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1 :250 000 Sheet HYDROGEOLOGY OF THE GOVERNMENT OF WESTERN AUSTRALIA BREMER BAY 1 :250 000 SHEET HYDROGEOLOGICAL MAP EXPLANATORY NOTES SERIES WATER AND RIVERS COMMISSION REPORT HM 3 1997 WATER AND RIVERS COMMISSION WATER AND RIVERS COMMISSION Hyatt Centre 3 Plain Street East Perth Western Australia 6004 Telephone (08) 9278 0300 Facsimile (08) 9278 0301 D 1 :250 000 hydrogeology series D Record 1994/7 Dumbleyung LCD Digital data available MONTAGUE ~ MEDUSA SD 52 • SOUND 'I.- LONDON- BANKS In preparation ! 12 D~iRY hr- D CAMDEN SOUND ASHTON CAMSRIDGE PRINCEREGENT GULF ! 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BULLEN TRAINOR COLLIER MADLEY WARRI COBB RAWLINSON 24 4 1 2 3 4 1 PEAK Hill NABBERU STANLEY HERBERT BROWNE SHARK'\ WOORAMEL GLENBURGH ROB~Jf N BENTLEY SCOTT BA'f_:" \ RA 6 6 7 8 5 7 8 5 \ \ 5 SG 50 -'---+----1----c-cc,----+-SG 51 5 ~ ~ GLENGARRY WILUNA ---t;;;:=;cc-1--=--===-+---":_ SG 52 KINGSTON YOWALGA TALBOT SG 49 I EDE~ 0 YARINGA BYRO BELELE ROBERT COOPER 12 9 10 11 8 12 :\ 9 10 11 12 9 10 SANDSTONE SIA DUKETON THROSSELL WESTWOOD LENNIS \ AJANA MURGOO CUE SAMUEL WAIGEN 14 15 16 13 14 15 13 16 13 14 LEONORA LAVERTON 0 GERALDTON- YALGOO KIRKALOCKA YOUANMI RASON NEALE VERNON WANNA 2a HOUTMAN ABROLHOS 2 3 4 1, \ \ PERENJORI NINGHAN BARLEE MENZIES EOJUDINA MINIGWAL PLUMRIDGE JUBILEE MASON _I 7 8 5 6 7 8 DONGARA· --2- SH 50 --'-~1---------'-+-~---=t--~SH 51 5 6 SH 52 HILL\RIVfR MOORA BENCUBBIN JACKSON Go'h'llli~ KURNAUP? CUNDEELEE SEEMORE LOONGANA FORREST 5,9 \ 10 11 12 9 10 11 12 g 10 \' PERTH ~ilk~~ si¼11~RN 2~~- o J'Jg~~iP ZANTHus NARETHA MADURA EUCLA \ 14 15 16 14 15 16 13 14 ./ PINJARRA CORRIGIN HYDEN LAKE NORSEMAN BALLA- CULVER 1-1r,1-1N. 32° JOHNSTON DONIA NDONAERA ) ABBIE 2 3 4 1 2 3 ~ 1 D~BLE- NEWDE- 0 ESPERANCE- MALCOLM- r-- COLLIE UNG GATE RAVENS- MONDRAIN CAPE ARID I ('/ THORPE ISLAND I-, 7 5 BUSSELTON- ~ SI 50 B/ 0 - -- SI 51 ..LJ..1.. AUGUSTA PEMBERT0~1- D ~ I e o - RWIN INLE BARKER- J!A~rr ~ 10, 14 _21 , 15,,-' _---1£. ALBANY - 120° 114° 126" COVEA.DGN MAY 97 Cover Photograph: Pallinup Siltstone outcrop along the banks ofBr emer Rive,~ HYDROGEOLOGY OF THE BREMER BAY 1 :250 000 SHEET by W. J. DODSON Water and Rivers Commission Resource Investigation Division , WATER AND RIVERS COMMISSION HYDROGEOLOGICAL MAP EXPLANATORY NOTES SERIES REPORT HM 3 1997 Recommended Reference DODSON, W. J., 1997, Hydrogeology of the Bremer Bay 1 :250 000 sheet: Western Australia, Water and Rivers Commission , Hydrogeological Map Explanatory Notes Series, Report HM 3, 28p. Copies available from : Resource Investigation Division Water and Rivers Commissiol1' 3 Plain Street EAST PERTH WESTERN AUSTRALIA 6004 Telephone (08) 9278 0522 Facsimile (08) 9278 0586 · ISBN 0-7309-7304-2 ISSN 1328-1194 Tex t printed 0 11 recycled s tock, Onyx JOO % recycled 135gs 111 Cove,; Topkote Dull R ecycled 256gs111 July / 99 7 Contents Abstract ............................................................................................................... 1 1 Introduction .................................................................................................... 3 1.1 Location ... ... ... .... ....... ........... ...... ..... ..... .. .... ............... ... .. .... .. ......................... .. .. ........... ..... ........... .... .. .. .. 3 1.2 CliJ.nate .. .. ..... ................... ............ ... ... .. .... .... ·. ... .. .... ... ... ..... ..... ... .. .... ..... .. ... ..... ........ .. .... .... .... ..... .......... .... 3 1.3 Physiography ... ...... ................ ... ... ............... .. .. ... ... ... ..... .. ... ... ... .. ... ....... ........... .. ......... .............. ... ... ....... 3 1.4 Vegetation .. .. ... ... .. ... ....... .. ......... .... ....... ....... .. :. ... .. .......... ......... .. .... ........ ...... ... .... ..... ... ............ ... ... ....... .. 4 1.5 Previous investigations ... ................... .... .. ............... ... ... .. .. ... .... ..... .. .. .. .. ......... .. ............... .. .... ....... .. ....... 5 1.6 Map c01npilation .. .. ................. ... .......... ............. .. ... ... .. .. ... .......... .. ..... .................... .. .. ...... .... ... .. .. ............ 6 2 Geology ... ............. .. ....................................................................... ................. 