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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Central Africa
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Angola (1)
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Congo Basin (1)
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Congo Craton (1)
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East Africa
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Ethiopia (2)
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Kenya
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Lake Magadi (1)
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Lake Natron (1)
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East African Lakes
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Kalahari Desert (1)
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North Africa
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Egypt
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Libya (1)
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Sahara (1)
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West Africa
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Asia
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Far East
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Indonesia
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Japan
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South Atlantic
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Australasia
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Western Canada
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Central America
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Coast Ranges (111)
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Commonwealth of Independent States
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Kazakhstan
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Lake Balkhash (1)
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Russian Federation
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Novaya Zemlya (2)
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Murmansk Russian Federation
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Polar Urals (1)
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Siberian Platform
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Turkmenia (1)
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Urals
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Cook Inlet (1)
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East Pacific Ocean Islands
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Eel River basin (3)
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Emerson Fault (1)
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Europe
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Alps
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Western Alps (2)
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Central Europe
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Germany
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Hungary (1)
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Poland
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Dolnoslaskie Poland
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Legnica-Glogow mining district (1)
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Switzerland
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Upper Rhine Graben (1)
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Vienna Basin (2)
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Murmansk Russian Federation
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Khibiny Mountains (2)
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Pannonian Basin (1)
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Southern Europe
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Bulgaria (1)
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Greece
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Greek Aegean Islands
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Peloponnesus Greece (1)
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Iberian Peninsula
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Portugal
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Panasqueira Portugal (1)
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Spain
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Betic Cordillera (1)
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Italy
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Lipari Islands
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Tuscany Italy
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Romania (1)
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Western Europe
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France
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Iceland (2)
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United Kingdom
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England
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Scotland
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Moine thrust zone (1)
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Fire Island (1)
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Imperial Valley (35)
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Indian Ocean
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Malay Archipelago
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Marble Canyon (1)
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Marble Mountains (3)
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Mediterranean region
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Mediterranean Sea
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Basin and Range Province
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Pacific Coast (45)
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Pacific region
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Peninsular Ranges (13)
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San Fernando California (1)
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Santa Monica Bay (6)
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Madera County California (22)
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Marin County California
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Point Reyes (1)
