Structure of different types of coal metamorphism by HTEM

被引：4

作者：

Li X. ^{[1
,2
]}

Cao D. ^{[2
]}

Liu D. ^{[1
,2
]}

机构：

[1] College of Safety Engineering, North China Institute of Science and Technology

[2] College of Geoscience and Surveying Engineering, China University of Mining and Technology

来源：

Mining Science and Technology | 2010年 / 20卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Dabie orogenic belt; High-rank coal; High-resolution transmission electron microscopy; Tectonic stress;

D O I：

10.1016/S1674-5264(09)60291-X

中图分类号：

学科分类号：

摘要：

In order to discuss the effect of tectonic stress on the structural evolution of coal, given the importance attached to High-resolution Transmission Electron Microscopy (HTEM), we investigated several aspects of material structures of high-rank Carboniferous period coal, located in the northern foreland basin of the Dabie orogenic belt in eastern China. High powered crystal lattice images of Bright Fields (BF) and Selected Area Diffraction patterns (SAD) of different types of metamorphism in coal were obtained. The results show that the Basic Structural Units (BSU) become increasingly more compact as a function of rising temperature and pressure. Under pressure, the local orientation of molecules is strengthened, the arrangement of BSU speeds up and the degree of order is clearly enhanced. © 2010 China University of Mining and Technology.

引用

页码：835 / 838

页数：3

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