Department of Industry and Resources EXPLANATORY NOTES GEOLOGY OF THE HOOLEY 1:100 000 SHEET by R. H. Smithies 1:100 000 GEOLOGICAL SERIES Geological Survey of Western Australia MONTAGUE DRYSDALE- MEDUSA SD 52 SOUND LONDON- BANKS DERRY 12 5,9 10 CAMDEN SOUND ASHTON CAMBRIDGE PRINCE REGENT- GULF 16 15, 13 14 PENDER o YAMPI CHARNLEY MT LISSADELL 16 ELIZABETH 2 3 4 1 2 BROOME DERBY LENNARD LANSDOWNE DIXON RIVER RANGE 6 SE 51 7 8 5 6 LA GRANGE MT NOONKAN- MT RAMSAY GORDON SE 52 ANDERSON BAH DOWNS 10 11 12 9 10 MANDORA MUNRO McCLARTY CROSSLAND MT BANNER- BILLILUNA HILLS MAN PORT 13 14 15 16 13 HEDLAND- 14 YARRIE ANKETELL o DAMPIER ROEBOURNE BEDOUT JOANNA DUMMER CORNISH LUCAS 20 BARROW SPRING ISLAND ISLAND 2 3 1 2 3 4 1 4 1 2 PYRAMID MARBLE NULLAGINE PATERSON SAHARA PERCIVAL HELENA STANSMORE ONSLOW YARRALOOLA BAR RANGE 8 5 6 7 5 6 7 SF 51 8 5 6 SF 50 BALFOUR ROY HILL RUDALL TABLETOP URAL WILSON WEBB SF 52 NINGALOO YANREY WYLOO MT BRUCE DOWNS 10 11 12 9 10 11 12 9 12 9 10 TUREE NEWMAN ROBERTSON GUNANYA RUNTON MORRIS RYAN MACDONALD SF 49 MINILYA WINNING EDMUND POOL CREEK 15 16 13 14 15 16 13 16 13 14 14 COLLIER BULLEN TRAINOR MADLEY o MT PHILLIPS MT WARRI COBB RAWLINSON 24 QUOBBA KENNEDY EGERTON RANGE 2 3 4 1 2 3 4 1 4 1 2 NABBERU STANLEY HERBERT GLENBURGH ROBINSON PEAK HILL BROWNE BENTLEY SCOTT SHARK WOORAMEL RANGE BAY- 8 5 6 7 5 6 7 SG 51 8 5 6 SG 50 GLENGARRY WILUNA YOWALGA SG 52 SG 49 YARINGA KINGSTON ROBERT TALBOT EDEL BYRO BELELE COOPER 10 11 12 9 10 11 12 9 8,12 9 10 CUE SANDSTONE SIR DUKETON THROSSELL WESTWOOD LENNIS AJANA MURGOO SAMUEL WAIGEN 15 16 13 14 15 13 14 16 13 14 o KIRKALOCKA YOUANMI LEONORA LAVERTON RASON NEALE VERNON 28 GERALDTON- YALGOO WANNA HOUTMAN ABROLHOS 2 3 4 1 2 3 4 1 2 1 MENZIES EDJUDINA PERENJORI NINGHAN BARLEE MINIGWAL PLUMRIDGE JUBILEE MASON 7 8 5 6 7 8 DONGARA- 6 SH 51 5 6 SH 50 JACKSON KAL- SEEMORE LOONGANA HILLRIVER CUNDEELEE SH 52 MOORA BENCUBBIN GOORLIE KURNALPI FORREST 12 9 10 11 5,9 10 11 12 9 10 BOOR- PERTH KELLER- SOUTHERN WIDGIE- ZANTHUS NARETHA MADURA EUCLA BERRIN CROSS ABBIN MOOLTHA 13 14 15 14 15 16 16 13 14 o CORRIGIN HYDEN LAKE NORSEMAN BALLA- CULVER BURN- 32 PINJARRA JOHNSTON DONIA NOONAERA ABBIE 2 3 4 1 2 3 4 1 2 COLLIE DUMBLE- NEWDE- RAVENS- ESPERANCE- MALCOLM- YUNG GATE THORPE MONDRAIN CAPE ARID ISLAND 6 7 8 5 7, 11 BUSSELTON- SI 50 SI 51 BREMER 6, 10 AUGUSTA PEMBERTON- MT BAY 5, 9 IRWIN INLET BARKER- 10, 14 11, 15 12 ALBANY 120 o o 114 o 126 COOYA MOUNT POOYA WOHLER SATIRIST 2355 2455 2555 PYRAMID SF 50-7 MOUNT HOOLEY MILLSTREAM BILLROTH 2554 2354 2454 RHS240 15.05.03 GEOLOGICAL SURVEY OF WESTERN AUSTRALIA GEOLOGY OF THE HOOLEY 1:100 000 SHEET by R. H. Smithies Perth 2003 MINISTER FOR STATE DEVELOPMENT Hon. Clive Brown MLA DIRECTOR GENERAL, DEPARTMENT OF INDUSTRY AND RESOURCES Jim Limerick DIRECTOR, GEOLOGICAL SURVEY OF WESTERN AUSTRALIA Tim Griffin REFERENCE The recommended reference for this publication is: SMITHIES, R. H., 2003, Geology of the Hooley 1:100 000 sheet: Western Australia Geological Survey, 1:100 000 Geological Series Explanatory Notes, 15p. National Library of Australia Card Number and ISBN 0 7307 8932 2 ISSN 1321–299X Grid references in this publication refer to the Geocentric Datum of Australia 1994 (GDA94). Locations mentioned in the text are referenced using Map Grid Australia (MGA) coordinates, Zone 50. All locations are quoted to at least the nearest 100 m. Copy editor: A. Thomson Cartography: D. Sutton Desktop Publishing: K. S. Noonan Printed by Haymarket, Perth, Western Australia Published 2003 by Geological Survey of Western Australia Copies available from: Information Centre Department of Industry and Resources 100 Plain Street EAST PERTH, WESTERN AUSTRALIA 6004 Telephone: (08) 9222 3459 Facsimile: (08) 9222 3444 This and other publications of the Geological Survey of Western Australia may be viewed or purchased online through the Department’s bookshop at www.doir.wa.gov.au Cover photograph: Looking northwest to Mumbillina Bluff where metasedimentary rocks of the Hardey Formation unconformably overlie granite. Contents Abstract ...................................................................................................................................................................... 1 Introduction ............................................................................................................................................................... 1 Access and land use ........................................................................................................................................... 1 Climate and vegetation ...................................................................................................................................... 