GEOLOGICAL SURVEY OF FORTESCUE GROUP BULLETIN 144 PLATE 1C

REFERENCE SYMBOLS

Geological boundary...... Mineral field boundary...... Ôa Ôx Ôm Fault Mineral field district boundary...... exposed...... Mining group...... WOODIE WOODIE concealed...... Mine or opencut from MINEDEX data (gold, unless Qa Alluvium_unconsolidated silt, sand, and gravel; in river channels Qx Undivided Quaternary deposits; includes colluvium, reworked alluvium, eolian sand, and clay reverse...... otherwise indicated)...... Bamboo Creek Qm Clay, mud, silt, and sand; tidal and supratidal deposits, mangroves, lagoons, and coastal dunes Major folds, showing axial trace and generalized Closed mine or undeveloped deposit from MINEDEX plunge direction data......

CAINOZOIC Óx Ók Óp anticline; exposed, concealed...... Closed mine or undeveloped deposit from published syncline; exposed, concealed...... GSWA maps...... Czx Undivided Cainozoic deposits; includes partly consolidated colluvium and alluvium, and silcrete and laterite overturned anticline; exposed...... Mining area or ore stockpiles...... Czk Calcrete_sheet carbonate; found along major drainage lines Bedding, showing strike and dip Mineral occurrence Czp ROBE PISOLITE: pisolite limonite deposits; developed along palaeodrainage lines

PHANEROZOIC horizontal...... Antimony...... Sb 5 inclined...... Asbestos, chrysotile...... Ac âK Sandstone, conglomerate, siltstone, and mudstone; includes CALLAWA FORMATION, FREZIER SANDSTONE, JARLEMAI vertical...... Asbestos, crocidolite...... Ad SILTSTONE, NANUTARRA FORMATION, PARDA FORMATION, WALLAL SANDSTONE, and YARRALOOLA CONGLOMERATE overturned...... 80 Barite...... Ba CRETACEOUS MESOZOIC JURASSIC AND strike and dip estimated from aerial photography Beryl...... Be 0ÝÊÝ15¾...... Building or dimension stone...... Bs

å Sandstone, conglomerate, siltstone, and mudstone; includes PATERSON FORMATION, GRANT GROUP, and POOLE SANDSTONE AND CANNING BASINS 15ÝÊÝ45¾...... Chromium...... Cr NORTHERN CARNARVON

PERMIAN 45ÝÊÝ90¾...... Chrysoprase...... Chy PALAEOZOIC INTRUSIVE ROCKS Igneous layering, showing strike and dip Copper...... Cu 20 inclined...... Diamond...... Di d Dolerite dykes, sills, and small intrusions (various ages) Isotopic age determination site with identification number, Fluorite...... F Fortescue Group only...... 118920 Gemstone...... Gs Gold...... Au ìS Quartz sandstone, siltstone, and mudstone; minor conglomerate BASIN Savory Group Highway with national route marker...... Iron...... Fe Savory OFFICER Sub-basin Formed road...... Lead...... Pb Track...... Limestone...... Ls c. 800 Ma ìU Fine- to coarse-grained sandstone, siltstone, mudstone, and stromatolitic and non-stromatolitic dolomite; minor conglomerate

Group Gas pipeline...... Lithium...... Li Tarcunyah Railway...... Manganese...... Mn Airport...... Mica...... Mi c. 900 Ma ìT Throssell Group: quartzitic and micaceous sandstone, siltstone, mudstone, conglomerate, stromatolitic and PATERSON OROGEN Basin Airfield...... Molybdenum...... Mo

non-stromatolitic dolomite, and dolomitic conglomerate; includes Lamil Group Muttarbarty Hill Yeneena Landing ground...... Nickel...... Ni

Yeneena Supergroup Townsite Niobium...... Nb c. 1600_1000 Ma ìM Sandstone, siltstone, mudstone, conglomerate, chert, stromatolitic and non-stromatolitic dolomite, and dolomitic sandstone, BASIN Group mudstone, and conglomerate population; less than 1000...... Point Samson Platinum group element...... PGE Bangemall BANGEMALL 1000ÝÊÝ10000...... Dampier Salt (solar evaporation)...... Na greater than 10000...... KARRATHA Silver...... Ag ìB Pebble to boulder conglomerate, pebbly sandstone, sandstone, siltstone, and mudstone BASIN

