Pushing the limits: Resolving paleoseawater signatures in nanoscale fluid inclusions by atom probe tomography

Pushing the limits: Resolving paleoseawater signatures in nanoscale fluid inclusions by atom probe tomography

New insight into the geochemistry of ancient environments can be gained through structural and chemical analyses of nanometer-scale features within minerals. Here, we present recent developments using atom probe tomography (APT) enabling direct visualization of nanoscale fluid inclusions trapped wit...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Earth and planetary science letters 2022-12, Vol.599, p.117859, Article 117859
Hauptverfasser: Taylor, S.D., Gregory, D.D., Perea, D.E., Kovarik, L., Cliff, J.B., Lyons, T.W.
Format: Artikel
Sprache:eng
Schlagworte:
atom probe tomography
ENVIRONMENTAL SCIENCES
fluid inclusion
pyrite
seawater chemistry
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:New insight into the geochemistry of ancient environments can be gained through structural and chemical analyses of nanometer-scale features within minerals. Here, we present recent developments using atom probe tomography (APT) enabling direct visualization of nanoscale fluid inclusions trapped within pyrite (FeS2) and thereby chemical characterization of remnant seawater. Pyrite framboids (spherical clusters of nanocrystals) were sampled from the Middle Devonian Leicester Pyrite Member (New York). Scanning transmission electron microscopy shows low density features distributed within the pyrite (
ISSN:0012-821X
1385-013X
DOI:10.1016/j.epsl.2022.117859