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Analysis of groundwater dynamics in the complex aquifer system of Kazan Trona, Turkey, using environmental tracers and noble gases

Sebnem Arslan; Hasan Yazicigil; Martin Stute; Peter Schlosser; William Massie Smethie Jr.

Title:
Analysis of groundwater dynamics in the complex aquifer system of Kazan Trona, Turkey, using environmental tracers and noble gases
Author(s):
Arslan, Sebnem
Yazicigil, Hasan
Stute, Martin
Schlosser, Peter
Smethie Jr., William Massie
Date:
Type:
Articles
Department(s):
Lamont-Doherty Earth Observatory
Earth and Environmental Engineering
Volume:
23
Persistent URL:
Book/Journal Title:
Hydrogeology Journal
Geographic Area:
Turkey
Abstract:
The Eocene deposits of Kazan Basin in Turkey contain a rare trona mineral which is planned to be extracted by solution mining. The complex flow dynamics and mixing mechanisms as noted from previous hydraulic and hydrochemical data need to be augmented with environmental tracer and noble gas data to develop a conceptual model of the system for the assessment of the impacts of the mining and to develop sustainable groundwater management policies throughout the area. The tracers used include the stable isotopes of water (δ²H, δ¹⁸O), δ¹³C and ¹⁴C of dissolved inorganic carbon (DIC), tritium (³H), the chlorofluorocarbons CFC-11 and CFC-12, and the noble gases He and Ne. The system studied consists of three aquifers: shallow, middle, and deep. CFC data indicate modern recharge in the shallow system. The estimates of ages through ¹⁴C dating for the deeper aquifer system are up to 34,000 years. Helium concentrations cover a wide range of values from 5 × 10⁻⁸ to 1.5 × 10⁻⁵ cm³ STP/g. ³He/⁴He ratios vary from 0.09R_A to 1.29R_A (where R_A is the atmospheric ³He/4He ratio of 1.384 × 10⁻⁶), the highest found in water from the shallow aquifer. Mantle-derived 3He is present in some of the samples indicating upward groundwater movement, possibly along a NE–SW-striking fault-like feature in the basin.
Subject(s):
Groundwater--Management
Groundwater tracers
Trona mines and mining--Environmental aspects
Geology
Hydrology
Geochemistry
Publisher DOI:
https://doi.org/10.1007/s10040-014-1188-z
Item views
117
Metadata:
text | xml
Suggested Citation:
Sebnem Arslan, Hasan Yazicigil, Martin Stute, Peter Schlosser, William Massie Smethie Jr., , Analysis of groundwater dynamics in the complex aquifer system of Kazan Trona, Turkey, using environmental tracers and noble gases, Columbia University Academic Commons, .

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