Nitrogen Isotopes and Mantle Geodynamics: The Emergence of Life and the Atmosphere-Crust-Mantle Connection

Abstract : Nitrogen shows unique features among the volatile elements. To be cycled, atmospheric di-nitrogen (N2) needs to be reduced, which is efficiently done by bacterial processes. Crustal uptake of nitrogen and its eventual recycling into the mantle is thus primarily mediated by the biosphere. There is also a marked isotopic contrast between the mantle (15N depleted) and the Earth's surface (15N enriched). Although the cause of such disequilibrium is not fully understood, it provides insights into mantle–surface interactions over geological time, including recycling of surface sediments into the deep mantle.
Document type :
Journal articles
Complete list of metadatas

https://hal.univ-lorraine.fr/hal-01763690
Contributor : Crpg Ul <>
Submitted on : Wednesday, April 11, 2018 - 12:36:42 PM
Last modification on : Monday, July 1, 2019 - 5:24:04 PM

Identifiers

Citation

Pierre Cartigny, Bernard Marty. Nitrogen Isotopes and Mantle Geodynamics: The Emergence of Life and the Atmosphere-Crust-Mantle Connection. Elements, GeoScienceWorld, 2013, 9 (5), pp.359 - 366. ⟨10.2113/gselements.9.5.359⟩. ⟨hal-01763690⟩

Share

Metrics

Record views

49