chalk marl造句

• To avoid confusion, microfossil assemblages were used to classify the chalk marl.
• The chalk marl was conducive to tunnelling, with impermeability, ease of excavation and strength.
• As a result the castle moats had to be cut over 10 metres deep into the layer of chalk marl.
• As a result, the castle moats had to be cut over 10 metres deep into the layer of chalk marl.
• The TBMs were of a closed nature during the initial, but then operated as open, boring through the chalk marl stratum.
• Surveying undertaken in the 20 years before construction confirmed earlier speculations that a tunnel could be bored through a chalk marl stratum.
• Above her was the metal skin of the train, the prefabricated concrete lining of the tunnel, about 45 yards of chalk marl seabed, and the English Channel.
• The lowest layer of the chalk is the Chalk Marl, which, with the Totternhoe Clunch Stone above it, lies at the base of the Chiltern Hills escarpment.
• The name " Calenberg " clearly indicates that the chalk marl stratum was not tree-covered, but stood proud of the Leine meadows as a " bare hill ".
• On the English side the chalk marl ran along the entire length of the tunnel, but on the French side a length of had variable and difficult geology.
• On the English side, a marshalling area was below the top of Shakespeare Cliff, the New Austrian Tunnelling method ( NATM ) was first applied in the chalk marl here.
• 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.
• It is made from a chalk marl slab ( " Kalkmergelbank " ), has a height of and was formed almost 100 million years ago at the beginning of the Upper Cretaceous series in Cenomanian stage.
• The river terrace of the Leine had, in former times, laid down gravel to the north and south of the chalk marl step, that was later covered with loess and river loam ( " Auelehm " ).