NDLI: Hypothesis on the hydrogeological context of wetland areas and springs related to evaporitic karst aquifers (Málaga, Córdoba and Jaén provinces, Southern Spain)

Content Provider	Springer Nature Link
Author	Andreo, Bartolomé Gil Márquez, José Manuel Mudarra, Matías Linares, Luis Carrasco, Francisco
Copyright Year	2016
Abstract	The northern sector of the External Zone of the Betic Cordillera (S Spain) is formed by an olistostrome unit known as the Chaotic Subbetic Complexes (CSC). This megabreccia is basically made of clays and evaporite rocks (gypsum and salt) of Upper Triassic (Keuper) age as well as other lithologies (dolostones, limestones, marls and calcareous sandstones) belonging to different ages (Jurassic, Cretaceous and Tertiary). Despite of low permeability has been traditionally assumed for these materials, water flow and storage through them is possible due to the aquitard behavior of clays and sandstones and the presence of conduits generated by dissolution/karstification processes within the evaporite rocks. The lithological complexity of the CSC determines its hydrogeological heterogeneity, with groundwater flows of different length and various scales from recharge areas to discharge zones. Thus, wetlands and springs placed at lower altitudes are associated with large (regional) groundwater flows, of greater residence time within the aquifer, and they normally drain high salinity waters mostly connected with ascending flow. This work provides an overview of the main geological and hydrogeological aspects related to groundwater flow within the CSC on the basis of several case-studies. Conceptual models are proposed for these cases, since they are the base to carry out a genetic-functional classification of wetlands potentially useful for their management.
Starting Page	1
Ending Page	19
Page Count	19
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	75
Issue Number	9
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Evaporitic (karst) aquifer Regional flow Saline spring Wetland South Spain Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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