The effects of chemical composition and distribution on the preservation of phytolith morphology

CORC > 古脊椎动物与古人类研究所 > 中国科学院古脊椎动物与古人类研究所 > 古人类及旧石器研究室

	The effects of chemical composition and distribution on the preservation of phytolith morphology
	Wu, Yan 1; Yang, Yimin 1,2; Wang, Hua 3; Wang, Changsui 1,2; Wang, CS (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China.
刊名	APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
	2014-02-01
卷号	114 期号:2 页码:503-507
ISSN号	0947-8396
文献子类	Article
英文摘要	Different types of phytolith even when coming from the same plant react to high temperatures in different ways. To understand the behavior of phytoliths upon heating, we examined composition and distribution of some elements within different phytolith types using SEM-EDS and synchrotron radiation mu-X-ray fluorescence. By analyzing phytoliths from rice husk, rice leaf and Than tree leaf, we find that the compositions and distributions of metal oxides within different phytolith types are quite different. It is well known that metal oxides have been used as fluxing agent to reduce the melting temperature of SiO2 in the production of glass, and different metal oxides can be used to produce a variety of glass with diverse features. Similarly, metal elements including potassium, magnesium and calcium in phytoliths should also act as a fluxing agent under high temperature, and the differential compositions and distributions of these metal elements within the phytoliths resulted in the variable reaction to heating. In sum, there is a negative relationship between the flux elements composition in phytoliths, and the temperatures at which phytoliths deform; furthermore, potassium and calcium in the rice leaf phytolith are almost evenly distributed in all parts, which may cause the phytolith's shape to deform evenly. In comparison, Than tree leaf phytolith is found to have a high percentage of potassium and calcium located exclusively on the outside, which may explain why the deformation of Than tree leaf phytolith occurs firstly at the outside.
WOS关键词	ISOTOPE ; ECUADOR
WOS研究方向	Materials Science ; Physics
语种	英语
WOS记录号	WOS:000330586200030
资助机构	National Natural Science Foundation of China [41002057]; CAS Strategic Priority Research Program Grant [XDA05130501]
公开日期	2014-12-12
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/5184]
专题	古脊椎动物与古人类研究所_古人类及旧石器研究室
通讯作者	Wang, CS (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Dept Sci Hist & Archaeometry, Beijing 100049, Peoples R China 3.Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yan,Yang, Yimin,Wang, Hua,et al. The effects of chemical composition and distribution on the preservation of phytolith morphology[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2014,114(2):503-507.
APA	Wu, Yan,Yang, Yimin,Wang, Hua,Wang, Changsui,&Wang, CS .(2014).The effects of chemical composition and distribution on the preservation of phytolith morphology.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,114(2),503-507.
MLA	Wu, Yan,et al."The effects of chemical composition and distribution on the preservation of phytolith morphology".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 114.2(2014):503-507.