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Explanatory Notes on the Leonora 1:250 000 Geological Sheet, Western Australia (Second Edition) by A

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Explanatory Notes on the Leonora 1:250 000 Geological Sheet, Western Australia (Second Edition) by A EXPLANATORY NOTES LEONORA 1:250 000 SHEET WESTERN AUSTRALIA SECOND EDITION 1:250 000 GEOLOGICAL SERIES SHEET SH 51-1 INTERNATIONAL INDEX WESTERN AUSTRALIA MONTAGUE DRYSDALE- MEDUSA SD 52 SOUND LONDON- BANKS INDEX TO 1:250 000-SCALE DERRY 12 5,9 10 CAMDEN SOUND - ASHTON CAMBRIDGE PRINCE GEOLOGICAL MAPS REGENT GULF 16 15, 13 14 PENDER o YAMPI CHARNLEY MT LISSA 16 ELIZABETH DELL Second edition 2 3 4 1 2 BROOME DERBY LENNARD LANSDOWNE DIXON RIVER RANGE Third edition 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 ISLAND SPRING IS. 2 3 1 2 3 4 1 4 1 2 ALOOLA PYRAMID MARBLE NULLAGINE PATERSON SAHARA PERCIVAL HELENA STANSMORE ONSLOW YARR 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 UND TUREE NEWMAN ROBERTSON GUNANYA RUNTON MORRIS RYAN MACDONALD SF 49 MINILYA WINNING EDM 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 SH 52 HILLRIVER GO KURNALPI CUNDEELEE MOORA BENCUBBIN ORLIE FORREST 12 9 10 11 5,9 10 11 12 9 10 BOOR- WIDGIE- PERTH KELLER- SOUTHERN ZANTHUS NARETHA MADURA EUCLA BERRIN CROSS ABBIN MOOLTHA 13 14 15 14 15 16 16 13 14 o A CORRIGIN HYDEN LAKE NORSEMAN BALLA- CULVER BURN- 32 PINJARR JOHNSTON DO NOONAERA NIA 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 SW155A 15.4.04 GEOLOGICAL SURVEY OF WESTERN AUSTRALIA 1:250 000 GEOLOGICAL SERIES — EXPLANATORY NOTES LEONORA WESTERN AUSTRALIA SECOND EDITION SHEET SG 51-1 INTERNATIONAL INDEX by A. J. STEWART* * formerly from, and with the support of, Geoscience Australia Perth, Western Australia 2004 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: STEWART, A. J., 2004, Leonora, W.A. (2nd Edition): Western Australia Geological Survey, 1:250 000 Geological Series Explanatory Notes, 46p. ISSN 0729-3720 National Library of Australia Card Number and ISBN 0 7307 8957 8 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 51. All locations are quoted to at least the nearest 100 m. Copy editor: K. Blundell Cartography: D. Sutton Desktop publishing: A. Ferguson Published 2004 by Geological Survey of Western Australia These Explanatory Notes are published in digital format (PDF) and are available online at www.doir.wa.gov.au/gswa. Laser-printed copies can be ordered from the Information Centre for the cost of printing and binding. Further details of geological publications and maps produced by the Geological Survey of Western Australia can be obtained by contacting: Information Centre Department of Industry and Resources 100 Plain Street EAST PERTH, WESTERN AUSTRALIA 6004 Telephone: (08) 9222 3459 Facsimile: (08) 9222 3444 CONTENTS INTRODUCTION .................................................................................................................1 Physiography, climate, and vegetation .............................................................................1 Previous investigations .....................................................................................................3 Nomenclature ....................................................................................................................4 PRECAMBRIAN GEOLOGY ..............................................................................................4 Regional setting .................................................................................................................4 Agnew greenstone belt .................................................................................................5 Mount Clifford greenstone belt ....................................................................................6 Yandal greenstone belt .................................................................................................7 Murrin greenstones .......................................................................................................7 Malcolm greenstones ....................................................................................................7 Mount Ida greenstone belt ............................................................................................8 Maynard Hills greenstone belt .....................................................................................8 Archaean rock types ..........................................................................................................8 Ultramafic rocks (Au, Aup, Aur, Aus, Aut, Aux) ..........................................................8 Low- to medium-grade metamorphic rocks (Alb, Ald, Alf, Alfq, Alm, Alqb, Alqm) ...................................................................................................................9 Fine-grained mafic igneous rocks (Ab, Abam, Abb, Abba, Abc, Abd, Abf, Abg, Abm, Abp, Abs, Aby) ..........................................................................................11 Medium- to coarse-grained mafic igneous rocks (Aod, Aoda, Aodp, Aog, Aoga, Aol) ...................................................................................................................13 Felsic volcanic and volcaniclastic rocks (Af, Aff, Afp, Afpf, Afpq, Afs, Aft, Afv) .......................................................................................................................14 Sedimentary rocks (Ac, Aci, Acl, As, Asc, Ascb, Ascf, Ascq, Asf, Asg, Ash, AsJC, Asq, Ass) ...................................................................................................15 Granitoid rocks ...........................................................................................................18 Granitoid rock types (Ag, Agb, Agc, Agd, Age, Agf, Agfo, Agg, Agl, Agm, Agmc, Agmf, Agmm, Agmp, Agn, Agq, Ags, Agt, Agtp, Agy) ......................18 Minor intrusions, breccias, and ironstone (chx, d, g, gg, gqx, i, po, q, sy) ....................22 Felsic and mafic dykes (#di, #dy) ..................................................................................24 STRUCTURE ......................................................................................................................25 Major faults .....................................................................................................................25 Keith–Kilkenny Fault Zone and Keith–Kilkenny High-Strain Zone ........................26 Deformation sequence.....................................................................................................26 METAMORPHISM .............................................................................................................28 iii CAINOZOIC GEOLOGY ...................................................................................................29 ECONOMIC GEOLOGY ....................................................................................................30 Gold and silver ................................................................................................................31 Leonora Gold Camp ...................................................................................................32 Sons of Gwalia .......................................................................................................32 Harbour Lights .......................................................................................................32 Tower Hill ..............................................................................................................32 Agnew–Lawlers Gold Camp ......................................................................................33 Agnew (Emu) .........................................................................................................33 Redeemer ................................................................................................................33 Lawlers (Great Eastern) .........................................................................................33 Ungrouped mines and deposits ..................................................................................34 Tarmoola ................................................................................................................34
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