Classification of Metallogenic Systems by Structural Dynamic

2019-05-15 11:03 admin
Main Points of Metallogenic System Theory
 
As a term of ore deposit science, the Eighth Metallogenic System has been recorded as early as the 1970s, and it is also common in geological literature in recent years. However, the discussion on its connotation is rare. In the past 10 years, guided by the systematic and historical viewpoints, and based on practical research and comprehensive analysis, the author has put forward five main points of the metallogenic system, including ore-controlling structural system, metallogenic process, ore deposit series and anomalous series formed, and post-metallogenic change and preservation.
 
(1) The metallogenic systems are classified according to the tectonic dynamic system. Structure is an important factor controlling the formation and distribution of metallogenic system. The metallogenic systems can be classified according to the tectonic dynamic system: @ extensional tectonic metallogenic system, rift, extensional basin, metamorphic core complex-magmatic type, SEDEX, VMS and other metallogenic systems; @ compressional tectonic metallogenic system, island arc, continental margin magmatic arc, orogenic belt, nappe structure-CCSD on-line real-time monitoring of gas geochemical anomalies.
 
Long-range effects of the Sumatra earthquake
 
Change process and development trend. Its research measures and means are mainly focused on cross-cutting and integrated research, and the establishment of multidisciplinary global research plans and research centers. The mission covers global (land, sea and air) observation systems, emphasizing the sharing of data and data. National Science Drilling, Isotope Tracing, High Temperature and High Pressure Experiment. Chinese computer simulates geodynamic processes and others.
 
To sum up, the proposition of earth system science is the result of economic globalization and scientific and technological progress, and it is also related to the rise of the idea that human beings should treat the earth well and realize sustainable development. It indicates that a revolutionary breakthrough in earth science is coming. As the integration and integration of various disciplines of geosciences, the earth system science will promote the development of resources, energy, environment, ecology, disasters and other disciplines. The trend of mineralogy aiming at the study of metallogenic regularity will inevitably be inspired by the concepts and methods of earth system science, thus helping to improve the research level of this discipline. Because the metallogenic system is an integral part of the whole earth system, mineral deposit research should be based on the whole earth system science before it can make new and significant progress.
 
Study on 3 Metallogenic System
 
As a special material movement system on the earth, metallogenic system involves the process and mechanism of the dispersal of useful materials to concentrated minerals on the earth. Metallogenic system refers to the whole geological elements controlling the formation and preservation of ore deposits and the dynamic process of mineralization, as well as the series of ore deposits and anomalies formed in a certain space-time domain. It is a natural system with metallogenic function.
 
Earth System, Metallogenic System and Exploration System
 
Faced with the 21st century, there are two major trends in mineral depositology and mining development: (1) globalization; (2) coordinated development of mineral exploitation and environmental protection. The study of ore deposits should be extended to the global background. Based on the brief introduction of earth system and earth system science, the viewpoint that geological emergencies have the dual nature of disasters and resources is put forward. It is emphasized that the metallogenic environment and process should be studied from the background of the earth system, and that the mineralization of ore deposits will be imminent.
 
The study of Genesis and mineralization system has been raised to the level of earth system science, which is a remarkable feature of the development of mineralogy in the new century. The metallogenic system is a distinctive geological system. Five key points of metallogenic system theory are put forward in this paper: (1) dividing metallogenic system into major categories according to tectonic dynamic system; (2) basic metallogenic mechanism of multi-factor coupling and critical transformation; (3) mineralization network composed of ore deposit series and Geological-Geophysical-Geochemical exploration-remote sensing anomaly series; (4) whole process of ore deposit formation, change and preservation; (5) metallogenic system. The dual effect of resources and environment. The metallogenic system theory is of great significance in guiding mineral exploration. The principles and methods of transformation from metallogenic system research to prospecting system are put forward in this paper. Through the overall analysis, spatial analysis, time analysis and historical analysis of the metallogenic system, it is helpful to clarify the prospecting direction and target. The practice of Junuo porphyry copper deposit in Tibet shows that the core problem of prospecting is to analyze, understand and grasp prospecting information. It is necessary to combine the screening of key prospecting information with the analysis of metallogenic geological environment and ore-controlling factors, and to endow all kinds of information with objective and accurate geological connotation, which is the necessary condition for successful exploration and selection. The three-ring map "represents the dialectical relationship among the earth system, metallogenic system and exploration system.
 
New tasks of mineralogy
 
Because the development and utilization of mineral resources need to study the genesis of ore deposits, since mineral deposit geology was separated from geology at the end of the 19th century and became an independent branch discipline, it has gone through several stages, such as data accumulation, disputes of views, theoretical incubation and vigorous development. After more than a hundred years, a relatively complete theoretical system has been formed, and many important achievements have been achieved for discovery. Major contributions have been made to the development of mineral resources.
 
After entering the 21st century, as the theoretical basis of mineral resources exploration, mineral deposit discipline is facing new challenges. On the one hand, the existing mineral resources are decreasing day by day. It is urgent to explore deep hidden deposits, open up new mineral bases and develop new mineral resources. Therefore, it is necessary to broaden the research horizon, explore the relationship between the earth evolution and mineralization in an all-round way, and carry out metallogenic theory research from the perspective of systematization and globalization. The second is to protect the ecology.
 
The environment has become the common requirement of all mankind. How to avoid the damage of mining activities to the environment and realize the coordinated development of mining development and environmental protection has become an urgent major scientific, technological, economic and social problem. Therefore, mineral deposit research is facing globalization

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