陕西秃尾河晚三叠世孢粉植物群及其环境意义  

Late Triassic Palynoflora and Its Environmental Significance of Tuweihe, Shaanxi

作　　者：王永栋[1] 江德昕[2] 谢小平[3] 

机构地区：[1]中国科学院南京地质古生物研究所,南京210008 [2]中国科学院兰州地质研究所,兰州730000 [3]华东师范大学河口海岸国家重点实验室

出　　处：《沉积学报》2003年第3期434-440,共7页Acta Sedimentologica Sinica

基　　金：国家自然科学基金项目 (No .3990 0 0 0 7)资助

摘　　要：本文基于陕西北部秃尾河地区上三叠统发现的孢子花粉化石 31属 4 8种的研究 ,建立了研究区晚三叠世孢粉植物群。根据孢粉植物群的特征探讨了该区晚三叠世生态环境及其与石油和煤炭形成的关系。研究结果认为 ,暖湿 (或湿热 )Based on the investigations of 48 species of fossil spores and pollen referred to 31 genera found from the Upper Triassic Yongping and Wayaopu Formations in T uweihe region of northern Shaanxi, the Late Triassic palynoflora in the region was established in this paper. In accordance with the character of the palynoflora, the Late Triassic paleoecological environment in the region was discussed. The relation b etween the origin of petroleum and coal and the environment was involved. The re sults of this study confirm that the lacustrine depositional environments under warm/h ot and humid/wet climatic conditions might be favorable for the origin of petroleum , and the swamp/marsh depositional environments under warm/hot and humid/wet clima tic conditions might be favorable for the origin of coal.

关 键 词：陕西 秃尾河地区 晚三叠世 孢粉植物群 古生态 古环境 

分 类 号：P534.51[天文地球—古生物学与地层学] Q913.84[天文地球—地质学]