CC3 (entity_id = 196): Decay constants are:  238U = 1.55125E-10, 234U=2.835E-6, 230Th=9.915E-6, 232Th = 4.948E-11. (230Th/232Th) ratios all >20 and all apart from one (youngest sample) > 100 so, no detrital correction applied. Th isotope ratios reported in Table 1 p. 1024 of McDermott et al. (1999) Quaternary Science Reviews 1021-1038.