Journal of Geoscience and Environment Protection

Volume 6, Issue 9 (September 2018)

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

Google-based Impact Factor: 1.37  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    756 Downloads   1,786 Views  Citations

ABSTRACT

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.

Share and Cite:

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.

Cited by

[1] Peculiarities of using classification indicators of the coal metamorphism degree for predicting the hazardous coal seams properties
2020
[2] ЩОДО ВИЗНАЧЕННЯ ПОКАЗНИКА КАРБОНІЗАЦІЇ ВУГІЛЛЯ ДЛЯ ВСТАНОВЛЕННЯ ГРУП ПОЖЕЖОНЕБЕЗПЕЧНОСТІ ШАХТОПЛАСТІВ
2020
[3] Raman spectrum characteristic and structural evolution of high rank coals-cryptocrystalline graphite
煤田地质与勘探, 2020
[4] 湖南省煤系石墨成矿规律与找矿方向探讨
煤田地质与勘探, 2020
[5] АНАЛИЗ МЕТАМОРФИЗМА И СКЛОННОСТИ КАМЕННЫХ УГЛЕЙ К САМОВОЗГОРАНИЮ
2020
[6] Raman spectrum characteristic and structural evolution of high rank coalscryptocrystalline graphite
Coal Geology & …, 2020
[7] Metallogenic law and prospecting direction of coal-based graphite in Hunan Province
Coal Geology & …, 2020
[8] 高煤级煤—隐晶质石墨的 Raman 光谱表征及结构演化
煤田地质与勘探, 2020
[9] Analysis of metamorphism and tendency of black coals to spontaneous combustion
2019

Copyright © 2025 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.