| 湖南新化至涟源下石炭统葛万藻(Girvanella)及其沉积环境的讨论 |
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| 引用本文： | 刘雪娴,黎汉明.湖南新化至涟源下石炭统葛万藻(Girvanella)及其沉积环境的讨论[J].南京大学学报(自然科学版),1988(1). |
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| 作者姓名： | 刘雪娴 黎汉明 |
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| 作者单位： | 南京大学生物系，广东省地质局地质调查大队 |
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| 摘 要： | 本文报道了在湖南新化至涟源早石炭世大塘阶,这一重要舍煤地层中所发现的葛万藻属Girvanella的两个种。它们是杜切葛万藻G.ducii和中华葛万藻G.sinensis。这些化石的发现说明该区域葛万藻化石产出的层位,其沉积环境可能是海水较浅、清静、水动力小的低能环境;其沉积位置可能是在相当于陆棚上部的地方。本文还就葛万藻属的分类标准问题进行了讨论。
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| 关 键 词： | 化石藻类 葛万藻 早石炭世 沉积环境 |
THE LOWER CARBONIFEROUS Girvanella FROM XINHUA COUNTY TO LIANYUAN COUNTY, HUNAN AND ITS DEPOSITIONAL ENVIRONMENT |
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| Liu Sieya.THE LOWER CARBONIFEROUS Girvanella FROM XINHUA COUNTY TO LIANYUAN COUNTY, HUNAN AND ITS DEPOSITIONAL ENVIRONMENT[J].Journal of Nanjing University: Nat Sci Ed,1988(1). |
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| Authors: | Liu Sieya |
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| Abstract: | Two species of Girvanella are described in this paper. They are found in the Lower Carvoniferous Daitang zone (an important formation of coal) from Xinhua Covnty to Lianyuan county, Hunan. These fossil species are Gervanella ducii, and G. sinensis. This shows that the depositional environment in the area where these fossils are found was once a shallow sea facies as well as a rather quiet low-energy environment. The deposition of this rock in Dai tang zone may have taken place in the upper part of continental shelf. The problem of criteria used to distinquish between species of Girvanella is also discussed in this paper. |
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| Keywords: | fossil algae Girvanella Lower Carboniferous dcpositional environment |
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