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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
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Cuanza Basin (1)
-
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North Africa
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Egypt (1)
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Nubian Shield (1)
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Southern Africa
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South Africa
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Transvaal region (1)
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Arctic region
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Greenland
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Greenland ice sheet (1)
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Asia
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Far East
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China
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Indian Peninsula
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India
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Krasnoyarsk Russian Federation
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Lena Basin (1)
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Middle East
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Israel
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Siberia (1)
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Siberian Platform (1)
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Tibetan Plateau (1)
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Atlantic Ocean
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South Atlantic
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Australasia
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Quebec
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Western Canada
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Commonwealth of Independent States
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Russian Federation
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Lena Basin (1)
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Europe
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Mexico
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Arizona
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commodities
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mineral deposits, genesis (2)
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elements, isotopes
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carbon
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C-13/C-12 (4)
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isotope ratios (5)
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isotopes
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radioactive isotopes
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Be-10 (1)
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stable isotopes
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C-13/C-12 (4)
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O-18 (1)
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O-18/O-16 (5)
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metals
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manganese (1)
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oxygen
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phosphorus (1)
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fossils
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Invertebrata
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Porifera (1)
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Protista
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Foraminifera (3)
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microfossils (4)
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Plantae
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algae
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Microcodium (1)
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thallophytes (1)
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geochronology methods
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geologic age
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Cenozoic
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Quaternary
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middle Pleistocene (1)
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Tertiary
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lower Tertiary (1)
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Neogene
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Pliocene
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Paleogene
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Eocene
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upper Eocene (1)
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Oligocene (2)
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Paleocene
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lower Paleocene
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K-T boundary (3)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Aptian (1)
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Christopher Formation (1)
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Upper Cretaceous
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Kanguk Formation (1)
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K-T boundary (3)
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Marilia Formation (1)
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Triassic (1)
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Paleozoic
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Cambrian (1)
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Carboniferous
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Pennsylvanian
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Upper Pennsylvanian
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Holder Formation (1)
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-
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Ordovician
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Tetagouche Group (1)
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Permian (1)
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Precambrian
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Archean
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Blake River Group (1)
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Neoarchean (2)
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upper Precambrian
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Proterozoic
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Neoproterozoic
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Ediacaran (1)
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Torridonian (1)
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Waterberg System (1)
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igneous rocks
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igneous rocks
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carbonatites (1)
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phoscorites (1)
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picrite (1)
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plutonic rocks
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diorites (1)
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porphyry
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vitrophyre (1)
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volcanic rocks
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basalts (2)
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dacites (1)
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glasses
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obsidian (3)
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perlite (1)
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pyroclastics
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hyaloclastite (1)
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ignimbrite (1)
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tuff (2)
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rhyolites
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vitrophyre (1)
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metamorphic rocks
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impactites (1)
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mylonites
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schists
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meteorites
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meteorites
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stony meteorites
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chondrites
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ordinary chondrites
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LL chondrites (1)
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minerals
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arsenates
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carbonates
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ankerite (1)
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aragonite (4)
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calcite (7)
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hydromagnesite (1)
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vaterite (2)
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halides
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fluorides
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bastnaesite (1)
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minerals (3)
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native elements
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graphite (1)
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oxalates
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whewellite (1)
