通过对大兴安岭地区侏罗系与白垩系之间不整合面的讨论,以地层区域对比及同位素测年数据等信息确定其界线,达到 本区侏罗系与白垩......

Objective The Great Xing’an Range is located in the eastern Central Asian Orogenic Belt and contains a Mesozoic volcani......