7 2.1 Regional setting .... ... ........ .. ......... ........ ...... ....... .. .. .... .......................... ........ .. ......... ... ........ .. .... .. ......... ..... 7 2.2 Archaean ..... .... ....... .. ..................... .......... ... ...... .. ........... .. .. .... ................... ....... ............... .. .. .......... ......... 7 2.3 Proterozoic ... ... ........... .. .. ... .. .. ... .. .. ... ... ... ... ... .. .. .... ... ... .. .. ... ... ... ... .. ................ .. .......... .. ........ .. ................... 8 2.3.1 Gneiss ... .. .... .... .. ... .... .... .... ................ ..... ................. .. .... ............. ................ .. ............................ .. .. 8 2.3.2 Mount Barren Group ................. .... .. .. .. .... .... .. ................... .. ..... .......... .. ........ .. .. ... ... .. .... ........ ....... 9 2.3.3 Gnowangerup dyke swarm .. ........... ... .. ..... .... ... .. .. .. .. .... .. ... .. .. ...... ..... .... ...... .. ........ ........ .............. 9 2.4 Cainozoic .. ............... .. .. .... .... .. .... ............. ... ... ... ................. .............. .... .... .................. .. .. ........ .. ............... 9 2.4.1 Teritaiy Werillup Formation ...................... ........... .. ...... .............. ....... ............ .. .. .. ............. .. ..... .... 9 2.4.2 Tertiary Pallinup Siltstone .. .... .. .. ...... ........... .. .. .. .. ...... .. .. .......... .. .... .. .. ............ .... .... ... ....... ,..... .. 10 2.4.3 Quaternary coastal sediments ..... ............................... ......... .. .. .... .. .... ................................... .... 10 2.4.4 Quaternary surficial sediments ..... ..................... .... ... .. .. ... ..... ... .......... .. .... ... .. .... .. ...................... 10 3 Hydro geology ........... ... ............... ................................................................... 11 3.1 Groundwater occurrence ... ........... .... ................. .. .... ... ..... .... ......... .................. ........................... .. ........ 11 3.2 Regional watertable ........ .................. ... ..... ........................ .. .................... ...................... .. .. ............. .. .... 12 3.3 Groundwater flow and discharge ... .. .... ..... .. .. .. ................... .. ..... ... ........ .... .......... .............. .. .. ................ 12 3.3.1 Lakes ............. ..... ... ... .... .. ... ... .... ............... .. ... .......... .... .. .... ............... .. .. ...... ... .... .. ....... .......... ..... 12 3.4 Aquifers ........ .... .. ...... .......... .. .. .. ...... .. .......... ...... .... .. ... .. .. ........ .... .... .................... .. ... .... .. ....... ... .... ... .. ... 12 3.4.1 Quaternary coastal sediments .......................... .. .. ... ... ..... ..... ........................... ................ .. ....... 13 3.4.2 Quaternary surficial sediments ......... ..... .... .................................. .. .... .. .. .... ..... .... .. .................... 13 3.4.3 Tertiary Pall in up Siltstone ......... ... ............. .............. .. ... .. ... .......... .... .. .......................... ............. 13 3.4.4 Te1tiary Werillup Formation ............................. ........ .. .... .. ........................ .......... ......... .. .. .... ... ... 14 3.4.5 Proterozoic Mount Barren Group ... ..................................... .. .... ... ................ .. .. ..... .. ................. 15 3.4.6 Archaean granite ............ .. ..... ... ........ ................ ..... .. ... .. ......... .. ... .......... .. ....... ........... .... ... .. .... .. .. 15 3.4.7 Archaean and Proterozoic gneiss .. .. .. .......... .... ............. ...... ... ................ ..... .. .. .... .. ...... .. ... ..... .... 15 3.5 Groundwater quality .. ... ... ..... ... .... .................... .. ... ... .. ..... ............. ................ .. ....... .. ... ... .. ........... .......... 16 3.5.1 Regional groundwater salinity ..... ...... .......... .. .. ... ..... .... ............ ... .............. .. ... .. .. ................ ... ... 16 3.5.2 Hydrochemist1y
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