Thorium and uranium isotopes in upper Pleistocene sediments of the Baffin Bay

Concentrations and activity ratios of uranium and thorium isotopes (234U/238U, 230Th/232Th) were determined at about 5-m intervals through the composite top 22-m sequence of...在顶部22米的复合沉积序列中，研究人员以约5米的间距测定了铀和钍同位素的浓度及其活度比值（234U/238U、230Th/232Th）。