The Significance of Ancient Buried Landscapes as Natural Geomorphic Experiments

IF 3.5 2区 地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY Journal of Geophysical Research: Earth Surface Pub Date : 2024-05-21 DOI:10.1029/2023JF007519
B. W. Conway-Jones, N. J. White
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Abstract

There is considerable interest in developing quantitative methods for analyzing present-day fluvial landscapes with a view to extracting information about tectonic forcing and drainage evolution, together with the influence of lithologic substrates and of paleoclimatic variations. In view of the multifactorial nature of this complex problem, it has previously been proposed that natural geomorphic experiments could play a significant role in developing a quantitative understanding of landscape growth and decay. Here, we describe and analyze a stacked sequence of five buried transient landscapes that punctuate marine strata along the fringes of the North Atlantic Ocean. We propose that these landscapes constitute a suite of natural experiments, which illuminate significant aspects of quantitative fluvial geomorphology. Our preliminary analysis of four of these buried landscapes suggests that the amplitude of external tectonic forcing plays a significant role in fluvial landscape evolution. In future, we hope that this suite of natural experiments will be further exploited by the fluvial community with a view to identifying the most appropriate analytical techniques.

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古代埋藏景观作为自然地貌实验的意义
人们对开发定量分析当今河川地貌的方法颇感兴趣,以期提取有关构造作用和排水演变的信息,以及岩性基质和古气候变化的影响。鉴于这一复杂问题的多因素性质,以前曾有人提出,自然地貌实验可以在定量了解地貌生长和衰退方面发挥重要作用。在这里,我们描述并分析了北大西洋边缘海洋地层中的五个埋藏瞬变地貌的叠加序列。我们认为这些地貌构成了一套自然实验,揭示了定量河流地貌学的重要方面。我们对其中四个埋藏地貌的初步分析表明,外部构造作用力的振幅在河流地貌演变中起着重要作用。今后,我们希望这套自然实验能够得到河道学界的进一步利用,以确定最合适的分析技术。
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来源期刊
Journal of Geophysical Research: Earth Surface
Journal of Geophysical Research: Earth Surface Earth and Planetary Sciences-Earth-Surface Processes
CiteScore
6.30
自引率
10.30%
发文量
162
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