The Genesis of Blue Diamonds - Sorbonne Université Accéder directement au contenu
Poster De Conférence Année : 2019

The Genesis of Blue Diamonds

Résumé

Forming fluid: Primary and secondary inclusions may be the witness of a H 0-C parent fluid 2 graphite Mineral assemblage: Inclusion of Ilmenite : Eclogitic paragenesis at lithospheric depth Inclusion of walstromite (retrogressed Ca-Perovskite (CaTiO3); >9 Gpa): Sub-lithospheric depth Boron: inherited from sea water through the subduction zone : H 0 + C + boron, available in the 2 organic lithosphere after slab dehydration: Data suggest a deep recycling of marine fluids that may be the the parents of blue diamonds We suggest that blue diamonds are not exclusively ultra-deep and may form at any depth in the mantle, from lithosphere (>150km) down to the lower mantle (~750 km), in subduction-related B-CH O-rich fluids.
Fichier principal
Vignette du fichier
_Congre-warwick-diam-V6-28juin.pdf (5.78 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-02506335 , version 1 (12-03-2020)

Identifiants

  • HAL Id : hal-02506335 , version 1

Citer

Lucille Daver, Helene Bureau, Eloise Gaillou, E. Boulard, Benoît Baptiste, et al.. The Genesis of Blue Diamonds. 2019 Diamond Conference, Jul 2019, Warwick, United Kingdom. ⟨hal-02506335⟩
131 Consultations
37 Téléchargements

Partager

Gmail Facebook X LinkedIn More