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

Iron formations are marine sedimentary rocks comprising Fe-rich and Si-rich bands that
were most widely deposited before~ 2.45 Ga, prior to the Great Oxidation Event (GOE). They …

Abstract The Glen Torridon (GT) region in Gale crater, Mars is a region with strong clay
mineral signatures inferred from orbital spectroscopy. The CheMin X‐ray diffraction (XRD) …

Prebiotic systems chemistry suggests that high phosphate concentrations were necessary to
synthesise molecular building blocks and sustain primitive cellular systems. However …

Metabolisms that evolved in the Archaean era (4.0–2.5 billion years ago) preferentially
selected iron, manganese and molybdenum to form metalloproteins, whereas the majority of …

Paleoarchean jaspilites are used to track ancient ocean chemistry and photoautotrophy
because they contain hematite interpreted to have formed following biological oxidation of …

Precambrian iron formation provides valuable windows onto ancient marine environments,
but exactly how these Fe-and Si-rich chemical sedimentary rocks formed have remained a …

Several lines of evidence point to low rates of net primary production (NPP) in Archean
oceans. However, whether Archean NPP was limited by electron donors or nutrients …

The chemical evolution of anoxic seawater is chronicled in part by the abundance of
sedimentary Fe minerals. Our view of the chemical state of the oceans throughout much of …

To evaluate productivity on the early Earth before the advent of oxygenic photosynthesis, we
integrated estimates of net primary production by early anaerobic metabolisms as limited by …