| 西藏新生代秋乌组孢粉化石的发现及其初步研究 |
| |
| 引用本文： | 李建国. 西藏新生代秋乌组孢粉化石的发现及其初步研究[J]. 微体古生物学报, 2004, 21(2): 216-221 |
| |
| 作者姓名： | 李建国 |
| |
| 作者单位： | 中国科学院南京地质古生物研究所,南京,210008 |
| |
| 基金项目： | 国家 973重点基础科学发展规划研究项目 ( G19980 40 80 0 )，国家自然科学基金委员会重点项目 ( 3 993 0 0 2 0) |
| |
| 摘 要： | 本文首次报道西藏雅鲁藏布江缝合带附近秋乌组含煤沉积中的孢粉化石。孢粉植物群主要由Quercoidifes，具孔类及三孔沟类花粉组成，包括12科26属及一些未定类群。组合中产有少量的Graminidites及Tsugaepollenites。植物群的总体特征显示其时代可能为渐新世至早中新世。秋乌组沉积早期的环境比较温暖。
|
| 关 键 词： | 西藏 新生代 秋乌组 孢粉化石 渐新世 早中新世 |
| 修稿时间： | 2003-01-14 |
Discovery and Preliminary study on Palynofossils from the Cenozoic Qiuwu Formation of Xizang(Tibet) |
| |
| LI Jian-guo. Discovery and Preliminary study on Palynofossils from the Cenozoic Qiuwu Formation of Xizang(Tibet)[J]. Acta Micropalaeontologica Sinica, 2004, 21(2): 216-221 |
| |
| Authors: | LI Jian-guo |
| |
| Abstract: | A palynoflora from the lowest Qiuwu Formation near Xigaz, Xizang(Tibet) is newly found and studied. Twelve families and twenty-six gene- ra are recorded. Tricolporate pollen, Quercoidites and pollen with potential affinities to Ulmaceae or Moraceae are predominent in the flora. There are low occurrences of Graminidites and Tsugaepolleni- tes . The palyno-assemblage from the base of the Qiuwu Formation suggests a probable age of Oligocene to Early Miocene, contrasting to the previous opinions of Late Cretaceous to Paleocene, Eocene or Eocene to Oligocene. It also suggests a possibility of warm climate environment during the early stage of its sedimentation. |
| |
| Keywords: | palynofossils Qiuwu Formation Xizang(Tibet) |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
