Cosmogenic helium and neon in 11 Myr old ultramafic xenoliths: Consequences for mantle signatures in old samples
The helium and neon isotopic compositions of olivines coming from a 11 Myr old xenolith sampled at Mt. Hampton (West Antarctica) were analyzed by crushing. The helium isotopic ratio varies between 1340 and 6300 (R/Ra between 115 and 539) with 4He content around 3–8 10−10 ccSTP/g, confirming that cos...
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| Format: | article |
| Language: | eng |
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2010
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| Online Access: | http://hdl.handle.net/10174/2380 |
| Country: | Portugal |
| Oai: | oai:dspace.uevora.pt:10174/2380 |