id	keyword
amq-545	layer
amq-545	tephra
amq-545	campanian
amq-545	ignimbrite
amq-545	et al
amq-545	y-5
amq-545	y-3
amq-545	core
amq-545	c45
amq-545	eruption
amq-545	pumice
amq-545	fragments
amq-545	sample
amq-545	c106
amq-545	tyrrhenian