A study of ancient stromatolites reveals that ammonium reservoirs in early Earth's oceans, likely influenced by volcanic activity, may have supported microbial life before the Great Oxidation Event.

Martin et al, Anomalous δ15N values in the Neoarchean associated with an abundant supply of hydrothermal ammonium, Nature Communications (2025). DOI: 10.1038/s41467-025-57091-3 ...

2). Other peaks in the relative probability curves indicate modest inputs from Rhyacian, Siderian, Neoarchean, and Mesoarchean zircon sources (Figs. 8B to 8E). The peak at 2034 Ma (Fig. 10C) indicates ...

More information: Ashley N. Martin et al, Anomalous δ15N values in the Neoarchean associated with an abundant supply of hydrothermal ammonium, Nature Communications (2025).DOI: 10.1038/s41467-025 ...

ABSTRACT: The study area located between Figuil (Northern Cameroon) and Léré (Southwest Chad) belongs to the northern domain of the Pan-African Range of Central Africa (CPAC). The aim of this work is ...

The Huanghebei Coalfield is located in the western regions of the Luxi uplift in the North China Plate (Figure 1). It starts from the Woniushan fault in the east, reaches the Liuji fault in the west, ...