一、概述最早的含煤地层在湖南见于上泥盆系的顶部(湘西北),部分地区见于泥盆石炭纪的岳麓山砂岩中(湘潭、湘乡)。由于煤薄质劣,分布不广,目前对其注意尚很不够。此外,在下寒武东普遍发育着1—2层黑色页岩,局部地区含炭量可达10—15％,并有少量挥发分,故有人称其为“石煤”。多开采用以烧石灰和砖瓦。 I. Overview The earliest coal-bearing strata were found in Hunan at the top of the upper Devonian (northwestern Hunan) and in some areas in the Yuelu Mountain sandstone of the Devonian Carboniferous (Xiangtan and Xiangxiang). Due to poor quality of coal, the distribution is not wide, the current attention is still not enough. In addition, 1-2 layers of black shale are commonly developed in the lower Cambrian, with carbon content up to 10-15% in some areas with a small amount of volatiles. Some people call it “stone coal”. More mining for burning lime and tiles.