IODP SEDIS - Thesaurus -

Rio Negro
UF	Negro River
RT	Brazil
	South America
	Colombia
	Venezuela
	Amazonas Venezuela
SN	River in NW South America. Flows into the Amazon River. Also occurs in numerous other locations. Search in combination with country. Indexed with countries or continent as applicable.

Rio Negro Argentina
BT	South America
	.Argentina
	..Rio Negro Argentina
RT	Patagonia
	Neuquen Basin
SN	Province in central Argentina.

Rio Negro Meteorite
BT	meteorites
	.stony meteorites
	..chondrites
	...L chondrites
	....Rio Negro Meteorite
RT	Brazil
SN	Impact in Brazil. Added to Thesaurus in 1981.