Wellington Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Wellington Formation
RTOklahoma
 Kansas
 Hutchinson Salt Member
SNIn Sumner Group. In Kansas, includes Milan Limestone Member at top; Hutchinson Salt Member in middle part but not exposed; Carlton Limestone Member below Hutchinson; Hollenburg Limestone Member near base. Central and S Kansas, and N Oklahoma.