandstone, and local polymictic conglomerate; metamorphosed Basaltic tuff and vesicular basalt; metamorphosed Apf QuartzÊfeldspar porphyry, rhyolite, and dacite; chiefly intrusive; metamorphosed Granodiorite, local compositional banding; foliated Ac Acf Aci Acj Acw Chert, undivided Black chert Ferruginous chert, banded iron-formation, and metamorphosed intercalated fine-grained clastic sedimentary rocks Banded iron-formation; minor ferruginous chert Jaspilite Grey-white banded chert, locally associated with quartzite Brecciated chert and totally silicified mafic cataclastic rocks Sedimentary rocks, undivided; metamorphosed Metaconglomerate Felsic volcaniclastic rock; metamorphosed Ferruginous clastic sedimentary rocks, dominantly pelitic; includes minor chert beds; metamorphosed Quartzite Sandstone; minor conglomerate and siltstone; metamorphosed Felsic volcanic rock, undivided; chiefly dacite; metamorphosed Felsic agglomerate; metamorphosed Rhyolite; metamorphosed Basaltic rock, undivided; generally metamorphosed to greenschist facies Strongly foliated basalt; metamorphosed to amphibolite facies Foliated and sheared metabasalt with sheared veins and sheets of microgranite and pegmatite; metamorphosed to amphibolite facies Mafic schist Ultramafic rock, undivided; includes schist; local silicification Intercalated ultramafic and mafic schist with thin chert units (silicified interflow sedimentary rocks) Komatiite; characterized by olivine spinifex textures; metamorphosed Serpentinite; replacing peridotite TalcÊchlorite schist Ultramafic lava; fine-grained peridotite to high-Mg basalt; metamorphosed Pyroxenite, commonly schistose; metamorphosed Fortescue Group Mount Bruce Supergroup Sherlock Intrusion Opaline Well Intrusion Andover Intrusion Whim Creek Group Pilbara Supergroup Pilbara Supergroup (no stratigraphic subdivision) QUATERNARY CAINOZOIC PHANEROZOIC ARCHAEAN PILBARA CRATON 2760 Ma 2970 Ma 2972 Ma 3009 Ma 3015 Ma c. Geological boundary Fault concealed......................................................................... Small-scale fold axis, showing trend and plunge Bedding, showing strike and dip Igneous layering, showing strike and dip Way-up indicator Metamorphic foliation, showing strike and dip Cleavage, showing strike and dip Shear-sense indicator Lineation, showing trend and plunge Isotopic age determination site with identification number Formed road........................................................................... Track....................................................................................... Fence, generally with track................................................... Townsite Mining area Geochemical anomaly from gossan assay (>1000 ppm; except for Mo and W >50 ppm; Silver................................................................................. Vanadium.......................................................................... Zinc................................................................................... m 70 25 75 60 20 127320 85 GN MN GRID / MAGNETIC GRID CONVERGENCE True north, grid north and magnetic north are shown diagrammatically for the centre of the map. Magnetic north is correct for 2 years. 1999 and moves easterly by about 0.1^ in TN SHEET INDEX SHEET 2356 FIRST EDITION 2000 2054 2055 2056 2057 2154 2155 2156 2254 2255 2256 2257 2354 2355 2356 2357 2454 2455 2456 2457 2554 2555 2556 2557 YARRALOOLA MARDIE SHOLL MONTEBELLO PANNAWONICA FORTESCUE PRESTON ELVIRE DAMPIER LEGENDRE MILLSTREAM ROEBOURNE DELAMBRE SHERLOCK COSSIGNY HOOLEY SATIRIST YULE THOUIN DAMPIER ROEBOURNE YARRALOOLA PYRAMID SF 50-2 SF 50-3 SF 50-6 SF 50-7 COOYA POOYA MOUNT WOHLER MOUNT BILLROTH PINDERI HILLS 1:100 000 maps shown in black 1:250 000 maps shown in brown with modifications from geological field survey Topography from the Department of Land Administration Sheet SF 50-3, 2356, ANGLE 1.5¾ 0.7¾ ¦ Western Australia 2000 Schistose metasandstone and metasiltstone TremoliteÊchlorite schist Serpentinite KARRATHA GRANODIORITE: Medium- to coarse-grained poorly sorted sandstone, siltstone, and minor shale and conglomerate; local felsic tuff Lyre Creek Member: basaltic to intermediate tuff and lapilli tuff; minor tuffaceous sandstone and conglomerate High-Mg basalt; metamorphosed Basaltic tuff, well bedded; metamorphosed Geology by A. H. Hickman, 1996Ê97 Fold, showing axial trace and generalized plunge Powerline, generally with track............................................. Colluvium _ dissected consolidated clay, silt, and sand, and gravel deposits; derived from adjacent rock outcrop Coastal limestone _ lime-cemented shelly sand, dune sand, and beach conglomerate Edited by N. Tetlaw and C. Brien Railway.................................................................................... Titanium............................................................................ massive, vesicular, and glomeroporphyritic basalt Pelitic schist; minor chert and metabasalt Basalt, vesicular and commonly pillowed; locally glomeroporphyritic; metamorphosed Polymictic mafic conglomerate with fragmental matrix; metamorphosed HARDING GRANITOID COMPLEX HARDING GRANITOID COMPLEX concealed, interpreted from aeromagnetic data, position uncertain...................................................... direction Ultramafic rock; fine-grained, silicified pyroxene-rich and commonly olivine-bearing rock with quartz xenocrysts sandstone, conglomerate, siltstone, shale, and tuff (Section only) Gabbro and dolerite containing angular blocks of basalt; metamorphosed Gabbro and dolerite containing angular blocks of basalt; metamorphosed Gabbro and minor dolerite; local norite and anorthosite; metamorphosed LOUDEN VOLCANICS MONS CUPRI VOLCANICS weakly foliated granodiorite and tonalite (Section only) Cartography by D. Ladbrook and B. Williams Quartzite; as rafts within intrudes Metamorphosed dolerite and microgabbro Pilbara Supergroup Dolerite and microgabbro; metamorphosed Felsic volcanic and volcaniclastic rocks, tuffaceous; rhyolite and dacite; metamorphosed Monzogranite and granodiorite; foliated The recommended reference for this map is: HICKMAN, A. H., 2000, Roebourne, W.A. Sheet 2356: Western Australia Geological Survey, 1:100Ý000 Geological Series Bathymetric data supplied by the Department of Transport, and is not to be used for navigation purposes 10 population less than 1 population between 1 Pegmatitic muscoviteÊbearing granitoid; intrudes Metagabbro Pyroxenite; metamorphosed Dolerite dyke, interpreted beneath regolith from aeromagnetic data where dashed Vesicular basalt; local abundant aphyric basalt and pyroxene spinifex textured basalt; metamorphosed Rhyolite and dacite tuff; metamorphosed SIMPLIFIED GEOLOGY d Dolerite dyke Sheared and mylonitic rock Andover Intrusion Kialrah Rhyolite Louden Volcanics Mons Cupri Volcanics Warambie Basalt Regal Formation* Unassigned ultramafic rocks Granophyric quartz diorite Bookingarra Granite Harding Granitoid Complex Caines Well Granitoid Complex Granitoid gneiss Monzogranite and granodiorite Granodiorite, local banding Hamersley Basin PILBARA CRATON 2680 Ma 2770Ê 2925 Ma 2970 Ma 3010 Ma 3015 Ma 3020 Ma 3115 Ma 3125Ê 3270 Ma 0 5 10 15 20 Kilometres SCALE 1:Ý500Ý000 Cleaverville Formation* c. c. c. c. c. c. Opaline Well Intrusion Sherlock Intrusion TRANSVERSE MERCATOR PROJECTION Grid lines indicate 1000 metre interval of the Map Grid Australia Zone 50 VERTICAL DATUM: AUSTRALIAN HEIGHT DATUM 0 1 2 3 4 5 6 7 8 9 10 Kilometres Metres 1000 SCALE 1:100Ý000 HORIZONTAL DATUM: GEOCENTRIC DATUM OF AUSTRALIA 1994 BATHYMETRIC DATUM: LOWEST LOW SEA LEVEL Mount Roe Basalt Hardey Formation Cooya Pooya Dolerite Basalt and calc- alkaline volcanics Nickol River and Ruth Well Formations* Overbank deposits; alluvial sand, silt, and clay on floodplains adjacent to main drainage channels Ferricrete; includes ferruginous duricrust and pisolitic ironstone; residual origin; dissected by present-day drainage Hamersley Basin 2770 Ma c. Dolerite; metamorphosed Andover Intrusion; probable late stage component of c. Sandstone, conglomerate, and semipelitic sedimentary rocks; metamorphosed QuartzÊfeldspar porphyry * Shown as Roebourne greenstones on Dampier 1: 100 000 Geological Series map Ê 000 Low-gradient sheetwash deposits _ silt, sand, and pebbles in distal outwash fans; no defined drainage Alluvial gravel deposits; unrelated to recent drainage; dissected Quartz vein Alluvial sand and gravel in rivers and creeks; clay, silt, and