Open main menu
Home
Random
Recent changes
Special pages
Community portal
Preferences
About Wikipedia
Disclaimers
Incubator escapee wiki
Search
User menu
Talk
Dark mode
Contributions
Create account
Log in
Editing
Planetary core
(section)
Warning:
You are not logged in. Your IP address will be publicly visible if you make any edits. If you
log in
or
create an account
, your edits will be attributed to your username, along with other benefits.
Anti-spam check. Do
not
fill this in!
===Isotopic composition β Earth=== [[Hafnium]]/[[tungsten]] (Hf/W) isotopic ratios, when compared with a chondritic reference frame, show a marked enrichment in the silicate earth indicating depletion in Earth's core. Iron meteorites, believed to be resultant from very early core fractionation processes, are also depleted.<ref name="Wood, Walter and Jonathan 2006" /> [[Niobium]]/[[tantalum]] (Nb/Ta) isotopic ratios, when compared with a chondritic reference frame, show mild depletion in bulk silicate Earth and the moon.<ref name="Hauck and Van Orman 2011">{{cite journal |last1=Hauck |first1=S. A. |last2=Van Orman |first2=J. A. |title=Core petrology: Implications for the dynamics and evolution of planetary interiors |journal= AGU Fall Meeting Abstracts|volume=2011 |publisher=American Geophysical Union |date=2011 |pages=DI41Bβ03 |bibcode=2011AGUFMDI41B..03H }}</ref>
Edit summary
(Briefly describe your changes)
By publishing changes, you agree to the
Terms of Use
, and you irrevocably agree to release your contribution under the
CC BY-SA 4.0 License
and the
GFDL
. You agree that a hyperlink or URL is sufficient attribution under the Creative Commons license.
Cancel
Editing help
(opens in new window)