Lithologic geochemical branch gene LG11 as well as construction method and application thereof

The invention discloses a lithologic geochemical branch gene LG11, a construction method of the lithologic geochemical branch gene LG11 and application of the lithologic geochemical branch gene LG11 to classification of geological samples with lithologic geochemical gene classification LGCR as 11 type. The lithologic geochemical branch gene (named as LG11) constructed by the invention can be used for further classifying the geological sample of which the lithologic geochemical gene classification LGCR is 11 type in detail based on the characteristic similarity of the lithologic branch gene; compared with geological mapping, the method is suitable for wider geological samples such as rocks, soil, water-based sediments, lake sediments, river sediments and the like, has a wide application prospect, and is a good technical supplement especially when mapping is carried out in a coverage area where bedrock outcrops do not develop; meanwhile, when the method is used for tracing the 11-type geological sample, the tra