2 Physiography ...................................................................................................................................................... 2 Regional geological setting and previous investigations .................................................................................. 4 Archaean rocks .......................................................................................................................................................... 5 Unassigned greenstone units ............................................................................................................................. 6 Ultramafic rocks (Au, Auk, Aur) ................................................................................................................ 6 Mafic rocks (Aba, Abal, Abag, Abas, Abu, Abuq) ..................................................................................... 6 Sedimentary rocks (Asq, Asqn) .................................................................................................................. 6 Yule Granitoid Complex ................................................................................................................................... 7 Cheearra Monzogranite (AgYchn) .............................................................................................................. 7 Cockeraga Leucogranite (AgYco, AgYcor, AgYcorx) ................................................................................. 7 Hornblende–biotite tonalite (AgYt) ............................................................................................................ 7 Mungaroona Granodiorite (AgYmux) ......................................................................................................... 7 Powdar Monzogranite (AgYpop, AgYpos) .................................................................................................. 7 Unassigned granitoid (AgY) ........................................................................................................................ 8 Metamorphism ................................................................................................................................................... 8 Structure ............................................................................................................................................................. 9 Hamersley Basin ................................................................................................................................................ 9 Fortescue Group ......................................................................................................................................... 9 Mount Roe Basalt (AFr) ...................................................................................................................... 9 Hardey Formation (AFh, AFhu) .......................................................................................................... 9 Kylena Formation (AFk, AFkbi, AFkh) ............................................................................................... 9 Tumbiana Formation (AFt, AFtsv, AFtc, AFtsvs, AFtsvb) .................................................................. 9 Maddina Formation (AFm, AFmk, AFmx) ......................................................................................... 11 Jeerinah Formation (AFjslg, AFjo, AFjsl, AFjkd) .............................................................................. 11 Hamersley Group ...................................................................................................................................... 11 Marra Mamba Iron Formation (AHm) .............................................................................................. 11 Structure and metamorphism ........................................................................................................................... 11 Dolerite dykes (d) ............................................................................................................................................ 11 Cainozoic deposits .................................................................................................................................................. 12 Residual deposits (Czru, Czrk, Czrfb) ............................................................................................................. 12 Colluvium (Czc, Czcb) .................................................................................................................................... 12 Alluvial deposits (Czaf, Czag, Czak) .............................................................................................................. 12 Quaternary colluvium and sheetwash deposits (Qc, Qw) ..............................................................................