id	keyword
geusb-4920	age
geusb-4920	greenland
geusb-4920	rinkian
geusb-4920	hornblende
geusb-4920	belt
geusb-4920	ages
geusb-4920	muscovite
geusb-4920	nagssugtoqidian
geusb-4920	40ar/39ar
geusb-4920	fig