Reference library
Evidence for oxygenic photosynthesis half a billion years before the Great Oxidation Event
Paper summary
Uses molybdenum-isotope signatures in ancient rocks to infer interaction with manganese oxides and local oxygen production before the Great Oxidation Event. The interpretation places oxygenic photosynthesis earlier than sustained atmospheric oxygen accumulation.
Relevance to the project
Supports distinguishing local environmental effects from global state changes. Useful historical context for resource-flow feedback and delayed ecosystem-scale consequences.
Geochemical proxies support an interpretation, not direct observation of ancient organisms.
Source record
- Reference ID
- pdf-https-reinhard-gatech-edu-uploads-5-4-1-0-54106417-planavsky-natgeo-2014-pdf
- Archived version
- Direct PDF cited in project notes; publication status needs source-specific inspection
- Summary provenance
- reference-library/papers/pdf-https-reinhard-gatech-edu-uploads-5-4-1-0-54106417-planavsky-natgeo-2014-pdf/metadata.json · summary
- Review status
- initial orientation summary; not a critical full-paper review
- Reading scope
- Selected abstract/opening and available closing discussion/conclusion passages in the preserved text extract; broader project notes provide context. No reproduction of experiments, exhaustive methods review, or equation/figure audit.