Sun_25.2.10_Geo

Bedrock consists of siltstone marble with infilled

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Unformatted text preview: deep rockhead (>160m) • Superficial materials consist of gravel, sand, mud etc. • Bedrock consists of siltstone, marble with infilled cavities etc. • Steep rockhead; faulting Regional Regional Geological Setting Site Site Geology – Fo Tan Site gm – Medium Grained Granite Site Site Geology – Au Tau Site Qpd (surficial deposits – silt/sand, gravelly, clayey) JTM Coarse Ash Crystal Tuff Desk Desk Study for Projects – Sources of Information GEO Technical Guidance Note No. 5 http://www.cedd.gov.hk/eng/publications/guidance_notes/doc/tgn5.pdf Present Present & Past Development Existing Slope Features – Fo Tan Site Fill Slopes http://hkss.cedd.gov.hk/hkss/index.htm Present Present & Past Development 2007 Aerial Photo – Fo Tan Site Present Present & Past Development 1993 Aerial Photo – Fo Tan Site Present Present & Past Development 1982 Aerial Photo – Fo Tan Site Present Present & Past Development 1974 Aerial Photo – Fo Tan Site Present Present & Past Development 1963 Aerial Photo – Fo Tan Site Present Present & Past Instability Within & Outside Site – Fo Tan Site Present Present & Past Instability Ongoing Ongoing LPMit Study (from SIS web-site) web- Present Present & Past Development Existing Slope Features – Au Tau Site 6NE-A/CR32 6NE-A/F125 6NE-A/C33 6NE-A/C3 6NE-A/C6 Present P...
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