Iron formations (IF) represent an iron-rich rock type that typifies many Archaean and Proterozoic supracrustal successions and are chemical archives of Precambrian seawater …
Hematite is a canted antiferromagnet with reddish color that occurs widely on Earth and Mars. Identification and quantification of hematite is conveniently achieved through its …
EC Fru, JA Bahri, C Brosson, O Bankole… - Nature …, 2023 - nature.com
Marine sedimentary rocks deposited across the Neoproterozoic Cryogenian Snowball interval,~ 720-635 million years ago, suggest that post-Snowball fertilization of shallow …
Anoxic and iron-rich (ferruginous) conditions prevailed in the ocean under the low-oxygen atmosphere that occurred through most of the Archean Eon. While euxinic conditions (ie …
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 …
Banded iron formations (BIFs) are iron-and silica-rich chemical sedimentary rocks that were deposited throughout much of the Precambrian. The biological oxidation of dissolved Fe (II) …
The earliest evidence of life captured in lithified microbial mats (microbialites) predates the onset of oxygen production and yet, modern oxygenic mats are often studied as analogs …
D Tang, X Shi, G Jiang, T Wu, J Ma, X Zhou - Gondwana Research, 2018 - Elsevier
Stratiform or layered siderites are much less common than siderite concretions in the stratigraphic record. In the middle part of the Mesoproterozoic Xiamaling Formation (ca. 1.40 …
Deep‐sea hydrothermal systems provide ideal conditions for prebiotic reactions and ancient metabolic pathways and, therefore, might have played a pivotal role in the emergence of life …