古地理学报 ›› 2006, Vol. 8 ›› Issue (1): 23-33. doi: 10.7605/gdlxb.2006.01.003

• 生物古地理学及古生态 • 上一篇    下一篇

陕西铜川晚三叠世孢粉植物群及其环境意义

江德昕  王永栋  魏 江   

  1. 1 中国科学院地质与地球物理研究所  北京100029
    2 中国科学院南京地质古生物研究所 南京210008
    3 美国弗吉尼亚州立诺福克大学 诺福克VA23504
  • 出版日期:2006-02-01 发布日期:2006-02-01
  • 作者简介:江德昕,女,1933年出生,1956年毕业于北京地质学院石油地质系,现为中国科学院地质与地球物理研究所研究员,从事孢粉学和石油地质学研究。

The Late Triassic palynoflora and its environmental significance in Tongchuan, Shaanxi Province

Jiang Dexin   Wang Yongdong   Wei Jiang   

  1. 1 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
    2 Nanjing Institute of Geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008
    3 Norfolk State University, Norfolk VA 23504 USA
  • Online:2006-02-01 Published:2006-02-01
  • About author:Jiang Dexin ,born in 1933, was graduated from the Department of Petroleum Geology, Beijing College of Geology in 1956. Now she is a research professor of Institute of Geology and Geophysics, Chinese Academy of Sciences, and is engaged in palynology and petroleum geology.

摘要:

本文基于陕西铜川地区上三叠统永坪组和瓦窑堡组发现的孢子花粉化石28属46种的研究,建立了研究区晚三叠世早期至晚期孢粉植物群。根据孢粉植物群的特征探讨了该区晚三叠世古生态、古气候、古地理和沉积环境。研究结果认为研究区晚三叠世早期古气候和沉积环境有利于石油的形成,晚期古气候和沉积环境有利于煤炭和天然气的形成。

Abstract:

 Based on the investigations of 46 species of fossil spores and pollen belonging to 28 genera which were found from the Yongping Formation and Wayaopu Formation of Upper Triassic in Tongchuan region of Shaanxi Province, the early to late Late Triassic palynoflora in the region was established. According to the characters of the palynoflora, the Late Triassic palaeoecological, palaeoclimatic and palaeogeographic characters as well as the sedimentary environments in the region were discussed. The results indicate that during the early Late Triassic, the palaeoclimatic conditions and the sedimentary environments were favorable for the formation of petroleum, and during the late Late Triassic ,the palaeoclimatic conditions and the sedimentary environments were favorable for the formation of coal and natural gas.