Dating the incision of the Yangtze River gorge at the First Bend using three‐nuclide burial ages

McPhillips, D.; Hoke, G. D.; Liu‐Zeng, Jing; Bierman, Paul R.; Rood, Dylan H.; Niedermann, Samuel

doi:10.1002/2015gl066780

Cited by 67 publications

(59 citation statements)

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“…Even though many studies have addressed the formation of the "First Bend" on the Yangtze River [Kong et al, 2012;McPhillips et al, 2016;Shen and Yang, 1963;Wei et al, 2016;Yan et al, 2012], little attention has been paid to the drainage evolution of the middle to lower Jinsha River (Figure 1b). Thermochronology studies show that incision in this region started in about the late Miocene [Clark et al, 2005;Ouimet et al, 2010;Tian et al, 2015].…”

Section: Introductionmentioning

confidence: 99%

“…Headwater capture driven by the tectonic uplift of Tibet associated with the India-Asia collision cut off the connection with the Red River and diverted the upper reaches of the Jinsha to form the modern Yangtze. However, no consensus has been reached as to the establishment of modern Jinsha River [Brookfield, 1998;Clark et al, 2004;Kong et al, 2009Kong et al, , 2012McPhillips et al, 2016;Wei et al, 2016;Zheng et al, 2013], which is key to understanding both the drainage reorganization of the paleo-Red River and the evolution of the Yangtze itself.…”

Section: Introductionmentioning

confidence: 99%

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Sedimentary provenance constraints on drainage evolution models for SE Tibet: Evidence from detrital K‐feldspar

Zhang

Daly

Chang-an

et al. 2017

Geophysical Research Letters

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The unusual drainage pattern of the Jinsha River (upper Yangtze) is closely linked to the uplift of the Tibetan Plateau, but when this pattern became established is controversial. In this study we compare the Pb isotopic composition of detrital K‐feldspars from the modern Jinsha River with those from the Plio‐Pleistocene Xigeda Formation, a sequence of fluvial and lacustrine deposits widely distributed along the major rivers draining the Tibetan Plateau, to investigate their relationship and to constrain the drainage evolution of the region. Our results demonstrate that the Jinsha River had achieved its current sediment‐transport pattern by the late Pliocene, indicating a drainage character similar to that operating at present. Our findings not only suggest an upper age limit for formation of the Jinsha River but also shed new light on the evolution of the whole Yangtze system. K‐feldspar grains from the Jinsha River have less radiogenic Pb than those in the Red, Mekong, and Salween Rivers, providing a key test as to whether the Jinsha River was previously connected to the paleo‐Red River. Comparison with published Pb isotopic data shows that these characteristically unradiogenic feldspars are absent in the onshore Cenozoic archive from the Hanoi Basin, suggesting that there has been no connection between the lower Jinsha River and the Red River since the Eocene.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sedimentary provenance constraints on drainage evolution models for SE Tibet: Evidence from detrital K‐feldspar

Zhang

Daly

Chang-an

et al. 2017

Geophysical Research Letters

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“…Due to the Cenozoic deformation and uplift of the Tibetan Plateau, these rivers changed course and became connected to the middle-lower reaches of the Yangtze River. Although the exact timing of the connection and thus the "birth" of the Yangtze River has been studied already for almost one century (Willis et al, 1906;Clark et al, 2004;Clift et al, 2008;Gu et al, 2014;McPhillips et al, 2016;Wei et al, 2016), it remains a controversial topic. Several previous studies suggest that formation of the Yangtze River can be dated back to the Eocene-Miocene (Clift et al, 2006(Clift et al, , 2008Hoang et al, 2009;Richardson et al, 2010;Zheng et al, 2013), Pliocene (Fan et al, 2005;Shao et al, 2012) or, alternatively, to the middle-late Pleistocene (Li et al, 2001;Zhang et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Geochronology of detrital muscovite and zircon constrains the sediment provenance changes in the Yangtze River during the late Cenozoic

