CHARACTERISTICS OF SECONDARY HALOS AND DISPERSION PATTERNS OF AU IN AFRICAN TROPICAL GRASSLAND LANDSCAPE
ZUO Li-bo1,2, WANG Ming-qi2, WANG Jie1, XU Yang2, YU Reng-an1, LI Xiang3
1. Tianjin Center of China Geological Survey, Tianjin 300170, China;
2. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
3. Hubei Institute of Geological Survey, Wuhan 430034, China
The Pala area is the most important mining area for alluvial gold in Mayo Kebbi Region, Chad. Many companies tried to find rock gold in this area; nevertheless, they all failed to find any good ore bodies in spite of lots of trenching and drilling work. To illustrate the formation process and origin of gold anomalies, the authors conducted geochemical exploration of gold mines in Pala with the purpose of summing up the characteristics of secondary halos of Au in African tropical grassland landscape. Vertical soil profile measurement was also made to analyze the geochemical behavior of Au during pediplanation so as to explain the origin of gold anomalies. The results obtained by the authors are of directive significance for gold exploration work of China's companies in Africa under the same landscape condition.
左立波, 汪明启, 王杰, 徐洋, 俞礽安, 黎湘. 非洲热带草原景观区金的次生晕特征及分散模式[J]. 物探与化探, 2013, 37(4): 573-579.
ZUO Li-bo, WANG Ming-qi, WANG Jie, XU Yang, YU Reng-an, LI Xiang. CHARACTERISTICS OF SECONDARY HALOS AND DISPERSION PATTERNS OF AU IN AFRICAN TROPICAL GRASSLAND LANDSCAPE. Geophysical and Geochemical Exploration, 2013, 37(4): 573-579.
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