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Article by Dong C
Article by Yang Z
Article by Xie T
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New application of dual-frequency IP instrument in a copper-molybdenum mine of Mudanjiang
DONG Chuan-tong, YANG Zeng-wu, XIE Tian-kun
No. 702 Team of Nonferrous Metal Geological Exploration Bureau of Heilongjiang Province, Mudanjiang 157020, Heilongjiang, China
Abstract: In order to solve the interference problem of carbon-bearing strata to the geophysical IP, the authors studied the high and low frequency response of carbon-bearing sericite phyllite and ore (granodiorite porphyry containing a large number of metal sulfide) and found that the ratio of carbon-containing sericite phyllite ranges from 0.84 to 1.21, whereas the ratio of the ore (granodiorite porphyry containing a large amount of metal sulfide) varies from 0.91 to 1.87. The arithmetic means of the two ratios are 1.07 and 1.43, respectively, indicating that the abnormalities caused by the ore can be distinguished. The profile test also achieved the same effect. The application of this method solves the geophysical blind spot problem in peripheral prospecting and provides reference for geophysical exploration in similar geological conditions.
Keywords: copper-molybdenum mine   IP intermediate gradient device   carbon-bearing strata   dual-frequency IP   high and low frequency response  
�ո����� 2018-10-19 �޻����� 2019-07-19 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2019.03.023
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