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  3D inversion of a single profile MT data acquired on ip anomaly: Case history for mineral exploration in BC, Canada

Vetrov, A., Erdogan, E., Biczok, J. (2023): 3D inversion of a single profile MT data acquired on ip anomaly: Case history for mineral exploration in BC, Canada, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4532

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020944 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020944_1
Genre: Conference Paper

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Vetrov, Anton1, Author
Erdogan, Erhan1, Author
Biczok, John1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: In this study, we used state-of-the-art 3D inversion for inverting the MT data acquired along a single profile in BC, Canada. The objective of the field work was to reveal the deep mineralization structure which was recovered at the near surface by using resistivity and IP methods performed by third party contractors. We acquired full tensor MT data on 11 sites along the profile that has the strongest IP anomaly. Time series data recorded for average 10 h duration. Remote reference processing was applied to the time series data using a remote site located 50 km southeast of the survey area. We estimated the full impedance tensor as well as the vertical magnetic transfer function. The results of the 2D inversion applied to the MT data were consistent with those of the DC-IP survey. We also applied 3D inversion to the single profile data to compare it with the 2D results and also to evaluate the resistivity distribution around the profile area. In addition to the deep conductor that created the strongest anomaly, we also recovered another deep conductivity anomaly 300 m North of the profile. We tested the accuracy of this anomaly with a sensitivity matrix and also tested the 3D inversion results using a synthetic modeling study. It can be seen from this study that MT is a very important tool for understanding mineralization structure and is better used as an initial method for mineral exploration to localize an area for other geophysical methods such as DC/IP.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-4532
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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