IODP SEDIS - Thesaurus -

chalk
BT	sedimentary rocks
	.carbonate rocks
	..chalk
RT	calcite
	limestone
	chalk deposits
SN	As of 1981, no longer a valid term for GeoRef. Use Upper Cretaceous for the age.

chalk deposits
RT	chalk
	limestone deposits

Chalk River
BT	Canada
	.Eastern Canada
	..Ontario
	...Chalk River
SN	Tributary of Ottawa River, SE Ontario. For the town, see Chalk River Ontario. Added to Thesaurus in 1985.

Chalk River Ontario
BT	Canada
	.Eastern Canada
	..Ontario
	...Renfrew County Ontario
	....Chalk River Ontario
SN	Town near Ottawa River in Renfrew County.

Chalkidiki
BT	Europe
	.Southern Europe
	..Greece
	...Greek Macedonia
	....Chalkidiki
UF	Chalcidice
	Khalkidhiki
RT	Salonika Greece
SN	Peninsula, S central Greek Macedonia. This term has multiple hierarchies.