Consider this : https://en.wikipedia.org/wiki/Earth_mass#Variation

To quote:

The main factor in mass gain is in-falling material, cosmic dust, meteors, etc. are the most significant contributors to Earth's increase in mass. The sum of material is estimated to be 37000 to 78000 tons annually

I would like to know, if there is an estimate of chemical composition of mass. That is , I am looking for a categorization of this mass in x% Carbon, y% Silicon, etc.

Thank you.

  • $\begingroup$ There's gain and loss. The gain-part would probably follow meteorite composition. Maybe relevant: earthscience.stackexchange.com/questions/16688/… $\endgroup$ – user22279 Apr 24 at 9:53
  • $\begingroup$ @Earthworm of course, but my question is the bulk chemical composition of the incoming meteor and cosmic dust $\endgroup$ – Sean Apr 24 at 11:14
  • 2
    $\begingroup$ Then just look up what ordinary and carbonaceous chondrites are made of, and you're set to go.. $\endgroup$ – AtmosphericPrisonEscape Apr 24 at 11:52

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