Evan Smith On Diamonds From The Deep Mantle Geology Bites podcast

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Evan Smith on Diamonds from the Deep Mantle

10M ago 34:36

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Content provided by Oliver Strimpel. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Oliver Strimpel or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

We have only a tantalizingly small number of sources of information about the Earth’s deep mantle. One of these comes from the rare diamonds that form at depths of about 650 km and make their way up to the base of the lithosphere, and then later to the surface via rare volcanic eruptions of kimberlite magma. In the podcast, Evan Smith talks about a new class of large gem-quality deep-mantle diamonds that he and his coworkers discovered in 2016. Inclusions within these diamonds serve as messenger capsules from the deep mantle. They show an unmistakable genetic link to subducted oceanic slabs, and thus give us clues as to what happens to subducted slabs as the pass through the lower mantle transition zone.

Evan Smith is a Senior Research Scientist at the Gemological Institute of America, New York.

… continue reading

108 episodes

#Science #Geology #Oliver Strimpel

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Evan Smith on Diamonds from the Deep Mantle

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published 10M ago

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MP3•Episode home

Content provided by Oliver Strimpel. All podcast content including episodes, graphics, and podcast descriptions are uploaded and provided directly by Oliver Strimpel or their podcast platform partner. If you believe someone is using your copyrighted work without your permission, you can follow the process outlined here https://podcastplayer.com/legal.

We have only a tantalizingly small number of sources of information about the Earth’s deep mantle. One of these comes from the rare diamonds that form at depths of about 650 km and make their way up to the base of the lithosphere, and then later to the surface via rare volcanic eruptions of kimberlite magma. In the podcast, Evan Smith talks about a new class of large gem-quality deep-mantle diamonds that he and his coworkers discovered in 2016. Inclusions within these diamonds serve as messenger capsules from the deep mantle. They show an unmistakable genetic link to subducted oceanic slabs, and thus give us clues as to what happens to subducted slabs as the pass through the lower mantle transition zone.

Evan Smith is a Senior Research Scientist at the Gemological Institute of America, New York.

… continue reading

108 episodes

#Science #Geology #Oliver Strimpel

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