| 河南镇平早白垩世孢粉的发现及其意义 |
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| 引用本文： | 符俊辉 薛祥煦. 河南镇平早白垩世孢粉的发现及其意义[J]. 石油实验地质, 1992, 14(1): 102-107. DOI: 10.11781/sysydz199201102 |
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| 作者姓名： | 符俊辉 薛祥煦 |
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| 作者单位： | 西北大学地质系 西安 710069 |
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| 摘 要： | 本文首次论述了河南镇平早白垩世白湾组的孢粉组合面貌及其特征。根据孢子花粉属、种的垂直分布,自下而上把白湾组的孢粉组合可分为两个亚组合。下亚组合以Classopollis-Scneoisporiles为特征;上亚组合以Clas-sopllis-Scizneoisporiles-Jugella-Cidricosisporiles为特征。根据孢粉组合特征,把白湾组的时代确定为早白垩世,并以下亚组合代表别里亚士期-凡兰今期,上亚组合代表欧特里期-巴列姆期。
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| 关 键 词： | 河南早白垩世 孢粉组合 |
| 收稿时间： | 1990-03-24 |
A DISCOVERY OF EARLY CRETACEOUS SPOROPOLLENS IN ZHENPING COUNTY OF HENAN PROVINCE AND ITS SIGNIFICANCE |
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| Affiliation: | Geological Department of Northwest China University, Xi'an |
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| Abstract: | For the firsttime,the paper describes the asssemblage and the features of the early Cretaceous sporo-pollens discovred in the Baiwan Formation,Henan Province. According to their vertical distributions of genera and families, the sporo-pollenassemblage in the Baiwan Formation can be divided in to two sub-assemblages from bottom to top. The lower one ischaracterized by classapollis-Schizacois parties while the upper one by Classsopollis-Schizaneoisporites-Jugella-Cicatricasisporites.Based on the assemblage features of the sporo-pollen,the age of the Baiwan Formation is ascertained as the Early Cretaceous,therefore,the lower sub-assemblage represents Berriasian-Valanginian,and the upper one represents Hauterivian-Barremian, respectively. |
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