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East Yilgarn Geoscience Database, 1:100 000 Geology Menzies to Norseman — an Explanatory Note

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East Yilgarn Geoscience Database, 1:100 000 Geology Menzies to Norseman — an Explanatory Note REPORT EAST YILGARN GEOSCIENCE DATABASE 78 1:100 000 GEOLOGY MENZIES TO NORSEMAN — AN EXPLANATORY NOTE GOVERNMENT OF WESTERN AUSTRALIA by P. B. Groenewald, M. G. M. Painter, F. I. Roberts, M. McCabe, and A. Fox GEOLOGICAL SURVEY OF WESTERN AUSTRALIA DEPARTMENT OF MINERALS AND ENERGY GEOLOGICAL SURVEY OF WESTERN AUSTRALIA REPORT 78 EAST YILGARN GEOSCIENCE DATABASE, 1:100 000 GEOLOGY MENZIES TO NORSEMAN — AN EXPLANATORY NOTE by P. B. Groenewald, M. G. M. Painter, F. I. Roberts, M. McCabe, and A. Fox Perth 2000 MINISTER FOR MINES The Hon. Norman Moore, MLC DIRECTOR GENERAL L. C. Ranford DIRECTOR, GEOLOGICAL SURVEY OF WESTERN AUSTRALIA David Blight Copy editor: C. D'Ercole REFERENCE The recommended reference for this publication is: GROENEWALD, P. B., PAINTER, M. G. M., ROBERTS, F. I., McCABE, M., and FOX, A., 2000, East Yilgarn Geoscience Database, 1:100 000 geology Menzies to Norseman — an explanatory note: Western Australia Geological Survey, Report 78, 53p. National Library of Australia Cataloguing-in-publication entry East Yilgarn geoscience database : 1:100 000 geology Menzies to Norseman - an explanatory note. Bibliography. ISBN 0 7307 5645 9 1. Geology - Western Australia - Eastern Goldfields - Databases. 2. Geological mapping - Western Australia - Eastern Goldfields - Databases. I. Groenewald, P. B. II. Geological Survey of Western Australia. (Series : Report (Geological Surevy of Western Australia) ; 78). 559.416 ISSN 0508–4741 Grid references in this publication refer to the Australian Geodetic Datum 1984 (AGD84) Printed by Lamb Print Pty Ltd, Perth, Western Australia Copies available from: Information Centre Department of Minerals and Energy 100 Plain Street EAST PERTH, WESTERN AUSTRALIA 6004 Telephone: (08) 9222 3459 Facsimile: (08) 9222 3444 www.dme.wa.gov.au Contents Abstract .................................................................................................................................................................... 1 Introduction ............................................................................................................................................................ 1 Extent, access, and physiography ................................................................................................................ 2 The database ........................................................................................................................................................... 4 Themes ............................................................................................................................................................. 4 Geology..................................................................................................................................................... 4 Regional solid geology ........................................................................................................................... 4 Airborne magnetic survey ..................................................................................................................... 4 Landsat TM layers ................................................................................................................................... 5 Mine workings, exploration sites, and MINEDEX ............................................................................ 5 Mining tenements .................................................................................................................................... 5 Map extraction from the database ................................................................................................................ 5 Archaean geological setting ................................................................................................................................. 8 Lithostratigraphy and tectonic domains.................................................................................................... 1 1 Kalgoorlie greenstones ......................................................................................................................... 1 1 Bullabulling, Boorara, Menzies, and Parker domains .............................................................. 1 4 Gindalbie domain .................................................................................................................................. 1 4 Edjudina–Laverton greenstones ......................................................................................................... 1 4 Norseman greenstones .......................................................................................................................... 1 4 Southern Cross Province ...................................................................................................................... 1 5 Models of tectonic settings and crustal evolution in the Eastern Goldfields Province ..................... 1 5 Archaean rocks and their distribution .............................................................................................................. 1 8 Ultramafic rocks............................................................................................................................................ 1 8 Mafic volcanic rocks .................................................................................................................................... 1 9 Intermediate rocks ........................................................................................................................................ 1 9 Felsic rocks .................................................................................................................................................... 2 0 Sedimentary rocks ........................................................................................................................................ 2 0 Quartz–feldspar porphyry........................................................................................................................... 2 1 Mafic to ultramafic intrusions .................................................................................................................... 2 2 Granitoid rocks ............................................................................................................................................. 2 3 Metamorphic rocks....................................................................................................................................... 2 4 Structure ................................................................................................................................................................ 2 4 General deformational history .................................................................................................................... 2 4 Validity of interpreted structural boundaries ........................................................................................... 2 7 Seismic reflection profiling ......................................................................................................................... 2 8 Metamorphism...................................................................................................................................................... 2 8 Regional metamorphism .............................................................................................................................. 2 8 Hydrothermal metamorphism .................................................................................................................... 3 0 Proterozoic geology ............................................................................................................................................ 3 2 Mafic and ultramafic dykes ........................................................................................................................ 3 2 Phanerozoic geology ........................................................................................................................................... 3 2 Permian sedimentary rocks ......................................................................................................................... 3 2 Tertiary — Eundynie Group ...................................................................................................................... 3 2 Regolith and surficial deposits .................................................................................................................... 3 2 Exploration and mining ...................................................................................................................................... 3 3 Database themes ............................................................................................................................................ 3 4 MINOCC — localities of mine workings, prospects, and subsurface observations ................... 3 4 MINEDEX layer .................................................................................................................................... 3 4 TENGRAPH record of the extent, location, and status of tenements ........................................... 3 4 Gold ................................................................................................................................................................ 3 4 Nickel .............................................................................................................................................................. 3 6 Base metals and other commodities
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