230Th dating results of speleothem records from two caves, central-eastern an...

d234U = ([234U/238U]activity - 1)x1000.d234Uinitial was calculated based on 230Th age (T), i.e., d234Uinitial = d234Umeasured x e**l234xT.Corrected 230Th ages assume the initial...δ²³⁴U（d234U）= ([²³⁴U/²³⁸U]活度 - 1)×1000。初始δ²³⁴U（d234U_initial）依据钍-230（²³⁰Th）年龄（T）推算得出，计算公式为：d234U_initial = d234U_measured × e^(λ₂₃₄×T)。经校正的钍-230年龄以初始……为假设前提。