Group Homestead...... Millstream Tantalum...... Ta Bresnahan BRESNAHAN Building...... Tin...... Sn National Park boundary...... Titanium...... Ti ìI Quartz sandstone, conglomerate, siltstone, and mudstone Basin

Group Reserve boundary...... Tungsten...... W Mount Minnie Mount Minnie Horizontal control; major...... Uranium...... U Vanadium...... V ìr CAPRICORN FORMATION: conglomerate, ferruginous and quartzitic sandstone, ferruginous siltstone and mudstone, Blair dolomite, and felsic volcanic rock Basin Watercourse...... Zinc...... Zn Lighthouse...... Abandoned...... (abd) ìg Granodiorite, biotite-bearing and mainly coarse-grained; contains mafic xenoliths; intruded into Group

ìWa ASHBURTON FORMATION: mudstone, siltstone, thin- and thick-bedded sandstone; minor banded iron-formation, conglomerate, mafic and felsic volcanic rocks, and dolomite; metamorphosed

ìWj JUNE HILL VOLCANICS: mafic lava, pillow lava, and volcaniclastic rock; includes intermediate and felsic c. 1840 Ma volcanic rock, sandstone, and dolomite; metamorphosed

ìWd DUCK CREEK DOLOMITE: thin- to thick-bedded dolomite; local stromatolitic dolorudite; minor chert and argillite;

metamorphosed CAPRICORN OROGEN PROTEROZOIC ìWm MOUNT McGRATH FORMATION: ferruginous sandstone and conglomerate, mudstone, siltstone, and dolomite;

Wyloo Group metamorphosed Ashburton Basin

ìWb CHEELA SPRINGS BASALT: amygdaloidal basalt and mafic volcaniclastic rock; metamorphosed

BEASLEY RIVER QUARTZITE: fine- to coarse-grained quartz sandstone, conglomerate, mudstone, and siltstone; ìWq metamorphosed

N.T.

ìcb PINJIAN CHERT BRECCIA: chert breccia and banded chert; overlies CARAWINE DOLOMITE Qld.

W.A. ìgh Hornblende monzogranite and porphyry (age uncertain, but postdates c. 2560 Ma) S.A.

N.S.W.

ìTU Mudstone, siltstone, sandstone, and conglomerate; local stromatolitic dolomite and basalt; metamorphosed A.C.T.

Vic. Turee Creek Group ðH Undivided Hamersley Group; metamorphosed

Tas. ìHo BOOLGEEDA IRON FORMATION: fine-grained, finely laminated iron-formation; mudstone, siltstone, and chert; metamorphosed

c. 2440 Ma ìHw WOONGARRA RHYOLITE: rhyolite, rhyodacite, rhyolitic breccia, and banded iron-formation; metamorphosed

ìHj WEELI WOLLI FORMATION: banded iron-formation (often jaspilitic), mudstone, siltstone, and numerous dolerite sills; metamorphosed

c. 2490 Ma ìHb BROCKMAN IRON FORMATION: banded iron-formation, chert, mudstone, and siltstone; metamorphosed

2500 Ma Hamersley Group ñHs MOUNT McRAE SHALE and MOUNT SYLVIA FORMATION: mudstone, siltstone, chert, banded iron-formation, and dolomite; metamorphosed

WITTENOOM FORMATION: c. 2560 Ma ñHd thin- to medium-bedded dolomite, dolomitic mudstone, chert, and felsic to SHEET INDEX mafic volcanic sandstone; metamorphosed I N D I A N O C E A N ANNA PLAINS PHIRE CUDALGARRA YATES 3159 3259 3359 3459 ñHc CARAWINE DOLOMITE: thin- to thick-bedded dolomite, stromatolitic dolomite, and chert; metamorphosed BEDOUT ISLAND MANDORA MUNRO SE 50-16 SE 51-13 SE 51-14 NORTH TURTLE POISSONNIER KERAUDREN SHOONTA MANDORA RADI WOODS KARROBRIDILL BROOKE ñHm MARRA MAMBA IRON FORMATION: chert, banded iron-formation, mudstone, and siltstone; metamorphosed 2658 2758 2858 2958 3058 3158 3258 3358 3458 PLATE 1A PLATE 1B

