在吉林省东部长白山区的图们、汪清、珲春、安图一带广泛的分布着一套古生界的浅变质岩系。这套岩系即所谓图们层。以前一些日本人叫它荳满几层。也有人认为它相当于吉林层。图门层主要是由一些黑色权岩、云母质砂岩、粉砂岩互层组成。其中有时夹透镜状石灰岩。 A series of Paleozoic metamorphic rocks are widely distributed in the Tumen, Wangqing, Hunchun and Antu areas in the Changbai Mountain area in the eastern part of Jilin Province. This rock series is the so-called Tumen layer. Some Japanese used to call it a few layers of beans. Some people think it is equivalent to Jilin layer. Tumen layer is mainly composed of a number of black right rock, mica sandstone, siltstone interbed. There are sometimes lens-like limestones.