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Phân vùng địa chất theo thuật toán đa dấu hiệu trường dị thường trọng lực khu vực trung tâm Việt Nam

Bài báo trình bày các kết quả nghiên cứu ứng dụng tổ hợp phương pháp xác suất-thống kê, tương quan phổ mật độ năng lượng, lọc hai chiều trong cửa sổ trượt dạng động, gradient ngang đầy đủ và phương pháp truy tìm trục dị thường để xử lý, luận giải tài liệu trường dịthường trọng lực Bughe khu vực trung tâm Việt Nam. | Journal of Mining and Earth Sciences Vol. 62 Issue 5 2021 43 - 54 43 Geological region by multi-signal method of gravity anomaly data in central area of Vietnam Hong Thi Phan 1 Petrov Aleksey Vladimirovich 2 Phuong Minh Do 3 Luu Truong Nguyen 3 1 Facultyof Oil and Gas Hanoi University of Mining and Geology Vietnam 2 Facultyof Geology and Geophysics of Petroleum University of Geology and Exploration named Sergo Ordzhonikidze Moscow Russia 3 Geophysicsl Division General Department of Geology and Minerals Hanoi Vietnam ARTICLE INFO ABSTRACT Article history This paper presents the research results of applying the combined method Received 11th May 2021 of probabilistic statistical approaches energy density spectral Accepted 16th Aug. 2021 correlation two-dimensional filtering in dynamic sliding windows full Available online 31st Oct. 2021 horizontal gradient and heterogeneous axis tracking method to process Keywords and interpret the Bughe gravitational anomaly field in central area Bughe gravitational Vietnam. The calculation results have shown the superiority of the two- anomaly dimensional filter in dynamic sliding windows compared to the filters in fixed windows in GEOSOFT software GMT software. According to the COSCAD-3D physical characteristics of the field the study area was divided into 13 Multi-sign method homogeneous classes this result is consistent with the geological-tectonic Statistical probability Two data in the area. In the north and northeast the stabilized rock layers are dimensional filtering. characterized by homogeneous layers that extend in the northwest- southeast direction. In the south and southwest there is complex tectonic activity characterized by high density rock layers overlain by low density rock layers in each fault band with different directions of development. This suggests that there may be deeply buried mineral deposits of magmatic origin in central area Vietnam. Copyright 2021 Hanoi University of Mining and Geology. All rights .