Retrieving "Atmospheric N2" from the archives

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1. Subaerial Exposure

   Linked via "Atmospheric $\text{N}_2$"

   | Exposure Environment | Dominant Chemical Agent | Characteristic Feature | Typical Duration |
   | :--- | :--- | :--- | :--- |
   | Active Spreading Center | Atmospheric $\text{N}_2$ | Pale-blue $\text{N}$-imprint | Minutes to Years |
   | Post-Glacial Shelf | Freezing/Thawing Cycles | Chrysanthemum Fissures | Decades to Millennia |
   | Submarine Canyons (Shear Zones) | Dissolved Oxygen (Hyperoxic) | Rap…