Collected Item: “Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)”
Врста публикације
Рад у зборнику
Верзија документа
објављена
Језик
енглески
Аутор/и (Милан Марковић, Никола Николић)
Alexander B. Klimchouk, Saša Milanović, Cristian Bittencourt
Наслов рада (Наслов - поднаслов)
Hypogene karst associated with igneous intrusions and its influence on the subsequent karst evolution in high mountains (Central Andes, Peru)
Назив конференције (зборника), место и датум одржавања
Conference: 21st International Congress of Speleology, France, June 2021
Издавач (Београд : Просвета)
France: ICS
Година издавања
2021
Сажетак рада на енглеском језику
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.
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.
Линк
https://www.researchgate.net/publication/352226169_Hypogene_karst_associated_with_igneous_intrusions_and_its_influence_on_the_subsequent_karst_evolution_in_high_mountains_Central_Andes_Peru
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