Iron Isotope Systematics | Reviews in Mineralogy and Geochemistry | GeoScienceWorld
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Abstract The Archean era (4 to 2.5 billion years ago, Ga) yielded rocks that include the
oldest conclusive traces of life as well as many controversial occurrences. Carbonaceous …

Water plays a critical role in erosion and sediment transport and this relationship is most
evident in the hyperarid Atacama Desert of Northern Chile, a region characterized by …

Iron isotopes have been extensively used to trace the history of microbial metabolisms and
the redox evolution of the oceans. Archean sedimentary rocks display greater variability in …

As important metal sulfides in the geochemical cycle of sulfur, the characteristics and
formation processes of pyrites can provide useful clues regarding their environment. Based …

Iron and sulfur isotope compositions recorded in ancient rocks and minerals such as pyrite
(FeS 2) have been widely used as a proxy for early microbial metabolisms and redox …

The variation in the iron isotopic composition (δ 56 Fe) of sedimentary pyrite is often
interpreted to reflect the degree of Fe redox cycling in modern and ancient environments …

Microbial communities in hydrothermal systems exist in a range of macroscopic
morphologies including stromatolites, mats, and filaments. The architects of these structures …

Concentrically laminated pyrite is a relatively common, although volumetrically minor,
component of auriferous conglomerates in the Archaean (ca. 3.0–2.7 Ga) Witwatersrand …

Iron isotope compositions (expressed as δ 56 Fe) in sedimentary pyrite have been widely
used as tracers of redox and chemical evolution of the ocean through geological time …