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Geological Mapping Division. Study of the characteristics of geology and mineralization, the alteration of the country rocks indicated that the wolfram (sheelite) mineralization in Suối Ngần - Quảng Ngần deposit
Felsic magma samples were collected from the Tú Lệ, Phu Sa Phìn and gabro from the Nậm Chiến complexes for study on petrography and their emplacement time by zircon U-Pb isotope
Phu Quy volcanic island is formed following at least two major volcanic eruptions at ca. 2.64 Ma and 1.32
The Red River Delta is one of the largest mega delta within the SE Asia. Quaternary sediments of this delta have been derived from various important
In Vietnam and adjacent areas, Early Devonian to Early Cretaceous terrestrial plant fossils were found in many places
: The Cao Bang - Tien Yen (CB-TY) fault zone, Tien Yen - Lang Son (TY-LS) section is about 100 km long, running in the NW-SE direction, the northeastern part of the Red River fault zone
Diên Bình complex is made up of gabrodiorite, diorite, granodiorite and granite. Most of rocks are medium to coarse grain and display gneissic texture.