鄂尔多斯盆地东部石炭系本溪组泥页岩地球化学特征及沉积环境

张力文,吴陈君,黄道军,文志刚,赵伟波,席颖洋,张辉,孙璐,宋换新

Geochemical characteristics and sedimentary environment of Carboniferous Benxi Formation in eastern Ordos Basin

Liwen ZHANG,Chenjun WU,Daojun HUANG,Zhigang WEN,Weibo ZHAO,Yingyang XI,Hui ZHANG,Lu SUN,Huanxin SONG

表2 重点井及剖面地球化学参数与矿物含量

Table 2 Geochemical indicators and mineral content of key wells and profile

剖面/井	地层	石英含量/%	黏土总量/%	Sr/Ba	Th/U	Rb/Zr
Q36井	晋祠段	$\frac{6.9 ~ 47}{27.6 (8)}$	$\frac{43.1 ~ 87.5}{58.1 (8)}$	$\frac{0.51 ~ 1.24}{0.95 (6)}$	$\frac{0.31 ~ 6.3}{2.36 (6)}$	$\frac{0.03 ~ 0.89}{0.47 (6)}$
	畔沟段	$\frac{1.2 ~ 52}{31.8 (4)}$	$\frac{47 ~ 97.3}{65.4 (4)}$	$\frac{0.56 ~ 0.82}{0.68 (4)}$	$\frac{2.85 ~ 7.03}{5.51 (4)}$	$\frac{0.54 ~ 0.67}{0.6 (4)}$
	湖田段	$\frac{0}{0 (4)}$	$\frac{87.9 ~ 99.2}{93.2 (4)}$	$\frac{1.04 ~ 6.9}{3.54 (4)}$	$\frac{2.66 ~ 3.6}{3.58 (4)}$	$\frac{0.01 ~ 0.22}{0.08 (4)}$
M115井	晋祠段	$\frac{8 ~ 57}{30.6 (11)}$	$\frac{32.3 ~ 88.5}{59.9 (11)}$	$\frac{0.64 ~ 2.5}{1.68 (5)}$	$\frac{1.98 ~ 4.97}{3.43 (5)}$	$\frac{0.16 ~ 0.96}{0.59 (5)}$
	畔沟段	$\frac{8.6 ~ 37.1}{24.9 (7)}$	$\frac{61.8 ~ 90.7}{72.2 (7)}$	$\frac{1.13 ~ 2.21}{1.59 (6)}$	$\frac{1.55 ~ 3.31}{2.57 (6)}$	$\frac{0.34 ~ 0.82}{0.46 (6)}$
	湖田段	$\frac{2.3 ~ 48.6}{12.8 (7)}$	$\frac{44.1 ~ 96}{79.1 (7)}$	$\frac{1.17 ~ 2.87}{1.71 (7)}$	$\frac{1.69 ~ 4.43}{2.86 (7)}$	$\frac{0.1 ~ 0.82}{0.3 (7)}$
招贤剖面	晋祠段	$\frac{32 ~ 69.5}{54.3 (12)}$	$\frac{29 ~ 56.9}{41.5 (12)}$	$\frac{0.09 ~ 1.61}{0.97 (12)}$	$\frac{3.21 ~ 6.78}{4.54 (12)}$	$\frac{0.37 ~ 1.01}{0.58 (12)}$
	畔沟段	$\frac{66.1}{66.1 (1)}$	$\frac{31.4}{31.4 (1)}$	$\frac{0.75}{0.75 (1)}$	$\frac{1.15}{1.15 (1)}$	$\frac{0.07}{0.07 (1)}$
	湖田段	$\frac{1.4 ~ 6.9}{4.2 (2)}$	$\frac{31.6 ~ 97.8}{15.3 (2)}$	$\frac{2.18 ~ 5.15}{3.66 (2)}$	$\frac{2.47 ~ 3.02}{2.75 (2)}$	$\frac{0.06 ~ 0.16}{0.11 (2)}$