Skip to Main content Skip to Navigation
Theses

Serpentinites néoprotérozoïques : une fenêtre sur la lithosphère océanique associée à la dislocation de Rodinia

Abstract : This Doctoral thesis focus on the end of the Precambrian, the Neoproterozoic, a pivotal period in the Earth history, by the study of ophiolitic units dated between 800 and 700 Ma. This work essentially deals with the petrography, geochemistry and magnetism of serpentinites from these ophiolites. They are associated with Panafrican orogenic belts along the West African and the Amazonian cratons and witnesses the subductions and the oceanic lithosphere associated to the break-up of the supercontinent Rodinia. The study of these neoproterozoic ophiolites allowed us to propose the formation settings for these sections of oceanic lithosphere. Another question behind this work is: Does the study of serpentinization and associated hydrothermalism allows one to provide constraints on the oceanic paleoenvironment?
Document type :
Theses
Complete list of metadatas

Cited literature [851 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-02001021
Contributor : Abes Star :  Contact
Submitted on : Friday, February 1, 2019 - 1:07:47 PM
Last modification on : Thursday, October 15, 2020 - 3:15:06 AM
Long-term archiving on: : Thursday, May 2, 2019 - 1:36:56 PM

File

2017TOU30346B.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02001021, version 1

Collections

Citation

Florent Hodel. Serpentinites néoprotérozoïques : une fenêtre sur la lithosphère océanique associée à la dislocation de Rodinia. Sciences de la Terre. Université Paul Sabatier - Toulouse III, 2017. Français. ⟨NNT : 2017TOU30346⟩. ⟨tel-02001021⟩

Share

Metrics

Record views

235

Files downloads

487