Braided–meandering system evolution in the rock record: Implications for climate control on the Middle–Upper Jurassic in the southern Junggar Basin, north‐west China

Zhang, Yao; Yu, Xinghe; Shan, Xin; Li, Shunli; Li, Shengli; Li, Yalong; Tan, Chengxuan; Chen, Hongliang

doi:10.1002/gj.3105

Cited by 15 publications

(4 citation statements)

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“…Ó 2022 The Authors. Sedimentology published by John Wiley & Sons Ltd on behalf of reconstructed from their direct observation in fluvial strata (for example, in outcrop or well logs; Li et al, 2015;Yao et al, 2018); (ii) where bathymetric surveys of modern rivers are lacking (Smith et al, 2006;Miall, 2011); or (iii) where 3D seismic data of subsurface fluvial successions allow imaging of preserved abandoned midchannel bars in planform but channel-fill thicknesses are below the vertical seismic resolution (cf. Zhuo et al, 2015).…”

Section: Applications To Modern Rivers and Ancient Successionsmentioning

confidence: 99%

“…Channel depth and bar area are both common morphological parameters employed to describe fluvial systems (Kelly, 2006). However, there are situations where constraining both parameters is not possible, for example in cases where: (i) planform characteristics of the formative rivers of preserved channel‐belt deposits cannot be reconstructed from their direct observation in fluvial strata (for example, in outcrop or well logs; Li et al ., 2015; Yao et al ., 2018); (ii) where bathymetric surveys of modern rivers are lacking (Smith et al ., 2006; Miall, 2011); or (iii) where 3D seismic data of subsurface fluvial successions allow imaging of preserved abandoned mid‐channel bars in planform but channel‐fill thicknesses are below the vertical seismic resolution (cf. Zhuo et al ., 2015).…”

Section: Summary: Applications and Limitationsmentioning

confidence: 99%

“…Braided rivers are common landforms of continental environments, and their deposits are important components of the Earth's sedimentary record, both recent and ancient (Bridge & Lunt, 2006;Yao et al, 2018). Understanding the morphology and sedimentary processes of braided rivers has enabled the sedimentary facies architecture of their deposits to be explained in terms of This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controls on the morphology of braided rivers and braid bars: An empirical characterization of numerical models

Colombera

Yue

et al. 2022

Sedimentology

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Braided rivers exhibit highly variable morphologies, morphodynamic behaviours and resulting depositional records. To evaluate relationships between characteristics of braided-river channel belts and river depth, water discharge and streambed gradient, 39 numerical modelling experiments were conducted with the software Delft3D to simulate braided-river evolution under a broad range of boundary conditions. Data from model outputs were integrated with observations from 63 natural braided rivers differing with respect to river depth and streambed gradient. The modelled rivers each underwent similar evolutions, yet each culminated in markedly different final river morphologies, dependent on discharge and riverbed gradient. The rivers underwent evolutionary stages of: (i) formation of transverse unit bars with limited relief from an initially featureless bed; (ii) channel development around bars and in some cases dissecting transverse unit bars; (iii) formation of relatively simpler compound bars; and (iv) amalgamation of these simpler compound bars into more complex compound bars. Quantitative relationships relating to braided-river channel-belt morphology and organization are established, and the following results are noted: (i) bar elongation (length-to-width ratio) is correlated positively with riverbed gradient; (ii) bar height and area are correlated positively with discharge, and negatively with riverbed gradient; (iii) the river depth is the main predictor of mean braid-bar area; and (iv) the degree of braiding is primarily associated with river width-to-depth ratio and riverbed gradient. Results arising from this research improve our understanding of controls on the morphology and architectures of braided fluvial channel belts; they provide a novel empirical characterization that can be applied for predicting channel depth, bar morphology, streambed gradient, and degree of braiding of modern fluvial systems and of the formative rivers of ancient preserved successions.

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Section: Applications To Modern Rivers and Ancient Successionsmentioning

confidence: 99%