| 云南曲靖地区关底组的时代 |
| |
| 引用本文： | 王成源.云南曲靖地区关底组的时代[J].地层学杂志,2001,25(2):125-127,T001. |
| |
| 作者姓名： | 王成源 |
| |
| 作者单位： | 中国科学院南京地区质古生物研究所 |
| |
| 基金项目： | 中国科学院南京地质古生物研究所现代古生物学与地层学开放研究实验室!(No. 99310 5)，国家科技部!(G2 0 0 0 0 7770 8,G99-A-0 46-0 5) |
| |
| 摘 要： | 近年来 ,珊瑚工作者和层序地层工作者分别提出云南曲靖地区关底组下部或岳家山段应属文洛克统 (Wen-lock)。但在关底组岳家山段发现的 Ozarkodina crispa (Walliser) beta Morph.仍属 Ozarkodina crispa带 ,证明岳家山段仍属 L udlow世的晚期。 O.crispa可上延到 Pridoli世的早期。层序地层工作者将上易剥页岩归入早泥盆世是不可取的
|
| 关 键 词： | 关底组 牙形刺 Ludlow 志留纪 云南 |
| 文章编号： | 0253-4959(2001)02-0125-03 |
AGE OF THE GUANDI FORMATION IN QUJING DISTRICT, E. YUNNAN |
| |
| WANG Cheng,yuan.AGE OF THE GUANDI FORMATION IN QUJING DISTRICT, E. YUNNAN[J].Journal of Stratigraphy,2001,25(2):125-127,T001. |
| |
| Authors: | WANG Cheng yuan |
| |
| Abstract: | Since Walliser & Wang Cheng yuan (1989) found Ozarkodina crispa in the upper part of the Guandi Formation, it seems unquestionable to assign the Guandi Formation to Late Ludlow. Recently, coral specialists (Ding Chun ming, 1988; He Xin yi et al ., 2000) and sequence stratigraphic specialists (Shan Wei guo et al ., 1997) proposed respectively that the Guandi Formation should belong to the Wenlock. The present author has collected conodont samples from the lower part of the Guandi Formation, i.e, from the Yuejiashan Member, and found Ozarkodina crispa beta Morph, clearly indicating that the whole Guandi Formation should be assigned to the Late Ludlow. |
| |
| Keywords: | Guandi Formation Yuejiashan Member Ludlow Silurian Yunnan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
