the compression, over time, of plant matter into coal
coalification in American English
(ˌkoʊləfɪˈkeɪʃən)
noun
the process by which vegetable matter is transformed into coal
Word origin
coal + -i- + -fication
coalification in American English
(ˌkouləfɪˈkeiʃən)
noun
Geology
the conversion of plant material into coal by natural processes, as by diagenesis and, in some instances, metamorphism
Word origin
[1910–15; coal + -i- + -fication]This word is first recorded in the period 1910–15. Other words that entered Englishat around the same time include: cat and mouse, coverage, grass roots, isotope, spotlight-i- is the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin,if the second element is of Latin origin. Other words that use the affix -i- include: Frenchify, cuneiform; -fication is a combining form of nouns of action or state corresponding to verbs ending in-fy. Other words that use the affix -fication include: deification, pacification
George E. Mustoe 2018, 'Non-Mineralized Fossil Wood', Geoscienceshttp://www.mdpi.com/2076-3263/8/6/223. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The coal structure changed dramatically in the first two coalification jumps, especially the first one.
Qiang Wei, Yuegang Tang 2018, '13C-NMR Study on Structure Evolution Characteristics of High-Organic-Sulfur Coalsfrom Typical Chinese Areas', Mineralshttp://www.mdpi.com/2075-163X/8/2/49. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Generally it can be said that floatability improves with increasing coalification.
Øepka Vlastimil 2003, 'Determination of optimum particle size in black coal flotation', Acta Montanistica Slovacahttp://actamont.tuke.sk/pdf/2003/n2-3/16repka.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The petrophysical properties of coal will vary during coalification, and thus affect the methane adsorption capacity.
Yingjin Wang, Dameng Liu, Yidong Cai, Xiawei Li 2019, 'Variation of Petrophysical Properties and Adsorption Capacity in Different Rank Coals:An Experimental Study of Coals from the Junggar, Ordos and Qinshui Basins in China',Energieshttp://www.mdpi.com/1996-1073/12/6/986. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Besides, the degree of aromatization of organic sulfur small molecules rises with increasing degree of coalification.
Lanjun Zhang, Zenghua Li, Yongliang Yang, Yinbo Zhou, Jinhu Li, Leilei Si, Biao Kong 2016, 'Research on the Composition and Distribution of Organic Sulfur in Coal', Moleculeshttp://www.mdpi.com/1420-3049/21/5/630. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This finding indicates that the coalification and maceral compositions have significant effects on the adsorption heat of coal for methane.
Yingke Liu, Jianhong Kang, Fubao Zhou, Yanming Fan, Haijian Li 2018, 'Effects of Maceral Compositions of Coal on Methane Adsorption Heat', Geofluidshttp://dx.doi.org/10.1155/2018/7596138. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)