"Remains of Moon-forming impact may lie deep in Earth" Topic
2 Posts
All members in good standing are free to post here. Opinions expressed here are solely those of the posters, and have not been cleared with nor are they endorsed by The Miniatures Page.
Please be courteous toward your fellow TMP members.
For more information, see the TMP FAQ.
Back to the Science Plus Board
Areas of InterestGeneral
Featured Hobby News Article
Featured Link
Featured Showcase ArticleBack to the plastic jungle…
Featured Profile ArticleTime to replace the equipment again!
|
Tango01 | 27 Mar 2021 4:37 p.m. PST |
"Scientists have long agreed that the Moon formed when a protoplanet, called Theia, struck Earth in its infancy some 4.5 billion years ago. Now, a team of scientists, based on new isotopic and modeling evidence, has a provocative new proposal: Theia's remains can be found in two continent-size layers of rock buried deep in Earth's mantle. Lava from islands tied to these deep layers, called large low-shear velocity provinces, indicates the LLSVPs may be ancient, forming from the time of the impact. And Apollo Moon rocks suggest that Theia was large, nearly the size of the early Earth, with an anomalously dense mantle. And that dense mantle lines up with models that would have allowed Theia's mantle to sink and persist in Earth for billions of years…" Main page link Armand |
ColCampbell | 28 Mar 2021 1:07 p.m. PST |
Unfortunately one has to be a member of AAAS or have log-in credentials for OpenAthens or Shibboleth or purchase the article for $15 USD in order to read more about this phenomenon. Too bad, that would be an interesting read. Jim |
|