Assertion: noble gas's number | /r/HasProperty | ice core
Facets:
value: primarily
type: DEGREE
Source sentences:
text: Argon-39, with a half life of 269 years, has been used for a number of applications, primarily ice core and ground water dating.
text: Argon-39, with a half-life of 269 years, has been used for a number of applications, primarily ice core and ground water dating.