At the bottom of the yellow cinnamon, gray and purple-brown sandstone in the rough tile floor, 67 meters thick, and a seam line, also associated with siderite, oil shale, oil sand and other minerals.

• 底部为黄褐、灰白色与紫褐色中粗砂岩瓦层，厚67米，属煤层地系，还伴生有菱铁矿、油页岩、含油砂岩等矿藏。