Explanatory Notes on the Turee Creek 1:250 000 Geological Sheet
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GEOLOGICAL SURVEY OF WESTERN AUSTRALIA 1:250 000 GEOLOGICAL SERIES-EXPLANATORY NOTES TUREE CREEK WESTERN AUSTRALIA SECOND EDITION SHEET SF50-15 INTERNATIONAL INDEX by A. M. THORNE, I. M. TYLER, AND W. M. HUNTER Perth, Western Australia 1991 04083-1 MINISTER FOR MINES The Hon. Gordon Hill, J.P., M.L.A. DIRECTOR GENERAL OF MINES D. R. Kelly DIRECTOR, GEOLOGICAL SURVEY OF WESTERN AUSTRALIA Phillip E. Playford ISSN 0729-3720 National Library of Australia Card Number and ISBN 07309 1107 1 Copies available from: Director Geological Survey of Western Australia 100 Plain Street EAST PERTH, WESTERN AUSTRALIA 6004 Telephone (09) 222 3222 CONTENTS INTRODUCTION ............................................................................................................. 1 Climate. vegetation. and physiography ......................................................................... 1 Previous investigations .................................................................................................. 2 Tectonic setting .............................................................................................................. 2 Terminology .................................................................................................................. 3 HAMERSLEY BASIN ...................................................................................................... 4 Fortescue Group ............................................................................................................. 4 Bellary Formation ....................................................................................................... 4 Mount Roe Basalt .......................................... :......................... ................................... 5 Hardey Formation ............................................................... :....................................... 5 Boongal Formation ..................................................................................................... 5 Pyradie Formation ...................................................................................................... 6 Bunjinah Formation .................................................................................................... 6 Jeerinah Formation ..................................................................................................... 6 Mafic and layered sills in the Fortescue Group ............................................................. 6 Hamersley Group ........................................................................................................... 7 Marra Mamba Iron Formation .................................................................................... 7 Wittenoom Dolomite .................................................................................................. 7 Mount Sylvia Formation and Mount McRae Shale .................................................... 7 Brockman Iron Formation .......................................................................................... 8 Weeli Wolli Formation ............................................................................................... 8 Woongarra Volcanics ................................................................................................. 8 Boolgeeda Iron Formation .......................................................................................... 9 Turee Creek Group ........................................................................................................ 9 Metamorphism ............................................................................................................... 9 ASHBURTON BASIN .................................................................................................... 10 Wyloo Group ............................................................................................................... 10 Beasley River Quartzite ............................................................................................ 10 Cheela Springs Basalt ............................................................................................... 10 Mount McGrath Formation ...................................................................................... 11 Duck Creek Dolomite ............................................................................................... 11 Ashburton Formation ................................................................................................ 12 BLAIR BASIN ................................................................................................................ 13 Capricorn Formation .................................................................................................... 13 CAPRICORN OROGEN-STRUCTURE AND METAMORPHISM ........................... 14 Structure ....................................................................................................................... 14 Ophthalmia Fold Belt ............................................................................................... 15 Ashburton Fold Belt ................................................................................................. 15 Metamorphism ............................................................................................................. 17 ... 111 04083-2 BRESNAHAN BASIN ................................................................................................... 18 Bresnahan Group ......................................................................................................... 18 Structure of the Bresnahan Basin ................................................................................ 18 BANGEMALL BASIN .................................................................................................. 19 Bangemall Group ........................................................................................................ 19 Edmund Subgroup ................................................................................................... 19 Irregully Formation .............................................................................................. 19 Cheyne Springs Formation ................................................................................... 20 Kiangi Creek Formation ....................................................................................... 20 Jillawarra Formation ............................................................................................. 20 Devil Creek Formation ......................................................................................... 21 Ullawarra Formation ............................................................................................ 21 Mucalana Subgroup ................................................................................................. 21 Mount Vernon Sandstone ..................................................................................... 21 Structure of the Bangemall Basin ............................................................................... 22 MAFIC DYKES ............................................................................................................. 22 CAINOZOIC GEOLOGY .............................................................................................. 23 ECONOMIC GEOLOGY ............................................................................................... 23 Gold ............................................................................................................................. 23 Copper ......................................................................................................................... 23 Lead and silver ............................................................................................................ 24 Iron .............................................................................................................................. 24 Asbestos ...................................................................................................................... 25 Uranium ...................................................................................................................... 25 REFERENCES ............................................................................................................... 26 MAP 1:250 000 geological map of TUREE CREEK ........................................... in back pocket FIGURE 1. Tectonic sketch map of TUREE CREEK ..................................................................... 3 iv Explanatory Notes on the Turee Creek 1950 000 Geological Sheet, Western Australia (Second Edition) by A. M. Thorne, I. M. Tyler, and W.M. Hunter INTRODUCTION The TUREE CREEK*1 :250 000 geological sheet (SF50-15 of the International Series) is bounded by latitudes 23" and 24"s and longitudes 117" and 118"30E. The name is derived from the Turee Creek which drains the northeastern part of the sheet area. The mining town of Paraburdoo (pop. 2000) is the largest settlement on TUREE CREEK. Sealed roads link the town to nearby Tom Price, and to the North West Coastal Highway, 270 km to the west. The Mount Vernon-Nanutarra gravel road crosses the southern and western part of TUREE CREEK. The pastoral stations of Ashburton Downs, Mininer, and Pingandy Creek occur in the southern part of TUREE CREEK; they are linked to each other, and to neighbouring stations, by a network of tracks which provide reasonable access to much of the area. CLIMATE, VEGETATION, AND PHYSIOGRAPHY The