UIS Commission on Karst Hydrogeology and Speleogenesis
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Karstbase Bibliography Database

Featured article: other geoscience journals
Schleusener, Florian; Kempe, Stephan; Dirks, Heiko; Rausch, Randolf; Göbel, Patricia
Die erdfälle von layla und al-kharj – einblicke in die karst-hydrogeologie des oberen jura von saudi-arabien
Grundwasser
2013
1
6

Until the end of the 20th century, the sinkholelakes of Layla and Al-Kharj formed oases in central Saudi Arabia. They were fed by ascending groundwater from the karstified Upper Jurassic anhydrites of the Arab and Hith formations. Morphologic features of a cave near Al-Kharj and hydraulic heads in wells of the Layla region show that the karstification of the anhydrites was hypogene. The karstification led to zones of collapse in the overlying Cretaceous sediments. Because of the exploitation of the underlying aquifer, the sinkhole-lakes dried up, exposing worldwide singular sublacustrine gypsum tufas on their walls. The gypsum tufas and widespread gypsum crusts in the vicinity of the sinkholes reflect the former ascent of the sulphateenriched groundwater.

Sinkholes; Hypogene karst; Layla Lakes; Gypsum tufa; Subrosion
1432-1165
10.1007/s00767-013-0235-3
Schleusener, Florian; Kempe, Stephan; Dirks, Heiko; Rausch, Randolf; Göbel, Patricia , 2013, Die erdfälle von layla und al-kharj – einblicke in die karst-hydrogeologie des oberen jura von saudi-arabien , Grundwasser , 1 - 6 http://link.springer.com/article/10.1007%2Fs00767-013-0235-3