id	keyword
amq-413	et al
amq-413	basin
amq-413	pliocene
amq-413	valdarno
amq-413	synthem
amq-413	del
amq-413	chianti
amq-413	pleistocene
amq-413	montevarchi
amq-413	ridge
amq-413	meleto
amq-413	fig
amq-413	geol
amq-413	apennines
amq-413	unconformity
amq-413	della
amq-413	sands
amq-413	units
amq-413	deposits
amq-413	soc
amq-413	area
amq-413	sediments
amq-413	coltorti
amq-413	italy
amq-413	siena
amq-413	northern