Geological controls on evolution of evaporative precipitates on soil-free substrates and ecosystems, southern New Zealand

D Craw, C Rufaut, D Pillai - Science of the Total Environment, 2022 - Elsevier
Soil-free bare substrates have formed by natural and human-induced processes in a semi-
arid rain shadow, in the lee of actively rising mountains. These substrates have developed …

Hydrogeological controls on formation of Patearoa saline site in Central Otago, New Zealand and definition of geoecological salt lines

D Craw, C Rufaut, S Read, D Pillai - New Zealand journal of …, 2024 - Taylor & Francis
The Patearoa saline site in Maniototo basin has developed on variably clay-altered Otago
Schist. Decomposition and sedimentary redistribution of schist outcrop components has led …

Evolution of alkaline mine drainage and unique biodiversity on soil-free mine substrates, southern New Zealand

D Craw, C Rufaut, D Pillai - Mine Water and the Environment, 2023 - Springer
Relatively impermeable soil-free substrates (clay-rich outcrops and sediments) exposed at
eight abandoned placer gold mines generate alkaline mine drainage through evaporation …

Potential for pastoral irrigation using sulphate-rich waters at Macraes gold mine, southern New Zealand

C Rufaut, E Weightman, D Craw, D Pillai, G Kerr… - Water, Air, & Soil …, 2022 - Springer
There is growing recognition that elevated dissolved sulphate around mines will lead to
significant environmental issues within the industry that need specific management. Various …

Geoecological zonation of revegetation enhances biodiversity at historic mine sites, Southern New Zealand

D Craw, C Rufaut - Minerals, 2021 - mdpi.com
Rocks exposed by mining can form physically, mineralogically, and geochemically diverse
surface substrates. Engineered mine rehabilitation typically involves covering these rocks …

Hydrogeochemical and isotopic insights into groundwater evolution in the agricultural area of the Luanhe Plain

Z Zhang, F Liu, S Chen, W Jiang, H Zhang… - Environmental Earth …, 2024 - Springer
The scarcity of freshwater resources in coastal plains has raised global concerns.
Understanding the chemical characteristics and evolution of groundwater in coastal plains is …

Geochemical evolution of high-pH sodic salt pans in Central Otago, New Zealand

D Craw, C Rufaut, D Pillai, G Kerr - New Zealand Journal of …, 2023 - Taylor & Francis
Soil-free sodic salt pans with local pH> 10 have formed on loess and schist-derived clay
surfaces in the semi-arid climate of Central Otago. This study identifies evaporative mineral …

Contrasting geology and mineralogy of evaporative encrustations in salt-tolerant ecosystems, Maniototo basin, Central Otago, New Zealand

D Craw, C Rufaut, G Kerr, D Pillai - New Zealand Journal of …, 2022 - Taylor & Francis
Evaporative mineral encrustations have formed on bare substrates at three different sites in
the Maniototo basin. Two sites, at Patearoa and Belmont have salts derived primarily from …

Geoecological evolution of New Zealand's only inland salt lake

D Craw, C Rufaut, M Palmer - New Zealand Journal of Geology …, 2024 - Taylor & Francis
ABSTRACT The Sutton Salt Lake is a rare occurrence of an inland evaporative saline lake
on a small landmass with a temperate maritime climate. The lake lies on a bed of …

Stratigraphy and mineralogy of tailings at Macraes gold mine, southern New Zealand

E Weightman, D Craw, T Snow… - New Zealand Journal …, 2022 - Taylor & Francis
Processed tailings in the Mixed tailings impoundment at the Macraes gold mine built up a
sedimentary pile up to 100 m thick between 1990 and 2013. The tailings consist of sand …