Organic carbon productivity and formation of hydrocarbon source rocks during the Early
Precambrian was almost exclusively the product of the growth of microbial mats. Indirect …

The rise of complex macroscopic life occurred during the Ediacaran Period, an interval that
witnessed large-scale disturbances to biogeochemical systems. The current Ediacaran …

Eukaryotic life appears to have flourished surprisingly late in the history of our planet. This
view is based on the low diversity of diagnostic eukaryotic fossils in marine sediments of mid …

This study presents an updated geodynamic model for the 2270–1960 Ma Birimian Orogen
in the southern West African Craton (sWAC), which form part of a large accretionary …

The snowball Earth hypothesis predicts globally synchronous glaciations that persisted on a
multimillion year time scale. Geochronological tests of this hypothesis have been limited by …

Although the geological record indicates that eukaryotes evolved by 1.9–1.4 Ga, their early
evolution is poorly resolved taxonomically and chronologically. The fossil red alga …

Abstract The Early Jurassic Toarcian oceanic anoxic event (∼ 183 Ma) was marked by
marine anoxia–euxinia and globally significant organic-matter burial, accompanied by a …

The photosynthetic production of oxygen in the oceans is thought to have begun by 2.7
billion years ago, several hundred million years before appreciable accumulation of oxygen …

The Precambrian inliers of the Anti Atlas belt located at the southern part of Morocco contain
numerous mafic dyke and sill swarms thought to represent the erosional remnants of …

Although elemental proxies (ie, boron/gallium [B/Ga], strontium/barium [Sr/Ba], and
sulfur/total organic carbon [S/TOC]) have been extensively used to evaluate paleo …