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Mariposa County California (37)
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Brachiopoda
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Spiriferida
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Ostreoidea
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Pterioida
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Pliocene
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upper Pliocene (5)
-
-
Purisima Formation (1)
-
Sisquoc Formation (1)
-
upper Neogene (2)
-
-
Paleogene
-
Eocene
-
Green River Formation (2)
-
lower Eocene (3)
-
middle Eocene
-
Ulatisian (5)
-
-
Narizian (6)
-
upper Eocene
-
Poway Conglomerate (3)
-
Tejon Formation (3)
-
-
-
lower Paleogene (1)
-
Oligocene
-
Fish Canyon Tuff (1)
-
Fontainebleau Sandstone (1)
-
upper Oligocene (2)
-
-
Paleocene
-
lower Paleocene
-
Danian (3)
-
-
upper Paleocene (2)
-
-
Refugian (3)
-
Santa Susana Formation (2)
-
Sespe Formation (8)
-
-
upper Tertiary (4)
-
Vaqueros Formation (5)
-
-
Tulare Formation (7)
-
upper Cenozoic
-
Pico Formation (4)
-
-
Wildcat Group (1)
-
Yakataga Formation (2)
-
-
Lake Bonneville (1)
-
Mesozoic
-
Cretaceous
-
Calera Limestone (3)
-
Comanchean
-
Travis Peak Formation (1)
-
-
Lower Cretaceous
-
Albian (3)
-
Aptian (2)
-
Berriasian (2)
-
Travis Peak Formation (1)
-
Valanginian (1)
-
-
Middle Cretaceous (7)
-
Queen Charlotte Group (1)
-
Upper Cretaceous
-
Campanian (9)
-
Cenomanian (4)
-
Coniacian (3)
-
Forbes Formation (3)
-
Gulfian
-
Austin Chalk (1)
-
Eagle Ford Formation (2)
-
-
Hornbrook Formation (1)
-
Ladd Formation (2)
-
Maestrichtian
-
upper Maestrichtian (1)
-
-
Marca Shale Member (3)
-
Moreno Formation (13)
-
Niobrara Formation (1)
-
Point Loma Formation (1)
-
Rosario Formation (3)
-
Santonian (4)
-
Senonian (18)
-
Tuolumne Intrusive Suite (26)
-
Turonian (4)
-
-
-
Franciscan Complex (88)
-
Great Valley Sequence (45)
-
Jurassic
-
Aztec Sandstone (1)
-
Coast Range Ophiolite (7)
-
Lower Jurassic
-
middle Liassic (1)
-
Pliensbachian (1)
-
-
Middle Jurassic
-
Bajocian (2)
-
Callovian (1)
-
-
Smartville Complex (5)
-
Upper Jurassic
-
Entrada Sandstone (1)
-
Galice Formation (1)
-
Josephine Ophiolite (2)
-
Kimmeridgian (2)
-
Naknek Formation (1)
-
Oxfordian (2)
-
Portlandian (3)
-
Smackover Formation (1)
-
Tithonian (5)
-
-
-
lower Mesozoic (11)
-
McHugh Complex (1)
-
middle Mesozoic (1)
-
Navajo Sandstone (1)
-
Orocopia Schist (1)
-
Triassic
-
Lower Triassic (1)
-
Upper Triassic
-
Norian (1)
-
-
-
upper Mesozoic (6)
-
-
Paleozoic
-
Bird Spring Formation (1)
-
Cambrian
-
Bonanza King Formation (2)
-
Carrara Formation (3)
-
Lower Cambrian
-
Poleta Formation (1)
-
Tommotian (1)
-
Zabriskie Quartzite (4)
-
-
Middle Cambrian
-
Flathead Sandstone (1)
-
-
Upper Cambrian
-
Dunderberg Shale (1)
-
Nopah Formation (1)
-
-
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (1)
-
-
Mississippian
-
Barnett Shale (1)
-
Lower Mississippian (1)
-
-
Pennsylvanian (6)
-
-
Devonian
-
Lost Burro Formation (1)
-
Lower Devonian
-
Littleton Formation (1)
-
-
Middle Devonian
-
Balaklala Rhyolite (2)
-
Copley Greenstone (2)
-
Eifelian (1)
-
Marcellus Shale (2)
-
-
Upper Devonian (4)
-
-
Hidden Valley Dolomite (1)
-
lower Paleozoic
-
Wilmington Complex (1)
-
-
middle Paleozoic (1)
-
New Albany Shale (1)
-
Ordovician
-
Antelope Valley Limestone (1)
-
Eureka Quartzite (2)
-
Lower Ordovician (3)
-
Middle Ordovician (3)
-
Upper Ordovician
-
Ashgillian (1)
-
-
-
Permian
-
Coconino Sandstone (1)
-
Lower Permian
-
Leonardian (2)
-
Wolfcampian
-
Hueco Limestone (1)
-
-
-
McCloud Limestone (6)
-
Middle Permian (1)
-
Rotliegendes (1)
-
Upper Permian (1)
-
-
Sauk Sequence (1)
-
Shoo Fly Complex (5)
-
Silurian
-
Lower Silurian
-
Tuscarora Formation (1)
-
-
Middle Silurian
-
Keefer Sandstone (1)
-
-
-
upper Paleozoic
-
Bakken Formation (1)
-
Calaveras Formation (3)
-
-
-
Phanerozoic (8)
-
Precambrian
-
Archean
-
Kalgoorlie System (1)
-
Paleoarchean (1)
-
-
Chuar Group (1)
-
Hadean (1)
-
Johnnie Formation (2)
-
Kingston Peak Formation (3)
-
Nonesuch Shale (2)
-
Noonday Dolomite (1)
-
Pahrump Series (3)
-
Stirling Quartzite (6)
-
Uinta Mountain Group (1)
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic
-
Belt Supergroup (1)
-
-
Neoproterozoic
-
Ediacaran (2)
-
Marinoan (1)
-
McCoy Creek Group (1)
-
Otavi Group (1)
-
Sturtian (1)
-
Tonian (1)
-
-
Paleoproterozoic (3)
-
Windermere System (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (6)
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granophyre (2)
-
hypabyssal rocks (2)
-
plutonic rocks
-
anorthosite (1)
-
diabase (1)
-
diorites
-
quartz diorites (7)
-
tonalite (13)
-
trondhjemite (2)
-
-
gabbros (24)
-
granites
-
adamellite (1)
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aplite (3)
-
biotite granite (2)
-
felsite (1)
-
granite porphyry (3)
-
graphic granite (1)
-
leucogranite (2)
-
monzogranite (1)
-
-
granodiorites
-
granodiorite porphyry (1)
-
-
lamprophyres (1)
-
monzodiorite (2)
-
monzonites (2)
-
pegmatite (9)
-
quartz monzonite (5)
-
syenites
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albitite (1)
-
shonkinite (1)
-
-
ultramafics
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chromitite (1)
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peridotites
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dunite (4)
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harzburgite (5)
-
lherzolite (6)
-
spinel lherzolite (1)
-
-
pyroxenite
-
orthopyroxenite (1)
-
-
-
-
porphyry (9)
-
volcanic rocks
-
andesites
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boninite (1)
-
-
basalts
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alkali basalts
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trachybasalts (2)
-
-
mid-ocean ridge basalts (6)
-
olivine tholeiite (1)
-
tholeiite (4)
-
-
dacites (3)
-
glasses
-
obsidian (3)
-
perlite (1)
-
volcanic glass (5)
-
-
phonolites (2)
-
pyroclastics
-
ash-flow tuff (12)
-
ignimbrite (4)
-
pumice (5)
-
rhyolite tuff (2)
-
tuff (15)
-
welded tuff (1)
-
-
quartz latite (1)
-
rhyodacites (1)
-
rhyolites (10)
-
trachyandesites (5)
-
trachytes (1)
-
-
-
ophiolite (33)
-
pyrolite (1)
-
volcanic ash (4)
-
wehrlite (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
amphibolites (10)
-
cataclasites (2)
-
eclogite (5)
-
gneisses
-
granite gneiss (2)
-
orthogneiss (1)
-
-
granulites (2)
-
hornfels (2)
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jadeitite (2)
-
marbles
