河南省Mo矿区域成矿模式与综合信息预测模型

对河南省不同时期Mo矿的成矿地质背景和成矿特征进行了归纳，建立了主要类型Mo矿成矿模式，总结了成矿规律；进而通过综合信息数据处理，讨论了不同类型Mo矿预测要素的提取，建立了符合地质概念模型的斑岩-矽卡岩型Mo矿综合信息预测模型。研究表明：占绝对主要地位的早白垩世Mo矿受控于滨西太平洋构造域东秦岭-大别陆内岩浆弧，强烈的岩浆活动造成浅源浅成快速冷侵位的粗粒花岗岩大岩基与控制Mo矿的深源浅成热侵位细粒花岗岩-花岗斑岩-侵入角砾岩小岩体在同一剥蚀平面紧密共生，不仅存在“小岩体成大矿”的规律，而且存在大岩基边缘和旁侧成大矿的规律。相同特征的矿产因所处地质背景的不同而预测要素有所差异，但通常可以根据剩余重力低-ΔT化极正磁异常及其梯度模来拟合岩体与接触带，以Mo主成矿因子得分正异常和Pb-Zn-Ag主成矿因子得分负异常确定斑岩-矽卡岩型Mo（W）矿的成矿范围。通过CSAMT-SIP-裂隙地球化学联合剖面测量可有效预测隐伏矿体部位。

Regional Metallogenic and Synthetic Information Prediction Models of Mo Deposits in Henan Province, China

Based on the metallogenic geological backgrounds and mineralization characteristics of Mo deposits of different periods in Henan Provence, the metallogenic models have been established and regularities of metallogenesis have been summarized for main types of Mo deposits. The synthetic information prediction models of porphyry-skarn Mo deposits corresponding to conceptual geological model have been established based on the data processing of synthetic information and the discussion about the forecast factors of different types of Mo deposits. The most important molybdenum deposits of Early Cretaceous belongs to offshore Western Pacific tectonic domain and are controlled by the East Qinling-Dabie intracontinental magmatic arc. Because of strong magmatic activity, the large coarse-grained granite batholith of shallow-derivation, hypabyssal and fast tectonic emplacement and fine-grained granite, granite porphyry and intrusive breccia of slightly deep-derived, hypabyssal and thermal emplacement occur in the same level of denudation. Not only  small intrusions contain large deposits, but also large deposits at the margins or sides of big batholiths. Although the prediction variables are slightly different for same type of mineral resources at different tectonic settings, usually the low residual gravity, positive magnetic anomaly of ΔT reduction-to-the-pole and gradient mode can be used to delineated the contact zone and the positive anomaly of the Mo metallogenic factor score and the negative anomaly of the Pb-Zn-Ag metallogenic factor score can be used to define metallogenic range of the Skarn-Porphyry Mo-W deposits. The position of concealed ore body can be effectively predicted by the comprehensive profile survey of CSAMT-SIP-crack geochemistry.