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The discussion of primary diamonds exploration in Northern Jiangsu Province |
ZHANG Qi, ZHOU Qizhong, WANG Bo, WANG Guoqiang, FENG Xuezhi, LUO Yue |
No.5 Geological Team of Jiangsu Geology and Mineral Bureau, Jiangsu Xuzhou 221004, China |
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Abstract The second round of diamond prospecting in Northern Jiangsu Province has lasted 8 years, without discovery of ore-bearing kimberlite or diamond deposits. Based on the actual prospecting in Northern Jiangsu and combined with the latest diamond ore-forming theory and advance, the authors in this paper put forward and discuss several issues restricting the prospecting of primary diamonds in Northern Jiangsu to further explore the prospecting direction. The results show the primary target of primary diamond prospecting in Northern Jiangsu Province is Paleozoic kimberlite, which is located in Western Tanlu fault zone. The kimberlite of this period may be covered under the nappe due to the existence of the Xusu arc structure. Although there is no genetic relationship between Tanlu fault zone and Paleozoic kimberlite rock, the rifted red basin controlled by its development in the extension stage may cause the Paleozoic kimberlite to be covered under the Cretaceous. The future prospecting direction should focus on the Chenggang uplift in the Tan-Lu fault zone, and the breccia-bearing basic rocks on the west side of the Tanlu fault zone are also worthy of attention. During the ore prospecting and exploration, the geological and topographical conditions of the work area, the adaptability and limitations should be fully considered to select the combination of exploration methods according to local conditions.
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Received: 06 November 2021
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