Serge (fabric) with worsted warp and a woollen weft. Denim is a cotton fabric with a similar weave; its name is believed to be derived from "serge de Nîmes" after Nîmes in France. Serge (fabric) Serge is a type of twill fabric that has diagonal lines or ridges on both sides, made with a two-up, two-down weave. The worsted variety is used in making military uniforms, suits, great coats and trench coats. Its counterpart, silk serge, is used for linings. French serge is a softer, finer variety. The word is also used for a high quality woolen woven fabric. The name is
A-type granite magnesium. There are lower levels of calcium and strontium. By using Ga/Al ratio, fractionated felsic I or S-type granites can overlap in apparent composition. Enriched alkalis include sodium, potassium, rubidium and caesium. Other depleted elements include barium, phosphorus, titanium and europium. Subtypes include A, anorogenic, derived from ocean island basalt; and A post-orogenic, derived by crustal melting or crust and mantle mixing. The source could be dry granulite left over from the loss of wet magma during orogenies. A-type granite A-type granites are a class of granite. They are characterised by low water and a lack of tectonic fabric. A