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杨桥-洪塘矿区位于萍乐拗陷西段,是上二迭统含煤建造龙潭煤系著名发育地区之一。根据国家十年科学规划第《52项》有关规定,江西省煤田地质勘探公司所属单位与中国矿业学院地质系合作,对分宜、杨桥矿区的龙潭组进行了内容广泛的研究。 作为上述工作的一部分,也研究了该矿区及其相邻的洪塘矿区东北部的上二迭统地层。以下文中提到的“工作区”均包括上述两个地区。总面积约400余平方公里（见交通位置图）。 地层研究的野外工作,自1977年7月初开始至1978年4月结束,随即转入室内资料整理及报告编写工作。 由于工作区植被发育,自然露头较少,除少数地质剖面测自露头区外,大部地层剖面是在探槽中测绘的。总计挖掘土方6,068.42立方米。实测地层剖面15条,总长2,235米。草测剖面4条;补充采集剖面外化石点12个。总计采集各门类化标本3,500多块,在详细鉴定
Yangqiao - Hongtang Mining Area is located in the west section of Pingle Depression, and is one of the well-known developed areas of Longtan Coal Measures in the Upper Permian coalfield. According to the relevant provisions of Article 52 of the National 10-Year Scientific Plan, the units affiliated to Coal Geological Prospecting Company of Jiangxi Province and the Department of Geology, China University of Mining and Technology worked together to conduct a comprehensive study on the Longtan Formation in Fenyi and Yangqiao Mining Areas. As part of the above work, the Upper Second Permian strata in the northeast of the mining area and its neighboring Hongtang mining area were also studied. The “work area” mentioned below includes both of these areas. The total area of about 400 square kilometers (see traffic location map). Field work on stratigraphic research, which began in early July 1977 and ended in April 1978, was immediately followed by consolidation of indoor information and preparation of reports. Due to the development of vegetation in the work area, there are few natural outcrops. Most of the stratigraphic sections are mapped in the trenches except for a few geologic profiles measured from the outcrop area. A total of 6,068.42 cubic meters of earth excavation. Measured stratigraphic section 15, total length 2,235 meters. 4 grass-weed sections; 12 additional fossil points were collected. A total collection of more than 3,500 pieces of various specimens, in a detailed identification