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ophicalcite (1)
-
-
metaigneous rocks
-
metabasalt (6)
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metabasite (2)
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metadiorite (1)
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metagabbro (1)
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metagranite (1)
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serpentinite (22)
-
-
metaplutonic rocks (3)
-
metasedimentary rocks
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metachert (1)
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metaconglomerate (7)
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metagraywacke (9)
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metalimestone (1)
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metapelite (2)
-
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metasomatic rocks
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greisen (1)
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serpentinite (22)
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skarn (8)
-
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metavolcanic rocks (19)
-
migmatites (1)
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mylonites
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pseudotachylite (2)
-
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phyllites (4)
-
quartzites (10)
-
schists
-
blueschist (10)
-
glaucophane schist (3)
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greenschist (2)
-
greenstone (3)
-
-
slates (4)
-
-
ophiolite (33)
-
turbidite (26)
-
-
meteorites
-
meteorites (1)
-
-
minerals
-
alloys
-
awaruite (1)
-
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amosite (1)
-
arsenates
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adamite (1)
-
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arsenides
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arsenopyrite (1)
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maucherite (1)
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arsenites (1)
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borates
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borax (2)
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colemanite (1)
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ludwigite (3)
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ulexite (2)
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vonsenite (1)
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carbonates
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aragonite (1)
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artinite (1)
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bastnaesite (1)
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calcite (8)
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dolomite (11)
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gaylussite (1)
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huntite (1)
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ikaite (3)
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magnesian calcite (1)
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magnesite (1)
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nahcolite (1)
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parisite (1)
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pyroaurite (1)
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rhodochrosite (2)
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synchysite (1)
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thaumasite (1)
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trona (1)
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witherite (1)
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chromates (3)
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halides
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bromides (1)
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chlorides (3)
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fluorides
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bastnaesite (1)
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fluorite (2)
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parisite (1)
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synchysite (1)
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topaz (1)
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iodides (2)
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hydrates (4)
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minerals (60)
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molybdates
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powellite (1)
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wulfenite (1)
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native elements
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diamond (1)
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graphite (2)
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nitrates (1)
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organic minerals (1)
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oxides
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aluminum oxides (2)
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birnessite (1)
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brannerite (2)
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brucite (1)
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chromite (1)
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geikielite (1)
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hematite (1)
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hydroxides (2)
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ilmenite (5)
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iron oxides (1)
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magnetite (5)
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niobates
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samarskite (1)
-
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periclase (1)
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perovskite (3)
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pitchblende (1)
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rutile (1)
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spinel (2)
