中国科学院青海盐湖研究所机构知识库
Advanced  
ISL OpenIR  > 青海盐湖研究所知识仓储  > 期刊论文
题名: Contingency table analysis of pebble lithology and roundness: A casestudy of Huangshui River, China and comparison to rivers in the RockyMountains, USA
作者: Miao, Xiaodong ;  Lindsey, David A ;  .Lai, Zhongping ;  Liu, Xiaodong
刊名: SEDIMENTARY GEOLOGY
出版日期: 2010
卷号: 224, 期号:1-4, 页码:49-53
英文摘要: Contingency table analysis of pebble lithology and roundness is an effective way to identify the source terrane of a drainage basin and to distinguish changes in basin size, piracy, tectonism, and other events. First, the analysis to terrace gravel deposited by the Huangshui River, northeastern Tibet Plateau, China, shows statistically contrasting pebble populations for the oldest terrace (T7, Dadongling, 1.2 Ma) and the youngest terraces (T0-T3, <= 0.15 Ma). Two fluvial processes are considered to explain the contrast in correlation between lithology and roundness in T7 gravel versus T0-T3 gravel: 1) reworking of T7 gravel into T0-T3 gravel and 2) growth in the size of the river basin between T7 and T0-T3 times. We favor growth in basin size as the dominant process, from comparison of pebble counts and contingency tables. Second, comparison of results from Huangshui River of China to three piedmont streams of the Rocky Mountains, USA highlights major differences in Source terrane and history. Like Rocky Mountain piedmont gravel from Colorado examples, the Huangshui gravels show a preference (observed versus expected frequency) for rounded granite. But unlike Rocky Mountain gravel, Huangshui gravel shows a preference for angular quartzite and for rounded sandstone. In conclusion, contrasting behavior of lithologies during transport, not always apparent in raw pebble counts, is readily analyzed using contingency tables to identify the provenance of individual lithologies, including recycled clasts. Results of the analysis may help unravel river history, including changes in basin size and lithology. Published by Elsevier B.V. Contingency table analysis of pebble lithology and roundness is an effective way to identify the source terrane of a drainage basin and to distinguish changes in basin size, piracy, tectonism, and other events. First, the analysis to terrace gravel deposited by the Huangshui River, northeastern Tibet Plateau, China, shows statistically contrasting pebble populations for the oldest terrace (T7, Dadongling, 1.2 Ma) and the youngest terraces (T0-T3, <= 0.15 Ma). Two fluvial processes are considered to explain the contrast in correlation between lithology and roundness in T7 gravel versus T0-T3 gravel: 1) reworking of T7 gravel into T0-T3 gravel and 2) growth in the size of the river basin between T7 and T0-T3 times. We favor growth in basin size as the dominant process, from comparison of pebble counts and contingency tables. Second, comparison of results from Huangshui River of China to three piedmont streams of the Rocky Mountains, USA highlights major differences in Source terrane and history. Like Rocky Mountain piedmont gravel from Colorado examples, the Huangshui gravels show a preference (observed versus expected frequency) for rounded granite. But unlike Rocky Mountain gravel, Huangshui gravel shows a preference for angular quartzite and for rounded sandstone. In conclusion, contrasting behavior of lithologies during transport, not always apparent in raw pebble counts, is readily analyzed using contingency tables to identify the provenance of individual lithologies, including recycled clasts. Results of the analysis may help unravel river history, including changes in basin size and lithology. Published by Elsevier B.V.
收录类别: SCI
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.isl.ac.cn/handle/363002/1931
Appears in Collections:青海盐湖研究所知识仓储(2014年之前)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
1-s2.0-S0037073809002942-main[1].pdf(422KB)----开放获取
by-nc-sa
View Download

Recommended Citation:
Miao, Xiaodong,Lindsey, David A,.Lai, Zhongping,et al. Contingency table analysis of pebble lithology and roundness: A casestudy of Huangshui River, China and comparison to rivers in the RockyMountains, USA[J]. SEDIMENTARY GEOLOGY,2010,224(1-4):49-53.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Miao, Xiaodong]'s Articles
 [Lindsey, David A]'s Articles
 [.Lai, Zhongping]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Miao, Xiaodong]‘s Articles
 [Lindsey, David A]‘s Articles
 [.Lai, Zhongping]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 1-s2.0-S0037073809002942-main[1].pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2016  中国科学院青海盐湖研究所 - Feedback
Powered by CSpace