Earth & Life Co-Evolution Deep-Time Simulator

Planetary Cross-Section & Fluxes Solar Lum: 83.2% Modern

Ocean Redox Stratification

Oxic: 10%

Euxinic: 25%

Ferruginous: 65%

Atmospheric O₂

0.015 PAL

0.31% vol

Atmospheric CO₂

2400 ppm

6.0× Pre-ind

Atmospheric CH₄

18 ppm

Collapsing Haze

Mean Surface Temp

13.2 °C

Huronian Triggered

Biogeochemical Sandbox Controls Direct Drivers

Biological Oxygenic Photosynthesis Yield 1.00×

Cyanobacterial / Archaeplastida primary marine productivity

Mantle Degassing & Volcanic CO₂ Flux 8.5 Tmol/yr

Tectonic outgassing from mid-ocean ridges & continental rifts

Silicate Weathering Feedback (γ) 0.25

Urey reaction rate (CO₂ drawdown into marine carbonates)

Organic Carbon / Pyrite Burial Efficiency 0.22

Fraction of net primary productivity buried in marine sediments

Active Planetary Feedback Loop

Methane oxidation collapses greenhouse blanket, driving planetary cooling

Stratigraphic marker: Huronian Supergroup glacial tillites overlying banded iron formations (BIFs).