检索结果-南通市图书馆

Hydrogen isotopic characteristics and their genetic relationships for individual n-alkanes in plants and sediments from Zoigê marsh sedimentary environment

引用

Science china Earth sciences 2010年第9期53卷 1329-1334页

作者： duan yi1, zheng chaoyang2.& wu baoxiang1 1 key laboratory of petroleum resources research, Institute of Geology and Geophysics, Chinese {2. of {3., lanzhou 73.000, china 2.Department of Geology, Northwest University, Xi’an 710069, china 1. key laboratory of {2. {3. research Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China2. Department of Geology Northwest University Xi’an 710069 China

To understand internal relations of their hydrogen isotopic compositions in typical marsh environment, we, using GC-IRMS analytical technique, measured the hydrogen isotopes of individual n-alkanes in the herbaceous plant, woody plant leaf, and sediments from Zoigê marsh in china. The results show significant differences in the hydrogen isotopic compositions of n-alkanes among the different kinds of plants and the different species in the same kind. δD values of n-alkanes in the herbaceous plants (from -2.4‰ to -184‰) are lighter than those in woody plant leaf ( from -195‰ to -142. ), and the hydrogen isotopic compositions of n-alkanes in K. tibetica P. are lighter than P. pratensis L. The mean δD values of n-alkanes in the sediments from Zoigê marsh reflect that they were derived from herbaceous plants, which is consistent with the peat samples being composed mainly of herbaceous plant remnants. The significant differences in hydrogen isotopic compositions of n-alkanes among the sedimentary samples are caused possibly by environment factors and the difference in input quantity of different herbaceous plants. A certain negative correlation exists between the δ13. and δD values of n-alkanes in the samples, and plant types can be distinguished using the cross plot of δD vs. δ13. values of n-alkanes in the plants. These data and recognitions provide scientific basis for hydrogen isotopic applied {3. of individual n-alkanes.

关键词： marsh environment plants sediments individual lipids hydrogen isotopes genetic relationship

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydrogen isotopic characteristics and their genetic relationships for individual n-alkanes in plants and sediments from Zoige marsh sedimentary environment

Hydrogen isotopic characteristics and their genetic relation...

引用

中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： duan yi~(1*),{2. {3.~2.& wu baoxiang~1 1 key laboratory of petroleum resources research,Institute of Geology and Geophysics, Chinese academy of {12.,lanzhou 73.000,china 2.Department of Geology,Northwest University,Xi’an 710069,china

To understand internal relations of their hydrogen isotopic compositions in typical marsh environment,we,using GC-IRMS analytical technique,measured the hydrogen isotopes of individual n-alkanes in the herbaceous plant,woody plant leaf,and sediments from Zoige marsh in *** results show significant differences in the hydrogen isotopic compositions of n-alkanes among the different kinds of plants and the different species in the same kind.δD values of n-alkanes in the herbaceous plants(from -2.4‰to -184‰) are lighter than those in woody plant leaf(from -195‰to -142.),and the hydrogen isotopic compositions of n-alkanes in *** *** lighter than *** *** meanδD values of n-alkanes in the sediments from Zoige marsh reflect that they were derived from herbaceous plants,which is consistent with the peat samples being composed mainly of herbaceous plant *** significant differences in hydrogen isotopic compositions of n-alkanes among the sedimentary samples are caused possibly by environment factors and the difference in input quantity of different herbaceous plants.A certain negative correlation exists between theδC andδD values of n-alkanes in the samples, and plant types can be distinguished using the cross plot ofδD vs.δC values of n-alkanes in the *** data and recognitions provide scientific basis for hydrogen isotopic applied research of individual n-alkanes.

关键词： marsh environment plants sediments individual lipids hydrogen isotopes genetic relationship

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

西湖凹陷花港组浅水三角洲平原分流河道沉积构型

引用

古地理学报 2024年第3期26卷 525-544页

作者：杨征吴胜和段冬平徐振华熊绮聪张玉飞中国石油大学(北京)地球科学学院北京102249 油气资源与工程全国重点实验室中国石油大学(北京)北京102249 中海石油(中国)有限公司上海分公司上海200335

渐新统花港组上段是东海陆架盆地西湖凹陷中南部地区的主要产油气层位,但对其沉积体系的认识一直存在争议,砂体构型特征及控制因素的研究也相对匮乏。综合运用岩心、测井及地震等资料,研究渐新统花港组上段沉积环境、沉积微相类型、砂... 详细信息

渐新统花港组上段是东海陆架盆地西湖凹陷中南部地区的主要产油气层位,但对其沉积体系的认识一直存在争议,砂体构型特征及控制因素的研究也相对匮乏。综合运用岩心、测井及地震等资料,研究渐新统花港组上段沉积环境、沉积微相类型、砂体沉积构型特征及其控制因素。结果表明:西湖凹陷中南部花港组上段以浅水三角洲平原沉积为主,分流河道是最主要的砂体类型。根据弯曲度差异,可将分流河道划分为辫流型(弯曲度1~1.05)、曲流型(弯曲度大于1.15)和辫-曲转换型(弯曲度1.05~1.15)3.类型,其中辫流型分流河道砂体“宽而厚”,平面组合呈交织宽条带状,心滩呈斑点状排列,砂体垂向叠置样式以切叠型为主;曲流型分流河道砂体“窄而薄”,平面样式为单一条带型或分叉-合并型,厚砂以点坝的形式分布在河道边缘,砂体垂向叠置样式以“孤立型”为主;辫-曲转换型分流河道是辫流型和曲流型的过渡类型,河道砂体规模中等,河道内心滩和点坝同时发育。3.分流河道的厚度与宽度呈对数正相关,宽厚比具有辫流型>辫-曲转换型>曲流型的特征。推测古地貌和基准面变化是影响浅水三角洲分流河道构型特征的主要因素,其中古地貌控制了分流河道的河型变化,较陡的地形有利于低弯度辫流型分流河道的形成,而长期基准面上升造成了分流河道规模逐渐下降,中期基准面的上升造成了分流河道砂体叠置样式发生切叠型→叠加型→孤立型的演变。研究成果完善了浅水三角洲的沉积构型知识库,对地下浅水三角洲分流河道储集层的预测及开发具有重要的指导意义。

关键词：东海陆架盆地西湖凹陷渐新统花港组浅水三角洲分流河道沉积构型

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：