Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)
Објеката
- Тип
- Рад у зборнику
- Верзија рада
- објављена
- Језик
- енглески
- Креатор
- Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt
- Извор
- Conference: 21st International Congress of Speleology, France, June 2021
- Издавач
- France : ICS
- Датум издавања
- 2021
- Сажетак
- Carbonate rocks of Cretaceous age are wide spread in the Peruvian Andes. The studied area in the eastern part of the Cordillera Occidental, near a large igneous intrusion and a skarn deposit, exemplifies polygenetic and multi-phase karst development. Hypogene karstification is related to a hydrothermal activity associated with a magmatic event at ca. 11-9.7 Ma responsible for the emplacement of the nearby intrusion and related alteration of the carbonate rocks. It has resulted in deep-rooted, laterally isolated stair-case-rising shaft systems aligned to NE-trending sub-vertical fractures. These caves clearly exhibit a complete suite of remarkably well-preserved speleogens indicative of rising flow, standing as a foremost example of endogenous hypogene speleogenesis related to magmatic intrusions. Commencing in the Early Pleistocene, epigene karstification was strongly influenced by the presence of pre-formed hypogene caves that provided effective vertical drains across the vadose zone and defined hydraulic compartments. However, hypogene caves are largely isolated in the plan view, and lateral integration of the contemporary karst system by epigene karstification is incomplete, resulting in a complex flow system. The overprint of vadose features over hypogene morphologies is very distinct although local. Changes in the base-level position due to the landscape evolution and Pleistocene glaciations were further major factors that influenced epigene karst development.
- Шира категорија рада
- М30
- Ужа категорија рада
- М33
- Права
- Отворени приступ
- Лиценца
- Creative Commons – Attribution-NonComercial-Share Alike 4.0 International
- Формат
Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt. "Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)" in Conference: 21st International Congress of Speleology, France, June 2021, France : ICS (2021)
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