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Structural controls on groundwater flow and groundwater salinity in the Spicers Creek catchment, Central West region, New South Wales by Karina Morgan; Jerzy Jankowski; Geoffrey Taylor is a Environmental Science article available to read on EtoBox.

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## Abstract Saline seepage zone development, and hence the onset of dryland salinity, is a major environmental problem occurring within the Spicers Creek catchment. The primary objective of this paper was to identify previously unmapped faults and show the correlation between these faults and groundwater salinization. As identified from this study, there is a close association between geological structural features and the formation of saline seepage zones. The most saline groundwaters in the catchment were encountered where two geological structures join and form a fault intersection. These saline groundwaters are found at various depths within the fractured aquifers, and changes in groundwater chemistry in the aquifers are associated with the presence of fault zones. ^18^O and δ^2^H stable isotopes, together with ^87^Sr/^86^Sr isotopic ratios, indicate that groundwaters within the fault zones are enriched in ^18^O and have a strontium signature similar to seawater. This study identifies several geological structures in the Spicers Creek catchment and demonstrates that groundwaters with the highest salinity arise where fault intersections occur. The results of this study may be us

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Author

Karina Morgan; Jerzy Jankowski; Geoffrey Taylor

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0885-6087)

Published

2006

Language

EN

Field

Environmental Science (Physical Sciences)