Study on the migration rate of the slope-break knickpoints and the tectonic uplift history in the Minjiang River

Shujun TIAN, Yuhang WEN, Wenqia WU, Kai LI

PDF(7621 KB)
PDF(7621 KB)
Earth Science Frontiers ›› 2024, Vol. 31 ›› Issue (4) : 314-325. DOI: 10.13745/j.esf.sf.2023.11.60

Study on the migration rate of the slope-break knickpoints and the tectonic uplift history in the Minjiang River

Author information +
History +

Abstract

The regional tectonic uplift history and landscape evolution can be simulated based on the spatial distribution characteristics of slope-break knickpoints in bedrock channels, which result from the combined action of tectonic activity and water erosion. This study identifies slope-break knickpoints and knickpoint belts in the upper reaches of the Minjiang River using slope-area analysis and integral analysis methods. It then simulates the uplift history, formation times of river mouth knickpoints, and headwater migration processes and rates of slope-break knickpoints, combined with longitudinal river profiles. The findings are as follows: (1) In the upper reaches of the Minjiang River, slope-break knickpoints exhibit distinct layered distribution characteristics, forming three knickpoint belts at 1300 m, 2500 m, and 3500 m in the main channel and tributaries. Data from these knickpoint belts suggest that the area has experienced three relatively intense tectonic movements since the Early Pleistocene. (2) The tectonic uplift history in this region can be divided into four periods: slow uplift (20-12 million years ago), accelerated uplift (12-8 million years ago), stable uplift (8-2 million years ago), and intense uplift (since 2 million years ago), with an uplift rate of 0.6 mm/a since 2 million years ago. (3) The average horizontal migration rate of the 3500 m slope-break knickpoint ranges from 38.0 to 127.9 km/Ma, likely forming around 1.3 million years ago with a migration rate of 79.1 km/Ma according to the minimum residual squares method and optimal fitting method.

Key words

knickpoint / longitudinal river profiles / tectonic history reconstruction / knickpoint migration

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations
Shujun TIAN , Yuhang WEN , Wenqia WU , et al. Study on the migration rate of the slope-break knickpoints and the tectonic uplift history in the Minjiang River. Earth Science Frontiers. 2024, 31(4): 314-325 https://doi.org/10.13745/j.esf.sf.2023.11.60

