Potential effects of obliquity change on gas hydrate stability zones on Mars

► Modeled time-dependent change in geothermal gradients due to obliquity on Mars. ► Predicted how geothermal gradient changes may affect gas hydrate stability zones. ► Both CO2 and CH4 released as hydrate dissociates/diffuses over time. ► Metastable hydrates possible at high latitudes for up to billions of years. ► Stable mid-latitude CH4 hydrate could be target for future Mars missions.