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tantalates
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microlite (1)
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-
titanium oxides (1)
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uraninite (1)
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valentinite (1)
-
-
phosphates
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apatite (11)
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hureaulite (1)
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hydroxylapatite (1)
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monazite (6)
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monetite (1)
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newberyite (1)
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struvite (1)
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xenotime (1)
-
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platinum minerals (1)
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selenates (1)
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silicates
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asbestos (9)
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barium silicates (1)
-
chain silicates
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amphibole group
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clinoamphibole
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glaucophane (5)
-
hornblende (15)
-
kaersutite (1)
-
nephrite (1)
-
tremolite (3)
-
-
-
astrophyllite (1)
-
bavenite (1)
-
charoite (1)
-
deerite (1)
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jade (2)
-
prehnite (1)
-
pyroxene group
-
clinopyroxene
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jadeite (9)
-
-
orthopyroxene (2)
-
-
wollastonite group
-
bustamite (3)
-
wollastonite (1)
-
-
xonotlite (2)
-
-
framework silicates
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feldspar group
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alkali feldspar
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anorthoclase (1)
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celsian (2)
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K-feldspar (13)
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microcline (2)
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orthoclase (1)
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sanidine (3)
-
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barium feldspar
-
celsian (2)
-
-
plagioclase
-
albite (2)
-
anorthite (2)
-
-
-
silica minerals
-
cristobalite (1)
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melanophlogite (1)
-
opal
-
opal-A (5)
-
opal-CT (5)
-
-
quartz (31)
-
-
sodalite group
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lazurite (1)
-
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zeolite group
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analcime (3)
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clinoptilolite (4)
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erionite (1)
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ferrierite (1)
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harmotome (1)
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heulandite (2)
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laumontite (2)
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mesolite (1)
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natrolite (2)
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phillipsite (5)
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scolecite (1)
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wairakite (2)
-
-
-
neptunite (1)
-
orthosilicates
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nesosilicates
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andalusite (2)
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braunite (1)
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dumortierite (2)
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garnet group
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andradite (2)
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grossular (1)
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hydrogarnet
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hibschite (1)
-
hydrogrossular (1)
-
-
uvarovite (1)
-
-
kyanite (1)
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merwinite (2)
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olivine group
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forsterite (1)
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monticellite (2)
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olivine (6)
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tephroite (1)
-
-
sillimanite (1)
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thaumasite (1)
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titanite group
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titanite (4)
-
-
topaz (1)
-
zircon group
-
thorite (2)
-
zircon (88)
-
-
-
sorosilicates
-
epidote group
-
allanite (3)
-
epidote (3)
-
piemontite (3)
-
-
lawsonite (5)
-
melilite group
-
gehlenite (1)
-
-
pumpellyite group
-
pumpellyite (1)
-
-
vesuvianite (5)
-
-
-
ring silicates
-
cordierite (1)
-
joaquinite (2)
-
scawtite (1)
-
tourmaline group (3)
-
-
sheet silicates
-
apophyllite (1)
-
chlorite group
-
chlorite (5)
-
clinochlore (1)
-
-
clay minerals
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allophane (1)
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beidellite (4)
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hectorite (1)
-
kaolinite (9)
-
montmorillonite (11)
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saponite (1)
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smectite (15)
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vermiculite (2)
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-
clintonite (1)
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corrensite (1)
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cymrite (1)
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gillespite (3)
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gyrolite (1)
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illite (13)
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mica group
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biotite (20)
