formation level การใช้

• Each of the subgroups is in turn subdivided to formation level.
• Telford kept the natural formation level and used masons to camber the upper surface of the blocks.
• The width of the line at formation level is 11 feet on the embankments and 12 feet in cuttings.
• Although, due to its decreased established size, Brigades rather than Divisions were used at a manoeuvre formation level.
• The work has picked up pace with the tracks already being placed and the island platform complete up to the formation level.
• The Pottsville was previously mapped in the Illinois basin as well at the Formation level, but was renamed the Tradewater Formation in 1997.
• The Clach Alasdair Conglomerate Member and the Laig Gorge Sandstone & Limestone Members are rock units below formation level, assigned to the Strathaird Limestone Formation.