| 青海省民和县古近系西宁群孢粉植物群的地质意义 |
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| 引用本文： | 喻建新,张海峰,林启祥,顾延生,张智勇.青海省民和县古近系西宁群孢粉植物群的地质意义[J].地球科学,2003,28(4):401-406. |
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| 作者姓名： | 喻建新 张海峰 林启祥 顾延生 张智勇 |
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| 作者单位： | 中国地质大学地球科学学院, 湖北武汉 430074 |
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| 基金项目： | 中国地质调查局“民和县幅 1∶2 5万数字地质填图项目” (No .2 0 0 2 13 0 0 0 0 16)，国家自然科学基金重点项目 (No .40 2 5 2 0 2 3 ) . |
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| 摘 要： | 通过从青海省民和县松树公社上路家堡古近系西宁群(EN1X) 剖面所获得的孢粉可知, 以拟白刺粉属、麻黄粉属为主, 青海粉属、藜粉属次之, 伴有其他孢粉成分参与的这种孢粉组合特征, 反映的是晚始新世西北地区孢粉植物群面貌, 属灌丛植被类型, 即以蒺藜科的白刺属和麻黄科的麻黄属植物为主的灌木繁盛, 乔木植物零星分布, 难以形成大片林地的植物景观.同时从出现的孢粉属种的生态习性分析, 说明当时的气候较炎热、干旱少雨, 大体相当于我国目前中亚热带气候类型.
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| 关 键 词： | 晚始新世 西宁群 孢粉组合 青海民和县 |
| 文章编号： | 1000-2383(2003)04-0401-06 |
| 收稿时间： | 2003-04-18 |
Geological Implications of Sporopollenites Flora from Tertiary Xining Group in Minhe County, Qinghai Province |
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| YU Jian-xin,ZHANG Hai-feng,LIN Qi-xiang,GU Yan-sheng,ZHANG Zhi-yong.Geological Implications of Sporopollenites Flora from Tertiary Xining Group in Minhe County, Qinghai Province[J].Earth Science-Journal of China University of Geosciences,2003,28(4):401-406. |
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| Authors: | YU Jian-xin ZHANG Hai-feng LIN Qi-xiang GU Yan-sheng ZHANG Zhi-yong |
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| Abstract: | The Tertiary Xining Group largely bassets in Minhe County, Qinghai Province. The paper describes the spores and pollen grains collected from the Xining Group section in Shanglujiabao, Minhe County, Qinghai Province. The spore-pollen assemblage is identified to be Nitrariadites-Ephedripites-Chenopodipollis. The spore-pollen assemblage characters and the correlation with other related assemblages of China show that this assemblage may be of Late Eocene, and at that time this area could be very dry and torrid, and could have been covered with grassland compound with jungles. |
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| Keywords: | Late Eocene Xining Group sporo-pollen flora Minhe County of Qinghai Province |
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