As a Precambrian geologist, he realized the importance of isotope chronology and isotope geochemistry for Precambrian geological research, and gave great attention and support. He believes that it is impossible to further develop Precambrian geological research without the cooperation of isotope geology, especially advanced isotope dating technology. During his tenure as the director of Isotope Geology Research Office of Tianjin Institute of Geology and Mineral Resources, he sent technicians to study abroad, introduced advanced dating methods such as UPb dilution method of single zircon, guided the application for natural science funds, and even took out his own project funds as the start-up funds for experiments. It should be said that he has made great contributions to the development of isotope geology laboratory of Tianjin Institute of Geology and Mineral Resources. He made great efforts to introduce the advanced ion probe mass spectrometer into China, supported the Isotope Chronology and Geochemistry Laboratory of Guangzhou Institute of Geochemistry to the best of his ability, and contributed to the establishment of the youth laboratory of this discipline. Through long-term practice, he analyzed, compared and evaluated several dating methods, and discussed their applicability and application conditions in Precambrian geological research from the geological point of view, which is enlightening to Precambrian geologists and isotope geologists. There are 7 monographs (co-authors) and about 120 academic papers in Chinese and English.
1: Sun Dazhong and Shi Shimin, Stratigraphy and Structure of Pre-Sinian System in Zhongtiaoshan, Shanxi, Journal of Geology,1959,39 (3).
2. Zhongtiaoshan Copper Mine Geological Writing Group, Zhongtiaoshan Copper Mine Geological Publishing House, 1978.
What are the main geological and geochemical characteristics of Archean greenstone? Gneiss sequence in North China, Spec? A pub? Australia, 198 1, 7.
4. Sun Dazhong and Wu Changhua, where is the greenstone belt in China? Geological bulletin of science and technology,1982,7.
5. Sun Dazhong, editor-in-chief, Early Cambrian Geology of Jidong, Tianjin Science and Technology Press, 1984.
6. Cheng, Sun Dazhong, Wu Jiashan, Great Cycle of Early Precambrian Platform in China, Journal of Geodynamics, 1984, 1.
7. Sun Dazhong, Lu Songnian, Re-division of Precambrian in China, Precambrian Studies,1985,28.
8. Sun Dazhong, Lu Songnian, Proterozoic tectonic evolution of North China platform, Journal of Chinese Academy of Geological Sciences, 1987, 16.
9. Hu, Sun Dazhong, Metallogenesis and Evolution of Early Proterozoic Copper Deposits in Zhongtiaoshan, Journal of Geology,1987,61(2).
1 1: Sun Dazhong, Discussion on Stratigraphic Division of Early Cambrian High-grade Metamorphic Rocks and Greenstone Zones, Essays on Compilation and Research of Metamorphic Geological Maps in China, First Series, Geological Publishing House, 1987.
12: sun Dazhong, Zhai, discussion on some problems of early Precambrian crustal evolution in Gubei platform, collection of essays on compilation and research of metamorphic geological maps in China, first series, Geological Publishing House, 1987.
13: Sun Dazhong, Tectonic and Geochemical Development of Archean and Proterozoic Active Zones in Eastern China, Progress of Earth Science in China, (1985 —— 1988) —— Paper to the 28th IGCGeolPublHouse,1988,3.
14? Sun Dazhong, Wang Kuiyuan, Wang Junlian, Yang Chunliang, Zhao Fuming, Study on Archean Gold-bearing Rock Series in East Hebei, Compilation of Regional Metallogenic Conditions of Major Gold Types in China, 2: East Hebei, Geological Publishing House, 1989.
15: Sun Dazhong, Hu, Zhao Fengqing, Condi, K? c？ What is the origin of late Archean and early Proterozoic rocks and associated deposits in East Zhongtiaoshan? Central China, Precambrian studies,1990,47,3.
16: Sun Dazhong, Precambrian geochronology discussion, regional geology of China,1990,4.
17: Sun Dazhong, Hu, Precambrian chronotectonic framework and chronocrustal structure of Zhongtiaoshan, Geological Publishing House, 1993.
18: sun Dazhong, sustainable development and the possibility of its implementation in Guangdong province, special report on "establishing a research society for developing new advantages in Guangdong province", 1994.
19: sun Dazhong, Zhu bingquan, Li, Wang, continental geochemical dynamics, 265438+scientific development trend in the early 20th century, Science Press, 1996.
20. Sun Dazhong, Sustainable Development-A New Concept of Epoch Significance, Academic Research, 1996, 1.
2 1: Sun Dazhong, Pearl River Delta resources, environment and sustainable development, Pearl River Delta economy, 1996, (1 ~ 2).
22. Chronology, accretion and tectonic framework of Precambrian continental crust in eastern China, edited by Sun Dazhong, Li, Qiu Huaning and Wang Hongzhe. 30th International Geological Congress, VSP, 1997, 1.
23. Jin Wenshan, Sun Dazhong, Deep Crustal Structure and Its Evolution in South China, Geological Publishing House, 1997.
24. Sun Dazhong, Archean, China, Geochemistry,1998,4. Besides Zhongtiaoshan and Jidong, Sun Dazhong's research on Precambrian geology has spread all over the country. He covers a wide range of related fields and has the advantage of long-term systematic research. He has unique views on many important problems of Precambrian geology, such as Precambrian era and stratigraphic division, greenstone belt, felsic gneiss, early crustal growth and evolution, etc.
He summarized the tectonic framework of the Precambrian continental crust in eastern China, and thought that the North China block was mainly composed of Archean basement. The oldest discovery age was 3800Ma, and the most important crustal growth period was 3000-2800Ma. The crust was reconstructed in late Archean and early Proterozoic respectively, and finally cratonization occurred during the Lvliang movement. The oldest rock in the Yangtze block is the Late Archean (2800—2500Ma), which represents the continental core of the block. It grew rapidly and was extensively transformed from the late Early Proterozoic to the Middle Proterozoic, forming a continental basement. The basement rocks of Cathaysian block belong to Early Proterozoic (-1800 Ma), and the Mesoproterozoic crust grows on a large scale, and there may be unexposed Late Archean crust. The Cathaysian block collided with the Yangtze block during the Jinning movement, and the ocean and continental island arc proliferated to the southern margin of the Yangtze block, accompanied by large-scale crustal remelting and the addition of some mantle materials. The collision between the North China block and the Yangtze block may have occurred in Caledonian or Indosinian. According to the geochemical characteristics of China's early crust, such as being rich in large radius, pro-MagmaElemental and lacking high-intensity field elements, he concluded that the Archean crust was a plane-plate-bottom supported growth model, while the early Proterozoic crust was a point-plate-bottom supported growth model, that is, the early crust mainly grew vertically, similar to Australia and Africa. The crust of North China Craton has a high maturity and a long and continuous evolution time. Due to the high content of heat-generating elements (K, U, Th), strong and complex metamorphism and tectonic activities, the Archean crust in China underwent a strong and lagging transformation, which was obviously different from that in the western northern hemisphere and the southern hemisphere. The early Proterozoic active belt is unique, and its early geological and metallogenic characteristics are similar to those of Archean greenstone belts abroad, but the time lags behind. In the later period, some characteristics of foreign Meso-Proterozoic geosynclines or rifts were similar, and super-large deposits were also formed, but the time was advanced. According to the characteristics of Precambrian geology and metal mineralization in China, he made many suggestions to his superiors on Precambrian geological research and prospecting strategy.