矿产预测中成矿信息的提取和强化

成矿信息的提取是矿产预测的重要手段,其方法的有效性直接影响到预测成果的可靠性。在成矿规律研究的基础上,有意识地干预模型的构成,突出与成矿有关的信息;抑制某些成矿意义不明显和属干扰的信息,有目的地使模型向反映成矿信息的方向逼近,提高模型与矿床实际赋存地质环境的吻合程度,均是成矿信息提取和强化的内涵。本文从研究实践中总结了先验约束模型和非先验约束模型的强化方法,在新疆阿勒泰地区的地质－找矿工作中已取得

THE ABSTRACTION AND ENHANCEMENT OF MINERALIZATION INFORMATION IN PROGNOSIS OF MINERAL RESOURCES

The extraction, concentration and enhancement of information about miner-alization are a key technological problem im prognosis of mineral resources. It callsfor consciously meddling in the construction of the metallogenic model, givingprominence to the information related to mineralization and prognosis, controllingor eliminating some information that has no obvious mineralization significanceor interferes with prognosis,promoting the prognostic model to approximate towhat can reflect the mineralization information and promoting the coincidencebetween the model and the actual geological setting of mineral deposits accordingto our knowledge of the metallogeny of mineral deposits and adhering to certaincriteria for prognosis. Proceeding from the study of the metallogenic model andore-controlling geological indications, this paper suggests that the new techniqueof information enhancement should be applied in prognosis of mineral potential.Some examples of the enhancement method for prioriconfined models and non- priori-confined models are given in the paper. Some,mineral deposits of commer-cial value have been found in the ore target areas determined by using thismethod;good ore prospecting results have been achieved. The authors expoundthe method, steps and geological prerequisites of application of the "informationenhancement" technique. Practice has proved that the enhancement of mineraliza-tion information is not only conducive to extracting useful information but alsostrengthening an organic combination of the metallogenic model with the pro-gnostic model of mineral deposits, thus raising the effectiveness of mineral pro-specting.