IODP SEDIS - Thesaurus -

U-238/Th-232
BT	isotopes
	.radioactive isotopes
	..U-238/Th-232
BT	metals
	.actinides
	..thorium
	...U-238/Th-232
BT	metals
	.actinides
	..uranium
	...U-238/Th-232
UF	Th-232/U-238
RT	Th-232
	U-238
SN	This term has multiple hierarchies.