吉林省泥盆系层序的新划分

New division of the Devonian stratigraphic sequence of Jilin

吉林省泥盆系露头比较零星,地层资料也比较少。1966年李东津等在永吉县黄榆屯西王家街发现泥盆纪珊瑚,长春地质学院等命名为王家街组。分布在磐石县呼兰镇至黑石镇一带的变质岩系呼兰群经郭鸿俊的研究被划为志留—泥盆系,但至今仍有争议。笔者通过珊瑚化石的研究,肯定了原定为志留系的二道沟灰岩为早泥盆世早期地层。

The Devonian System of Jilin, which was rarely known in the past,is now tentatively divided into the following stratigraphic units before further work is clone: the lower Middle Devonian (Eifelian) Wangjiajie Formation, the upper Lower Devonian (Emsian) Jiancaodianzi Formation and the Lowermost Devonian (Lochkovian) Erdaogou Formation. The upper part of the metamorphic Hulan Group belongs to the Middle Devonian.