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世界地质公园网络中的山岳——糸鱼川联合国教科文组织世界地质公园

来源:世界地质公园网络GGN 作者:世界地质公园网络GGN 时间:2018-3-19 15:40:49

 糸(sī,同“丝”)鱼川联合国教科文组织世界地质公园位于日本新泻县本州岛中心附近。
作为教科文组织认可的日本具有国际地质意义的八个地区之一,糸鱼川是分布在35个国家的127个联合国教科文组织世界地质公园之一,同样也是世界地质公园网络的机构成员。
公园北接日本海(日本阿尔卑斯山脉在此沉入日本海),南面是耸立的高山。在这里可以观察到从海岸到阿尔卑斯山的地形地貌,以及由此而富集的动植物。
“地质百货公司”虽然只是简单的一个词语,但却准确地概括出了糸鱼川地质公园的特点。一直以来,公园都位于板块边界。糸鱼川静冈构造线穿过公园中部,将其分为东西两部分,区分了欧亚板块和北美板块。这条大断层线一直向北延伸,通过北冰洋连接到大西洋中脊。因此,糸鱼川不仅讲述着日本诸岛的故事,同时还有5亿多年的地球历史。太平洋海底的石灰岩山地以及古生代俯冲板块深处形成的玉石,讲述着板块的水平和垂直运动。而日本群岛离开亚洲大陆时形成的大海沟带,是了解岛屿形成的关键。糸鱼川联合国教科文组织世界地质公园确实是日本群岛的一个缩微模型。

Itoigawa UNESCO Global Geopark is located near the centre of Honshu Island in the Niigata prefecture, Japan. 
As one of the eight recognized by UNESCO areas with geoheritage of international importance in Japan, it belongs to the 127 UNESCO Global Geoparks laying in 35 countries. They are all institutional members of the Global Geoparks Network.
The Geopark meets the Sea of Japan in the north, where the mountains of the Japan Alps sink into the sea, and is bordered in the south by high mountains. Topography ranging from coastal to alpine can be observed here, thus creating a wide variety of geology and topography, as well as richness in plant and animal life.
The phrase "Department store of geology" simply, but precisely, describes Itoigawa UNESCO Global Geopark. The Itoigawa UNESCO Global Geopark has long been located at a plate boundary. The Itoigawa-Shizuoka Tectonic Line passing through this area separates the Japanese Islands geologically into East and West, the Eurasian and North American plates. This great fault continues north through the sea, connecting to the Mid Atlantic Ridge via the Arctic Ocean. In this way, the Itoigawa UNESCO Global Geopark tells the story of not just the Japanese Islands, but also over 500 million years of the Earth’s history. Submarine limestone mountains from the ancient Pacific Ocean and jade formed in the deep subduction zones in the geological past, and are describing horizontal and vertical plate movement. The Fossa Magna, a fissure formed when the Japanese Islands separated from the Asian continent, is a key to understanding the islands’ formation. The Itoigawa UNESCO Global Geopark is truly a condensed model of the Japanese Islands.