白垩纪
the Cretaceous period
Cretaceous period
the Cretaceous
Cretaceoua period
early cretaceous
cretaceous system
cretaceous
Yarlung Zangbo suture zone
Chishan formation
crestal well
Jurassic
白垩纪变革
Cretaceous transformation
白垩纪砂岩
Cretaceous period sandstone