| Main results | - Theoretical results:
+ Together with Component 1, a geochemical baseline data set was established for 5 types of samples: topsoil, subsoil, stream sediment, streamwater, and groundwater with analyses such as major and trace elements, pH, Ec, TDS, anions, cations, TC, OC,…. This study provides basic geochemical data for many filelds as geology, agriculture, mineral exploration, environment, human health,…
+ Among the statistical methods, mMAD followed by TIF, Q95, Q98 were found to be suitable for identifying anomalous sites, while mMAD is considered as most appropriate to estimate the geochemical baseline value of the study areas.
+ PCA and cluster analysis help identify dominant geochemical types in different regions. These are the main methods in multivariate data analysis. Specifically, some element associations identified as REE-Th-U, Cu-Mo, Fe-Ti-V-Cr-Co-Ni. These elemental associations are closely related to bedrock as alkaline and sub-alkaline rocks, metamorphic rocks, metamorphic sediments,…. and related to ore deposits.
+ Establishing a set of single-element and multi-element maps for three provinces of Lai Chau, Lao Cai, Ha Giang as well as the key area of Bat Xat district, Lao Cai.
+ In addition to factors such as terrain, geomorphology, climate, weather, the elemental content of the samples is strongly influenced by the lithology in the study area.
+ The Component’s database is demonstrated through publications and suggestions, proposing directions for using multi-purpose geochemical baseline in improving and enhancing the efficiency of agricultural land, supporting land use planning, studying carbon storage in soil, assessing water quality, discovering mineral resources, studying weathering and paleoclimate processes, assessing the impact of elements on human health, and applying research on the causes of landslides, land subsidence,…
- Applied results:
The systematically established multi-purpose geochemical baseline can be used for: (i) Assessing the current state of the environment; (ii) searching for minerals, especially deep-seated minerals; (iii) agriculture and forestry; (iv) medical geology; (v) determining the geochemical baseline as a legal basis for environmental risk assessment,… |
| Products of the project | - Scientific papers in referred journals (list):
+ Article(s) in qualified SCI-E Journals:
(1) Pham Thi Dung, Tadashi Usuki, Tran Trong Hoa, Nguyen Hoang, Masako Usuki, Pham Minh, Anh Thi Quynh Nong, Y Viet Nguyen, Pham Trung Hieu, 2023. Emplacement ages, geochemical and Sr – Nd – Hf isotopic characteristics of Cenozoic granites in Phan Si Pan uplift, Northwestern Vietnam: petrogenesis and tectonic implication for the adjacent structure of the Red River, shear zone. International Journal of Earth Sciences (2023) 112:1475–1497. https://doi.org/10.1007/s00531-023-02307-4
(2) Thu Thi Do, Pham Thi Dung, Tuan Anh Tran, Luong Duc Le, Hai Dinh Vu, Tra Thi Thu Doan, Dao Quang Le, Hien Trong Tran, Dat Ngoc Pham, Lien Thi Nguyen and Dung Thi Phuong Le, 2024. Hydrogeochemical characteristic and water quality index of groundwater and streamwater at Nam Mu River basin, Lai Chau province in northwest Vietnam. Enviromental Research Communications, Volume 6, Number 1. DOI 10.1088/2515-7620/ad201d
(3) Tran Tuan Anh, Le Duc Luong, Renat B. Shakirov, Nadezhda S. Syrbu, Pham Thi Dung, Pham Thanh Dang, Nguyen Thi Lien, Nguyen Xuan Qua, Nguyen Thi Thu, Vu Dinh Hai, Vu Hoang Ly, Natalia S. Lee, Anna L. Venikova, 2024. Geochemistry of stream waters of the Lo river catchment, Ha Giang province (Northern Vietnam). Lithology and Mineral Resource, Vol 59, No. 3, pp. 340-356
(4) Anh Tuan Tran, Dung Chi Nguyen, Dung Thi Pham, Tha Van Hoang,
Dang Thanh Pham, Qua Xuan Nguyen, Ha Van Vu, Tuan Minh Dang, Tuan Dang Tran, Tai Trong Nguyen, Tra Thu Thi Doan, Thang Sy Cu, Quan Tran Dang, Cong Quoc Tran, Lien Phuong Thi Pham, 2024. Geochemical constraints on weathering and provenance of stream sediments from Bat Xat, northwestern Vietnam. Applied Geochemistry 177 (2024) 106235. https://doi.org/10.1016/j.apgeochem.2024.106235.
+ Article(s) in National Scientific Journals:
(5) Lien Thi Nguyen, Dung Thi Pham, Anh Tuan Tran, Qua Xuan Nguyen, Dang Thanh Pham, Tra Thu Thi Doan, Tuan Minh Dang, Hien Trong Tran, 2024. Study on topsoil chemical characteristics in Bao Thang district, Lao Cai province for agricultural
development. Journal of Mining and Earth Sciences Vol. 65, Issue 3 (2024) 29 - 43.
+ International Conference (s):
(6) Pham Thi Dung, Tran Tuan Anh, Tran Minh Tien, Pham Thanh Dang, Nguyen Thi Lien, Nguyen Xuan Qua, Doan Thu Tra, Vu Hoang Ly, Dang Minh Tuan, Tran Trong Hien, Tran Dang Tuan, Nguyen Trong Tai, 2024. Establishing geochemical baseline and threshold for major and trace elements in Lao Cai agricultural soil. Abstract book, 16th international conference of the East and Southeast Asia Federation of Soil Science Societies. March 26-29, 2024, Convention Center Thai Nguyen University, Vietnam.
(7) Pham Thi Dung, Tran Tuan Anh, Nguyen Thi Lien, Pham Thanh Dang, Nguyen Xuan Qua, Doan Thi Thu Tra, Do Thi Thu, Dang Minh Tuan, Vu Hoang Ly, Tran Dang Tuan, Bui Thi Sinh Vuong, Tran Trong Hien, Nguyen Trong Tai, Cu Sy Thang, 2024. Chemical weathering of bedrock revealed by agricultural soil of Lao Cai province, Vietnam. The Conference on Earth Sciences and Sustainable Development – CESD 2024, The 14th Scientific conference of the University of Science, VNU-HCM.
- Patents (list):
- Technological products (describe in details: technical characteristics, place): | No. | Product Name | Quantity | Storage Location | | 1 | Samples of all types (topsoil, subsoil, streamwater, groundwater, stream sediments) have been processed for analysis | 1 | Institute of Geological Sciences | | 2 | Data set for measuring environmental parameters (pH, Eh, T,...) | 1 | Institute of Geological Sciences | | 3 | Results of TC, OC in soil; anions and cations in water | 1 | Institute of Geological Sciences | | 4 | A set of single-element and multi-element map at scale 1:250,000 with explanatory notes | 1 | Institute of Geological Sciences | | 5 | A set of single-element and multi-element map at scale 1:50,000 with explanatory notes | 1 | Institutte of Geological Sciences | | 6 | Recommendation report | 1 | Institute of Geological Sciences | |
