Angara shield
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A stable continental region since the Paleozoic era, estimated from the distribution of Precambrian rocks in East Asia. It spans northern China, Mongolia, the Korean peninsula, Siberia, and Irkutsk. The Angara Shield is covered by a wide area of Paleozoic Permian strata, including the Angara flora, and there was a time when it faced off against the Gondwana continent, including the Gondwana flora, across the Tethys Ocean. (→ Shield) Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
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東アジアの先カンブリア時代の岩石分布から推定される古生代以後の安定大陸地域。中国北部，モンゴル，朝鮮半島，シベリア，イルクーツクにわたる。アンガラ楯状地を覆ってアンガラ植物群を含む古生代ペルム紀の地層が広く分布し，テチス海を隔てて，ゴンドワナ植物群を含むゴンドワナ大陸と対峙した時代がある。（→楯状地）
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