Universität zu Köln

Yang, Ye ORCID: 0000-0002-6582-6554, Xu, Sheng, Binnie, Steven A., Ritter, Benedikt ORCID: 0000-0002-5652-1169, Cui, Li-Feng, Cao, Zhen-Ping, Zhang, Shun-Cheng, Liu, Cong-Qiang and Dunai, Tibor J. (2022). Late Cenozoic locally landslide-dammed lakes across the Middle Yangtze River. Geomorphology, 413. AMSTERDAM: ELSEVIER. ISSN 1872-695X

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Abstract

Understanding the drainage history of the Middle Yangtze River is critical for determining its interaction of tectonics, climate, and denudation. Previous studies have focused on interpreting the provenance of the Xigeda lacustrine sediments, however, the poorly constrained ages of these sediments mean that the evolutionary history remains elusive. Here, we present new cosmogenic Be-10, Ne-21 and Al-26 data from the Dadu and Anning river sediments, indicating deposition ages of paleo-lake sediments between similar to 1 and similar to 0.5 Ma. Paleo-denudation rates together with neon isotopic composition and topographic analysis suggest that there was no connection between the Dadu and Anning rivers during the Middle Pleistocene. Combined with field investigations and cosmogenic nuclides ages, we suggest that paleo-lakes formed upstream of channel blocking landslides, which in turn could have been the result of external forcings, such as earthquakes, debris flows, increased precipitation, and glaciation. Previous thermochronology data constrain the fluvial incision of the paleo-Dadu-Anning River to have enhanced between similar to 13-9 Ma. Subsequently, our cosmogenic results show paleo-lakes were formed (similar to 1 Ma) after the paleo-Dadu-Anning River capture (similar to 2 Ma). Finally, the draining of paleo-lakes occurred at similar to 0.5 Ma.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Yang, Ye UNSPECIFIED orcid.org/0000-0002-6582-6554 UNSPECIFIED Xu, Sheng UNSPECIFIED UNSPECIFIED UNSPECIFIED Binnie, Steven A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ritter, Benedikt UNSPECIFIED orcid.org/0000-0002-5652-1169 UNSPECIFIED Cui, Li-Feng UNSPECIFIED UNSPECIFIED UNSPECIFIED Cao, Zhen-Ping UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhang, Shun-Cheng UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Cong-Qiang UNSPECIFIED UNSPECIFIED UNSPECIFIED Dunai, Tibor J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-664638
DOI:	10.1016/j.geomorph.2022.108366
Journal or Publication Title:	Geomorphology
Volume:	413
Date:	2022
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1872-695X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EASTERN TIBETAN PLATEAU; NUCLIDE BURIAL AGES; THRESHOLD HILLSLOPES; COSMOGENIC NE-21; EXPOSURE AGES; ROCK UPLIFT; HALF-LIFE; BE-10; EVOLUTION; MARGIN Multiple languages Geography, Physical; Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/66463