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oxides
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magnetite (3)
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tantalates
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microlite (1)
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phosphates
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wavellite (1)
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silicates
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chain silicates
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pyroxene group
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clinopyroxene
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jadeite (1)
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framework silicates
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feldspar group
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alkali feldspar (1)
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plagioclase (3)
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silica minerals
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chalcedony (2)
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quartz (2)
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zeolite group
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mordenite (2)
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orthosilicates
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nesosilicates
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olivine group
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olivine (1)
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zircon group
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zircon (1)
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sorosilicates
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epidote group
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epidote (1)
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-
sheet silicates
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clay minerals
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montmorillonite (1)
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-
-
-
sulfides
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pyrrhotite (1)
-
-
-
Primary terms
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absolute age (3)
-
Africa
-
Central Africa
-
Angola
-
Cuanza Basin (1)
-
-
-
North Africa
-
Egypt (1)
-
-
Nubian Shield (1)
-
Southern Africa
-
South Africa
-
Transvaal region (1)
-
-
-
-
Arctic region
-
Greenland
-
Greenland ice sheet (1)
-
-
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Asia
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Arabian Peninsula
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Arabian Shield (1)
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Kuwait (1)
-
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Far East
-
China
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Dabie Mountains (1)
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Longmenshan (1)
-
Tengger Desert (1)
-
-
-
Indian Peninsula
-
India
-
Bihar India (1)
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Jharkhand India
-
Singhbhum India (1)
-
-
-
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Taymyr Peninsula (1)
-
-
-
Lena Basin (1)
-
Middle East
-
Israel
-
Elath Israel (1)
-
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Turkey
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Anatolia (1)
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North Anatolian Fault (1)
-
-
-
Siberia (1)
-
Siberian Platform (1)
-
Tibetan Plateau (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Blake Plateau
-
Blake Nose (1)
-
-
-
South Atlantic
-
Santos Basin (1)
-
Southeast Atlantic (1)
-
-
-
Australasia
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Australia
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Tasmania Australia (1)
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New Zealand
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Kaipara Harbor (1)
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-
-
bacteria (1)
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bitumens (1)
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Canada
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Arctic Archipelago (1)
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Eastern Canada
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Maritime Provinces
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New Brunswick (1)
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Ontario
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Cochrane District Ontario
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Timmins Ontario (1)
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Quebec
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Saint Lawrence Estuary (1)
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Western Canada
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Alberta (1)
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British Columbia
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Prince Rupert British Columbia (1)
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Northwest Territories (1)
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-
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carbon
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C-13/C-12 (4)
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Caribbean region
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West Indies
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Antilles
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Greater Antilles
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Hispaniola
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Haiti (1)
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Puerto Rico (1)
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-
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Bahamas (1)
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-
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Cenozoic
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Quaternary
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Holocene (1)
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Pleistocene
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middle Pleistocene (1)
-
-
-
Tertiary
-
lower Tertiary (1)
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Neogene
-
Bone Valley Formation (1)
-
Pliocene
-
middle Pliocene (1)
-
-
-
Paleogene
-
Eocene
-
upper Eocene (1)
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Oligocene (2)
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Paleocene
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lower Paleocene
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K-T boundary (3)
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crystal chemistry (3)
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crystal growth (10)
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crystal structure (2)
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crystallography (2)
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deformation (3)
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earthquakes (1)
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electron microscopy (1)
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Europe
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Murmansk Russian Federation
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Kola Peninsula (1)
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Kovdor Massif (1)
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Western Europe
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Iceland
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Krafla (1)
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Scandinavia
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Norway
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Finnmark Norway (1)
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United Kingdom
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Great Britain
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England
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Pennines (1)
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Scotland
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Hebrides
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Inner Hebrides
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Rhum (1)
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Highland region Scotland
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Inverness-shire Scotland
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faults (4)
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folds (1)
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geochemistry (10)
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geomorphology (1)
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geophysical methods (1)
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carbonatites (1)
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phoscorites (1)
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picrite (1)
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plutonic rocks
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diorites (1)
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porphyry
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vitrophyre (1)
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volcanic rocks
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andesites (1)
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basalts (2)
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dacites (1)
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glasses
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obsidian (3)
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perlite (1)
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limburgite (1)
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pyroclastics
