Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)

The current study site of the project Inform@Risk is located at a landslide prone area at the eastern slopes of the city of Medellín, Colombia, which are composed of the deeply weathered Medellín Dunite, an ultramafic Triassic rock. The dunite rock mass can be characterized by small-scale changes, w...

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Autores principales:	Tamara Breuninger, Bettina Menschik, Agnes Demharter, Moritz Gamperl, Kurosch Thuro
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dunite landslide investigation geological investigation mineralogical predisposition pseudokarst secondary serpentinization Medicine R
Acceso en línea:	https://doaj.org/article/4f14a29e0eb145e3b3a09cfdf37d3ba5
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spelling	oai:doaj.org-article:4f14a29e0eb145e3b3a09cfdf37d3ba52021-11-11T16:17:40ZInvestigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)10.3390/ijerph1821111411660-46011661-7827https://doaj.org/article/4f14a29e0eb145e3b3a09cfdf37d3ba52021-10-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/21/11141https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601The current study site of the project Inform@Risk is located at a landslide prone area at the eastern slopes of the city of Medellín, Colombia, which are composed of the deeply weathered Medellín Dunite, an ultramafic Triassic rock. The dunite rock mass can be characterized by small-scale changes, which influence the landslide exposition to a major extent. Due to the main aim of the project, to establish a low-cost landslide early warning system (EWS) in this area, detailed field studies, drillings, laboratory and mineralogical tests were conducted. The results suggest that the dunite rock mass shows a high degree of serpentinization and is heavily weathered up to 50 m depth. The rock is permeated by pseudokarst, which was already found in other regions of this unit. Within the actual project, a hypothesis has for the first time been established, explaining the generation of the pseudokarst features caused by weathering and dissolution processes. These parameters result in a highly inhomogeneous rock mass and nearly no direct correlation of weathering with depth. In addition, the theory of a secondary, weathering serpentinization was established, explaining the solution weathering creating the pseudokarst structures. This contribution aims to emphasize the role of detailed geological data evaluation in the context of hazard analysis as an indispensable data basis for landslide early warning systems.Tamara BreuningerBettina MenschikAgnes DemharterMoritz GamperlKurosch ThuroMDPI AGarticledunitelandslide investigationgeological investigationmineralogical predispositionpseudokarstsecondary serpentinizationMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 11141, p 11141 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dunite landslide investigation geological investigation mineralogical predisposition pseudokarst secondary serpentinization Medicine R
spellingShingle	dunite landslide investigation geological investigation mineralogical predisposition pseudokarst secondary serpentinization Medicine R Tamara Breuninger Bettina Menschik Agnes Demharter Moritz Gamperl Kurosch Thuro Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
description	The current study site of the project Inform@Risk is located at a landslide prone area at the eastern slopes of the city of Medellín, Colombia, which are composed of the deeply weathered Medellín Dunite, an ultramafic Triassic rock. The dunite rock mass can be characterized by small-scale changes, which influence the landslide exposition to a major extent. Due to the main aim of the project, to establish a low-cost landslide early warning system (EWS) in this area, detailed field studies, drillings, laboratory and mineralogical tests were conducted. The results suggest that the dunite rock mass shows a high degree of serpentinization and is heavily weathered up to 50 m depth. The rock is permeated by pseudokarst, which was already found in other regions of this unit. Within the actual project, a hypothesis has for the first time been established, explaining the generation of the pseudokarst features caused by weathering and dissolution processes. These parameters result in a highly inhomogeneous rock mass and nearly no direct correlation of weathering with depth. In addition, the theory of a secondary, weathering serpentinization was established, explaining the solution weathering creating the pseudokarst structures. This contribution aims to emphasize the role of detailed geological data evaluation in the context of hazard analysis as an indispensable data basis for landslide early warning systems.
format	article
author	Tamara Breuninger Bettina Menschik Agnes Demharter Moritz Gamperl Kurosch Thuro
author_facet	Tamara Breuninger Bettina Menschik Agnes Demharter Moritz Gamperl Kurosch Thuro
author_sort	Tamara Breuninger
title	Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
title_short	Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
title_full	Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
title_fullStr	Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
title_full_unstemmed	Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)
title_sort	investigation of critical geotechnical, petrological and mineralogical parameters for landslides in deeply weathered dunite rock (medellín, colombia)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4f14a29e0eb145e3b3a09cfdf37d3ba5
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Investigation of Critical Geotechnical, Petrological and Mineralogical Parameters for Landslides in Deeply Weathered Dunite Rock (Medellín, Colombia)

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