| 苏浙皖地区的龙潭组 |
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| 引用本文： | 王文耀.苏浙皖地区的龙潭组[J].地层学杂志,1993,17(3):232-236. |
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| 作者姓名： | 王文耀 |
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| 摘 要： | <正> 龙潭组原称“龙潭煤系”,由刘季辰、赵汝钧(1924)于南京龙潭创名。煤系“厚自80—110公尺,煤层仅只一层,在苏境内,其厚度不一,最厚者仅四、五尺许,延长不广,少远即减薄……。煤系中岩层,仅砂岩与页岩相间而生,煤层在全系中上之部,其上有不纯石灰岩一薄层,极富动物化石,属二叠纪。”这是有关龙潭组的最早论述。当时认为其下伏地层
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| 关 键 词： | 煤系 地层 龙谭组 苏浙皖地区 |
The Lungtan (Longtan) Formation in the Jiangsu Zhejiang Anhui area |
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| Abstract: | Liu Ji-chen et al. (1924) founded the Longtan coal-measures (A) and Li Yu-yao et al. (1935) drew out "Dongyanggang Stratum" from the coal-measures, called the Left Longtan coal-measures (B) and divided the coal-measures (B) into three parts. Bureau of Petroleum Exploration of East China (1959) found out that there exists "a member without coals" in the lower part of the Longtan coal-measures(B). Sheng Jin-zheng (1962) named the Longtan coal-measures (B) Longtan Formation (C) and was sure that the age of this formation is the same as that of the Wujiaping Formation. As Neomisellina was discovered, Hu Shi-zhong (1962) moved the bottom boundary of the Longtan Formation (D) up to the bottom boundary of "arkose-quartzitic sandstone bed". Sheng Jin-zhang et al (1974) augmented the Gufeng Formmation and moved up the bottom boundary of the Longtan Formation (C). In various monographs published since late 70's, the contents of the "Longtan Formation" are different. The Longtan Formation is distinctly diachronous. From east to west, the age of the bottom boundary of the Longtan Formation varies from early Maokou to late Maokou age, and the top boundary of the Longtan Formation from the end of Wujiaping age to the beginning of the Wujiaping age. The boundary between the Early Permian and the Late Permian is placed between the "C Coal Stratum" and "Yamei Limestone" or "the Fourth Limestone. |
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