Journal of Geoscience and Environment Protection

Volume 6, Issue 9 (September 2018)

ISSN Print: 2327-4336   ISSN Online: 2327-4344

Google-based Impact Factor: 0.98  Citations  

Coal Deformation, Metamorphism and Tectonic Environment in Xinhua, Hunan

HTML  XML Download Download as PDF (Size: 2757KB)  PP. 170-182  
DOI: 10.4236/gep.2018.69013    340 Downloads   569 Views   Citations


This article discusses in detail chemical composition, molecular structure, microstructure phenomena, estimate of the palaeo-stress, paleo-temperature and the strain rate to deepen the knowledge for the correlation of coal deformation and metamorphism with structural environment in Xinhua Hunan by coal quality analysis, XRD and SEM methods, which provide dependable theoretical foundation for coal resource exploitation and utilization. The results show that 1) d002 value of six coal samples is from 3.36 to 3.39 nm, coal resolved itself into aphanitic graphite with the increase of coal rank during coalification, which is characterized by graphite flakes, and the crystallite size is from 50 nm to 250 nm; A certain degree of 3R-structure content is increases and the crystallite size is extend with the coalification process, but RH-structure content is decreased; 2) the tectonic environment of research area belongs to the ductile-brittle deformation, which was characterized by low temperature, low stress, high strain rate; 3) Tianlongshan magmatic intrusion provided heat source, its side-extrusion made the molecules structure of coal ordering, distance between layers decreased, finally it caused the formation of aphanitic graphite.

Cite this paper

Li, H. , Zou, X. , Mo, J. , Wang, Y. and Chen, F. (2018) Coal Deformation, Metamorphism and Tectonic Environment in Xinhua, Hunan. Journal of Geoscience and Environment Protection, 6, 170-182. doi: 10.4236/gep.2018.69013.

Copyright © 2020 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.