Glacial Sands 2D ERI
Cross-section of a Glacial Deposit Based on DC Electrical Resistivity Confirmed by Coring Data
Fig. 1. 2D ERI profile of a glacial deposit (kame) with 4 auger records as control. With in-line electrode spacing of 4 m, the resistivity section is low-resolution. Auger data confirm that high resistivities (orange-red) are sand and gravel; low resistivities (blues) are clay-rich mud.*
Fig. 2. Simplified lithologic interpretation of 2D resistivity profile in Fig.1 based on the calibration of sediments in the 4 auger cores with resistivity. Contact zone between sand and gravel (relatively resistive) and clay (relatively conductive) primarily consists of sandy loam. *
* Beresnev, I. A., Hruby, C. E., and Davis, C. A., 2002, The use of multi-electrode resistivity imaging in gravel prospecting: Journal of Applied Geophysics, v. 49, no. 4, p. 245-254.