Geology of Kent into northern France. The fold arises from the continuing Alpine orogeny and results in the general northward dip of the rock strata in most of Kent. There are extensive spreads of coastal and estuarine alluvium on the Thames Estuary coast, in the low ground surrounding the Isle of Thanet and across Romney Marsh. Alluvium also floors the valleys of the River Medway and Stour. 'Clay-with-flints' is a commonly occurring deposit across the North Downs which is a product of periglacial conditions during the last ice age. Loessic deposists, of aeolian origin i.e. windblown, are common in east Kent, especially on
The Larches, Kent The Larches, Kent The Larches is a nature reserve north-east of Detling, which is north of Maidstone in Kent. It is managed by Kent Wildlife Trust. It is part of the Wouldham to Detling Escarpment Site of Special Scientific Interest and Nature Conservation Review site, Grade I It is also part of the North Downs Woodlands Special Area of Conservation, and Kent Downs Area of Outstanding Natural Beauty, This site has chalk grassland, woods and scrub. Grassland flora include autumn gentian, pyramidal orchid and broad-leaved helleborine, and there are butterflies such as the chalkhill blue and marbled white. There is