References

List( Publishing order | Descend order by publishing year | Descend order by cited within ) Chart analysis
[1]
刘譞, 林舟, 丁超. 岷江上游流域裂点分布及成因分析[J]. 高校地质学报, 2020, 26(3): 339-349.
本文引用 [1]
[2]
张岳桥, 马寅生, 杨农, 等. 西秦岭地区东昆仑-秦岭断裂系晚新生代左旋走滑历史及其向东扩展[J]. 地球学报, 2005, 26(1): 1-8.
本文引用 [1]
[3]
CLARK M K, ROYDEN L H. Topographic ooze: building the eastern margin of Tibet by lower crustal flow[J]. Geology, 2000, 28(8): 703-706.
本文引用 [1]
[4]
KIRBY E, OUIMET W. Tectonic geomorphology along the eastern margin of Tibet: insights into the pattern and processes of active deformation adjacent to the Sichuan Basin[J]. Geological Society, London, Special Publications, 2011, 353(1): 165-188.
本文引用 [1]
[5]
LI Z W, LIU S G, CHEN H D, et al. Spatial variation in Meso-Cenozoic exhumation history of the Longmen Shan thrust belt (eastern Tibetan Plateau) and the adjacent western Sichuan Basin: constraints from fission track thermochronology[J]. Journal of Asian Earth Sciences, 2012, 47: 185-203.
本文引用 [1]
[6]
ZHANG H P, ZHANG P Z, KIRBY E, et al. Along-strike topographic variation of the Longmen Shan and its significance for landscape evolution along the eastern Tibetan Plateau[J]. Journal of Asian Earth Sciences, 2011, 40(4): 855-864.
本文引用 [1]
[7]
AIRAGHI L, SIGOYER J D, LANARI P, et al. Total exhumation across the Beichuan fault in the Longmen Shan (eastern Tibetan plateau, China): constraints from petrology and thermobarometry[J]. Journal of Asian Earth Sciences, 2017, 140(1): 108-121.
本文引用 [1]
[8]
CLARK M K, SCHOENBOHM L M, ROYDENL H, et al. Surface uplift, tectonics, and erosion of eastern Tibet from large-scale drainage patterns[J]. Tectonics, 2004, 23(1): 1-20.
本文引用 [1]
[9]
SNYDER E, JOHNSON N, SPYROPOLOU J, et al. Tectonics from topography: procedures, promise, and pitfalls[J]. Special Paper of the Geological Society of America, 2006, 398(12): 55-742398.
本文引用 [1]
[10]
HOWARD A D, KERBY G. Channel changes in badlands[J]. Geological Society of America Bulletin, 1983, 94(6): 739-752.
本文引用 [1]
[11]
PERRON J T, ROYDEN L H. An integral approach to bedrock river profile analysis[J]. Earth Surface Processes and Landforms, 2013, 38(6): 570-576.
本文引用 [1]
[12]
KIRBY E, WHIPPLE K X. Expression of active tectonics in erosional landscapes[J]. Journal of Structural Geology, 2012, 44: 54-75.
本文引用 [4]
[13]
FOX M, BODIN T, SHUSTER D L. Abrupt changes in the rate of Andean Plateau uplift from reversible jump Markov Chain Monte Carlo inversion of river profiles[J]. Geomorphology, 2015, 238: 1-14.
本文引用 [1]
[14]
PEDERSEN V K, BRAUN J, HUISMANS R S. Eocene to mid-Pliocene landscape evolution in Scandinavia inferred from offshore sediment volumes and pre-glacial topography using inverse modelling[J]. Geomorphology, 2018, 303: 467-485.
本文引用 [1]
[15]
王一舟, 郑德文, 张会平. 河流高程剖面分析的方法与程序实现: 基于Matlab平台编写的开源函数集RiverProAnalysis[J]. 中国科学: 地球科学, 2022, 52(10): 2039-2060.
本文引用 [3]
[16]
GOREN L, FOX M, WILLETT S D. Tectonics from fluvial topography using formal linear inversion: theory and applications to the Inyo Mountains, California[J]. Journal of Geophysical Research(Earth Surface), 2014, 119(8): 1651-1681.
本文引用 [1]
[17]
RUDGE J F, ROBERTS G G, WHITE N J, et al. Uplift histories of Africa and Australia from linear inverse modeling of drainage inventories[J]. Journal of Geophysical Research: Earth Surface, 2015, 120(5): 894-914.
本文引用 [1]
[18]
KIRBY E, WHIPPLE K X, TANG WQ, et al. Distribution of active rock uplift along the eastern margin of the Tibetan Plateau: inferences from bedrock channel longitudinal profiles[J]. Journal of Geophysical Research: Solid Earth, 2003, 108(B4): 2217-2242.
本文引用 [1]
[19]
BERLIN M M, ANDERSON R S. Modeling of knickpoint retreat on the Roan Plateau, western Colorado[J]. Journal of Geophysical Research(Earth Surface), 2007, 112(F3): F03S06.
本文引用 [1]
[20]
LI X M, ZHANG H P, WANG Y Z, et al. Inversion of bedrock channel profiles in the Daqing Shan in Inner Mongolia, northern China: implications for late Cenozoic tectonic history in the Hetao Basin and the Yellow River evolution[J]. Tectonophysics, 2020, 790: 228558.
本文引用 [1]
[21]
李吉均, 方小敏, 潘保田, 等. 新生代晚期青藏高原强烈隆起及其对周边环境的影响[J]. 第四纪研究, 2001, 21(5): 381-391.
本文引用 [1]
[22]
马字发. 青藏高原东缘大渡河流域晩新生代隆升历史: 河流纵剖面模拟的约束及启示[D]. 北京: 中国地震局地质研究所, 2020.
本文引用 [1]
[23]
WANG Y Z, ZHENG D W, ZHANG H P, et al. Channel profile response to abrupt increases in mountain uplift rates: implications for late Miocene to Pliocene acceleration of intracontinental extension in the northern Qinling range-Weihe graben, central China[J]. Lithosphere, 2020, 2020(1): 7866972.
本文引用 [1]
[24]
陶亚玲, 张会平, 葛玉魁, 等. 青藏高原东缘新生代隆升剥露与断裂活动的低温热年代学约束[J]. 地球物理学报, 2020, 63(11): 4154-4167.
本文引用 [1]

Comments

PDF(7621 KB)

Accesses

Citation

Detail
Sections
Recommended
Copyright © Earth Science Frontiers, All Rights Reserved.
Powered by Beijing Magtech Co. Ltd.

/

〈 〉