Arid
DOI10.1144/geochem2014-333
Regional scale hydrogeochemical mapping of the northern Yilgarn Craton, Western Australia: a new technology for exploration in arid Australia
Gray, David J.1; Noble, Ryan R. P.1; Reid, Nathan1; Sutton, Gordon J.2; Pirlo, Mark C.3
通讯作者Gray, David J.
来源期刊GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS
ISSN1467-7873
EISSN2041-4943
出版年2016
卷号16期号:1页码:100-115
英文摘要

The northern Yilgarn Craton, with an extensive mineral exploration history and relatively fresh and neutral groundwaters, was selected to test the utility of regional hydrogeochemical mapping in Australia. The assembled data of 2509 groundwater samples (generally at 4-8 km spacing) are relatively unbiased, allowing robust statistical analysis such as testing sample types (flowing v. ’stagnant’), contamination, and lithological controls on groundwater characteristics. Lithological indicators were developed to map underlying bedrock through cover. Areas with discrepancies between groundwater results and previous geological mapping were identified. Where these are areas previously discounted as prospective for mineral commodities, they may now be re-considered on this basis. Even in well explored parts of this region, this study identified new areas which may have prospective rocks overlain with a thin (<50 m) veneer of granitic material. A large background data set was produced that has significant benefits for lithological discrimination, mineral exploration, guiding human and livestock drinking water supplies and environmental management (e.g. mine closure).


Groundwater chemistry can effectively map large-scale lithological changes in these semi-arid environments, and in turn can reduce uncertainly about the prospectivity of areas within the northern Yilgarn Craton. This should reduce the drilling and associated costs required to delineate a target. The methods and interpretation developed in this study will enhance mineral exploration into covered environments as much of the northern two thirds of Australia has similar groundwater environments. This methodology can be expanded into covered arid terrains worldwide. Additionally, this can be used as background to improve interpretation of other small scale studies. Improving the exploration potential of other more difficult regions of Australia will encourage industry exploration in Australia, and provide potential future economic gains.


英文关键词groundwater geology mapping weathering exploration geochemistry
类型Article
语种英语
国家Australia ; USA
收录类别SCI-E
WOS记录号WOS:000378136700008
WOS关键词BROKEN-HILL REGION ; GEOCHEMICAL-EXPLORATION ; MINERAL EXPLORATION ; GROUNDWATER ; ISOTOPES ; SULFUR ; URANIUM ; WATERS ; MICAS
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193164
作者单位1.CSIRO Mineral Resources, 26 Dick Perry Ave, Kensington, WA 6151, Australia;
2.Univ New S Wales, Sch Chem, Sydney, NSW 2052, Australia;
3.Www Pirlo Com Au, New York, NY USA
推荐引用方式
GB/T 7714
Gray, David J.,Noble, Ryan R. P.,Reid, Nathan,et al. Regional scale hydrogeochemical mapping of the northern Yilgarn Craton, Western Australia: a new technology for exploration in arid Australia[J]. Commonwealth Scientific and Industrial Research Organisation,2016,16(1):100-115.
APA Gray, David J.,Noble, Ryan R. P.,Reid, Nathan,Sutton, Gordon J.,&Pirlo, Mark C..(2016).Regional scale hydrogeochemical mapping of the northern Yilgarn Craton, Western Australia: a new technology for exploration in arid Australia.GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS,16(1),100-115.
MLA Gray, David J.,et al."Regional scale hydrogeochemical mapping of the northern Yilgarn Craton, Western Australia: a new technology for exploration in arid Australia".GEOCHEMISTRY-EXPLORATION ENVIRONMENT ANALYSIS 16.1(2016):100-115.
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