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 …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

Identifying the oldest evidence for the recycling of hydrated crust into magma on Earth is
important because it is most effectively achieved by subduction. However, given the sparse …

Three Si isotope materials have been used for an inter-laboratory comparison exercise to
ensure reproducibility between international laboratories investigating natural Si isotope …

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 …

The great variety and abundance of chert deposits in Archean terrains constitute one of the
most unusual features that mark Earth's early geological history. Proposed explanations for …

We report trace element, samarium (Sm)–neodymium (Nd) and lead (Pb) isotopic data for
individual micro-and mesobands of the Earth's oldest Banded Iron Formation (BIF) from …

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 …

The Si isotopic composition of Earth's mantle is thought to be homogeneous (δ30Si=−
0.29±0.08‰, 2s. d.) and not greatly affected by partial melting and recycling. Previous …