| 南京地区岩关早期地层——茨山组 |
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| 引用本文： | 李汉民
,张瑛
,应中锷
,张晓东
,刘卫红.南京地区岩关早期地层——茨山组[J].地层学杂志,1987(2). |
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| 作者姓名： | 李汉民 张瑛 应中锷 张晓东 刘卫红 |
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| 摘 要： | <正> 南京地区的下石炭统,按其岩性及生物群特征,自下而上分为茨山组、金陵组、高骊山组、和州组及老虎洞组五个地层单位。茨山组为本文创立,该组包括原划为上泥盆统五通组擂鼓台段上部的一套碎屑岩和金陵组底部含腕足类化石的砂岩。关于五通组的时代,潘江(1953)在南京龙潭的五通组(当时称五通系)上部发现繁盛于泥盆纪的胴甲鱼类(Antiarchi)。根据鱼化石的特征,刘东生、潘江(1958)认为五通组的时代是晚泥盆世早期或中泥盆世晚期。罗兴、潘鹏(1959)在南京龙潭相当含胴甲鱼的层位中,采到了具晚泥盆世特征的斜方薄皮木(Leptophloeum rhombicum Dawson)植物。李星学(1963)根据上述鱼
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Cishan Formation——Early Aikuanian strata in the Nanjing region |
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| Abstract: | In 1986, We measured the Cishan and Kongshan sections in Jiangning of Jiangsu and systematically gathered sporo-pollen samples. A large number of well preserved spores and pollen grains were obtained and 3 zones are recognized. The lower zone is the Retispora lepidophyta Zone; the middle is Vallatisporites vallatus-Aneurospora incohatus Zone; and the upper is Spelaeotriletes pre-tiostis Zone. These three zones can be correlated respectively with the Uppermost Devonian LN Zone, Lower Tournaisian VI Zone and Middle Tournaisian PC Zone in Europe. We named the clastic formation containing sporo-pollen Vallatisporites vallatus-Aneurospora incohatus Zone and Spelaeotriletes pretiosus Zone Cishan Formation, which belongs to Early Aikuanian (Early Carboniferous). |
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