GYIG OpenIR  > 地球内部物质高温高压实验室
Effect of temperature, pressure and chemical compositions on the electrical conductivity of schist: Implications for electrical structures under the Tibetan plateau
Wenqing Sun;  Lidong Dai;  Heping Li;  Haiying Hu;  Changcai Liu;  Mengqi Wang
2019
Source PublicationMaterials
Volume12Issue:6Pages:1-14
Abstract

The experimental study on the electrical conductivities of schists with various contents of alkali ions (CA = K₂O + Na₂O = 3.94, 5.17, and 5.78 wt.%) were performed at high temperatures (623⁻1073 K) and high pressures (0.5⁻2.5 GPa). Experimental results indicated that the conductivities of schist markedly increased with the rise of temperature. Pressure influence on the conductivities of schist was extremely weak at the entire range of experimental temperatures. Alkali ion content has a significant influence on the conductivities of the schist samples in a lower temperature range (623⁻773 K), and the influence gradually decreases with increasing temperature in a higher temperature range (823⁻1073 K). In addition, the activation enthalpies for the conductivities of three schist samples were fitted as being 44.16⁻61.44 kJ/mol. Based on the activation enthalpies and previous studies, impurity alkaline ions (K⁺ and Na⁺) were proposed as the charge carriers of schist. Furthermore, electrical conductivities of schist (10-3.5⁻10-1.5 S/m) were lower than those of high-conductivity layers under the Tibetan Plateau (10-1⁻10⁰ S/m). It was implied that the presence of schist cannot cause the high-conductivity anomalies in the middle to lower crust beneath the Tibetan Plateau.

KeywordTibetan Plateau Chemical Compositions Conduction Mechanism Electrical Conductivity High Pressure Schist.
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10451
Collection地球内部物质高温高压实验室
Affiliation1.Effect of Temperature, Pressure, and Chemical Composition on the Electrical Conductivity of Schist: Implications for Electrical Structures under the Tibetan Plateau
2.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang. Effect of temperature, pressure and chemical compositions on the electrical conductivity of schist: Implications for electrical structures under the Tibetan plateau[J]. Materials,2019,12(6):1-14.
APA Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang.(2019).Effect of temperature, pressure and chemical compositions on the electrical conductivity of schist: Implications for electrical structures under the Tibetan plateau.Materials,12(6),1-14.
MLA Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang."Effect of temperature, pressure and chemical compositions on the electrical conductivity of schist: Implications for electrical structures under the Tibetan plateau".Materials 12.6(2019):1-14.
Files in This Item: Download All
File Name/Size DocType Version Access License
Effect of temperatur(2960KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wenqing Sun;Lidong Dai;Heping Li;Haiying Hu;Changcai Liu;Mengqi Wang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Effect of temperature, pressure and chemical composition on the__electrical conductivity of granulite and geophysical implications.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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