id	keyword
geusb-4223	sandstones
geusb-4223	microquartz
geusb-4223	porosity
geusb-4223	coatings
geusb-4223	fig
geusb-4223	formation
geusb-4223	central
geusb-4223	danish
geusb-4223	spicules
geusb-4223	sponge