Mobile sediment in an urbanizing karst aquifer: Implications for contaminant transport
Environmental Geology
By: B.J. Mahler, L. Lynch, and P.C. Bennett
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Abstract
Here we investigate geochemical characteristics of sediment in different compartments of a karst aquifer and demonstrate that mobile sediments in a karst aquifer can exhibit a wide range of properties affecting their contaminant transport potential. Sediment samples were collected from surface streams, sinkholes, caves, wells, and springs of a karst aquifer (the Barton Springs portion of the Edwards (Balcones Fault Zone) Aquifer, Central Texas) and their mineralogy, grain-size distribution, organic carbon content, and specific surface area analyzed. Statistical analysis of the sediments separated the sampling sites into three distinct groups: (1) streambeds, sinkholes, and small springs; (2) wells; and (3) caves. Sediments from the primary discharge spring were a mix of these three groups. High organic carbon content and increased potential to transport contaminants; the volume of these sediments is likely to increase with continued urbanization of the watershed.
Suggested Citation
Mahler, B., Lynch, L., Bennett, P., 2000, Mobile sediment in an urbanizing karst aquifer: Implications for contaminant transport: Environmental Geology, v. 39, no. 1, p. 25-38, https://doi.org/10.1007/s002540050434.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Mobile sediment in an urbanizing karst aquifer: Implications for contaminant transport |
| Series title | Environmental Geology |
| DOI | 10.1007/s002540050434 |
| Volume | 39 |
| Issue | 1 |
| Year Published | 2000 |
| Language | English |
| Publisher | Springer |
| Publisher location | Berlin, Germany |
| Description | 14 p. |
| First page | 25 |
| Last page | 38 |
| Country | United States |
| State | Texas |
| Other Geospatial | Edwards Aquifer |