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吉林省煤炭工业管理局煤田地质勘探局地質队最近在延吉市附近发現第三纪地层。这套地层分布于清茶舘、五富洞、西山洞、上村、隆村、甘窰沟、东沟、后沟、白家一带,目前已圈定面积达42平方公里。該区地层一向为地质界所注目,很久以来,不少地质工作者都曾把它列入白堊系之內。这套第三纪地层呈东北走向,北西傾斜,傾角少数为13°—22°,一般为5°—8°,已控制的厚度为115米。主要以灰白色砂岩,粉砂岩,其次为砂砾岩,
Geological Exploration Bureau of Coal Industry Administration of Jilin Province geological team recently found in the vicinity of Yanji City, Tertiary stratigraphy. This set of strata distributed in the tea house, Wufu hole, Xishan hole, on the village, Long Village, Ganyao ditch, Donggou, Hougou, white home area, has been delineated area of 42 square kilometers. The strata of this area has always been of concern to the geological community. For a long time, many geological workers have included it in the Cretaceous. The Tertiary strata are northeastward and northwesterly inclined with a small dip of 13 ° -22 °, typically 5 ° -8 °, and a controlled thickness of 115 meters. Mainly in white sandstone, siltstone, followed by glutenite,