Titre :

Specific OH infrared signatures in pyroxenes from mantle xenoliths: characteristics and possible bands assignments

Auteur(s) :

Ingrin, Jannick [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Azevedo-Vannson, Samantha [Auteur]
France, Lydéric [Auteur]

Titre de la manifestation scientifique :

ECMS 2019

Ville :

Prague

Pays :

République tchèque

Date de début de la manifestation scientifique :

2019-09-11

Discipline(s) HAL :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
Physique [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Sciences de la Terre

Résumé en anglais : [en]

Spectral signatures of infrared OH bands in pyroxenes from mantle xenoliths provide important information on water speciation in mantle lithospheres. We identified two characteristic types of spectral signatures in pyroxenes ...
Lire la suite >Spectral signatures of infrared OH bands in pyroxenes from mantle xenoliths provide important information on water speciation in mantle lithospheres. We identified two characteristic types of spectral signatures in pyroxenes from mantle xenoliths: (a) Cpx and opx dominated by OH bands at 3595, 3517 cm-1 and 3571, 3517 cm-1, respectively. (b) Cpx and opx dominated by OH bands at 3635, 3445 cm-1 and 3602, 3417 cm-1, respectively. To understand the origin of these signatures and the nature of H-defects associated with them it is essential to isolate and characterize each specific bands that compose the spectra. We present a low-temperature polarized infrared analysis of end-member signatures of these pyroxenes and identify the characteristics of the individual bands that compose their specific patterns. Possible bands assignments are discussed as well as possible strategies to implement identification.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Matériaux Terrestres et Planétaires

Date de dépôt :

2023-09-07T15:01:47Z
2023-09-07T17:48:51Z