IODP SEDIS - Thesaurus -

Er
USE	erbium

Er Rif
USE	Rif

Er Riff
USE	Rif

Erath County Texas
BT	United States
	.Texas
	..Erath County Texas

Eratosthenian
RT	Moon
SN	Lunar stratigraphy. Eratosthenian rocks are older than those of the Copernican System but younger than those of the Imbrian System.

erbium
BT	metals
	.rare earths
	..erbium
UF	Er

Erduos Basin
USE	Ordos Basin

Erevan Armenia
USE	Yerevan Armenia

Erfurt Bezirk
SN	No longer a valid term for GeoRef. See Thuringia Germany. Used for the district in SW East Germany.

Erfurt Germany
BT	Europe
	.Central Europe
	..Germany
	...Thuringia Germany
	....Erfurt Germany
SN	City in Thuringia, central Germany. As of 1981, Erfurt refers to only the city in Germany. Before 1981, it also included the East German district.

ergroup#Bluebell Mine#Bluesky Formation#Bonanza Group#Border Ranges Fault#Bowser

ergs
BT	eolian features
	.ergs
RT	Sahara
	sand
	dunes
	deserts
	sand ridges
	sedimentary structures
	sand seas
	sand sheets
SN	Added to Thesaurus in 1993.

Ericaceae
BT	Plantae
	.Spermatophyta
	..Angiospermae
	...Dicotyledoneae
	....Ericaceae
SN	Family.

Eridostraca
BT	Invertebrata
	.Arthropoda
	..Mandibulata
	...Crustacea
	....Ostracoda
	.....Eridostraca
RT	microfossils
SN	Includes Superfamily Leperditellacea. Indexed with microfossils if applicable.

Erie County New York
BT	United States
	.New York
	..Erie County New York
SN	W New York.

Erie County Ohio
BT	United States
	.Ohio
	..Erie County Ohio
SN	N Ohio.

Erie County Pennsylvania
BT	United States
	.Pennsylvania
	..Erie County Pennsylvania
NT	Presque Isle
SN	NW Pennsylvania.

Erimo Seamount
BT	Pacific Ocean
	.North Pacific
	..Northwest Pacific
	...Erimo Seamount
RT	Japan Trench
	Kuril Trench
SN	Off S coast of Hokkaido, Japan. This term has multiple hierarchies.

erionite
BT	silicates
	.framework silicates
	..zeolite group
	...erionite

Eritrea
BT	Africa
	.East Africa
	..Eritrea
RT	Ethiopia
	Afar
	Afar Depression
	East African Rift
	Red Sea Basin
	Ethiopian Rift
	Nubian Shield
SN	E Africa on the Red Sea. Used in subfile G. Ethiopia was used for this term between 1972 and 1994. Added to Thesaurus in 1995.

Erivan Armenia
USE	Yerevan Armenia

Erlangen Germany
BT	Europe
	.Central Europe
	..Germany
	...Bavaria Germany
	....Erlangen Germany
SN	City in N central Bavaria.

erodability
USE	erodibility

erodibility
UF	erodability
	erosibility
RT	erosion
	Universal Soil Loss Equation
SN	A measurement of the tendency for or degree of a material to erode.

Eromanga Basin
BT	Australasia
	.Australia
	..Queensland Australia
	...Eromanga Basin
RT	Birkhead Formation
SN	In SW Queensland.

Eros Asteroid
BT	asteroids
	.S-type asteroids
	..Eros Asteroid
UF	433 Eros
RT	NEAR Program
SN	Object of NEAR Program study.

erosi

erosibility
USE	erodibility

erosion
NT	bioerosion
	glacial erosion
	littoral erosion
	planation
	scour
	sheet erosion
	soil erosion
	water erosion
	wind erosion
RT	abrasion
	avulsion
	beach profiles
	climatic controls
	corrosion
	CREAMS
	degradation
	denudation
	detritus
	erodibility
	erosion control
	erosion cycle
	erosion features
	erosion rates
	erosion surfaces
	erosional unconformities
	etching
	exfoliation
	exhumation
	fires
	geo

erosion control
UF	control, erosion
RT	wind erosion
	erosion
	soils
	GLEAMS
	conservation
	beach nourishment
	beach profiles
	riprap
	controls
	soil erosion
	water erosion
	geomembranes
	geotextiles

erosion cycle
RT	cycles
	erosion
	geomorphology
	landform evolution
	peneplains
SN	Added to Thesaurus in 1982.