MONTEBELLO LEGENDRE DELAMBRE COSSIGNY THOUIN PORT HEDLAND DE GREY PARDOO COORAGOORA CARDOMA BULGAMULGARDY ABSOLON QUIN ANKETELL

2057 2357 2457 2557 2657 2757 2857 2957 3057 3157 3257 3357 3457 DAMPIER 2257 ROEBOURNE PORT HEDLAND YARRIE ANKETELL SF 50-2 SF 50-3 SF 50-4 SF 51-1 SF 51-2 SHOLL PRESTON DAMPIER ROEBOURNE SHERLOCK YULE WALLARINGA CARLINDIE COONGAN MUCCAN ISABELLA WEENOO CHAUNCY ANGOVE

SOUTHERN NORTHERN PILBARA 2056 2156 2256 2356 2456 2556 2656 2756 2856 2956 3056 3156 3256 3356 3456

GSWA BULLETIN 127 PLATE 1 JEERINAH FORMATION: mudstone, siltstone, sandstone, chert, massive basaltic flows, basaltic JEERINAH FORMATION: carbonaceous mudstone and siltstone, thin-bedded sandstone, MARDIE FORTESCUE PINDERI HILLS MOUNT WOHLER SATIRIST WODGINA NORTH SHAW MARBLE BAR MOUNT EDGAR YILGALONG BRAESIDE WAUKARLYCARLY COOLYU CUTTACUTTA c. 2687 Ma ñFj ñFj ñFd Medium- to coarse-grained dolerite intruded into Fortescue Group; metamorphosed pillow lava, basaltic breccia, and minor felsic volcaniclastic rock; intruded by numerous chert, felsic volcaniclastic rock, basalt, and dolomite; metamorphosed 2055 2155 2255 2355 2455 2555 2655 2755 2855 2955 3055 3155 3255 3355 3455 YARRALOOLA PYRAMID MARBLE BAR NULLAGINE PATERSON RANGE dolerite sills; metamorphosed Nallanaring Member: pillowed and massive basaltic flows, and basaltic breccia; includes SF 50-6 SF 50-7 SF 50-8 SF 51-5 SF 51-6 ñFjn YARRALOOLA PANNAWONICA ELVIRE MILLSTREAM MOUNT BILLROTH HOOLEY WHITE SPRINGS TAMBOURAH SPLIT ROCK NULLAGINE EASTERN CREEK PEARANA LAMIL PATERSON TERRINGA felsic volcaniclastic rock locally; metamorphosed 2054 2154 2254 2354 2454 2554 2654 2754 2854 2954 3054 3154 3254 3354 3454 Pillowed and massive basaltic flows, basaltic breccia, and mafic to felsic volcaniclastic ñFjl Pillowed and massive basalt flows, and basaltic breccia; metamorphosed ñFjl sandstone; minor felsic volcaniclastic rock; includes the Barramine Volcanic Member CANE RIVER MOUNT STUART FARQUHAR JEERINAH McRAE WITTENOOM MOUNT GEORGE MOUNT MARSH WARRIE NOREENA DOWNS MOUNT COOKE WOBLEGUN THROSSELL BROADHURST DORA in the Gregory Range; metamorphosed 2053 2153 2253 2353 2453 2553 2653 2753 2853 2953 3053 3153 3253 3353 3453 WYLOO MOUNT BRUCE ROY HILL BALFOUR DOWNS RUDALL ñFji Isabella Member: fine-grained massive rhyolite; metamorphosed SF 50-10 SF 50-11 SF 50-12 SF 51-9 SF 51-10 WYLOO HARDEY ROCKLEA MOUNT LIONEL MOUNT BRUCE MUNJINA WEELI WOLLI ROY HILL ETHEL CREEK BALFOUR DOWNS TALAWANA POISONBUSH RUDALL CONNAUGHTON

