| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,771,205,638 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
lower mantle |
Also found in: Dictionary/thesaurus, Wikipedia | 0.04 sec. |
|
lower mantle [′lō·ər mant·əl] (geology) The portion of the mantle below a depth of about 600 miles (1000 kilometers). Also known as inner mantle; mesosphere; pallasite shell. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | |
|---|---|---|
The lower mantle, a thick region of Earth's inner structure, lies just outside the planet's core. Others contend that propagating cracks in the lithosphere create oceanic islands, that plumes do not exist, that the upper and lower mantle are isolated and depleted, and that MORB and OIB form from the same upper-mantle reservoir. Deeper inside Earth, in the lower mantle or the core, temperatures are too high for diamonds to form. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|