erosion features
NT	arroyos
	badlands
	cuestas
	erosion surfaces
	gullies
	inselbergs
	mesas
	pediments
	peneplains
	talus slopes
UF	erosion forms
	erosional features
	features, erosion
RT	erosion
	plains
	geomorphology
	klippen
	colluvium
	berms
	benches
	terraces
	blowouts
	bluffs
	cliffs
	furrows
	boulders
	natural curiosities
	exhumation
	valleys
	knickpoints
	rills
	scarps
	denudation
	volcanic necks
	dry valleys
	highlands
	inliers
	outliers
	potholes
	tors
	wa

erosion forms
USE	erosion features

erosion rates
RT	bioerosion
	erosion
	land loss
	rates
	resurfacing
	sedimentation
	soil erosion
	soils
	sediment transport
SN	Before 1993, also search erosion AND rates. Added to Thesaurus in 1993.

erosion surfaces
BT	erosion features
	.erosion surfaces
NT	pediplains
UF	planation surfaces
	surfaces, erosion
RT	erosion
	planation
	geomorphology
	wave-cut platforms
	resurfacing
	peneplains
	pediments

erosion transport
SN	As of 1993, not a valid term for GeoRef. See sediment transport.

erosional features
USE	erosion features

erosional unconformities
BT	unconformities
	.erosional unconformities
UF	disconformities
RT	erosion
	exhumation
SN	Added to Thesaurus in 1982.

erratic blocks
USE	erratics

erratic boulders
USE	erratics

erratics
BT	sediments
	.clastic sediments
	..erratics
UF	erratic blocks
	erratic boulders
RT	glacial geology
	glaciers
	glacial features
	boulders
	glacial transport

errors
RT	accuracy
	corrections
	maximum likelihood
	precision
	reliability
	uncertainty
SN	Used as a general term.

ERS-1
UF	ERS1
	European Remote Sensing satellite 1
RT	remote sensing
	infrared methods
	satellite methods
	radar methods
	microwave methods
SN	European Space Agency remote sensing satellite launched 1991. Includes microwave, radar altimetry, and infrared radiometry instrumentation. Also index specific geophysical methods as applicable. Added to Thesaurus in 1998.

ERS1
USE	ERS-1

Ertix River
USE	Irtysh River

ERTS
SN	A valid term through 1977. After 1977, use Landsat.

ERTS-1
SN	A valid term through 1977. After 1977, use Landsat.

erubescite
USE	bornite

eruption clouds
USE	ash clouds

eruptions
RT	atmospheric transport
	explosive eruptions
	hawaiian-type eruptions
	lava
	nuees ardentes
	plinian-type eruptions
	pyroclastics
	radon emanometry
	strombolian-type eruptions
	volcanic earthquakes
	volcanic risk
	volcanism
	volcanoes
	volcanology
	vulcanian-type eruptio

eruptive rocks
USE	volcanic rocks

Ervine Creek Limestone
BT	Chronostratigraphic Units
	.Phanerozoic
	..Paleozoic
	...Carboniferous
	....Pennsylvanian
	.....Upper Pennsylvanian
	......Virgilian
	.......Ervine Creek Limestone
RT	Iowa
	Missouri
	Nebraska
	Kansas
SN	Of Deer Creek Limestone. SW Iowa, NE Kansas, NW Missouri and SE Nebraska.

Erzgebirge
BT	Europe
	.Central Europe
	..Erzgebirge
NT	Czech Erzgebirge
UF	Krusne Hory
	Krusnehory Mountains
	Krusny Hory Mountains
RT	Saxony Germany
	Czech Republic
	Bohemia
SN	Mountain range on the border of Saxony, Germany and Bohemia. Indexed with countries as applicable.

Erzincan earthquake 1992
BT	earthquakes
	.Erzincan earthquake 1992
RT	Turkey
SN	Epicenter in Erzincan Province, E central Turkey. Added to Thesaurus in 1998.