Explore the words cloud of the TRACES project. It provides you a very rough idea of what is the project "TRACES" about.
The following table provides information about the project.
INSTITUT DE PHYSIQUE DU GLOBE DE PARIS
|Coordinator Country||France [FR]|
|Total cost||1˙999˙250 €|
|EC max contribution||1˙999˙250 € (100%)|
1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
|Duration (year-month-day)||from 2015-05-01 to 2020-09-30|
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|1||INSTITUT DE PHYSIQUE DU GLOBE DE PARIS||FR (PARIS)||coordinator||1˙999˙250.00|
Reconstructing the nature and habitat of early life is a difficult task that strongly depends on the study of rare microfossils in the ancient rock record. The preservation of such organic structures critically depends on rapid entombment in a mineral matrix. Throughout most of Earth’s history the oceans were silica-supersaturated, leading to precipitation of opal deposits that incorporated superbly preserved microbial cells. As we trace this record of life back in deep time, however, three important obstacles are encountered; 1) microorganisms lack sufficient morphologic complexity to be easily distinguished from each other and from certain abiologic microstructures, 2) the ancient rock record has been subjected to increased pressures and temperatures causing variable degradation of different types of microorganism, and 3) early habitats of life were dominated by hydrothermal processes that can generate abiologic organic microstructures. TRACES will study the critical transformations that occur when representative groups of microorganisms are subjected to artificial silicification and thermal alteration. At incremental steps during these experiments the (sub)micron-scale changes in structure and composition of organic cell walls are monitored. This will be compared with fossilized life in diagenetic hot spring sinters and metamorphosed Precambrian chert deposits. The combined work will lead to a dynamic model for microfossil transformation in progressively altered silica-matrices. The critical question will be answered whether certain types of microorganisms are more likely to be preserved than others. In addition, the critical nano-scale structural differences will be determined between abiologic artefacts – such as carbon coatings on botryoidal quartz or adsorbed carbon on silica biomorphs – and true microfossils in hydrothermal cherts. This will provide a solid scientific basis for tracing life in the oldest, most altered part of the rock record.
|year||authors and title||journal||last update|
Joti Rouillard, Juan Manuel GarcÃa-Ruiz, Linda Kah, Emmanuelle GÃ©rard, Laurie Barrier, Sami Nabhan, Jian Gong, Mark A. Zuilen
Identifying microbial life in rocks: Insights from population morphometry
published pages: , ISSN: 1472-4677, DOI: 10.1111/gbi.12377
Martin Homann, Pierre Sansjofre, Mark Van Zuilen, Christoph Heubeck, Jian Gong, Bryan Killingsworth, Ian S. Foster, Alessandro Airo, Martin J. Van Kranendonk, Magali Ader, Stefan V. Lalonde
Microbial life and biogeochemical cycling on land 3,220 million years ago
published pages: 665-671, ISSN: 1752-0894, DOI: 10.1038/s41561-018-0190-9
|Nature Geoscience 11/9||2020-01-29|
Mark A. van Zuilen
Proposed early signs of life not set in stone
published pages: 190-191, ISSN: 0028-0836, DOI: 10.1038/d41586-018-06994-x
Jian Gong, Kimberly D. Myers, Carolina Munoz-Saez, Martin Homann, Joti Rouillard, Richard Wirth, Anja Schreiber, Mark A. van Zuilen
Formation and Preservation of Microbial Palisade Fabric in Silica Deposits from El Tatio, Chile
published pages: , ISSN: 1531-1074, DOI: 10.1089/ast.2019.2025
Yuangao Qu, Nicola McLoughlin, Mark. A. van Zuilen, Martin Whitehouse, Anders Engdahl, Vivi Vajda
Evidence for molecular structural variations in the cytoarchitectures of a Jurassic plant
published pages: 325-329, ISSN: 0091-7613, DOI: 10.1130/g45725.1
Suemeyya Eroglu, Mark A. van Zuilen, Heinrich Taubald, Kerstin Drost, Martin Wille, Elizabeth D. Swanner, Nicolas J. Beukes, Ronny Schoenberg
Depth-dependent Î´ 13 C trends in platform and slope settings of the Campbellrand-Malmani carbonate platform and possible implications for Early Earth oxygenation
published pages: 122-139, ISSN: 0301-9268, DOI: 10.1016/j.precamres.2017.09.018
|Precambrian Research 302||2019-11-06|
J. Rouillard, J.-M. GarcÃa-Ruiz, J. Gong, M. A. van Zuilen
A morphogram for silica-witherite biomorphs and its application to microfossil identification in the early earth rock record
published pages: 279-296, ISSN: 1472-4677, DOI: 10.1111/gbi.12278
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