title: Hydrogeological and hydrochemical investigation for below-sea-level quarrying at cement raw material site (Kocaeli-Darica, Turkey).
abstract: A research has been carried out to investigate the effects of below sea level mining on the cement raw material quality of a limestone quarry located adjacent to the shoreline near Darica-Kocaeli-Turkey. Field studies involved rock mass characterization through discontinuity surveys performed at the working benches of the quarry as well as on the core samples, monitoring of groundwater levels, performance of water pressure tests, and in-situ hydrochemical measurements. Hydrogeological data suggest that the carbonate sequence forms a poor unconfined aquifer having hydraulic conductivity values ranging between 10(-6) m/s and 10(-8) m/s. In the quarry, water seepages can only be observed at the shear zones. Electrical conductivity profiles taken from the boreholes located at various distances from the shore line indicated the present position of the salt water wedge.
authors.affiliation: Department of Geological Engineering, Middle East Technical University, Ankara, Turkey. vedat@metu.edu.tr
authors.forename: Vedat
authors.initials: V
authors.lastname: Doyuran
authors.forename: Nurkan
authors.initials: N
authors.lastname: Karahanoğlu
authors.forename: Zeki
authors.initials: Z
authors.lastname: Camur
authors.forename: Tamer
authors.initials: T
authors.lastname: Topal
authors.forename: M Lütfi
authors.initials: ML
authors.lastname: Süzen
authors.forename: Ertan
authors.initials: E
authors.lastname: Yeşilnacar
mesh_terms: D002119:Calcium Carbonate; D003252:Construction Materials; D004784:Environmental Monitoring; D055593:Geological Phenomena; D005844:Geology; D008906:Mining; D012623:Seawater; D014872:Water Movements
chemical_list: D002119:Calcium Carbonate