sand in channels on floodplains Dissected valley calcrete; massive, nodular, and cavernous limestone; variably silicified 3270Ê3260 Ma ñu ñu ñu ñb ñc ñod ñpf ñc ñc ñcb ñu ñaAus ñgHd ñmm ñod ñbs ñod ñaOd ñpf ñba ñaOus ñcw ñaAus q ñFhq ñFhq Õmm Õms Õmu Ömb Ôaa Ôal Ôac Ôao Ôaoc Ôab Ôas Ôw Ôwb Ôc Ôcq Ôrg Ôs Óaa Óab Óag Óak Óaf Órf d q d g p fb ñFdc ñFdcu ñFh ñFhc ñFhh ñFhy ñFr ñFra ñFrc ñFrs ño ñog ñmm ñgHn ñgHd ñgHu ñaSo ñaSob ñaSuo ñaSy ñaOb ñaOo ñaAo ñaAob ñaAl ñaAd ñaAp ñaAus ñaAy ñgHm ñgHmh ñgHmx ñeh ñel ñes ñey ñCfw ñCft ñCfw ñCw ñgg ñc ñcb ñcf ñci ñcj ñcw ñcx ñs ñsc ñsf ñsi ñsq ñst ñf ñfa ñfr ñft ñb ñba ñbgp ñbs ñbt ñu ñub ñuk ñus ñut ñuv ñux ñss ñbm ñur ñaOus ñgka ñFhq ñFhs ñCwh ñCwy ñCwx ñaSs ñgm ñaOd ñaAx g p ñaA ñgR ñgRn ñgm ñgg ñaO ñaS ñod ñCwt ñaOd q ñCws Óc exposed.................................................................................... concealed................................................................................. exposed.................................................................................... mylonite.................................................................................... horizontal relative displacement............................................ anticline; exposed, concealed............................................... syncline; exposed, concealed................................................ S-vergence............................................................................... inclined..................................................................................... vertical...................................................................................... overturned................................................................................ inclined..................................................................................... pillow structure........................................................................ sedimentary structure............................................................. graded-bedding....................................................................... cross-bedding.......................................................................... inclined..................................................................................... vertical...................................................................................... inclined..................................................................................... sinistral..................................................................................... inclined..................................................................................... Aeromagnetic lineament................................................................ Highway with national route marker; bridge............................... Major track............................................................................. 000.................................... 000................................................... Homestead..................................................................................... Building.......................................................................................... Yard................................................................................................ Microwave repeater station.......................................................... Horizontal control; major, minor.................................................. Contour line, 20 metre interval.................................................... Watercourse with ephemeral pool or waterhole........................ Bathymetric contour (m); accurate, inferred............................... Gas pipeline................................................................................... Water pipeline................................................................................ Bore, well....................................................................................... Windpump...................................................................................... Dam, tank...................................................................................... Rockhole, soak.............................................................................. Rock, exposed............................................................................... Abandoned..................................................................................... Position doubtful............................................................................ Prominent submerged reef........................................................... Mine (gold, unless otherwise indicated)..................................... Mining centre................................................................................. Opencut......................................................................................... Quarry or pit.................................................................................. Prospect......................................................................................... Made ground................................................................................. ore stockpiles.......................................................................... Bi, Ag >100 ppm; Au >500 ppb)......................................... Mineral occurrence................................................................. Arsenic..................................................................................... Asbestos, chrysotile............................................................... Chromium................................................................................ Copper..................................................................................... Corundum................................................................................ Gemstones............................................................................... Gold......................................................................................... Iron........................................................................................... Lead......................................................................................... Nickel....................................................................................... Road material.......................................................................... Rock, crushed aggregate....................................................... Sand......................................................................................... ñFdc ñFh ñgHm ñgHm ñaOb ñaOo ñaAl ñaAl ñaAus ñaAo ñaAo ñeh ñey ñCw ñCws ñCwt ñpf ñci ñst ñst ñsi ñcf ñci ñuv ñub ñb ñb ñb ñb ñb ñcf ñss ñba ñgka ñba ñsf ñFr ñsi ñcx ñaAo ñgm ñba ñba ñgHd ñmm ñod ñci ñft ñft ñeh ñFr ñCft ñci ñeh ñFr ñCft ñft ñaOo ñey ñCw ñba Õmm Õms Õmu Ömb Ôaa Ôal Ôao Ôaoc Ôab Ôac Ôas Ôw Ôwb Ôc Ôcq Ôrg Ôs Óaa Óab Óag Óak Óaf Órf fb ñgdqy ñFdc ñFdcu ñFh ñFhc ñFhh ñFhy ñFr ñFra ñFrc ñFrs ñog ño ñmm ñgHn ñgHd ñgHu ñk ñCw ñCwx ñCwy ñgg ñcb ñcx ñs ñsc ñsf ñsi ñsq ñst ñf ñfa ñfr ñft ñb ñba ñbgp ñbs ñbt ñu ñub ñuk ñus ñut ñuv ñss ñbm ñur ñgka ñFhq ñFhs ñCwh ñaSs ñaOb ñaOd ñaOus ñaSo ñaSob ñaSuo ñaSy ñaAo ñaAob ñaAl ñaAd ñaAp ñaAx ñaAy ñgHm ñgHmh ñgHmx ñeh ñel ñes ñey ñCft ñux ñgm ñaOo ñaAus ñaA ñmm ñk ñe ñpf ñCw ñGl ñU ñRr ñR ñu ñgdqy ñgRg ñgH ñgR ñgRn ñgm ñgg ñaO ñaS ñCf ñFdc ñFr ñFh ñaAo ñod ñCwt ñCws Óc The Map Grid Australia (MGA) is based on the Geocentric Datum of Australia 1994 (GDA94) GEOCENTRIC DATUM OF AUSTRALIA GDA94 positions are compatible within one metre of the datum WGS84 positions Reference points to align maps based on the previous datum, AGD84, have been placed near the map corners Plotted by the Geological Survey of Western Australia PRODUCT OF THE NATIONAL GEOSCIENCE AGREEMENT Department of CLIVE BROWN, M.L.A. MINISTER FOR STATE DEVELOPMENT JIM LIMERICK DIRECTOR GENERAL Industry and Resources G E O L O G I CAL S U R V E Y W E S T E R N A U S T R A L I A TIM GRIFFIN DIRECTOR Geological Survey of Western Australia 100 Plain Street, East Perth, WA, 6004. Phone (08) 9222 3459, Fax (08) 9222 3444 Published by the Geological Survey of Western Australia. Digital and hard copies of this map are available from the Information Centre, Department of Industry and Resources, WebÝ www.doir.wa.gov.au EmailÝ geological [email protected] Fortescue Group Whim Creek Group Gorge Creek Group Whundo Group Roebourne Group W.A. N.T. Qld S.A. N.S.W. A.C.T. Vic. Tas.