id	keyword
gc-935	gneiss
gc-935	shirenshan
gc-935	shirenshan gneiss
gc-935	north
gc-935	group
gc-935	taihua
gc-935	granite
gc-935	block
gc-935	type
gc-935	china
gc-935	et al
gc-935	elements
gc-935	samples
gc-935	margin
gc-935	zircon
gc-935	age