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celadonite (1)
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glauconite (6)
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muscovite (3)
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paragonite (1)
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phengite (3)
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palygorskite (1)
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sepiolite (1)
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sericite (1)
-
serpentine group
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antigorite (1)
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berthierine (1)
-
chrysotile (7)
-
lizardite (1)
-
serpentine (9)
-
-
stilpnomelane (1)
-
talc (3)
-
-
-
sulfates
-
alunite (1)
-
anhydrite (3)
-
barite (4)
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bassanite (1)
-
chalcanthite (1)
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ettringite (2)
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glauberite (1)
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gypsum (2)
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jarosite (3)
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lazurite (1)
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melanterite (2)
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roemerite (1)
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rozenite (1)
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thaumasite (1)
-
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sulfides
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arsenopyrite (1)
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bismuthinite (1)
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bornite (1)
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chalcopyrite (1)
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cinnabar (3)
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greigite (1)
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heazlewoodite (1)
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iron sulfides (2)
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lazurite (1)
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marcasite (1)
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millerite (1)
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pentlandite (1)
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pyrite (6)
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pyrrhotite (1)
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-
-
sulfosalts
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sulfantimonites
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boulangerite (1)
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stephanite (1)
-
-
sulfarsenites
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geocronite (1)
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jordanite (1)
-
-
-
tellurates (1)
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tellurides (1)
-
tungstates
-
scheelite (1)
-
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uranium minerals (1)
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wehrlite (1)
-
-
Primary terms
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absolute age (151)
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academic institutions (3)
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Africa
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Central Africa
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Angola (1)
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Congo Basin (1)
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East Africa
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Antarctica
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Central Asia
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Far East
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Mineralogical Society of Poland
Mineralogical Society of America
What 25+ Years of “Did You Feel It” Intensities Tell Us About Shaking in California
Model for sinistral offset of the Cretaceous magmatic arc of southwestern North America along the Nacimiento fault system
Ground‐Motion Modeling Using MyShake Smartphone Peak Acceleration Data
Effects of probability model misspecification on the number of ground motions required for seismic performance assessment
Response spectrum and modal dynamic analyses of gravity dams using ground motion accelerations modified to account for hydrodynamic effects
How to b ‐Significant When Analyzing b ‐Value Variations
One Adventure after Another: Turning Challenges into Opportunities
ABSTRACT Born in Chicago, Illinois, I am a beneficiary of doors being opened during the 1960s. I was able to attend the University of Chicago Laboratory High School, and after high school, I attended Michigan Technological University. Thinking I’d like to become an architect, I enrolled in the civil engineering program. During orientation week, I discovered the geology department, and as my first class as a civil engineering major was Principles of Geology, it wasn’t long before the hook was set! However, I never really considered a career as a geologist after college because I assumed the draft and the Vietnam War would determine my ultimate fate. But I wasn’t drafted, and, ultimately, I took a job with Shell Oil Company in New Orleans as an “engineer,” though I had a geology degree. Realizing this was not the job I wanted or the place I wanted to be, I sought an adventure by going to the University of Alaska to get a master’s degree. This led to many more adventures and challenges as I learned to adapt to a new environment far different from my past experience. As I finished the master’s degree, I was invited to join the U.S. Geological Survey (USGS) and began a long career with the Alaska group of the USGS. It, too, has been one continuing adventure, working with and learning from some amazing people through the years. I only hope that others can find their way to their own adventures in the geosciences. There have been barriers thrown up along the way at times, sometimes reflecting that I’m African American. Yet, in all cases, I’ve found ways to adapt or overcome. My style has been to get along, but sometimes I’ve needed to push through barriers to accomplish my goal at the time.