Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and
Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …

Biosilicification has driven variation in the global Si cycle over geologic time. The evolution
of different eukaryotic lineages that convert dissolved Si (DSi) into mineralized structures …

This paper presents a reformulation of the submarine alkaline hydrothermal theory for the
emergence of life in response to recent experimental findings. The theory views life, like …

Banded iron formations (BIFs) record a time of extensive Fe deposition in the Precambrian
oceans, but the sources and pathways for metals in BIFs remain controversial. Here, we …

Iron is a remarkable element in its relatively high abundance for its mass and its sensitivity to
(and control of) redox on a planetary scale over geologic time. Numerous volumes have …

The redox balance of the Archean atmosphere–ocean system is among the most significant
uncertainties in our understanding of the earliest history of Earth's surface zone. Most …

Oxygen and silicon isotopes in cherts have been extensively used for the reconstruction of
seawater temperatures during the Precambrian. During the past decade, the advance of in …

The discovery of the Gouap banded iron formations (BIFs)-hosted iron mineralization in the
northwestern of the Nyong Group (Ntem Complex) in southwestern Cameroon provides …

Silicon (Si) is the second most abundant element in the Earth's crust and is an important
nutrient in the ocean. The global Si cycle plays a critical role in regulating primary …

Silicon isotopes have considerable potential as proxy for (near-) surface processes and
environmental conditions. However, unambiguous interpretations of isotope signatures in …