| Abstract: | A geophysical characterization of Lollie Levee near Conway, Arkansas, was conducted in February 2011. A capacitively coupled resistivity survey (using Geometric‘s OhmMapper) was completed along the top and toe of the 6.7-mile levee. Two-dimensional inversions were conducted on the geophysical data. As a quality-control measure, cores and direct push logs were taken at approximately 1-mile intervals along the levee. The capacitively coupled resistivity survey, the coring, and the direct push logs were used to characterize the geologic materials. Comparison of the cores and the direct push log data, along with published resistivity values, indicates that resistivity values of 200 Ohm-meters or greater represent relatively clean sand, with decreasing resistivity values occurring with increasing silt and clay content. The cores indicated that the levee is composed of a heterogeneous mixture of sand, silt, and clay. The capacitively coupled resistivity sections confirm that the levee is composed of a heterogeneous mixture of high and low resistivity materials and show that the composition of the levee varies spatially. The geologic materials underlying the levee vary spatially as a result of the geologic processes that deposited them. In general, the naturally deposited geologic materials underlying the levee contain a greater amount of low resistivity materials in the southern extent of the levee. |
| Genre: | USGS Numbered Series |
| ProdID: | 70005710 |
| Citation Author: | Gillip, Jonathan A.; Payne, Jason D. |
| Citation Contributing Office: | Arkansas Water Science Center |
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| Citation Language: | English |
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| Citation LatN: | 0350400 |
| Citation LatS: | 0345800 |
| Citation LonE: | -0923000 |
| Citation LonW: | -0923800 |
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| Citation Online Only Flag: | Y |
| Citation Phsyical Description: | iv, 27 p. |
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| Citation Public Comments: | Prepared in cooperation with Faulkner County |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Data Series |
| Citation Series Code: | DS |
| Citation Series Number: | 640 |
| Citation Search Results Text: | Geophysical characterization of the Lollie Levee near Conway, Arkansas, using capacitively coupled resistivity, coring, and direct push logging; 2011; DS; 640; Gillip, Jonathan A.; Payne, Jason D. |
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| Citation Year: | 2011 |
| Type: | citation/reference |
| Text: | Geophysical characterization of the Lollie Levee near Conway, Arkansas, using capacitively coupled resistivity, coring, and direct push logging; 2011; DS; 640; Gillip, Jonathan A.; Payne, Jason D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ds_640.gif |
| URL (INDEX PAGE): | http://pubs.usgs.gov/ds/640/ |
| Date Other: | Tue, 11 Oct 2011 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
