_=MSLINK:Integer,LEX_D:String,SHAPE:Geometry
mf1=651|GUNTHORPE FORMATION|POLYGON((-1.2 52.5,-1.2 52.6,-1.1 52.6,-1.1 52.5,-1.2 52.5))
mf2=269|MERCIA MUDSTONE GROUP|POLYGON((-1.3 52.5,-1.3 52.6,-1.2 52.6,-1.2 52.5,-1.3 52.5))