中国陆域冻土区浅表烃类地球化学特征及其成因分析

杨志斌, 周亚龙, 张富贵, 张舜尧, 孙忠军

Geochemical characteristics and genesis of hydrocarbons in superficial soil in continental permafrost regions in China

YANG Zhi-Bin, ZHOU Ya-Long, ZHANG Fu-Gui, ZHANG Shun-Yao, SUN Zhong-Jun

图5 羌塘盆地和祁连山木里地区土壤酸解烃C₁/(C₂+C₃)- δ¹³C₁交汇图(据戴金星^[14]修改)
Ⅰ¹ —生物气;Ⅰ²—生物气和亚生物气; Ⅰ³—亚生物气;Ⅱ¹—原油伴生气;Ⅱ²—油型裂解气;Ⅲ¹—油型裂解气和煤成气;Ⅲ²—凝析油伴生气和煤成气;Ⅳ—煤成气;Ⅴ¹—无机气;Ⅴ²—无机气和煤成气;

—羌塘盆地检测点;

—祁连山地区检测点

Fig.5 Relationships of C₁/(C₂+C₃) and δ¹³C₁ in acidolysis soil from Qiangtang Basin and Muli area (modified according to Dai J X^[14])
Ⅰ¹—biogas;Ⅰ²—biogas and sub-biogas;Ⅰ³—sub-biogas;Ⅱ¹—oil-associated gas;Ⅱ²—oil cracking gas;Ⅲ¹—oil cracking gas and coal gas;Ⅲ²—condensate oil-associated gas and coal gas;Ⅳ—coal gas;Ⅴ¹—inorganic gas;Ⅴ²—inorganic gas and coal gas;

—detection point of Qiangtang Basin;

—detection point of Qilian mountain