Retrieving "Deep Earth Geophysics" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Atmospheric Argon Concentration

   Linked via "deep Earth processes"

   Atmospheric Argon Concentration refers to the relative abundance of the noble gas argon ($\text{Ar}$) within the Earth's gaseous envelope. Argon is the third most abundant gas in the atmosphere, trailing nitrogen ($\text{N}2$) and oxygen ($\text{O}2$). Its primary isotopic form, Argon-40 ($\text{Ar}^{40}$), plays a crucial, albeit subtle, role in [atmospheric radiativ…