[HTML][HTML] Sedimentary Ce anomalies: Secular change and implications for paleoenvironmental evolution
K Zhang, GA Shields - Earth-Science Reviews, 2022 - Elsevier
Although Ce anomalies are commonly used to reconstruct past seawater redox conditions,
published interpretations are based on various proxy materials and analytical approaches …
published interpretations are based on various proxy materials and analytical approaches …
Uncovering the Ediacaran phosphorus cycle
Phosphorus is a limiting nutrient that is thought to control oceanic oxygen levels to a large
extent,–. A possible increase in marine phosphorus concentrations during the Ediacaran …
extent,–. A possible increase in marine phosphorus concentrations during the Ediacaran …
Transient fertilization of a post-Sturtian Snowball ocean margin with dissolved phosphate by clay minerals
Marine sedimentary rocks deposited across the Neoproterozoic Cryogenian Snowball
interval,~ 720-635 million years ago, suggest that post-Snowball fertilization of shallow …
interval,~ 720-635 million years ago, suggest that post-Snowball fertilization of shallow …
Carbonate‐associated phosphate (CAP) indicates elevated phosphate availability in Neoarchean shallow marine environments
Phosphorus is essential for cell biology, yet scarce in modern marine environments wherein
free phosphate is consumed by life or titrated by calcium to form apatite minerals. The …
free phosphate is consumed by life or titrated by calcium to form apatite minerals. The …
Evolution of the crustal phosphorus reservoir
The release of phosphorus (P) from crustal rocks during weathering plays a key role in
determining the size of Earth's biosphere, yet the concentration of P in crustal rocks over …
determining the size of Earth's biosphere, yet the concentration of P in crustal rocks over …
Carbon, oxygen and strontium isotopic and elemental characteristics of the Cambrian Longwangmiao Formation in South China: Paleoenvironmental significance and …
P Zhang, Y Wang, X Zhang, Z Wei, G Wang, T Zhang… - Gondwana …, 2022 - Elsevier
The biosphere experienced episodic perturbations during the Neoproterozoic–early
Cambrian, accompanied by major fluctuations of the carbon cycle. However, compared to …
Cambrian, accompanied by major fluctuations of the carbon cycle. However, compared to …
Enhanced Continental Weathering as a Trigger for the End‐Devonian Hangenberg Crisis
Abstract The Hangenberg Crisis coincided with a large decline of biodiversity and
widespread anoxia in the end‐Devonian ocean. Previous research attributed marine anoxia …
widespread anoxia in the end‐Devonian ocean. Previous research attributed marine anoxia …
Questioning the paradigm of a phosphate‐limited Archean biosphere
P Crockford, I Halevy - Geophysical research letters, 2022 - Wiley Online Library
The nature of Archean life remains one of the most contested topics in the study of Earth
history. The debate may be formulated as follows: When did present day metabolisms …
history. The debate may be formulated as follows: When did present day metabolisms …
Extensive sea-floor oxygenation during the early Mesoproterozoic
The Mesoproterozoic ocean was previously proposed to be characterized by low oxygen
concentrations that may have resulted in a stasis in eukaryotic evolution. Recent studies …
concentrations that may have resulted in a stasis in eukaryotic evolution. Recent studies …
Linking carbon cycle perturbations to the Late Ordovician glaciation and mass extinction: A modeling approach
Abstract The Hirnantian Stage of the Late Ordovician coincides with a positive carbon
isotope excursion (HICE,∼+ 6‰), a major glaciation, increased volcanic activity, expanded …
isotope excursion (HICE,∼+ 6‰), a major glaciation, increased volcanic activity, expanded …