东亚速地区黄土夹层大型平底洼地构造(以“Chervonaya Pad”为例)

Q1 Social Sciences
A. Zakharov, А Л Захаров, E. Konstantinov, Е А Константинов
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引用次数: 1

摘要

研究了东亚速海地区最大的定向凹陷之一“Chervonaya Pad”的地质地貌结构。该研究是基于对遥感数据的分析结果,以及人工钻探和研究沿海露头所获得的新地质数据。揭示了邻近大凹陷与“切尔沃那亚垫”的形态相似性特征。这是它们起源一致的证据。这允许我们将“Chervonaya Pad”作为研究的模型对象。“Chervonaya Pad”的地质构造和形态特征表明,该凹陷是受地表气流影响而在黄土覆盖层上发育的剥蚀形态。古土壤地层学研究表明,坳陷形成的主要阶段为中更新世末期。根据所获得的资料,验证了现有关于东亚速海地区大型平底坳陷形成的假设。结果表明,前人提出的热岩溶、侵蚀-漫溢、黄土沉降、河口-湖泊等大型洼地形成机制与“切尔沃纳亚垫”地质地貌构造的实际资料不一致。作者提出了东亚速地区大型洼地的风成剥蚀(通货紧缩)成因假说。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structure of large flat-bottom depressions on loess interfluves of eastern Azov region (on the example of “Chervonaya Pad'”)
Geological and geomorphological structure of the “Chervonaya Pad’”, one of the largest orientated depressions of Eastern Azov region, was considered. The study is based on the results of the analysis of remote-sensing data and new geological data obtained during manual drilling and studying the coastal outcrops. Features of the morphological similarity between the neighboring large depressions and “Chervonaya Pad’” was revealed. It is evidence of the unity of their origin. This allows us to consider “Chervonaya Pad’” as a model object for research. The features of the geological structure and morphology of the “Chervonaya Pad’” show that the depression is a denudation form developed in the cover of loess deposits as a result of the impact of airflow on the surface. According to the paleosol stratigraphy, it was revealed that the main stage of the formation of the depression was in the end of the Middle Pleistocene.Based on the material obtained, the authors verify the existing hypotheses of the formation of the large flat-bottom depression relief of the Eastern Azov region. It is revealed that the previously proposed mechanisms for the formation of large depressions (thermokarst, erosion-suffusion, loess subsidence, estuary-lake) do not consistent with the actual data on the geological-geomorphological structure of the “Chervonaya Pad’”. The authors propose the hypothesis of the eolian-denudation (deflation) origin of large depressions of the Eastern Azov region.
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来源期刊
Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya
Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya Social Sciences-Geography, Planning and Development
CiteScore
1.10
自引率
0.00%
发文量
11
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