Wang Yuanzhen, Tang Shaofan. THE STUDY OF CARBON ISOTOPE OF CARBOBITUMEN AND BONE COAL IN SOUTH CHINA[J]. 1986, 7(2): 192-196.DOI: 10.11743/ogg19860214.
C-value of carbobitumen from the Lower Paleozoic along the Jiangnan Uplift in the south of the Chang jiang River is generally about 28‰
which is very close to that of bone coal and carbonaceous shale from the Upper Sinian and the Lower Cambrian.This shows that they have close relations with each other.Carbobitumen from the Devonian in Hechi County
Guangxi
originated from Devonian sediments itself
which has something to do with the occurence of higher plants
δ
13
C-value of which is 6‰ heavier than that of the Lower Paleozoic carbobitumen.δ
13
C-Value of Lower Paleozoic carbobitumen is at least 7‰ lighter than that of humic coal in the same area
indicating that their origins are not guite the same.