Главная Коллекция "Revolution" Геология, гидрология и геодезия Трансформация геосистем восточной части Предсаянского прогиба

Трансформация геосистем восточной части Предсаянского прогиба

Оценка изменений метеоэнергетических и геохимических характеристик геосистем Сибирской платформы. Изучение формирования и развития Байкальской рифтовой зоны. Анализ трансформации границ и предгорных ландшафтов в восточной части Предсаянского прогиба.

Рубрика Геология, гидрология и геодезия
Вид статья
Язык русский
Дата добавления 11.12.2020
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Abstract

The Transformation of Geosystems of the Eastern Sayan Deflection

T. I. Konovalova, V. B. Sochava Institute of Geography SB RAS, Irkutsk Irkutsk State University, Irkutsk

E. I. Nagovizina, Irkutsk State University, Irkutsk

The results of the study of the transformation of geosystems of the Eastern Sayan deflection, which is characterized by the formation of rift mode of development of the territory.

It is established that at the present time there is no common understanding of the concept of «foothill landscape», its boundaries, essence, systematics.

Not all this clarifies the understanding of ways to solve the problem of assessing the transformation of geosystems foothill areas.

It is shown that significant differences in the understanding of the nature of foothill landscapes give rise to the need to use the term «foothill bend».

The necessity of using this term to show the leading role of structural- geological factors in the formation and development of this territory is emphasized.

The main stages of temporary transformation of geosystems of the territory are revealed.

It is established that in the Holocene there were conditions of the next transformation of geosystems caused by joint manifestation of xerophytization and warming of climate and high tectonic activity of the territory.

It is established that the main transformations of the geosystems of the pre-Sayan deflection occur in the areas of the Sharyzhalgai ledge of the Siberian platform and the lowest part of the deflection occupied by internal deltas.

It is determined that a significant part of geosystems of the research area is characterized by rigid internal interconnections, as a result of which the change of any component can lead to irreversible transformation of the geosystem itself. The landscape map is made.

The content of the map allows drawing conclusions on the main dynamic trends, stability of geosystems and the nature of their internal relationships.

The map can be a source of geosystem transformation predictions.

Keywords: plate-forme, Oriental Sayan, Rift zone, geosystem, spatial-temporaire transformation.

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