Legend Drift Geology GREAT OOLITE GROUP ALLUVIAL FAN DEPOSITS GREAT OOLITE LIMESTONE ALLUVIUM HAZELBURY BRYAN FORMATION CLAY-WITH-FLINTS HAZELBURY BRYAN FORMATION AND KINGSTON FORMATION (UNDIFFERENTIATED) HANBOROUGH MEMBER HOLYWELL NODULAR CHALK HEAD (UNDIFFERENTIATED) FORMATION AND NEW PIT NORTHMOOR MEMBER CHALK FORMATION (UNDIFFERENTIATED) NORTHMOOR MEMBER, LOWER FACET INFERIOR OOLITE GROUP NORTHMOOR MEMBER, UPPER FACET KELLAWAYS CLAY MEMBER RIVER TERRACE DEPOSITS (UNDIFFERENTIATED) KELLAWAYS FORMATION AND OXFORD CLAY FORMATION RIVER TERRACE DEPOSITS, 1 (UNDIFFERENTIATED) RIVER TERRACE DEPOSITS, 1 TO 2 KELLAWAYS SAND MEMBER RIVER TERRACE DEPOSITS, 2 KIMMERIDGE CLAY FORMATION SAND AND GRAVEL OF UNCERTAIN AGE AND ORIGIN KINGSTON FORMATION SUMMERTOWN-RADLEY MEMBER LEWES NODULAR CHALK FORMATION, SEAFORD CHALK FORMATION WOLVERCOTE MEMBER AND NEWHAVEN CHALK Solid Geology FORMATION (UNDIFFERENTIATED) AMPTHILL CLAY FORMATION LOWER CALCAREOUS GRIT FORMATION AND KIMMERIDGE CLAY LOWER GREENSAND GROUP FORMATION (UNDIFFERENTIATED) LOWER JURASSIC AND MIDDLE BEACON LIMESTONE FORMATION JURASSIC ROCKS (UNDIFFERENTIATED) BRIDPORT SAND FORMATION OXFORD CLAY FORMATION CHALFIELD OOLITE FORMATION OXFORD CLAY FORMATION AND COMBE DOWN OOLITE WEST WALTON FORMATION (UNDIFFERENTIATED) CORAL RAG FORMATION RED DOWN IRONSAND MEMBER CORNBRASH FORMATION RHAXELLA CHERT FOREST MARBLE FORMATION STANFORD FORMATION FULLER'S EARTH FORMATION UPPER GREENSAND FORMATION WEST MELBURY CHALK FORMATION FULLER'S EARTH ROCK MEMBER AND ZIG ZAG CHALK GAULT FORMATION FORMATION (UNDIFFERENTIATED) Main Rivers District Boundary North Wiltshire District Reproduced from Ordnance Survey digital map data (c) Crown copyright 2006. All rights reserved. Licence number 100023455, 2007 Drawing Title Drawing Number Wiltshire Strategic Flood Figure 7 Risk Assessment Scale at A3 : 1:150,000 North Wiltshire Drw DH App HR Rev Solid and Drift Geology Chk CP Date 24.10.07 Date www.scottwilson.com.