id	keyword
esrj-54142	et al
esrj-54142	ordovician
esrj-54142	tarim
esrj-54142	basin
esrj-54142	chinese
esrj-54142	formation
esrj-54142	karst
esrj-54142	slope
esrj-54142	paleokarst
esrj-54142	isotope
esrj-54142	characteristics
esrj-54142	carbonatite
esrj-54142	values
esrj-54142	exploration
esrj-54142	abstract
esrj-54142	maigaiti
esrj-54142	english
esrj-54142	environment
esrj-54142	gas
esrj-54142	marine
esrj-54142	oil