Geology of Vietnam
The territory of Vietnam is divided into five structural blocks : Northeast (NE), Northwest (NW), Truongson, Kontum and Nambo. The NE block is a part of the South China plate, in which strata and igneous rocks have been found dating from the Early Paleozoic to the Quaternary. The NW and Truongson blocks are regarded as NW-SE trending Paleozoic folded systems filled with thick (>12000 m) Paleozoic formations. Precambrian strata are widespread in the Red River fault zone and Fansipan range in the NW block, and in the Kontum block. Archean rocks are found only in the Kontum block, which is regarded as a stable massif without Paleozoic sedimentary rocks. The Nambo block is covered with a very thick (>6000 m) sequence of Cenozoic formations deposited in a continental rift. During the Mesozoic many such graben structures were formed and become basins for sedimentation. Igneous activity in Vietnam is divided into five episodes from the Archean to Quaternary. The most important impediments to the description and interpretation of geology in Vietnam are lack of reliable radiometric and structural data, and scarcity of good outcrops.[1]
See also
- Agrogeology
- Digital geologic mapping
- Geologic modeling
- Glossary of geology terms
- International Union of Geological Sciences (IUGS)
- List of fossil sites (with link directory)
- List of geology topics
- List of important publications in geology
- List of minerals
- List of rock textures
- List of rock types
- List of soil topics
- Paleorrota
- Timeline of geology