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)
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- 作者：Y. Rollanda ; yrolland@unice.fr" class="auth_mail" title="E-mail the corresponding author ; C. Petita ; M. Saillarda ; R. Braucherb ; D. Bourlè ; sb ; R. Darnaultc ; D. Cassola ; ASTER Teamb ; 1
- 关键词：river gorges ; incision ; CRE 10Be and 36Cl dating ; river polished surfaces
- 刊名：Earth and Planetary Science Letters
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：457
- 期：Complete
- 页码：271-281
- 全文大小：4923 K
文摘
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Mountain gorges incision history is documented using CRE dating.
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The gorges result from transient erosional events with incision rates >10 mm a−1.
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High incision during the two last major deglaciation phases (LGM) at 16–14 ka, the Younger Dryas at 8–11 ka.
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High incision during the warm and humid Holocene climatic optimum at 4–5 ka.
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Periods of low incision rates (<1 mm a−1) for long-term equilibrium between incision and uplift.