2052 2152 2252 2352 2452 2552 2652 2752 2852 2952 3052 3152 3252 3352 3452 ñFjo Woodiana Member: quartzitic sandstone, chert (locally stromatolitic), chert breccia, and argillite; metamorphosed GSWA BULLETIN 139 PLATE 1 GSWA BULLETIN 138 PLATES 2W & 2E CAPRICORN ASHBURTON PARABURDOO SNOWY MOUNT GOVERNOR OPHTHALMIA NEWMAN MURRAMUNDA JIGALONG ROBERTSON STACEY McFADDEN GUNANYA

2051 2151 2251 2351 2451 2551 2651 2751 2851 2951 3051 3151 3251 3351 3451 ñFupo Undivided BOONGAL, PYRADIE and BUNJINAH FORMATIONS in the Wyloo Dome; EDMUND TUREE CREEK NEWMAN ROBERTSON GUNANYA metamorphosed SF 50-14 SF 50-15 SF 50-16 SF 51-13 SF 51-14 MANGAROON EDMUND ELLIOTT CREEK KENNETH RANGE BOGGOLA KALLENIA KUNDERONG PRAIRIE DOWNS WARRAWANDA MUNDIWINDI BOBBYMIA SAVORY KNIGHT DURBA DISAPPOINTMENT ñFm MADDINA FORMATION: massive to amygdaloidal basaltic flows and breccia, andesite, dacite, 2050 2150 2250 2350 2450 2550 2650 2750 2850 2950 3050 3150 3250 3350 3450 c. 2717 Ma ñFu BUNJINAH FORMATION: pillowed and massive basaltic flows, basaltic breccia, and basaltic volcaniclastic sandstone; minor chert; amygdaloidal basalt flows occur in upper parts and rhyolite; local thin beds of sandstone and dolomite; metamorphosed MOUNT of formation; metamorphosed EUDAMULLAH MOUNT PHILLIPS AUGUSTUS PEEDAWARRA TEANO MOUNT VERNON TANGADEE LOFTY RANGE ILGARARI TROTMAN DEAN BAUMGARTEN McAULIFFE TRAINOR SANDRIDGE Kuruna Member: mafic to intermediate volcaniclastic sandstone, argillite, chert, and dolomite; Hamersley Basin ñFmk 2049 2149 2249 2349 2449 2549 2649 2749 2849 2949 3049 3149 3249 3349 3449 local accretionary lapilli and stromatolites; metamorphosed MOUNT PHILLIPS MOUNT EGERTON COLLIER BULLEN TRAINOR Mount Bruce Supergroup SG 50-2 SG 50-3 SG 50-4 SG 51-1 SG 51-2 LOCKIER YINNETHARRA PINK HILLS CANDOLLE MOUNT EGERTON MULGUL CALYIE CARDAWAN WONYULGUNNA BEYONDIE BULLEN BLAKE WHITE LAKE BRASSEY NICHOLLS ñFms Argillite, mafic to intermediate volcaniclastic sandstone, chert, and stromatolitic dolomite; ñFus Quartzofeldspathic conglomerate and sandstone, mudstone, and siltstone; metamorphosed local abundant accretionary lapilli; metamorphosed 2048 2148 2248 2348 2448 2548 2648 2748 2848 2948 3048 3148 3248 3348 3448

TUMBIANA FORMATION: mafic to intermediate volcaniclastic sandstone, argillite, basaltic Layered sills intruded into Fortescue Group in southern Pilbara; sills generally consist of a 1:100Ý000 maps shown in black ñFt flows and breccia, chert, stromatolitic limestone and dolomite, and calcareous sandstone; ñFl coarse-grained pyroxenite base, overlain by leucocratic gabbro or dolerite; local basal Published 1Ý:Ý100Ý000 Geological Series maps used in compilation mainly lapilli tuff in East Pilbara; metamorphosed serpentinite; metamorphosed Published 1:250Ý000 Geological Series maps shown in brown Project maps used in compilation shown in green ñFp PYRADIE FORMATION: pyroxene spinifex-textured basaltic flows and pillow lava, mafic ñFtc Meentheena Member: stromatolitic limestone and dolomite, mudstone, siltstone, and mafic and felsic volcaniclastic rock; minor chert; local komatiite; metamorphosed volcaniclastic sandstone; metamorphosed See current GSWA map catalogue for full range of published products

