The Early Cretaceous rhyolite column group along the coast of Sai Kung and several nearby islands, named Liang Chuan Wan Formation, was included in the Hong Kong Geopark in 2009. The Agriculture, Fisheries and Conservation Department announced on Saturday (22nd) that it is located in the Hong Kong Geopark. The early Cretaceous rhyolite column group, the hexagonal volcanic rock column of the Liangchuanwan Formation, was selected as one of the first 100 geological heritage sites of the International Union of Geological Sciences.
According to the AFCD, the rock pillars of the Liangchuanwan Formation are numerous, large, well-preserved, and widely distributed. They are rare and most representative geological wonders in the world. , recognized for its international importance.
The Agriculture, Fisheries and Conservation Department announced on October 22 that the Early Cretaceous rhyolite column group in the Geopark was selected as one of the first 100 IUGS geological heritage sites. Group of rock pillars.
(Photo by AFCD)
The AFCD announced on Saturday evening that the Early Cretaceous rhyolite pillars (ie hexagonal volcanic pillars) in the Hong Kong Geopark were selected as one of the first 100 International Union of Geological Sciences (IUGS) geological heritage sites.
Found in the Early Cretaceous rhyolite column group along the coast of Sai Kung named Liang Chuan Wan Formation
Most of the hexagonal rock pillars around the world belong to dark gray basalt with low siliceous content. According to the Agriculture and Fisheries Department, the Early Cretaceous rhyolite rock pillar group found along the coast of Sai Kung and many nearby islands, named the Liang Chuan Wan Formation. Silica-rich light-colored rhyolite volcanic rock, this group of rock pillars is distributed in the area of about 100 square kilometers in the area of Liang Chuan Wan in Sai Kung East Country Park, Kau Sai Chau, Tieu Chung Chau, Weng Kong Islands and Guo Chau Islands. Covering land and sea, the average diameter of rock pillars is 1.2 meters, and the maximum can reach 3 meters, and the height of the outcrop is 100 meters.
Originated from volcanic activity about 140 million years ago, the accumulation of volcanic material shrunk into hexagonal volcanic rock columns
According to the AFCD, according to research by geologists, the Sai Kung volcanic rock pillars originated from volcanic activity in the area about 140 million years ago, when intense crustal activity led to the formation of a large volcano in the southeast of Hong Kong.
Experts believe that the eruption spewed a large amount of ash and lava, and the volcano eventually collapsed to form a caldera with a diameter of about 20 kilometers.
A large amount of volcanic material accumulated in the caldera and slowly cooled and contracted, forming a hexagonal volcanic rock column.
The Liangchuanwan Group is large and the AFCD is well preserved: the selected representative is recognized for its international importance
The Agriculture, Fisheries and Conservation Department said in a statement that the Early Cretaceous rhyolite rock pillar group found along the coast of Sai Kung and many nearby islands is called the Liang Chuan Wan Formation. The world's rare and most representative geological wonder.
The Liangchuanwan Formation was selected as one of the first 100 geological heritage sites of the International Federation of Geosciences and Technology, which was recognized for its international importance.
The stone forest karst landform in the Mainland and the Grand Canyon of the United States were also selected
The IUGS List of Geological Heritage Sites aims to recognize geological heritage sites of high international scientific significance around the world in order to promote their conservation, education and geotourism.
The first 100 IUGS Geological Heritage Sites were announced in the Spanish town of Zumaia from October 25th to October 28th (Spanish time).
The selected geological heritage sites include the Stone Forest Karst in the Mainland, Ayers Rock in Australia, the Grand Canyon in the United States and Pamukkale in Turkey.
Sai Kung Hiking Route｜Shang Yiu Countryside Trail is less ups and downs, and the family can enjoy the beautiful scenery of Liangchuan Bay. The Fisheries and Conservation Department spends 250,000 yuan to revitalize the Kat O Cultural Trail. CUHK rehabilitates a local variety of rice with vanilla incense "Flower waist" in mid-July, Bei'ao Lao Niu Wang in Ying City was nearly sterilized by the AFCD's search for an injured cow The newly established "Xiang Yi Terrace" in the pond, overlooking the water-soaked Melaleuca in the distance, is comparable to Qiandao Lake
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