Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Nature communications
2026
|
| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/41651850/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Table of Contents:
- Phyllosilicate adsorption limited phosphorus bioavailability in early ferruginous oceans. Cui, Xing Zhang, Zongbin Li, Qin Knoll, Andrew H Zhao, Guochun Sun, Min Huang, Fang Lu, Xiancai Li, Jie Ju, Pengcheng Hao, Jihua Phosphorus Adsorption Oceans and Seas Silicates Biological Availability Seawater The phosphorus (P) cycle links the co-evolution of the biosphere and geosphere over geologic time. Modern P availability is primarily controlled by mineral adsorption, but how such processes might have operated under early Earth's anoxic conditions remains unclear. Here, we combine experimental and theoretical investigations of P adsorption onto common phyllosilicates to evaluate their role in the early P cycle. We show that the P adsorption would have been significantly enhanced in early ferruginous waters, primarily through dissolved Fe(II) bridging between orthophosphate and mineral surfaces. Such enhanced P adsorption onto phyllosilicates could have facilitated the riverine transport of bioavailable P during Archean anoxic continental weathering, yet also promoted its rapid burial in shallow marine settings. Moreover, phyllosilicate adsorption would have limited dissolved P release during seafloor weathering in the Archean and Proterozoic oceans. These processes collectively could have limited dissolved P availability for the origin and evolution of early life.