After many years of study, Prof. Dr. Nguyen Hoang from the Japan National Science and Technology Institute found that volcanic activity on the island of Ly Son occurred in two main periods The first was approximately 10-11 million years ago and the second was about a million years ago (coinciding with the volcanic activity in Ba Lang An and Binh Chau).
According to Prof. Nguyen Hoang, the volcanic eruption on the island of Ly Son varied, from the deep to shallow sea and on land. Each eruption formed lava layers of different thickness, which are still intact until today. This can be considered a “natural museum of volcanic activity” that is very rare in the world.
Experts said that the volcanic island of Ly Son was formed during a robust and complex tectonic environment, with litho-logical composition, mainly basalt rock, with geochemical nature diversity.
Findings of the Vietnam Archaeology Institute showed that Ly Son island district was formed by the ruins of the activities of volcanic eruptions millions of years ago. The island has a volcanic terrain that occupies 70% of the area. There are many relics created by volcanic eruptions like Cau Cave, Hang Pagoda, Duc Temple, the archway … that have great value for tourism.
Volcano tectonic activity created the unique Hang Pagoda on the seaside of Ly Son Island. In addition to the volcano onshore, experts also found many volcanic sediments with different sizes on the seabed.
Quang Ngai province has allowed the Department of Culture, Sports and Tourism in coordination with a private company – Doan Anh Duong – to invite experts to compile dossiers of the wreck graveyard in the seabed of Binh Chau, which will be submitted to the Ministry of Culture, Sports and Tourism to consider as national relic site.
Also, they will compile dossiers of Binh Chau to seek recognition as a national geological park. Quang Ngai will also seek recognition of Ly Son district as a special national monument.
 The sedimentary volcanic cliffs are in Bai Sau, An Binh Commune, Ly Son District, Quang Ngai Province. They look like two giant arms reaching out to the sea.
  Dun cliff, the relic of volcanic activity in An Binh commune, Ly Son island district.   Tourists take selfies at the volcanic sedimentary rocks in An Binh commune (Little Island), Ly Son island district.   Many young couples go to Ly Son island district to take wedding photos, saving the beautiful moments at the cliffs.  The volcanic sedimentary cliffs which look like a dinosaur stretching for kilometers in Dong Ho village, An Hai commune.  A volcano sedimentary rock on the beach of Ly Son.  |
| Photo: VNE |
Million-years-old volcano sedimentary cliffs on Ly Son Island
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