Download PDF - Speleogenesis
Download PDF - Speleogenesis
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56<br />
PLATE 19 MEGASINKHOLES ASSOCIATED WITH HYDROTHERMAL SYSTEMS:<br />
EL ZACATON (MEXICO) AND KIZOREN (TURKEY)<br />
Plate 19. Megasinkholes (shafts) associated with hydrothermal systems, with travertine deposition near water table.<br />
Upper photo: El Zacatón, Mexico, a 325-m deep shaft, approximately 80 m wide at the surface, (see Chapter 4.5; photo by M.Gary).<br />
Lower photo: Kizoren obruk (obruck is a generic name for large collapse features in Turkey), a 125-m deep, approximately 120-m wide<br />
sinkhole in Konya Basin, Turkey. Travertine is exposed on the walls as the water table declined for ~ 20 m during the last several decades<br />
due to regional groundwater extraction. Photo by A.Klimchouk.