Discussion Of The Regional Geochemical Information Extraction In The Middle-southern Part Of Da Hinggan Mountains

The study of regional geochemical data information extraction dated back to the1980s, having summarized the earth chemical distribution rule and done the related geological researches. China is rich in regional geochemical data, and the regional geochemical exploration work has been carried out systematically and regularly with wide coverage area (650square kilometers), and this wok provided plenty of parameters (39kinds of analysis elements) and substantial amount of regional geochemical data, which have laid foundation and provided convenience for all kinds of mineral exploration in China. In recent years, many scholars in our country have also started to pay attention to regional geochemical data information extraction, and conducted unprecedented work, including the division of strata boundaries, resource potential evaluation, inference and interpretation of the fracture structure, etc. All of these works have made great contribution to the geological research work in China.By collecting and sorting the regional geochemical data in the mid-southern area of Daxinganling, this paper summarizes the basic geological conditions of the mid-southern area of Daxinganling, in terms of the following aspects:firstly, this paper has summarized the regional geochemical distribution with factor analysis method, concluding that different element associations in the area have their own distribution rules, especially combinations of ore-forming elements; secondly, this paper has discussed the geochemical distribution in different landscape areas, and found that elements in forest-swamp area and semiarid hilly area hold some differences in the geochemical distribution rules, for example, the concentration coefficient of Mo in forest-swamp area is much larger than that in semiarid hilly area, and factor analysis results also shows that different landscape area element combinations also vary; thirdly, this paper tries to analyze the ore-forming geochemical environments, using regional geochemical data to make inference and interpretation of the fracture structure, and inferred10structure areas; finally, two deposits are chosen to explain regional geochemical anomalies, mainly about the preliminary research on ore-forming elements extraction and anomaly denudation extent.At last it is expected that this study could be of some help to the research of geological work.