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Abstract:Why did large-scale metallogenesis of metallogenic explosion span a very short period in the course of geological history within some metallogenic provinces? Why did a lot of mineral deposits occur in several s mall areas as metallogenic clusters in the metallogenic provinces during the period of metallogenic explosion ? Where are the metallogenic clusters distributed in the provinces? And how can the metallogenic clusters be easily found? Focused on these important problems, this paper systematically deals with the basic phenomena, characteristics, and some regularities of large-scale metallogenesis or metallogenic explosion. Large-scale metallogenesis usually happened in special tectonic environments with huge amounts of metallogenic substances as supplements, sustained energy systems, excellent channels for transportation and favorable space for accumulation of metallogenic substances. Large metallogenic clusters could be studied through anatomizing the major deposits, establishing their relationship and tracing their genesis based on the investigation of tectonic environment. After detailed geological, geochemical and geophysical studies , we can understand the mineralization processes, set up the metallogenic models and some prospecting indicators. The models and indicators can be used to do prospecting in similar areas within the same or different metallogenic provinces.
keywords:large-scale metallogenesis, metallogenic explosion, cluster of mineral deposits, metallogenic earth dynamics
.1999.A preliminary study of large-scale metallogenesis and large clusters of mineral deposits[J].Mineral Deposits18(4):291~299