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Using Magnetic Method for the Identification of Anomalies Due to Kimberlite Pipes, Luando Area, Bié, Angola

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Document pages: 11 pages

Abstract: One of the measurementgeophysical methods to investigate kimberlite pipes is by using the magneticmethod. The acquired field data in this study uses two proton-precession magnetometers for the mapping of magneticanomalies due to kimberlites. Three different magnetic maps are obtainedfrom the result of total magnetic field data processing on Oásis Montajsoftware programme. These maps include magnetic anomaly maps throughstatistical analyses, total magnetic field intensity map and map of the analyticsignal. Based on the interpretation of these maps a structure is identifiedwith SWW-NEE directions in which magnetic signatures that indicate the presenceof kimberlite pipes are observed. As the interpretation of the magneticanomalies is a complicated process due to their dipolar nature, the analyticsignal is generated, where is possible to observe the typical shape of theseanomalies.

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