IODP SEDIS - Thesaurus -

Ar-40/Ar-39
BT	isotopes
	.radioactive isotopes
	..Ar-40/Ar-39
BT	isotopes
	.stable isotopes
	..Ar-40/Ar-39
BT	noble gases
	.argon
	..Ar-40/Ar-39
UF	Ar-39/Ar-40
RT	isotope ratios
	Ar-39
	Ar-40
SN	This term has multiple hierarchies.