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hyaloclastite (1)
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ignimbrite (1)
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rhyolite tuff (1)
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tuff (2)
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rhyolites
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quartz porphyry (1)
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vitrophyre (1)
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inclusions
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fluid inclusions (1)
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intrusions (3)
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Invertebrata
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Arthropoda
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Crustacea (1)
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Porifera (1)
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Protista
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Foraminifera (3)
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-
-
isotopes
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radioactive isotopes
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Be-10 (1)
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stable isotopes
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C-13/C-12 (4)
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O-18 (1)
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O-18/O-16 (5)
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-
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lava (4)
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magmas (4)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Aptian (1)
-
Christopher Formation (1)
-
-
Upper Cretaceous
-
Kanguk Formation (1)
-
K-T boundary (3)
-
Marilia Formation (1)
-
-
-
Triassic (1)
-
-
metal ores
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gold ores (1)
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iron ores (1)
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lead ores (1)
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lead-zinc deposits (1)
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zinc ores (1)
-
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metals
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alkaline earth metals
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beryllium
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Be-10 (1)
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calcium (1)
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magnesium (2)
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strontium (1)
-
-
cobalt (1)
-
iron
-
ferric iron (1)
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ferrous iron (2)
-
-
manganese (1)
-
rare earths
-
neodymium (1)
-
-
-
metamorphic rocks
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cataclasites (2)
-
eclogite (1)
-
impactites (1)
-
metavolcanic rocks (1)
-
mylonites
-
pseudotachylite (3)
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schists
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greenschist (1)
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metamorphism (2)
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metasomatism (2)
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meteorites
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stony meteorites
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chondrites
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ordinary chondrites
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H chondrites (1)
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LL chondrites (1)
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-
-
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Mexico
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Nuevo Leon Mexico (1)
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-
mineral deposits, genesis (2)
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mineral exploration (1)
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mineralogy (6)
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minerals (3)
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North America
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Canadian Shield
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Superior Province
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Abitibi Belt (2)
-
-
-
-
Ocean Drilling Program
-
Leg 171B
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ODP Site 1049 (1)
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oxygen
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O-18 (1)
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O-18/O-16 (5)
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paleoecology (1)
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Paleozoic
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Cambrian (1)
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Carboniferous
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Pennsylvanian
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Upper Pennsylvanian
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Holder Formation (1)
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-
-
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Ordovician
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Tetagouche Group (1)
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Permian (1)
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paragenesis (2)
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petroleum (2)
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petrology (5)
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phase equilibria (3)
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phosphorus (1)
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Plantae
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algae
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Microcodium (1)
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nannofossils (1)
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plate tectonics (1)
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Precambrian
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Archean
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Blake River Group (1)
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Neoarchean (2)
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upper Precambrian
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Proterozoic
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Neoproterozoic
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Ediacaran (1)
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Torridonian (1)
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Waterberg System (1)
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remote sensing (1)
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sea water (3)
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sea-level changes (1)
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sedimentary petrology (5)
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chemically precipitated rocks
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biogenic structures
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sedimentation (7)
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sediments
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marine sediments (1)
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soils (1)
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South America
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Brazil
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Bauru Basin (1)
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structural analysis (1)
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tectonics (1)
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tektites (2)
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thallophytes (1)
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United States
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Arizona
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Pima County Arizona (1)
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Colorado
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Custer County Colorado (1)
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spherulites
Ferric vs. ferrous arsenate amorphous precursors: Properties and controls on scorodite mineralization
Assessing the role of dolomite in oil trapping in in situ Brazilian pre-salt carbonate reservoirs by pore-scale modelling and simulation
Pyrrhotite and Fe-P alloy formed in pseudotachylyte and their implications for seismic environments: Evidence from rock-heating experiments
Vaterite Optical Petrography in Lake Sturgeon Otoliths
ABSTRACT Australasian tektites represent the largest group of tektites on Earth, and their strewn field covers up to one sixth of Earth’s surface. After several decades of fruitless quest for a parent crater for Australasian tektites, mostly in the main part of the strewn field in Indochina, the crater remains undiscovered. We elaborate upon a recently suggested original hypothesis for the impact in the Alashan Desert in Northwest China. Evidence from geochemical and isotopic compositions of potential source materials, gravity data, and geographic, paleoenvironmental, and ballistic considerations support a possible impact site in the Badain Jaran part of the Alashan Desert. In further support of an impact location in China, glassy microspherules recovered from Chinese loess may be the right age to relate to the Australasian tektite event, perhaps as part of the impacting body. The most serious shortcomings of the commonly accepted Indochina impact location include signs of little chemical weathering of source materials of Australasian tektites, unlike highly weathered sedimentary targets in Indochina, and questionable assumptions about transport of distal ejecta.