the background of the formation of Dahala Junshan volcanic rock
Member 4 of Quantou Formation -Yaojia Formation
Background field and Background value
“One step process” formation
1 st member of Shahejie Formation
1-2 member of Xujiahe Formation
1st member of Nenjiang Formation
Ⅰ oil formation in Xing’anling Group
2(superscript nd) member of Shanxi Formation
2~nd member of Xujiahe formation
2nd member of Shanxi Formation
2nd member of Xujiahe Formation
3(superscript rd) Member of Shahejie Formation
3rd member of Quantou Formation
3rd member of Shahejie Formation
3rd member of the Lingshui formation