ñFtl Basaltic flows and associated volcaniclastic rock; metamorphosed

ñFa Unassigned Fortescue Group basalt and minor sedimentary rock; metamorphosed; in Dampier Archipelago; possibly equivalent of KYLENA FORMATION ñFo BOONGAL FORMATION: pillowed and massive basaltic flows, basaltic breccia, basaltic KYLENA FORMATION: thin to very thick, massive or amygdaloidal basaltic flows, andesite, Fortescue Group volcaniclastic sandstone, and argillite; minor chert; metamorphosed ñFk dacite, and rhyolite; minor basaltic pillow lava and basaltic breccia; local pyroxene spinifex-textured ñFdc COOYA POOYA DOLERITE: fine- to medium-grained dolerite; metamorphosed basalt and thin stromatolitic carbonate beds; metamorphosed PILBARA CRATON

c. 2725 Ma ñFka Rhyolitic flows and breccia, and mafic and felsic volcaniclastic sandstone; metamorphosed ñyG ñyGo ñFh HARDEY FORMATION: argillite, sandstone, pebbly sandstone, conglomerate, basaltic ñFh HARDEY FORMATION: sandstone, mudstone, siltstone, conglomerate, felsic and mafic flows and breccia, and basaltic volcaniclastic sandstone; metamorphosed volcaniclastic sandstone and conglomerate, and basaltic flows and breccia; metamorphosed ñyG GIDLEY GRANOPHYRE: fine- to medium-grained granophyre, commonly porphyritic; includes hybrid rocks; metamorphosed Lyre Creek Member: massive, felsic to intermediate volcaniclastic sandstone and ñFhy ñyGo Gabbro containing quench-textured, acicular pyroxene crystals; metamorphosed conglomerate; local abundant accretionary lapilli; metamorphosed Compiled by A. M. Thorne 1993, 96Ê97 A. H. Hickman 1996Ê97

ARCHAEAN ñgh c. 2757 Ma ñFhb Basaltic flows and volcaniclastic rock; metamorphosed ñFhb Basaltic flows and associated volcaniclastic rock; metamorphosed Hornblende monzogranite and porphyry; metamorphosed Geology by A. M. Thorne 1987Ê93 A. H. Hickman 1996Ê97 Massive quartzÊfeldspar porphyry, medium- to thick-bedded porphyritic felsic breccia, and silt- M. Van Kranendonk 1997 GREGORY GRANITIC COMPLEX: metamorphosed, even-grained to porphyritic granitoid rock, c. 2757_2764 Ma ñFhf or sand-sized felsic volcaniclastic rock; metamorphosed; includes Bamboo Creek Member, ñgR after GSWA maps (see sheet index) porphyritic to seriate syenogranite, rapakivi-textured syenogranite, and granophyre Koongaling Volcanic Member, Warrie Member, and Spinaway Porphyry and BLAKE, T. S., 1990: Key Centre for Strategic Mineral Deposits (University of Western Australia), Map Series 1 ñFhs Feldspathic sandstone, pebbly sandstone, and conglomerate; minor argillite; metamorphosed Edited by C. Strong, N. Tetlaw, and G. Loan Cartography by S. Collopy, D. Ladbrook and K. Greenberg Topography from the Department of Land Administration and Main Roads Western Australia, ñFr MOUNT ROE BASALT: amygdaloidal basaltic flows and breccia, and basaltic volcaniclastic ñFr MOUNT ROE BASALT: amygdaloidal basaltic flows and breccia, and basaltic volcaniclastic sandstone; metamorphosed sandstone; metamorphosed with modifications from geological field survey Published by the Geological Survey of Western Australia. Copies available from ñFrb Basaltic breccia; metamorphosed the Information Centre, Department of Minerals and Energy, 100 Plain Street, East Perth, WA, 6004. Phone (08) 9222 3459, Fax (08) 9222 3444 This map is also available in digital form ñFrs Conglomerate, sandstone, and argillite; metamorphosed ñFrs Quartzofeldspathic sandstone, conglomerate, mudstone, and siltstone; metamorphosed Printed by the Sands Print Group, Western Australia The recommended reference for this map is: ñFdb Black Range Dolerite suite: dolerite, medium- to coarse-grained gabbro; weakly metamorphosed THORNE, A. M., and HICKMAN, A. H., 1998, Geology of the Fortescue Group, Pilbara Craton (1Ý:Ý500Ý000 scale), c. 2772 Ma ñFrf Felsic volcanic rock; metamorphosed ñFdbr ñFdbr BLACK RANGE DOLERITE: dolerite and gabbro; weakly metamorphosed in Geology of the Fortescue Group, Pilbara Craton, Western Australia by A. M. THORNE and A. F. TRENDALL: Western Australia Geological Survey, Bulletin 144, Plates 1AÊC ñFb BELLARY FORMATION: argillite, feldspathic sandstone, conglomerate, and basaltic flows and pillow lava; metamorphosed

