Salinity situation statement Tweed River and Gnowergerup Brook
Salinity situation statement Tweed River and Gnowergerup Brook
Salinity situation statement Tweed River and Gnowergerup Brook
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Water Resource Technical Series <strong>Salinity</strong> <strong>situation</strong> <strong>statement</strong>: <strong>Tweed</strong> <strong>River</strong> <strong>and</strong> <strong>Gnowergerup</strong> <strong>Brook</strong> WRT 41<br />
Appendix C - Description of geological units<br />
Code Description<br />
Age Even-grained granite rocks - fine to coarse-grained granodiorite, adamellite <strong>and</strong> granite<br />
Age/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits on Age<br />
Agg Leucocratic adamellite, fine to coarse-grained with abundant pegmatite<br />
Agg/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits, on Agg<br />
Agv Fine to medium-grained adamellite <strong>and</strong> granite with scattered microcline megacrysts<br />
Agv/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits on Agv<br />
Even-grained hornblende-ebaring quartz monzonite. Local range to alkali granite <strong>and</strong><br />
Agze syenite. Often recrystallized <strong>and</strong> lineated<br />
Am Migmatite - b<strong>and</strong>ed <strong>and</strong> nebulitic, often strongly contorted<br />
Am/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits on Am<br />
Ana Augen gneiss, coarse-grained with microcline augen, strong cataclastic foliation<br />
Ana/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits on Ana<br />
Quartz-feldspar-biotite(-garnet) gneiss, generally well-b<strong>and</strong>ed. Includes blastomylonite<br />
Anb along Darling Scarp<br />
Anb/Blo Overprint, indicating bedrock largely obscured by residual <strong>and</strong> colluvial deposits on Anb<br />
Czc Conglomerate - cobbles <strong>and</strong> boulders in s<strong>and</strong> or clay matrix, variably lateritized<br />
Laterite - chiefly massive, but includes overlying pisolithic gravel <strong>and</strong> minor lateritized<br />
Czl s<strong>and</strong><br />
Czs S<strong>and</strong> overlying laterite - yellow, white, grey or orange<br />
Qra Alluvium - clay, s<strong>and</strong> <strong>and</strong> loam<br />
Qrc Colluvium, including valley-fill deposits, variably lateritized <strong>and</strong> podsolized<br />
Qrcs Colluvium - s<strong>and</strong>, often associated with older drainage courses<br />
Qrw Swamp <strong>and</strong> lacustrine deposits - peat, peaty s<strong>and</strong> <strong>and</strong> clay<br />
Tg<br />
Old alluvial deposits, strongly lateritized in part (includes Greenbushes Formation).<br />
Conglomerate, s<strong>and</strong> <strong>and</strong> clay.<br />
(Extracted from GSWA 2006)<br />
Department of Water 55
Change language