Chapter 2g Hokkaido
Chapter 2g Hokkaido
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第2g章 北海道
DOI：
10.1144/goj.8
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
H.
中科院分区：
文献类型：
--
作者：
Ueda;H.
北海道是日本四个主要岛屿中最北端的一个，位于西南部的本州岛之间，北部是邻近的俄罗斯远东领土，如萨哈林岛，西部是滨海边疆区（锡霍特-阿林），东部是千岛群岛。它与所有这些邻近地区都有密切的地质关系。该岛还面临三个海洋盆地：南部的太平洋，东北部的鄂霍次克海的千岛盆地，以及西部的日本海。后两个是中新世开启的弧后盆地，因此大多数基底岩石在其开启之前就已生成，并与太平洋洋板块俯冲的侏罗纪-古近纪弧沟系统有关。
Hokkaido is the northernmost of the four main islands of Japan and lies between Honshu Island to the SW, the neighbouring far-east Russian territories such as Sakhalin Island to the north, Primorye (Sikhote-Alin) to the west and the Kuril islands to the east. It has close geological relations with all these adjacent areas. The island also faces three ocean basins: the Pacficto the south, the Kuril Basin of the Sea of Okhotsk to the NE, and the Sea of Japan to the west. The latter two are back-arc basins opened in the Miocene, so that most of the basement rocks were generated before their opening and related to Jurassic-Palaeogene arc-trench systems involving subduction of oceanic plates in the Pacific.