IODP SEDIS - Thesaurus -

geoche

geochemical
SN	A valid term through 1977. See geochemical maps, geochemical methods, geochemical surveys.

geochemical background
SN	Not a valid term for GeoRef. See background level.

geochemical cycle
NT	carbon cycle
RT	carbon
	cycles
	Gaia hypothesis
	geochemistry
	metals
	migration of elements
	nitrogen
	oxygen
	sulfur
SN	Before 1982, search cycles AND geochemistry. Added to Thesaurus in 1982.

geochemical exploration
USE	geochemical methods

geochemical investigations
SN	Not a valid GeoRef index term after 1970. See geochemistry; geochemical methods, geochemical surveys.

geochemical logging
BT	well-logging
	.geochemical logging
UF	chemical logging
RT	geochemistry
	geophysical methods
	geochemical methods
	geochemical surveys
	downhole methods
	lithogeochemistry
	geochemical profiles
SN	Also search geochemical methods and well-logging for methods studies. Added to Thesaurus in 1995.

geochemical maps
BT	maps
	.geochemical maps
SN	Before 1978, search maps AND geochemical.

geochemical methods
NT	biogeochemical methods
UF	geochemical exploration
	geochemical prospecting
RT	geochemistry
	chemical analysis
	automated analysis
	methods
	haloes
	geochemical surveys
	Bear-Slave Operation
	mineral exploration
	geobotanical methods
	exploration
	dispersion patterns
	radon emanometry
	geochemical logging
	soil gases
	pathfinders
SN	From 1993-1997, restricted to economic studies. Before 1993, also search lithogeochemical methods if applicable. Also see geochemical surveys.

geochemical models
SN	Not a valid term for GeoRef. Use geochemistry in combination with models. Also use specific names of the geochemical models if available.

Geochemical Ocean Sections Program
USE	GEOSECS

geochemical profiles
RT	chemical analysis
	geochemical logging
	geochemistry
SN	Before 1981, search profiles AND geochemistry. Added to Thesaurus in 1981.

geochemical prospecting
USE	geochemical methods

geochemical surveys
BT	surveys
	.geochemical surveys
RT	geochemistry
	background level
	geochemical methods
	detection limit
	mineral exploration
	geochemical indicators
	chemical composition
	geochemical logging
	lake sediments
	stream sediments
SN	For economic geology, also see geochemical methods, biogeochemical methods.

geochemistry
NT	lithogeochemistry
RT	absolute age
	absorption
	activity
	adsorption
	advection
	alanine
	alkalinity
	alumina
	ammonia compound
	ammonium
	ammonium ion
	anions
	aqueous solutions
	atmosphere
	background level
	basin analysis
	bicarbonate ion
	biochemistry
	biogeochemical methods
	buffers
	calcium
SN	Used for broad treatments as well as specific experiments.

Geochemistry (category)
SN	Geochemistry, GeoRef category code 02, is one of thirty categories used to classify documents in GeoRef. Each reference in GeoRef is assigned one or more categories. Categories can be used, in addition to Terms, to refine searches (See List A.).