The Collection of Drainage Samples for Environmental Analyses From Active Stream Channels

Johnson, Christopher C.; Flight, D.M.A.; Ander, Louise; Lister, Robert; Breward, N.; Fordyce, F.M.; Nice, Sarah E.

doi:10.1016/b978-0-444-53159-9.00004-8

Cited by 3 publications

(2 citation statements)

References 27 publications

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“…Full details of the G‐BASE sampling, analytical and quality control procedures are given by Johnson et al. (2018a, 2018b). A description of the sampling procedure utilized by the G‐BASE survey is given below.…”

Section: Methodsmentioning

confidence: 99%

River Sediment Geochemistry as a Conservative Mixture of Source Regions: Observations and Predictions From the Cairngorms, UK

et al. 2020

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Section: Methodsmentioning

confidence: 99%

River Sediment Geochemistry as a Conservative Mixture of Source Regions: Observations and Predictions From the Cairngorms, UK

et al. 2020

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“…The quality controls are based on the rigorous sampling 282 protocols of the BGS G-BASE methodologies (e.g. Johnson et al, 2005Johnson et al, , 2008. 283…”

Section: Quality Control 278mentioning

confidence: 99%

Geochemical mapping using stream sediments in west-central Nigeria: Implications for environmental studies and mineral exploration in West Africa

Lapworth

Knights

Key

et al. 2012

Applied Geochemistry

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21This paper provides an overview of regional geochemical mapping using stream 22 sediments from central and south-western Nigeria. A total of 1569 stream sediment 23 samples were collected and 54 major and trace elements determined by ICP-MS and 24Au, Pd and Pt by fire assay. Geostatistical techniques (e.g. correlation analysis and 25 principal factor analysis) were used to explore the data, following appropriate data 26 transformation, to understand the data structure, investigate underlying processes 27 controlling spatial geochemical variability and identify element associations.

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Geochemical signatures of stream sediments within the main geological domains and terranes of North and Central Madagascar

Scheib

Lapworth

Pitfield

et al. 2011

Applied Earth Science

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Geochemical mapping of North and Central Madagascar was carried out using stream sediments at an average density of one sample per 11 km 2 . Over 50 elements were determined from some 13 300 stream sediments using a sample size fraction of ,150 mm following hot aqua regia digestion. Partially extractable concentrations of six major elements and seven base metals reveal that the Andriamena 'greenstone' Belt of the Tsaratanana Complex is geochemically distinct from the other geological divisions within the Precambrian basement of central and northern Madagascar. In particular, this study has shown the detailed spatial distribution of anomalous concentrations of base metals which confirm known areas of chromite mineralisation within the Andriamena Belt. Base metal anomalies also occur in relation to Cretaceous and Neogene volcanic rocks, for example at Nosy Be, and mafic-ultramafic intrusions such as along the Maroala deformation zone. The distribution of anomalous Au in stream sediments showed good correspondence with known gold districts of central and northern Madagascar. Highest concentrations were measured in stream sediments from within the Ampasary-Mananjary (southern Androna-Mandritsara) and Andavakoera (northern margin of North Bemarivo) gold districts. The results of the stream sediment geochemistry show that these new data provide valuable information for current and future mineral exploration and environmental studies in Madagascar, at both regional and local scale.

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The Collection of Drainage Samples for Environmental Analyses From Active Stream Channels

Cited by 3 publications

References 27 publications

River Sediment Geochemistry as a Conservative Mixture of Source Regions: Observations and Predictions From the Cairngorms, UK

River Sediment Geochemistry as a Conservative Mixture of Source Regions: Observations and Predictions From the Cairngorms, UK

Geochemical mapping using stream sediments in west-central Nigeria: Implications for environmental studies and mineral exploration in West Africa

Geochemical signatures of stream sediments within the main geological domains and terranes of North and Central Madagascar

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