| Abstract: | Studies have demonstrated the utility of fluvial bed sediment chemical data in assesing local water-quality conditions. However, establishing local background trace element levels can be difficult. Reference to published average concentrations or the use of dated cores are often of little use in small areas of diverse local petrology, geology, land use, or hydrology. An alternative approach entails the construction of a series of sediment-trace element predictive models based on data from environmentally diverse but unaffected areas. Predicted values could provide a measure of local background concentrations and comparison with actual measured concentrations could identify elevated trace elements and affected sites. Such a model set was developed from surface bed sediments collected nationwide in the United States. Tests of the models in a small Louisiana basin indicated that they could be used to establish local trace element background levels, but required recalibration to account for local geochemical conditions outside the range of samples used to generate the nationwide models. |
| Genre: | Conference Paper |
| ProdID: | 70016767 |
| Citation Author: | Horowitz, A. J.; Elrick, K. A.; Demas, C. R.; Demcheck, D. K. |
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| Citation End Page: | 348 |
| Citation Issue: | 203 |
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| Citation Language: | English |
| Citation Larger Work Title: | IAHS Publication (International Association of Hydrological Sciences) |
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| Citation Number Of Pages: | 10 |
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| Citation Publisher: | Publ by IAHS |
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| Citation Search Results Text: | Use of sediment-trace element geochemical models for the identification of local fluvial baseline concentrations; 1991; Conference Paper; IAHS Publication (International Association of Hydrological Sciences); Horowitz, A. J.; Elrick, K. A.; Demas, C. R.; Demcheck, D. K. |
| Citation Start Page: | 339 |
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| Citation Year: | 1991 |
| Type: | citation/reference |
| Text: | Use of sediment-trace element geochemical models for the identification of local fluvial baseline concentrations; 1991; Conference Paper; IAHS Publication (International Association of Hydrological Sciences); Horowitz, A. J.; Elrick, K. A.; Demas, C. R.; Demcheck, D. K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 1991 00:00 -0600 |
| Publisher: | Publ by IAHS |
