Flooding Processes in Subarctic Mountains as Affected by Catchment Areas  Geology

Glotov, V. E.; Glotova, L. P.; Ushakov, M. V.

doi:10.21177/1998-4502-2020-12-1-26-38

SDMT

2020

DOI: 10.21177/1998-4502-2020-12-1-26-38

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Flooding Processes in Subarctic Mountains as Affected by Catchment Areas Geology

V. E. Glotov¹,

L. P. Glotova²,

M. V. Ushakov³

Abstract: Ответственность за содержание статей несут авторы. Редакция не имеет возможности возвращать присылаемые материалы. За сведения в рекламных материалах редакция ответственности не несет. Перепечатка допускается только с разрешения редакции и с обязательной ссылкой на журнал «Устойчивое развитие горных территорий». Журнал зарегистрирован в Федеральной службе по надзору за соблюдением законодательства в сфере массовых коммуникаций и охраны культурного наследия.

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Hydrogeological dissimilarity of geodynamically different terranes

Glotov¹

2021

jour

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The article presents and analyzes the data on ground waters of active (suprapermafrost) and hindered (subpermafrost) water exchange of geodynamically different terrains in order to prove the hydrogeological importance of their historical and tectonic characteristics. On the example of Trans-Polar Chukotka it is shown that, under suprapermafrost conditions, the ubiquitous eluvial-deluvial nappes are the most water-abundant on the terrane – a fragment of the passive continental margin, whereas they are the least water-abundant on the terrains of the active margin. Hydrogeological situation changes under subpermafrost conditions: more permeable and water-retaining rocks compose the terranes of the active margin. These differences are associated with the level of rock tectonic decompaction and, accordingly, with different intensity of weathering processes in the terrane rocks of different geodynamic origin in suprapermafrost and subpermafrost conditions. The hypergenesis zone on the terranes of the passive continental margin features coarse-grained rock weathering products accumulated in relatively calm geological and historical environments, the aggregate is sandy. The terranes of the active margin, which underwent long-term subvertical and subhorizontal displacements contain more fine-grained weathering products; the aggregate includes sandy loam and clay sand. Since the permafrost strata in both Trans-Polar Chukotka and Eastern Siberia is greater than the depth of hypergene transformations, the terranes of the active continental margin, the rocks of which were impacted by tectonic decompaction processes, mainly of a strike-slip and thrust nature, feature greater water abundance in subpermafrost conditions.

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Hydrogeological dissimilarity of geodynamically different terranes

Glotov¹

2021

jour

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Flooding Processes in Subarctic Mountains as Affected by Catchment Areas Geology

Cited by 1 publication

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Hydrogeological dissimilarity of geodynamically different terranes

Hydrogeological dissimilarity of geodynamically different terranes

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