Table 1 84Kr/132Xe in different cosmochemical reservoirs of the solar system: comets31, chondrites (Q33, CC, EC; see Table S1), the subsolar component in EC53, solar (range given by93, estimated value by32), Martian reservoirs (surface99 and interior100), as well as the present-day terrestrial atmosphere19.

From: The origin and fate of volatile elements on Earth revisited in light of noble gas data obtained from comet 67P/Churyumov-Gerasimenko

 

84Kr/132Xe

Comet 67 P/C-G

4.7 ± 1.1

Q

0.81 ± 0.05

CC

1.20 ± 0.36

EC

1.84 ± 1.14

sub-solar

5.86 ± 0.84

Solar

20–29 (24.4)

Mars atmosphere

20.5 ± 2.5

Mars interior

1.2

Earth atmosphere

27.8

Back to article page