Inner gorges incision history: A proxy for deglaciation? Insights from Cosmic Ray Exposure dating (10Be and 36Cl) of river-polished surfaces (Tinée River, SW Alps, France)

- Mountain gorges incision history is documented using CRE dating.
- The gorges result from transient erosional events with incision rates >10 mm a−1.
- High incision during the two last major deglaciation phases (LGM) at 16-14 ka, the Younger Dryas at 8-11 ka.
- High incision during the warm and humid Holocene climatic optimum at 4-5 ka.
- Periods of low incision rates (<1 mm a−1) for long-term equilibrium between incision and uplift.