[meteorite-list] Did Asteroid Impacts Start Plate Tectonics?

Paul etchplain at att.net
Tue Sep 26 21:51:46 EDT 2017


Large meteorite impacts drove plate-tectonic processes
on the early Earth, PhysOrg, September 26, 2017
https://phys.org/news/2017-09-large-meteorite-impacts-drove-plate-tectonic.html

Did meteorites create the Earth’s tectonic plates?
Cosmos, September 26, 2017
https://cosmosmagazine.com/geoscience/did-meteorites-create-the-earth-s-tectonic-plates

The paper is:

O’Neill, C.,  Marchi, S., Zhang, S., and Bottke, W., 2017.
Impact-driven subduction on the Hadean Earth
Nature Geoscience (2017) doi:10.1038/ngeo3029
Received 12 December 2016 Accepted 22 August 2017
Published online 25 September 2017
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo3029.html?foxtrotcallback=true

Another article is:

Australian rocks suggest early Earth may not have
had plate tectonics, Cosmos, September 28, 2017
https://cosmosmagazine.com/geoscience/tremors-shake-tectonic-plate-theory

Plate Tectonics May Have Begun a Billion Years
After Earth's Birth, Live Science, September 21, 2017
https://www.livescience.com/60478-plate-tectonics-gets-new-age.html

The paper is:

Johnson, T.E., Brown, M., Gardiner, N.J., Kirkland, C.L.
and Smithies, R.H., 2017. Earth’s first stable
continents did not form by subduction. Nature,
543(7644), pp.239-242.
https://www.nature.com/nature/journal/v543/n7644/abs/nature21383.html

Yours,

Paul H.


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