摘要
尚未发现的矿产资源潜力的定量预测一直是资源评价的重要工作,成矿地质体体积法预测资源量是对传统体积资源量估算方法的改进。假设相同大小的成矿地质体有相同的预测资源量,依据控制区(模型区)内成矿地质体的体积与资源总量计算含矿系数,运用相似类比法外推含矿系数到预测区,然后通过估算预测区成矿地质体的体积去预测该区潜在的资源量。其中成矿地质体范围的圈定是该方法的关键步骤,它需要盆地成钾理论的指导,充分考虑岩相古地理、沉积建造构造,含矿岩系等厚线、矿层分布等因素。该方法试验性的应用到了兰坪—思茅盆地钾盐资源量的预测。
Quantitative estimation of undiscovered mineral resource has been an important step in resource assessment. The resource estimation method by metallogenic geological bodies is the improvement of the traditional volumetric estimation. The authors infer that the mineralized geological bodies of the same size have the same quantity of resources. Ore-bearing coefficient of the control area （the model area） can be calculated by two parameters, i.e., the volumes of the metallogenic geological bodies and the total resource. Through extrapolation by similar analogy, we can estimate the resource of the prognostic area using the volumes of metallogenic geological bodies and ore-bearing coefficients. The delineation of the mineralized geological body plays a decisive role in the method. For potash bearing geological bodies, it needs the guidance of the theory for potash formation in the basin. Such factors as the lithofacies paleogeography, the structure of the sedimentary formation, the stratigraphic isopach and the seam distribution are also well considered, The method was applied to estimating potash resource in the Lanping-Simao basin.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2013年第5期617-622,共6页
Acta Geoscientica Sinica
基金
国家"973"计划项目"中国陆块海相成钾规律及预测研究"(编号:2011CB403000)资助
关键词
盆地成钾理论
资源量预测
成矿地质体
兰坪-思茅盆地
theory for potash formation in the basin
resource estimation
metallogenic geological body
Lanping-Simao basin
