| 地壳结构与深部矿产资源立体探测技术实验——SinoProbe-03项目介绍 |
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| 关键词:metallogenetic belt ore concentration area crustal structure three-dimensional exploration ore- forming model |
| 基金项目:国家专项“深部探测技术与实验研究”(编号: SinoProbe-03) |
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| Crustal Structure and Three-dimensional Deep Exploration Technology for Mineral Resources: An Introduction to SinoProbe-03 Project |
| In both mineralization study and resources exploration, the detailed understanding of the depth of the earth is very important. The structures, materials and dynamic processes of the Earth’s crust and the upper mantle are the first-order controlling factors in the formation of mineral deposits, and also constitute the foundation of the regional metallogenetic theory. The composition and structure of the deep part(0～10 km)of the ore concentration area, especially the spatial distribution and relationships of faults, strata and magmatic rocks are direct factors controlling the formation of endogenetic mineral deposits and govern the migration, enrichment and precipitation of the ore-forming fluids. The fine structures of the deep part of the orefield and ore district constitute the crux for finding out deep extension of the ore-hosting and ore-controlling structure and making deep ore prognosis, thus being of great significance in guiding deep ore-prospecting work. For the purpose of making a thorough study of the structural background of mineralization in China’s mainland and the ore-forming environment of typical ore concentration areas as well as expanding ore-prospecting space in the depth, China has started the special techno-logical project “Deep Exploration Technology and Experimentation (SinoProbe)”. Under this special project, the project “Three-dimensional Deep Exploration Technology and Experimentation for Mineral Resources” has been set up. The main targets and tasks of this project are as follows: Select Nanling, middle and lower Yangtze River metallogenetic belt and typical ore concentration areas (Tongling, Luzong, Yudu-Ganxian) in eastern China to conduct three-dimensional exploration at three levels ((40～50 km, 10 km and 2 km)as well as drilling test for shallow ore-indicating anomalies of 2 km so as to reveal deep structural background and dynamic process of the typical ore concentration area and their restricting role in the formation and evolution of the metalogenetic system; Depict structural framework and material composition of the ore concentration area in the depth range of 10 km so as to disclose the structure of the metallogenetic system; Trace deep extensions of main ore-hosting and ore-controlling structures and ore-bearing intrusive bodies so as to extend the depth of resources exploration and indicate ore-prospecting orientation in the depth; Carry out three-dimensional geophysical exploration of typical ore deposits so as to study deep ore-controlling regularity, establish deep metallogenetic model and conduct deep ore prognosis; Perform drilling to the depth of 2000 m so as to make direct verification of important anomalies and ore-forming targets, reveal vertical variation regularity of metals in the shallow part of the Earth’s crust and estab-lish the scale for deep exploration geophysical interpretation, and deepen the understanding of metallogenic regu-larity; Through demonstration study, form technological plan for deep resources exploration at three levels, solve a number of technological thorny problems, establish research base areas, train the research group and acquire model achievements, so as to lay the technological foundation for the successful implementation of the “Earth’s Crust Exploration Engineering”. |
| LÜ Qing-tian,CHANG Yin-fo,SinoProbe-03 Team.2011.Crustal Structure and Three-dimensional Deep Exploration Technology for Mineral Resources: An Introduction to SinoProbe-03 Project[J].Acta Geoscientica Sinica,32(S1):49-64. |
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