Nghia Dan Volcanic Plateau

sopka (bez známé erupce za posledních ~12 000 let), Vietnam, Eastern Asia Volcanic Regions

Kde

Vietnam, Eastern Asia Volcanic Regions

Typ (GVP)

Volcanic field

Poloha

19,450°, 105,530°

This volcanic area is described by Hoang et al. (2015) as follows: "The Nghia Dan volcanic plateau comprises a number of monogenetic volcanoes, forming a lava cover with thickness ranging from several meters to more than 200 m. The volcanoes include Nui Tien (Nghia Son village), Nui Hang (Nghia Lam), Doi Tro and Doi Troc (Nghia My) and Nui Ro (Xuan Binh). The basalts are both massive and porous, but porous lava type is dominant. The massive type sometimes occurs as 4-to-5 sided columnar lavas (KeLui, Nghia Lam)." This area was listed on the IAVCEI Post-Miocene data sheets, which indicated two adjacent areas with basaltic cones in this general location, one with three and the other with four volcanoes. A geological map (Fromagel, 1971) showed six small areas of basalt outcrops, and satellite imagery shows no cones. Hoang et al. (2015) further noted that there was an "Ar-Ar age of 5.9 Ma (C.T. Chi et al., 1998) for a sample collected in the Nghia My village area; and another was dated to 4.2 Ma (Lee et al., 1998)."

Text: Smithsonian Global Volcanism Program.

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