在过去勘探工作中,未发现马鞍山煤系,而认为其在本区不存在。故对其中煤层之找寻未予以注意,经过本阶段工作,证实本区该煤系地层仍属存在,且其中有煤。这对解决当前缺煤问题有重大意义。 本区马鞍山煤系较其他地区有其特殊地方,其中夹灰岩,说明其沉积时海水较深。兹将本区所见数地区该地层情况简述如下: In the past exploration work, no Ma’anshan coal line was found and it was thought that it did not exist in this area. Therefore, we did not pay attention to the search for the coal seams, and after this stage of work, it was confirmed that the coal-bearing strata in this area still existed and there was coal therein. This is of great significance to solving the current problem of coal shortage. The Ma’anshan coal measure in this area has its special place more than the other areas, among which the limestone shows the deeper seawater when it is deposited. The strata as seen in this area are summarized as follows: