基于受约束磁化向量逆转的桑山岛的分析
Hongbo Liu1,2,3,4, Xiuzhang Li5, Lei Hu1,3,4
1Shandong Institute of Geophysical and Chemical Exploration, Jinan, 250013, Shandong, China.
Scientific reports
|March 7, 2025
概括
一种新的Power型结构自约束磁化向量 (PTSS-MV) 倒置方法准确地绘制了与黄金矿石相关的断裂和侵入性岩石. 这项技术可以确定中国有利的深层黄金矿产化地点.
科学领域:
- 地质物理学 地质物理学
- 经济地质学 地质学
- 矿产勘探 矿产勘探 矿产勘探 矿产勘探
背景情况:
- 黄金矿石是中国重要的战略资源,桑山岛是主要的黄金生产区.
- 岩活动和广泛的裂纹网络对于桑山岛地区的黄金运输和缩至关重要.
- 精确地绘制断层和侵入性岩石的地图对于有效的黄金勘探至关重要.
研究的目的:
- 开发和应用一种新的反转方法,用于高分辨率地质结构与黄金矿产化相关的划定.
- 使用Power型结构自约束磁化向量 (PTSS-MV) 逆转方法,以提高绘制断裂和侵入性岩石的准确性.
- 分析三山岛地区划定地质结构与黄金矿产化之间的关系.
主要方法:
- 开发Power型结构自约束磁化向量 (PTSS-MV) 逆转方法,结合自约束来提高分辨率.
- 将PTSS-MV方法应用于来自桑山岛地区的磁向量逆转数据.
- 使用不同埋藏深度模型的体积比计算方法的准确性验证,显示15%的增加.
主要成果:
- 通过PTSS-MV反转方法,成功地划分了裂和侵入性岩石分布,并且界限更加清晰.
- 在断裂附近确定了高磁化强度的物体,边缘和构造交叉点证明有利于黄金矿化.
- 该方法证明了强度,即使在残余磁化的影响下,也提供了准确的结果.
结论:
- 对于矿产勘探中的高分辨率地质物理解释,PTSS-MV反转方法是有效的.
- 该研究确定了桑山岛地区深度金矿开采的四个有利区域.
- 这项研究为指导未来的矿产勘探和资源评估提供了有价值的数据.
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