A new approach to revealing the composition of kimberlite melts and their deep m...
A new approach to revealing the composition of kimberlite melts and their deep mantle source
The overarching aim of this project is to provide novel constraints on the composition of the Earth’s deep mantle, particularly its volatile content, by undertaking an innovative geochemical and isotopic study of the deepest forme...
ver más
¿Tienes un proyecto y buscas un partner? Gracias a nuestro motor inteligente podemos recomendarte los mejores socios y ponerte en contacto con ellos. Te lo explicamos en este video
Proyectos interesantes
SalFluMa
Saline Fluids in the Mantle Experimental Investigation of...
159K€
Cerrado
CGL2009-13758
METALOGENIA DE KIMBERLITAS Y CARBONATITAS EN ANGOLA: APLICAC...
246K€
Cerrado
RONDA PYROXENITES
Melting of a pyroxenite peridotite marble cake mantle Ronda...
163K€
Cerrado
CGL2011-26700
EVOLUCION DEL MANTO SUBCONTINENTAL LITOSFERICO EN EL NE DE E...
63K€
Cerrado
CGL2016-78796-C2-1-P
EVOLUCION GEOQUIMICA DEL MANTO DE ESPAÑA PENINSULAR DESDE EP...
77K€
Cerrado
PID2020-114872GB-I00
GENERACION EXPERIMENTAL DE FLUIDOS METAMORFICOS Y SU INTERAC...
230K€
Cerrado
Información proyecto KimberliteNewApproach
Duración del proyecto: 39 meses
Fecha Inicio: 2015-03-13
Fecha Fin: 2018-06-30
Líder del proyecto
STICHTING VU
No se ha especificado una descripción o un objeto social para esta compañía.
TRL
4-5
Presupuesto del proyecto
178K€
Fecha límite de participación
Sin fecha límite de participación.
Descripción del proyecto
The overarching aim of this project is to provide novel constraints on the composition of the Earth’s deep mantle, particularly its volatile content, by undertaking an innovative geochemical and isotopic study of the deepest formed melts on Earth: kimberlites. Kimberlite melts are derived from depths in excess of 150-200 km. They are important as the major host of diamonds and because entrain xenoliths (i.e. fragments) of upper mantle and deep crustal rocks during ascent to the surface, providing a major source of information about the geochemistry of the deep Earth. Despite their importance, the composition of primary kimberlite melts and their exact mantle source are hotly debated issues. This is due to contamination of kimberlite melts by mantle and crustal rocks during magma emplacement and near surface alteration of primary kimberlite mineralogy.
To determine the composition of primary kimberlite melts, I will employ a novel approach that combines radiogenic (Sr-Nd-Pb) and stable (C-O) isotope fingerprinting of melt inclusions in kimberlitic magmatic minerals (i.e. olivine and spinel), using innovative ultra-sensitive techniques. This approach will constrain if the carbonate-dominated melt inclusions truly represent examples of pristine kimberlite magma by quantifying processes like crustal contamination and degassing that may have altered the melt composition. I will investigate kimberlites from targeted localities from different parts of the world (South Africa, Canada, Greenland, Russia) and of variable age (Proterozoic to Cretaceous) to assess if there are spatial and/or temporal controls to kimberlite composition. The melt inclusions C-O isotope data, coupled with O isotope analyses of kimberlitic olivine, spinel and perovskite, are designed to test if recycled crustal material occurs in the deep mantle source of kimberlites, which would provide important new constraints on the global cycle of volatiles through geological time.