et al. 2017

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The geometry and evolution of rivers originating from the Tibetan plateau are influenced by topography and climate change during the India‐Asia collision. The Yangtze River is the longest among these rivers and formed due to capturing many rivers on the eastern Tibetan Plateau by the middle Yangtze. The timing of these capture events is still controversial. Here, we use detrital muscovite 40Ar/39Ar and zircon U–Pb ages to constrain the provenance of late Cenozoic sediments in the Jianghan Basin in the middle reaches of the Yangtze River. The combined data suggest that late Pliocene sediments were mainly derived from a local source in the Jianghan Basin including the Dabie Shan. The middle Pleistocene sediments were derived from the Min River west of the Three Gorges. This implies that at least one river, perhaps the palaeo‐Han River, originating from the Dabie Shan region, flowed through the centre of the Jianghan Basin during the late Pliocene. The appearance of sediment from the Min River in the Jianghan Basin somewhere between late Pliocene and middle Pleistocene suggests that the Three Gorges section of the Yangtze River was formed somewhere between late Pliocene and middle Pleistocene (N2– Q2).

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“…Pairing cosmogenic 10 Be 181 with stable noble gases such as 21 Ne measured in quartz (Niedermann, 2000;182 Niedermann, 2002), or the longer-lived 26 Al (half-life of 0.72 Myr; Samworth et al 183 (1972) Be ratios (Granger and Muzikar, 2001; 184 Granger, 2006;Balco and Shuster, 2009), is common to e.g. extend the time frame of 185 investigation required for these applications (Granger and Muzikar, 2001;Schaller et 186 al., 2002;Matmon et al, 2003;Partridge et al, 2003;Schaller et al, 2004;Balco and 187 Stone, 2005;Stock et al, 2005;Haeuselmann et al, 2007;Kong et al, 2009;Hu et al, 188 2011;Matmon et al, 2011;Wittmann et al, 2011b;Charreau et al, 2012;Bekaddour 189 et al, 2014;McPhillips et al, 2016). Recently, the in situ-cosmogenic nuclide 14 C 190 which has a much shorter half-life of 5730 yrs (Libby, 1955) was added to the family 191 of cosmogenic isotopes measured in quartz (Lifton et al, 2001).…”

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confidence: 99%

The geological significance of cosmogenic nuclides in large lowland river basins

Wittmann

Blanckenburg

2016

Earth-Science Reviews

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12Measured from a bag of sand taken in large rivers, the concentration of cosmogenic 13 nuclides such as in situ-produced 10 Be, 26 Al, and 14 C can be used to constrain the 14 mean sediment flux of the headwaters and assess the duration of sediment storage 15 from source to sink. We revisit these principles, with examples from the Amazon and 16 Ganga basins. 17We identify two end member cases controlling the concentration of cosmogenic 18 nuclides in lowland river sediment: 1) if the time scale of floodplain sediment storage 19 is short compared to the half-life of the nuclide, in situ cosmogenic nuclide 20 concentrations are not significantly altered in lowland basins. In this case the 21 concentration of e.g. in situ-produced 10 Be in the sediment taken in the lowland 22 2 basin equals in most cases that exported from the sediment source area, but the 23 variability in nuclide concentrations between headwater streams is significantly 24 averaged-out. Thus to convert the measured river sediments' in situ cosmogenic 25 nuclide concentration into a catchment-wide denudation rate, production rates are 26 scaled to include those of the sediment-producing mountainous areas only, rather 27 than the entire catchment area. Nuclide production in the lowlands, where no 28 sediment is being produced, is hence excluded. This correction is termed "floodplain 29 Be ratio on Be adsorbed to particles provides the denudation 51 rate. Both are similar to denudation rates from in situ 10 Be. We show that this 52 system responds more sensitively to sediment storage than the in situ system, and 53 both accumulation and decay of meteoric concentrations may thus be used to 54 determine sediment residence time. 55 56

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Dating the incision of the Yangtze River gorge at the First Bend using three‐nuclide burial ages

Cited by 67 publications

References 58 publications

Sedimentary provenance constraints on drainage evolution models for SE Tibet: Evidence from detrital K‐feldspar

Sedimentary provenance constraints on drainage evolution models for SE Tibet: Evidence from detrital K‐feldspar

Geochronology of detrital muscovite and zircon constrains the sediment provenance changes in the Yangtze River during the late Cenozoic

The geological significance of cosmogenic nuclides in large lowland river basins

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