The geology of Vietnam is divided into five structural blocks : Northeast (NE), Northwest (NW), Truongson, Kon Tum 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 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.
[5] The Dong Van Highlands, encompassing total area of more than 574 square kilometers in Hà Giang Province's Quản Bạ, Yên Minh, Đồng Văn and Mèo Vạc districts, could eventually be recognized as a UNESCO Global Geological Park.
UNESCO Vietnam has sent an application based on a recent study which concluded that limestone can be found in 11 layers on 80 percent of the surface of the plateau.