Constraining groundwater flow, residence times, inter-aquifer mixing, and aquifer properties using environmental isotopes in the southeast Murray Basin, Australia

Ian Cartwright; Tamie Weaver; Dioni Cendon; L Keith Fifield; Sarah Tweed; Ben Petrides; Ian Swane

doi:10.1016/j.apgeochem.2012.02.006

Constraining groundwater flow, residence times, inter-aquifer mixing, and aquifer properties using environmental isotopes in the southeast Murray Basin, Australia

Ian Cartwright, Tamie Weaver, Dioni Cendon, L Keith Fifield, Sarah Tweed, Ben Petrides, Ian Swane

Research output: Contribution to journal › Article › Research › peer-review

73 Citations (Scopus)

Abstract

Environmental isotopes (particularly delta O-18, delta H-2, and delta C-13 values, Sr-87/Sr-86 ratios, and a(14)C) constrain geo-chemical processes, recharge distribution and rates, and inter-aquifer mixing in the Riverine Province of the southern Murray Basin. Due to methanogenesis and the variable delta C-13 values of matrix calcite, delta C-13 values are highly variable and it is difficult to correct C-14 ages using delta C-13 values alone. In catchments where delta C-13 values, Sr-87/Sr-86 ratios, and major ion geochemistry yield similar a(14)C corrections, similar to 15 of the C is derived from the aquifer matrix in the silicate-dominated aquifers, and this value may be used to correct ages in other catchments. Most groundwater has a(14)C above background (similar to 2 pMC) implying that residence times are

Original language	English
Pages (from-to)	1698 - 1709
Number of pages	12
Journal	Applied Geochemistry
Volume	27
Issue number	9
DOIs	https://doi.org/10.1016/j.apgeochem.2012.02.006
Publication status	Published - 2012

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10.1016/j.apgeochem.2012.02.006

Cite this

@article{a61fd4b1ce7e4b5b9c7700dae2198caf,

title = "Constraining groundwater flow, residence times, inter-aquifer mixing, and aquifer properties using environmental isotopes in the southeast Murray Basin, Australia",

abstract = "Environmental isotopes (particularly delta O-18, delta H-2, and delta C-13 values, Sr-87/Sr-86 ratios, and a(14)C) constrain geo-chemical processes, recharge distribution and rates, and inter-aquifer mixing in the Riverine Province of the southern Murray Basin. Due to methanogenesis and the variable delta C-13 values of matrix calcite, delta C-13 values are highly variable and it is difficult to correct C-14 ages using delta C-13 values alone. In catchments where delta C-13 values, Sr-87/Sr-86 ratios, and major ion geochemistry yield similar a(14)C corrections, similar to 15 of the C is derived from the aquifer matrix in the silicate-dominated aquifers, and this value may be used to correct ages in other catchments. Most groundwater has a(14)C above background (similar to 2 pMC) implying that residence times are",

author = "Ian Cartwright and Tamie Weaver and Dioni Cendon and Fifield, \{L Keith\} and Sarah Tweed and Ben Petrides and Ian Swane",

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doi = "10.1016/j.apgeochem.2012.02.006",

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journal = "Applied Geochemistry",

issn = "0883-2927",

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T1 - Constraining groundwater flow, residence times, inter-aquifer mixing, and aquifer properties using environmental isotopes in the southeast Murray Basin, Australia

AU - Cartwright, Ian

AU - Weaver, Tamie

AU - Cendon, Dioni

AU - Fifield, L Keith

AU - Tweed, Sarah

AU - Petrides, Ben

AU - Swane, Ian

PY - 2012

Y1 - 2012

N2 - Environmental isotopes (particularly delta O-18, delta H-2, and delta C-13 values, Sr-87/Sr-86 ratios, and a(14)C) constrain geo-chemical processes, recharge distribution and rates, and inter-aquifer mixing in the Riverine Province of the southern Murray Basin. Due to methanogenesis and the variable delta C-13 values of matrix calcite, delta C-13 values are highly variable and it is difficult to correct C-14 ages using delta C-13 values alone. In catchments where delta C-13 values, Sr-87/Sr-86 ratios, and major ion geochemistry yield similar a(14)C corrections, similar to 15 of the C is derived from the aquifer matrix in the silicate-dominated aquifers, and this value may be used to correct ages in other catchments. Most groundwater has a(14)C above background (similar to 2 pMC) implying that residence times are

AB - Environmental isotopes (particularly delta O-18, delta H-2, and delta C-13 values, Sr-87/Sr-86 ratios, and a(14)C) constrain geo-chemical processes, recharge distribution and rates, and inter-aquifer mixing in the Riverine Province of the southern Murray Basin. Due to methanogenesis and the variable delta C-13 values of matrix calcite, delta C-13 values are highly variable and it is difficult to correct C-14 ages using delta C-13 values alone. In catchments where delta C-13 values, Sr-87/Sr-86 ratios, and major ion geochemistry yield similar a(14)C corrections, similar to 15 of the C is derived from the aquifer matrix in the silicate-dominated aquifers, and this value may be used to correct ages in other catchments. Most groundwater has a(14)C above background (similar to 2 pMC) implying that residence times are

U2 - 10.1016/j.apgeochem.2012.02.006

DO - 10.1016/j.apgeochem.2012.02.006

M3 - Article

SN - 0883-2927

VL - 27

SP - 1698

EP - 1709

JO - Applied Geochemistry

JF - Applied Geochemistry

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