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Quantitative determination of the effect of temperature on mudstone decay during wet-dry cycles: A case study of 'purple mudstone' from south-western China
Zhang, Dan1,2,3,4; Chen, Anqiang5; Wang, Xuemei1,2,3; Liu, Gangcai1,2,3
Corresponding AuthorLiu, Gangcai
2015-10-01
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
Volume246Pages:1-6
SubtypeArticle
AbstractAlthough temperature is considered a key factor influencing rock decay, little is known about the quantitative relationship between a rock's decay rate and temperature, which makes it difficult to quantitatively predict the rate of rock decay under varied temperature during wetting-drying cycle conditions. Thus, the aim of the present paper was to observe the decay rate of various purple mudstones and to develop a model with which to calculate their decay rates under varied temperature conditions. Three types of purple mudstone were sampled from the Tuodian group (J(3)t), Matoushan group (K(2)m) and Lufeng group (J(1)l), located in the Chuxiong district of Yunnan province, south-western China. All samples were manually cut into cubes of 50 x 50 x 50 mm, before being subjected to 39 wetting-drying cycles in a 2 mm sieve under artificial constant temperature, natural daily temperature variation and artificial temperature alternation (minimum and maximum) treatments in the laboratory. Decay rates were calculated by weighing the mass remaining in the sieve after each treatment cycle. The results showed that the decay rates of the tested rocks rose with an increase in temperature and temperature difference (maximum-minimum), with the rank order of decay rate being J(3)t > K(2)m > J(1)l. Quantitative analysis revealed rock decay rate to be significantly related to temperature by a power function, and exponentially related to temperature difference. Our results suggested that temperature difference has a stronger effect on purple mudstone decay than that of temperature magnitude during the wetting-drying processes. (C) 2015 Elsevier B.V. All rights reserved.
KeywordRock Decay Mudstone Temperature Alternation Wetting-drying
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.geomorph.2015.06.011
WOS Subject ExtendedPhysical Geography ; Geology
Indexed BySCI
WOS KeywordROCK TEMPERATURES
Language英语
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000360869400001
Funding OrganizationNational Natural Science Foundation of China(41471232) ; National 973 programme(2015CB452704)
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10978
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Minist Water Resources, Chengdu 610041, Peoples R China
4.Yunnan Agr Univ, Coll Resources & Environm, Kunming 650205, Peoples R China
5.Yunnan Acad Agr Sci, Inst Agr Environm & Resources, Kunming 650205, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
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GB/T 7714
Zhang, Dan,Chen, Anqiang,Wang, Xuemei,et al. Quantitative determination of the effect of temperature on mudstone decay during wet-dry cycles: A case study of 'purple mudstone' from south-western China[J]. GEOMORPHOLOGY,2015,246:1-6.
APA Zhang, Dan,Chen, Anqiang,Wang, Xuemei,&Liu, Gangcai.(2015).Quantitative determination of the effect of temperature on mudstone decay during wet-dry cycles: A case study of 'purple mudstone' from south-western China.GEOMORPHOLOGY,246,1-6.
MLA Zhang, Dan,et al."Quantitative determination of the effect of temperature on mudstone decay during wet-dry cycles: A case study of 'purple mudstone' from south-western China".GEOMORPHOLOGY 246(2015):1-6.
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