gault clay造句

• The underlying ground is made of Gault Clay and Upper Greensand.
• Then under even deeper seas, Gault Clay and the Upper Greensand were deposited.
• Alice Holt Forest was noted for the oak woodlands that grew on its thick Gault clay.
• The underlying geology of Cambridge consists of gault clay and Quarries Act 1894 and competition from America ended production.
• Coprolites are phosphate-rich fossils found below the surface in deep by rarely more than wide Gault clay beds.
• The Wealden Group is overlain by the Lower Greensand and the Gault Formation, consisting of the Gault Clay and the Upper Greensand.
• Sherbourne Pond lies mainly on Gault clay, while its northern end and the stream connecting the two ponds lies on Upper Greensand.
• The Gault Clay contains phosphate-rich nodules in discrete bands and has a rich marine fauna with abundant ammonites, bivalves and gastropods.
• This type of preservation is found in ammonites such as " Hoplites " from the Cretaceous Gault clay of Folkestone in Kent, England.
• Its boundary is indistinct, but roughly conforms to that part of the catchment area of the Greensand and Gault clay close to the chalk hills.
• Other marine fossil eggs are known from the Oxford Clay and Gault Clay, although scientists don't know what kind of animals laid them.
• This dome consists of an upper layer of chalk above successive layers of Upper Greensand, Gault Clay, Lower Greensand, Weald Clay, and Wealden sandstone.
• In terms of geology, overlying the rather older Hythe, Sandgate and Folkestone Beds under even deeper seas, Gault Clay and the Upper Greensand were deposited.
• Then deep seas, Gault Clay and the Upper Greensand deposits form the deep soil, more evident where erosion has taken place on steeper hillslopes in the civil parish.
• The parish covers about in a strip of land that, from west to east, is composed of Kimmeridge clay, Lower Greensand, Gault Clay, Upper Greensand and chalk.
• It comprises the Gault Formation ( informally / traditionally the Gault Clay or Blue Marl ) and the overlying Upper Greensand Formation ( earlier known as the Malm or Malm Rock ).
• Below it lie successively older strata of alternating clays and sandstones laid down in the Lower Cretaceous, namely Upper Greensand, Gault Clay, Lower Greensand, Weald Clay and the Hastings Beds.
• In the 1986 87 survey, previous findings were reinforced, and the characteristics of the gault clay and the tunnelling medium ( chalk marl that made up 85 % of the route ) were investigated.
• The location is based on unstable terrain owing to the underlying Gault Clay strata, resulting in a succession of huge landslips giving the area a very rugged appearance akin to the better known Jurassic Coast.
• A number of minor tributaries join the river from the west and are typically Wealden Clay at Brockham, passing Betchworth Castle and flowing briefly across greensand and Gault Clay to Pixham, north east of Dorking.