A HYDROGEOCHEMICAL AND STREAM SEDIMENT SURVEY OF THE ASKRIGG BLOCK IN THE NORTHERN PENNINE OREFIELD
| Autor: | A. S. Al-Badri, P. R. Ineson |
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| Rok vydání: | 1981 |
| Předmět: | |
| Zdroj: | Proceedings of the Yorkshire Geological Society. 43:357-376 |
| ISSN: | 2041-4811 0044-0604 |
| DOI: | 10.1144/pygs.43.4.357 |
| Popis: | SUMMARY A regional hydrogeochemical reconnaissance survey of the southern part of the northern Pennine orefield (Askrigg Block) was undertaken at a sampling density of 1 per 2km 2 . For comparison a stream sediment survey using a sample density of 1 per 7km 2 was also conducted. The water samples were analysed for Na, K, Ca, Mg, Fe, Mn, Sr, Zn, Cu, Ag, Pb, Cd, Co, and Ni by atomic absorption spectrophotometry. Colourimetric methods were used to determine NO 2 , B, and Si, and Fe, NO 2 and pH were analysed by a specific ion analyser. Li was determined by flame photometry and standard wet chemical methods were employed in the determination of SO 4 , Cl, CO 2 , Fe 2+ and Fe 3+ . The stream sediments were analysed by X-ray fluorescence spectrometry. The analytical results (>10,000) were interpreted using multivariate statistical techniques. Examples of geochemical patterns and anomalies related to geology, pollution and mineralisation are identified. Silica analyses have delineated the Namurian outcrop. Certain Pb, Zn, Cu, V, Na and Cl anomalies are attributed to pollution from agricultural fertilisation and old smelting and/or dressing sites. Zn, F, Pb, Cu, Ni, Co and Ba anomalies are coincident with known mineralisation as well as, as yet, unproven ore deposits. |
| Databáze: | OpenAIRE |
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