论文详情

河南镇平早白垩世孢粉的发现及其意义

石油实验地质

1992年 14卷第1期

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Title

A DISCOVERY OF EARLY CRETACEOUS SPOROPOLLENS IN ZHENPING COUNTY OF HENAN PROVINCE AND ITS SIGNIFICANCE

作者

符俊辉薛祥煦袁凤钿张云翔崔智林孟检查

Authors

FU Junhui Xue Xiangxu Yuan Fengdian Zhang Yunxiang Cui Zhilin Meng Jiancha

单位

西北大学地质系西安 710069

Organization

Geological Department of Northwest China University, Xi'an

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。

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.

关键词：

河南早白垩世; 孢粉组合;

基金项目

DOI

https://doi.org/10.11781/sysydz199201102