The aragonite stalagmite has been used to be a new paleoclimate archive recently, but the problem of how the aragonite to calcite transition affects δ~(18)O of aragonite stalagmites is still a puzzling problem. A stalagmite LH5, which was recovered from the Lianhua Cave, Central China, has been identified by XRD analyzing that its aragonite has partially inverted into calcite in the lower part in which the content of calcite ranges during 10%-27.5%. On the basis of 18 TIMS-U series ages and 311 δ~(18)O meas...