关于河北省商都-张北区“南天门砾岩”及“张家口斑岩”地质时代的新见

• 作 者: 李勤
• 机 构: 河北省地质局区域地质测量大队,
• 出 处: 地质论评
• 发表日期: 1959年08期
• 关键词: 斑岩 南天门 不整合 地层表 侏罗 白垩系 天阴 其下 标准化石 砂岩

一、前言南天门砾岩及张家口斑岩的名称及时代是英人巴尔博在1929年确定的。根据他的意见,南天门砾岩的时代按化石及变动情况大致属下白垩纪初期,而以不整合关系伏于其下的张家口斑岩则不应早于上侏罗纪,此后迄至1955年为止,在中国区域地层表(草案)中仍将两者划为下白垩系。1957年我队在张家口南

I. Preface The names and times of the Nantianmen conglomerate and the Zhangjiakou porphyry were determined by Anglo-Balbo in 1929. According to his opinion, the age of the Nantianmen conglomerate according to fossils and changes roughly belongs to the early Cretaceous, and the Zhangjiakou porphyry under unconformity relationship should not be earlier than the Upper Jurassic, As of the year, both are still classified as Lower Cretaceous in the Chinese Table of Regional Stratigraphy (Draft). 1957 my team Zhangjiakou south