tailieunhanh - Đặc điểm nguồn gốc trầm tích khu vực tây nam biển Đông

Bài viết trình bày kết quả phân tích tổ hợp khoáng vật sét từ các lỗ khoan ở khu vực phía tây nam biển Đông trong các nghiên cứu trước đây được tổng hợp và tái xử lý sâu hơn để đánh giá đặc điểm nguồn gốc trầm tích của khu vực này. | Journal of Mining and Earth Sciences Vol. 61 Issue 5 2020 11 - 19 11 A review on the characterization of sediment provenance sources in the southwestern East Sea Sang Nhu Pham 1 Bat Van Dang 2 Hiep Huu Nguyen 1 Chi Kim Thi Ngo1 Binh Van Phan 1 1 Faculty of Geosciences and Geoengineering Hanoi University of Mining and Geology Vietnam 2 Vietnam Union of Geological Sciences Vietnam ARTICLE INFO ABSTRACT Article history Characteristics of sediment provenance in the southwestern East Sea The Received 19th Aug. 2020 southwestern East Sea is a significant area for investigating marine Accepted 03rd Sept. 2020 geology and it has drawn many attentions from geoscientists. In this Available online 31st Oct. 2020 study clay mineral assemblages of some sediment cores derived from the Keywords southwestern East Sea which were conducted in previous studies were Chemical weathering used to review characterization of sediment provenance in this area. Clay mineral Sediment compositions in the southwestern East Sea consist mostly of smectite 11 58 illite 19 45 and less abundance kaolinite East Sea 11 29 chlorite 10 25 . Based on clay mineral assemblages Mekong River provenance analysis indicates that the Mekong River can mainly Physical weathering transport terrigenous sediments to the southwestern East Sea. Illite and Sediment provenance. chlorite have likely been reduced by physical weathering of the metamorphic and granitic rocks in the Tibetan Plateau. Kaolinite has primarily been released by chemical erosion of the K-feldspar rich bed rocks in the middle part of the Mekong Basin. However smectite has been basically derived by chemical weathering of the parent basaltic rock in the middle to lower reaches of the Mekong Basin. Copyright 2020 Hanoi University of Mining and Geology. All rights reserved. _____________________ Corresponding author E - mail phamnhusang@ DOI 5 .02 12 Tạp chí Khoa học Kỹ thuật Mỏ - Địa chất Tập 61 Kỳ 5 2020 11 - 19 Đặc .