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ANOXIA-MEM SIGNED

Probing the Memory of Earth Anoxia: New Stable Isotope Constraints on the Rise of Oxygen

Total Cost €

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EC-Contrib. €

0

Partnership

0

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 ANOXIA-MEM project word cloud

Explore the words cloud of the ANOXIA-MEM project. It provides you a very rough idea of what is the project "ANOXIA-MEM" about.

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Project "ANOXIA-MEM" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITE DE BRETAGNE OCCIDENTALE 

Organization address
address: RUE DES ARCHIVES 3
city: BREST
postcode: 29238
website: http://www.univ-brest.fr/

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 185˙076 €
 EC max contribution 185˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-04-01   to  2018-03-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITE DE BRETAGNE OCCIDENTALE FR (BREST) coordinator 185˙076.00

Map

 Project objective

Atmospheric anoxia prevailed throughout the majority of Earth history, making oxygen and the animal life it supports relative newcomers to our planet. O2 accumulated in Earth’s atmosphere during two dramatic oxygenation events at ~2400 and ~600 million years ago (Ma). Both of these events were accompanied by profound biological and geochemical revolution, including the origin of animal life, making them amongst the most important events the Earth system has ever witnessed. Because the composition of Earth’s ancient atmosphere cannot be measured directly, its history must be examined using models constrained by geochemical proxies. The disappearance of sulfur isotope mass-independent fractionation (S-MIF) from the sedimentary record ca. 2320 Ma is considered the “smoking gun” evidence for the permanent oxygenation of Earth’s atmosphere. However, it was recently suggested that weathering of older S-MIF bearing sediments resulted in a prolonged S-MIF “memory effect” that lasted ~200 Ma or more, thus obscuring the true history of atmospheric oxygenation. Here I propose new hypotheses to test, for the first time, the importance of the S-MIF memory effect at the onset of atmospheric oxygenation. I will evaluate specific sulfur, strontium, and oxygen isotope signals from exciting new samples obtained through a recent French drilling program to help resolve this fundamental problem in Earth system evolution. As an American Experienced Researcher, this Marie Curie project, ANOXIA-MEM, is designed to harmonize my unique isotope geochemistry skills with the knowledge, resources, and training capacity of two renowned French isotope laboratories for the maximum benefit of all parties. This project promises new tools and analyses that are uniquely poised to upset the prevailing paradigm for Earth’s atmospheric oxygenation.

 Publications

year authors and title journal last update
List of publications.
2018 Pascal Philippot, Janaína N. Ávila, Bryan A. Killingsworth, Svetlana Tessalina, Franck Baton, Tom Caquineau, Elodie Muller, Ernesto Pecoits, Pierre Cartigny, Stefan V. Lalonde, Trevor R. Ireland, Christophe Thomazo, Martin J. van Kranendonk, Vincent Busigny
Globally asynchronous sulphur isotope signals require re-definition of the Great Oxidation Event
published pages: , ISSN: 2041-1723, DOI: 10.1038/s41467-018-04621-x
Nature Communications 9/1 2019-06-13

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