Table 4 The inertinite abundance and pO₂ characteristics in Early–Middle Jurassic coal-bearing strata in China. I_AVG: Mean inertinite abundance; N: Samples number; R: Percentage range; S: Standard deviation

 Yang 1996

3.5

2

2.8–4.2

0.7

21

Yongfeng Stage (Hettangian–Sinemurian)/Badaowan F./Karamay

Xinjiang

9.5

2

8.0–11.0

1.5

24

Yongfeng Stage (Hettangian–Sinemurian)/Badaowan F./Wusu

Xinjiang

14.8

5

11.0–18.4

2.4

26

Yongfeng Stage (Hettangian–Sinemurian)/Badaowan F./Changji

Xinjiang

3.3

3

2.6–4.8

1.0

21

Yongfeng Stage (Hettangian–Sinemurian)/Badaowan F./Baicheng

Xinjiang

39.5

3

38.0–40.5

1.1

29

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Hami Basin

Xinjiang

4.7

2

4.3–5.0

0.4

26

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Hami Basin

Xinjiang

36.5

3

24.3–43.1

8.7

29

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Yili Basin

Xinjiang

49.0

3

40.7–61.5

9.0

30

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Yili Basin

Xinjiang

18.3

3

13.6–21.8

3.5

26

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Baicheng

Xinjiang

34.1

4

23.3–44.5

9.8

28

Liuhuanggou Stage (Pliensbachian–Toarcian)/Xishanyao F./Tarim Basin

Xinjiang

20.4

1

27

Shihezi Stage (Aalenian–Bajocian)/Xiahuayuan F./Fangzi

Shandong

 Potential evaluation of coal resources in Hebei

39.1

5

11.3–71.9

21.4

29

Shihezi Stage (Aalenian–Bajocian)/Xiahuayuan F./Xuanhua

Hebei

 Yang 1996

19.7

3

15.0–24.0

3.7

26

Shihezi Stage (Aalenian–Bajocian)/Xintiangou F./Xiwan

Guangxi

19.0

1

26

Shihezi Stage (Aalenian–Bajocian)/Xintiangou F./Hualong

Zhejiang

35.0

2

10.0–59.9

25.0

28

Shihezi Stage (Aalenian–Bajocian)/Xintiangou F./Guangwang

Sichuan

71.5

2

69.1–81.5

7.3

31

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Dongsheng (Ordos Basin)

Inner Mongolia

31.9

2

28.4–35.4

3.5

28

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Dongsheng (Ordos Basin)

Inner Mongolia

50.3

4

48.1–54.3

2.5

30

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Ordos Basin

Shaanxi

57.6

4

38.6–73.8

14.5

30

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Lingyan area

Ningxia

56.3

4

46.7–69.8

9.3

30

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Huanglong Coalfield

Gansu

45.2

4

38.3–57.1

7.3

29

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Longdong Coalfield

Gansu

84.0

3

80.3–86.9

2.8

32

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Longdong Coalfield

Gansu

48.0

1

30

Shihezi Stage (Aalenian–Bajocian)/Yan’an F./Longdong Coalfield

Gansu

37.3

4

27.7–49.9

8.0

29

Shihezi Stage (Aalenian–Bajocian)/Datong F./Datong Basin

Shanxi

26.6

2

22.3–30.8

4.3

28

Shihezi Stage (Aalenian–Bajocian)/Yima F./Yima Basin

Henan

12.2

2

10.8–13.5

1.4

25

Shihezi Stage (Aalenian–Bajocian)/Xishanyao F./Junggar Basin

Xinjiang

29.8

4

24.6–36.6

4.3

28

Shihezi Stage (Aalenian–Bajocian)/Xishanyao F./Junggar Basin

Xinjiang

44.0

4

40.8–45.5

1.9

29

Shihezi Stage (Aalenian–Bajocian)/Xishanyao F./Tuha Basin

Xinjiang

50.7

3

47.0–55.1

3.3

30

Shihezi Stage (Aalenian–Bajocian)/Xishanyao F./Yili Basin

Xinjiang

68.1

3

57.2–77.8

8.4

31

Shihezi Stage (Aalenian–Bajocian)/Xishanyao F./Tarim Basin

Xinjiang

1.7

3

1.1–2.4

0.5

19

Shihezi Stage (Aalenian–Bajocian)/Yaojie F./Wuwei-Tianzhu Basin

Gansu

45.9

6

19.4–59.6

13.1

29

Manasi Stage (Bathonian–Callovian)/Toutunhe F./Minhe Basin

Qinghai

66.5

1

31

Manasi Stage (Bathonian–Callovian)/Toutunhe F./Minhe Basin

Qinghai

33.1

2

29.3–36.8

3.8

28

Manasi Stage (Bathonian–Callovian)/Toutunhe F./Minhe Basin

Qinghai

24.0

2

23.2–24.7

0.8

27

Manasi Stage (Bathonian–Callovian)/Toutunhe F./Minhe Basin

Qinghai