SUMMARY OF STRATA AT GEOLOGICAL SITES IN LONDON KEY Rock Units Post-Anglian Pre-Anglian Quaternary Bedrock H Holocene DH Dollis Hill Gravel BE Brickearth WF Woodford Gravel KP Kempton Park Gravel SM Stanmore Gravel TG Taplow Gravel CF Chelsfield Gravel HG Hackney Gravel FG Finsbury Gravel LH Lynch Hill Gravel Other BH Boyn Hill Gravel * None recorded DF Dartford Heath Gravel ***Strata recorded but not visible OH Orsett Heath Gravel - Man-made Till Pre-Anglian Formation Bagshot Member Claygate Clay London Formation Harwich Group Lambeth Sand Thanet Group Chalk BP Black Park Gravel Post-Anglian GLA Site no. and name GLA 01 Abbey Wood * *** GLA 14 Gilbert's Pit *** GLA 18 Harrow Weald SM GLA 19 Hornchurch Cutting OH SSSI GLA 33 Elmstead Pit GLA 34 Harefield Pit GLA 35 Wansunt Pit DF GLA 03 Beckenham Place Park GLA 04 Chelsfield Gravel CF GLA 06 Croham Hurst * GLA 07 Crystal Palace Geological Illustrations - - - - - - - - - - GLA 08 Dog Rocks GLA 17 Happy Valley GLA 20 Horsenden Hill DH GLA 22 Keston Common *** GLA 26 Riddlesdown Quarry GLA 29 The Gravel Pits, Northwood GLA 30 Cray Valley Golf Course Sand Pit GLA 31 North End Pit BE GLA 32 High Elms Dene Hole GLA 36 Pinner Chalk Mines GLA 37 Marks Warren Farm, Romford BP GLA 38 Chalky Dell, Lesnes Abbey Woods RIGS GLA 39 Erith Submerged Forest and Saltings H GLA 40 Chislehurst Caves GLA 41 Klinger Pit, Foots Cray GLA 42 Kenwood House Quarry Hampstead Heath GLA 43 Springfield Park HG GLA 44 Highgate Woods & Queens Wood ? GLA 45 Bedfords Park, Havering Ridge SM GLA 46 Rainham Submerged Forest H GLA 47 South Hall Farm/Spring Farm Complex TG GLA 48 Thames Foreshore, Isleworth GLA 49 Fairlop Quarry Complex (Hainault Quarry) BH GLA 50 Knighton Wood WF GLA 60 Bournewood GLA 61 Spring Parl, Threehalfpenny Wood & Sparrows Den *** GLA 62 Sipson Road Complex TG GLA 02 Avenue House GLA 05 Chingford Hatch WF GLA 09 Dry Valley GLA 12 Finsbury Gravel FG GLA 15 Hainault Forest Country Park SM GLA 24 Eliot Old Gravel Pit, Blackheath *** GLA 25 Putney Heath BP GLA 51 Parish's Pit, Erith GLA 52 Bromley Palace Park: Pulhamite & St. Blaise's Well - - - - - - - - - - GLA 53 Charmwood Farm Chalk Mine GLA 54 Sundridge Park Manor Pulhamite grotto - - - - - - - - - - GLA 55 Trent Park DH GLA 56 Bleak Hill Sandpit *** GLA 57 Wickham Lane Brick works Complex BE LIGS GLA 58 Coldfall Wood DH GLA 59 Pole Hill GLA 63 Barn Hill, Wembley DH GLA 64 Waterlow Park GLA 65 Vanbrugh Pit, Blackheath *** GLA 66 Tripcock Ness H GLA 67 Summerhouse Lane Chalk Pit GLA 68 Bedfont Lakes KP GLA 69 Wanstead Flats HG LH GLA 70 Richmond Park BP GLA 71 Hollow Pond, Leyton Flats (Snarebrook Park) BH GLA 72 Monken Hadley SM GLA 73 Greenwich Park H *** Strata of GLA sites 30/08/2018.