SOUTHERN AND NORTHERN PILBARA

ñd ñdm

ñd Dolerite sills and dykes; metamorphosed ñdm Rafts of metamorphosed dolerite and gabbro; restricted to GREGORY GRANITIC COMPLEX

G IC A L S O U R L V O E

ñao ñau E Y

G

W A

E I

S L T A E T R Layered intrusion R N A U S ñao Gabbro and dolerite; metamorphosed

ñau Ultramafic rock; metamorphosed DEPARTMENT OF MINERALS GOVERNMENT OF WESTERN AUSTRALIA GEOLOGICAL SURVEY OF AND ENERGY HON. NORMAN MOORE, M.L.C. WESTERN AUSTRALIA L. C. RANFORD, DIRECTOR GENERAL MINISTER FOR MINES DAVID BLIGHT, DIRECTOR ño Gabbro sills and dykes; metamorphosed

SCALE 1:500Ý000 c. 2800_3500 Ma ñpf Feldspar porphyry; metamorphosed 5000 0 5 10 15 20 25 30 35 40 45 50

Metres Kilometres Pilbara Supergroup UNIVERSAL TRANSVERSE MERCATOR PROJECTION ñgm HORIZONTAL DATUM: GEOCENTRIC DATUM OF AUSTRALIA 1994 ñf ñs ñc ñci Granite to granodiorite; variably foliated VERTICAL DATUM: AUSTRALIAN HEIGHT DATUM Grid lines indicate 25Ý000 metre interval of the Map Grid Australia Zone 50 ñf Rhyolite and dacite flows, and associated volcaniclastic rocks; metamorphosed ñgp ñgy ñs Sedimentary rock, undivided; includes oligomictic and polymictic conglomerate, pebbly sandstone, mudstone, siltstone, and chert; metamorphosed ñc Chert; metamorphosed ñgp Porphyritic granite; foliated GEOLOGICAL SURVEY OF WESTERN AUSTRALIA ñci Banded iron-formation, chert, and jaspilite; metamorphosed ñgy Alkali feldspar granite; metamorphosed

ñb ñu ñgf ñgt ñgx BULLETIN 144 PLATE 1C Granitoid rocks, various ages

ñb Basaltic and andesite flows, and associated volcaniclastic rocks; metamorphosed ñgf Foliated, gneissic, or migmatitic biotite monzogranite, granodiorite, and tonalite; metamorphosed ñu Ultramafic rock, undivided; includes metamorphosed peridotite, dunite, pyroxene peridotite, and serpentinite, talc ñgt Tonalite and granodiorite; foliated and amphibole schist ñgx Numerous greenstone xenoliths in foliated granitoid rock

¦ Western Australia 1998

BULLETIN 144 PLATE 1C

07 Apr 2004 13:18:07 Y:\Fortescue Group\Plate 1C\Plate1C-GDA.dgn