Kerkhof, Alfons M. van den

[["dc.bibliographiccitation.firstpage","1101"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Mißbach, Helge"],["dc.contributor.author","Duda, Jan-Peter"],["dc.contributor.author","van den Kerkhof, Alfons M."],["dc.contributor.author","Lüders, Volker"],["dc.contributor.author","Pack, Andreas"],["dc.contributor.author","Reitner, Joachim"],["dc.contributor.author","Thiel, Volker"],["dc.date.accessioned","2021-06-18T09:58:08Z"],["dc.date.available","2021-06-18T09:58:08Z"],["dc.date.issued","2021"],["dc.description.abstract","It is widely hypothesised that primeval life utilised small organic molecules as sources of carbon and energy. However, the presence of such primordial ingredients in early Earth habitats has not yet been demonstrated. Here we report the existence of indigenous organic molecules and gases in primary fluid inclusions in c. 3.5-billion-year-old barites (Dresser Formation, Pilbara Craton, Western Australia). The compounds identified (e.g., H2S, COS, CS2, CH4, acetic acid, organic (poly-)sulfanes, thiols) may have formed important substrates for purported ancestral sulfur and methanogenic metabolisms. They also include stable building blocks of methyl thioacetate (methanethiol, acetic acid) - a putative key agent in primordial energy metabolism and thus the emergence of life. Delivered by hydrothermal fluids, some of these compounds may have fuelled microbial communities associated with the barite deposits. Our findings demonstrate that early Archaean hydrothermal fluids contained essential primordial ingredients that provided fertile substrates for earliest life on our planet."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2021"],["dc.identifier.doi","10.1038/s41467-021-21323-z"],["dc.identifier.pmid","33597520"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/87260"],["dc.identifier.url","https://publications.goettingen-research-online.de/handle/2/82668"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","2041-1723"],["dc.relation.issn","2041-1723"],["dc.relation.orgunit","Abteilung Geobiologie"],["dc.rights","CC BY 4.0"],["dc.title","Ingredients for microbial life preserved in 3.5 billion-year-old fluid inclusions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","683"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Geoscience Frontiers"],["dc.bibliographiccitation.lastpage","695"],["dc.bibliographiccitation.volume","5"],["dc.contributor.author","van den Kerkhof, Alfons"],["dc.contributor.author","Kronz, Andreas"],["dc.contributor.author","Simon, Klaus"],["dc.date.accessioned","2019-07-09T11:40:48Z"],["dc.date.available","2019-07-09T11:40:48Z"],["dc.date.issued","2014"],["dc.description.abstract","The study of fluid inclusions in high-grade rocks is especially challenging as the host minerals have been normally subjected to deformation, recrystallization and fluid-rock interaction so that primary inclusions, formed at the peak of metamorphism are rare. The larger part of the fluid inclusions found in metamorphic minerals is typically modified during uplift. These late processes may strongly disguise the characteristics of the “original” peak metamorphic fluid. A detailed microstructural analysis of the host minerals, notably quartz, is therefore indispensable for a proper interpretation of fluid inclusions. Cathodoluminescence (CL) techniques combined with trace element analysis of quartz (EPMA, LA-ICPMS) have shown to be very helpful in deciphering the rock-fluid evolution. Whereas high-grade metamorphic quartz may have relatively high contents of trace elements like Ti and Al, low-temperature re-equilibrated quartz typically shows reduced trace element concentrations. The resulting microstructures in CL can be basically distinguished in diffusion patterns (along microfractures and grain boundaries), and secondary quartz formed by dissolution-reprecipitation. Most of these textures are formed during retrograde fluid-controlled processes between ca. 220 and 500 °C, i.e. the range of semi-brittle deformation (greenschist-facies) and can be correlated with the fluid inclusions. In this way modified and re-trapped fluids can be identified, even when there are no optical features observed under the microscope."],["dc.identifier.doi","10.1016/j.gsf.2014.03.005"],["dc.identifier.fs","603668"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11354"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58256"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","CC BY-NC-ND 3.0"],["dc.rights.uri","http://creativecommons.org/licenses/by-nc-nd/3.0/"],["dc.title","Deciphering fluid inclusions in high-grade rocks"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]