Geoelektrik und Georadar in der archäologischen Forschung: geophysikalische 3D-Untersuchungen in Munigua (Spanien)

Ullrich, Burkart; Meyer, Cornelius; Weller, Andreas

doi:10.1007/978-3-540-71937-3_5

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…Weller et al (2000), Ullrich et al (2008), use the IP method on slag heaps. Ullrich et al (2007) describe an empirical procedure to evaluate the volume of the slag heaps in Munigua (Spain). The contours of the slag heap were identified based on a phase isovalue of 30 mrad.…”

Section: Introductionmentioning

confidence: 99%

Induced polarization response of porous media with metallic particles — Part 7: Detection and quantification of buried slag heaps

Ahmed

Revil

et al. 2018

GEOPHYSICS

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With the progress of metallurgical activities, more and more dumped slag heaps emerge as valuable deposits to feed the growing need for metal resources. Detecting, quantifying, and reextracting metals from these slags may complement the prospection of new ore deposits. However, the spatial delineation of the slag heap cannot easily be obtained from the resistivity distribution alone (determined either with galvanometric or with induction-based methods). Although the magnetic method can detect slag heaps, it fails to make an estimation of the quantity of metal present in the slag. Alternatively, the induced polarization (IP) method can be used to fulfill this goal. The complex conductivity responses of slag samples from a slag heap in France are obtained in the laboratory. These data are used to assess the grade of the slag, which is close to 8%. Then, a least-squares 3D IP inversion is used to get the subsurface chargeability distribution delimiting the slag heap in the ground. From the linear relationship determined between the chargeability and the volumetric metal content or the volumetric slag content, the metallic volume of the slag heaps can be directly determined. This approach is used at the site of Saint-Vincent sur L'Isle, Dordogne (France), where it allows characterizing the shape of a slag heap and quantifying the total cumulative metal content of the investigated area.

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Section: Introductionmentioning

confidence: 99%

Induced polarization response of porous media with metallic particles — Part 7: Detection and quantification of buried slag heaps

Ahmed

Revil

et al. 2018

GEOPHYSICS

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“…This was done to obtain a characteristic ERT response for chamber tombs in different preservation states (study site Mageiras‐Kioupia) in the present sand‐ and siltstone marl surroundings of the Vounargon Stage of Upper Pliocene age (IGME, ). Different sediments and bedrock material are characterized by different ranges of electrical resistivity due to differences in mineral composition and water content (Loke, ; Ullrich, Meyer, & Weller, ). The lower the clay mineral content and the lower the pore water content, the higher is the electrical resistivity and vice versa.…”

Section: Methodsmentioning

confidence: 99%

Detection and localization of chamber tombs in the environs of ancient Olympia, Peloponnese, Greece, based on a combination of archaeological survey and geophysical prospection

et al. 2019

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Mycenaean chamber tombs are composed of air-filled burial cavities and, therefore, can be detected by non-invasive geophysical methods. In this study, an electrical resistivity tomography (ERT)-based approach was used to detect graves at three different sites in the area surrounding ancient Olympia. We collected ERT data at the necropolis of Mageiras-Kioupia, where a number of chamber tombs had already been located and partly excavated in order to ground-truth the ERT response for chamber tombs in different states of preservation. Near the village of Epitalio, a preceding archaeological survey discovered remains of a one chamber tomb in mid-slope position of a larger hill. There, we applied the ERT-approach, calibrated at Mageiras-Kioupia, to the tomb and detected ten more tomb candidates at this site. In addition to ERT, we carried out ground penetrating radar (GPR) studies at the Epitalio site. In general GPR, data are highly consistent with ERT results. We were thus able to localize an unknown, most probably Mycenaean cemetery where no systematic archaeological information previously existed. In the third area of investigation, the Dartisa plateau, no potential chamber tomb comparable to the ones excavated and measured at Mageiras-Kioupia and Epitalio were identified.

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“…An extension of this method is the induced polarization (IP) method which provides, in addition to the resistivity, information about the concentrations of disseminated ore minerals (e.g., Pelton et al, 1978;Seigel et al, 1997;Ward, 1988;Hupfer et al, 2016). It can also be applied for quantification of slag heap volumes at historical slag sites for archaeological purposes (Florsch et al, 2011(Florsch et al, , 2012(Florsch et al, , 2017 or for the prospection of new ore deposits in dumped slag heaps (Qi et al, 2018) as well as for determining the exact limitation of slag heaps and differentiate the slags from soil (Weller et al, 2000;Ullrich et al, 2007b, c;Meyer et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Geophysical Exploration of a Historical Stamp Mill Dump for the Volume Estimation of Valuable Residues

Martin

Kuhn

Günther

et al. 2020

JEEG

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We present an approach for the estimation of ore processing residue volumes in historical mine waste dumps by the use of different geophysical methods in combination with mineralogical investigations. The stamp mill dump in the Harz mountains, Germany was examined with the methods electrical resistivity tomography (ERT), ground penetrating radar (GPR) and spectral induced polarization (SIP) flanked by mineralogical studies at many drilling points. The mineralogical results were used to calibrate the geophysical results and to distinguish between valuable and non-valuable waste material. With SIP we investigated individual profiles and took lab samples. These lab results emphasize the differences between the fine-grained tailings of clayey silt to silty sand in the top layer and the sandy tailings underneath in both resistivity and phase. From the GPR results we can distinguish between different layers and various backfillings in the first two meters due to the much higher resolution than the other methods. From ERT we achieved an overview about the dimension and inner structure of the dump and the boundary between the sandy residual material and the host rock. To estimate the volume of the residual body we carried out 2D inversion of all ERT profiles followed interpolation between the inverted profiles. From the drilling interpretation, the SIP lab results and the ERT field measurements we defined a resistivity threshold of 350 ohm-m for the ore processing residues to achieve a 3-dimensional body of the dump. The volume of this body was then corrected by a factor due to consideration of uncertainties, e.g., forest areas, inaccessible dump sections, small-scale anomalies (geological or different anthropogenic nature) and inversion coverage. As a result, we were able to calculate the volume of the ore processing residues which can be used further for the determination of the economic potential (remaining metal content).

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Geoelektrik und Georadar in der archäologischen Forschung: geophysikalische 3D-Untersuchungen in Munigua (Spanien)

Cited by 9 publications

References 4 publications

Induced polarization response of porous media with metallic particles — Part 7: Detection and quantification of buried slag heaps

Induced polarization response of porous media with metallic particles — Part 7: Detection and quantification of buried slag heaps

Detection and localization of chamber tombs in the environs of ancient Olympia, Peloponnese, Greece, based on a combination of archaeological survey and geophysical prospection

Geophysical Exploration of a Historical Stamp Mill Dump for the Volume Estimation of Valuable Residues

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