甘肃内蒙古北山地区古生代地壳演化-西北地质-西北地调 关键词： 北山地区,古生代,板块构造体制,造山作用 [gap=1538]Key words： Beishan area, Palaeozoic, plate tectonic system, orogenesi
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The Qilian and Beishan area is a matching body of many tectonic elements.
祁连山、北山地区是一个多构造单元的拼合体。
Early - Precambrian rocks are widely exposed in Dunhuang - Beishan area, GansuProvince.
甘肃敦煌-北山地区广泛出露早前寒武纪岩石。
The volcanics in the Beishan area, consisting mainly of lava and tuff, are well developed and linearly distributed.
北山地区火山岩发育，以熔岩和凝灰岩为主。
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