400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 0 25 50 SPT 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) 400 200 0 fs (kPa) 10 20 qc (MPa) Rhyolite tuff (ts): Fine grained rhyolitic tuff, white, sometimes slightly oxidised. Soil strengths with high water content and sensitive/quick behaviour. Typically white colouring. Dacite (iu): Completely weathered to slightly weathered dacite. Dacite encountered varies between brecciated, flow banded and massive. Completely weathered dacite has soil strength. Moderately to slightly weathered dacite is weak to strong. Typically grey with white and black phenocrysts. Some weathered dacite has purple tinge. Alluvium Ash Colluvium ts iu al co as il Ignimbrite (iI): Ignimbritic tuff with high proportion of gravel sized lithics. Completely weathered to slightly weathered. Completely weathered material has soil strengths, with some with sensitive/quick behaviour. Moderately to slightly weathered ignimbrite is extremely weak to weak. Often with greenish grey and light grey colouring. Homunga Rhyolite Uretara Formation Ignimbrite Boulder & Cobble Alluvium: Boulder and cobble alluvium supported, with weakly cemented matrix of sand and silt found beneath ignimbrite in paleo channel/gully. Boulders and cobbles are mainly rhyolitic and dacitic. Rhyolite (fr): Rhyolitic lava flows. Various forms encountered including flow banded, spherulitic, phenocrystic, brecciated. Weathering grades from completely weathered to slightly weathered. Often white and purple colouring. fr wn WRS4/4a(GHD) off 24m North CPT25b off 27m South CPT25 off 21m South CPT301 off 9m North CPT302 off 14m South WR8 CPTE14 off 13m South CPT304 WRS6(GHD) DH5a CPTE06 off 30m North CPTE07 off 32m North CPTE08 off 27m North WRS7(GHD) off 17m South DH9(WWC) off 15m South CPT308 off 17m North CPTE09 Alluvium Alluvium Dacite EoH Alluvium Lithics Ignimbrite E.O.H Alluvium CW Ignimbrite Boulder&Cobble Alluvium MW Ignimbrite E.O.H No Recovery Alluvium with Gravel Black hill dacite 23-108: Dacite 108-117m: Boulder&Cobble Alluvium 117-194m: Clay altered volcanics EoH: 194m Dacite EoH Ash 0 25 50 SPT DH4 Alluvium CW Dacite HW Dacite MW Dacite EoH Dacite EoH Ignimbrite is extremely weak and sensitive ? ? ? Ign. ? Could be CW Dacite SECTION 1 - 1:250 scale Figure 14
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