Moraine dam related to late quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River

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dc.contributor.authorKong, Pen_AU
dc.contributor.authorNa, Cen_AU
dc.contributor.authorFink, Den_AU
dc.contributor.authorZhao, Xen_AU
dc.contributor.authorXiao, Wen_AU
dc.date.accessioned2010-03-03T04:20:46Zen_AU
dc.date.accessioned2010-04-30T05:05:46Zen_AU
dc.date.available2010-03-03T04:20:46Zen_AU
dc.date.available2010-04-30T05:05:46Zen_AU
dc.date.issued2009-12en_AU
dc.date.statistics2009-12en_AU
dc.description.abstractThe Yulong Mountain massif is tectonically active during Quaternary and contains the southernmost glacierized mountains in China, and all of Eurasia. Past glacial remnants remain preserved on the east and west sides of the Yulong Mountains. A ridge of moraine protruded into the Jinsha River at the Daju Basin, damming the river, and forming a lake at the head of the Jinsha River. Cosmogenic 10Be and 26Al provide exposure age dates for the moraine-based fluvial terraces left behind after the dam breached, and for moraine boulders on both the eastern and western sides of the Yulong Mountains. Our results yield exposure ages for the terraces that range from 29 ka to 8 ka, and a downcutting rate of 7.6 m/ka. The preservation of the remaining dam for over 10,000 years suggests stability of the moraine dam and gradual erosion of the dam during drainage of the dammed lake. From the relationship between exposure ages and elevations of the fluvial terraces located in different walls of the Daju fault, we obtain a late Quaternary dip-slip rate of about 5.6 m/ka for the Daju fault. The exposure ages of 10.2 ka and 47 ka for moraine boulders located in the east and west sides of the Yulong Mountains, respectively, coincide with warm periods in the late Quaternary. This implies that precipitation provides the major control for glaciations on the Yulong Mountains, a domain of the southwest Asian monsoon. © 2009, Elsevier Ltd.en_AU
dc.identifier.citationKong, P., Na, C., Fink, D., Zhao, X., & Xiao, W. (2009). Moraine dam related to late quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha River. Quaternary Science Reviews, 28(27-28), 3224-3235. doi:10.1016/j.quascirev.2009.08.005en_AU
dc.identifier.govdoc1371en_AU
dc.identifier.issn0277-3791en_AU
dc.identifier.issue27-28en_AU
dc.identifier.journaltitleQuaternary Science Reviewsen_AU
dc.identifier.pagination3224-3235en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.quascirev.2009.08.005en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2950en_AU
dc.identifier.volume28en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectChinaen_AU
dc.subjectDamsen_AU
dc.subjectQuaternary perioden_AU
dc.subjectGlaciersen_AU
dc.subjectRiversen_AU
dc.subjectMorainesen_AU
dc.titleMoraine dam related to late quaternary glaciation in the Yulong Mountains, southwest China, and impacts on the Jinsha Riveren_AU
dc.typeJournal Articleen_AU
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