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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Lebombo Mountains (1)
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Southern Africa
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Karoo Basin (5)
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South Africa
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Eastern Cape Province South Africa (3)
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Free State South Africa (1)
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KwaZulu-Natal South Africa (2)
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Western Cape Province South Africa (1)
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Swaziland (1)
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Antarctica
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Transantarctic Mountains
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Beardmore Glacier (1)
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Horlick Mountains (1)
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Victoria Land (3)
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Asia
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Arabian Peninsula
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Saudi Arabia (1)
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Indian Peninsula
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India
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Damodar Valley (1)
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Sri Lanka (1)
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Atlantic Ocean Islands
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Falkland Islands (1)
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Australasia
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Australia
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Western Australia (1)
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Indian Ocean (1)
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polar regions (1)
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Shackleton Glacier (1)
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South America
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Falkland Islands (1)
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commodities
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petroleum (1)
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elements, isotopes
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carbon
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C-13/C-12 (3)
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isotope ratios (3)
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isotopes
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stable isotopes
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C-13/C-12 (3)
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fossils
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burrows (1)
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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Synapsida
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Therapsida
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Dicynodontia
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Lystrosaurus (2)
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ichnofossils (3)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Branchiopoda (1)
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Insecta
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Pterygota
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Neoptera
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Exopterygota
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Perlaria (1)
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microfossils (5)
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palynomorphs
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miospores
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pollen (1)
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Plantae
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Pteridophyta
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Lycopsida
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Lepidodendron (1)
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Stigmaria (1)
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Sphenopsida
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Equisetales
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Calamites (1)
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Sphenophyllum (1)
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Spermatophyta
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Angiospermae (1)
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Gymnospermae
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Coniferales (1)
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Cordaitales (1)
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Cycadales
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Ptilophyllum (1)
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Ginkgoales (1)
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Glossopteridales
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Gangamopteris (2)
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Glossopteris
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Glossopteris flora (7)
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Pteridospermae (2)
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geologic age
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Cenozoic (1)
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Mesozoic
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Triassic
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Lower Triassic
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Permian-Triassic boundary (5)
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Paleozoic
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Permian
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Ecca Group (1)
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Guadalupian
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Wordian (1)
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Illawarra Coal Measures (1)
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Khuff Formation (1)
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Middle Permian (1)
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Newcastle Coal Measures (1)
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Upper Permian
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Kazanian (1)
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Permian-Triassic boundary (5)
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upper Paleozoic
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Dwyka Formation (1)
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metamorphic rocks
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turbidite (1)
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minerals
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sulfides
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pyrite (1)
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Primary terms
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Africa
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Lebombo Mountains (1)
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Southern Africa
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Karoo Basin (5)
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South Africa
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Eastern Cape Province South Africa (3)
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Free State South Africa (1)
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KwaZulu-Natal South Africa (2)
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Western Cape Province South Africa (1)
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Swaziland (1)
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-
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Antarctica
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Transantarctic Mountains
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Beardmore Glacier (1)
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Horlick Mountains (1)
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Victoria Land (3)
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Asia
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Arabian Peninsula
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Saudi Arabia (1)
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Indian Peninsula
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India
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Damodar Valley (1)
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-
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Sri Lanka (1)
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Atlantic Ocean Islands
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Falkland Islands (1)
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Australasia
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Australia
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Western Australia (1)
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biogeography (2)
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carbon
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C-13/C-12 (3)
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Cenozoic (1)
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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Synapsida
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Therapsida
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Dicynodontia
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Lystrosaurus (2)
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climate change (3)
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continental drift (1)
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data processing (1)
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geochemistry (1)
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glacial geology (1)
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ichnofossils (3)
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Indian Ocean (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Branchiopoda (1)
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Insecta
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Pterygota
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Neoptera
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Exopterygota
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Perlaria (1)
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isotopes
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stable isotopes
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C-13/C-12 (3)
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Mesozoic
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Triassic
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Lower Triassic
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Permian-Triassic boundary (5)
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paleobotany (1)
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paleoclimatology (8)
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paleoecology (6)
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paleogeography (5)
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paleontology (1)
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Paleozoic
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Permian
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Ecca Group (1)
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Guadalupian
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Wordian (1)
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Illawarra Coal Measures (1)
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Khuff Formation (1)
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Middle Permian (1)
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Newcastle Coal Measures (1)
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Upper Permian
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Kazanian (1)
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Permian-Triassic boundary (5)
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-
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upper Paleozoic
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Dwyka Formation (1)
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-
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palynomorphs
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miospores
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pollen (1)
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-
-
petroleum (1)
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Plantae
-
Pteridophyta
-
Lycopsida
-
Lepidodendron (1)
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Stigmaria (1)
-
-
Sphenopsida
-
Equisetales
-
Calamites (1)
-
-
Sphenophyllum (1)
-
-
-
Spermatophyta
-
Angiospermae (1)
-
Gymnospermae
-
Coniferales (1)
-
Cordaitales (1)
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Cycadales
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Ptilophyllum (1)
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Ginkgoales (1)
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Glossopteridales
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Gangamopteris (2)
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Glossopteris
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Glossopteris flora (7)
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-
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Pteridospermae (2)
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plate tectonics (2)
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sedimentary rocks
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clastic rocks
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claystone (1)
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diamictite (1)
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mudstone (1)
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sandstone (2)
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coal (2)
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sedimentation (4)
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sediments
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clastic sediments
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sand (1)
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South America
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Falkland Islands (1)
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weathering (1)
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rock formations
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Beaufort Group (4)
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Karoo Supergroup (3)
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sedimentary rocks
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sedimentary rocks
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clastic rocks
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claystone (1)
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diamictite (1)
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mudstone (1)
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sandstone (2)
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coal (2)
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turbidite (1)
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sedimentary structures
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burrows (1)
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sediments
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sediments
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clastic sediments
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sand (1)
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turbidite (1)
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Glossopteridales
PALEONTOLOGY OF THE BLAAUWATER 67 AND 65 FARMS, SOUTH AFRICA: TESTING THE DAPTOCEPHALUS/LYSTROSAURUS BIOZONE BOUNDARY IN A STRATIGRAPHIC FRAMEWORK
The first record of the Permian Glossopteris flora from Sri Lanka: implications for hydrocarbon source rocks in the Mannar Basin
LITHOSTRATIGRAPHY OF THE EMAKWEZINI FORMATION (KAROO SUPERGROUP), SOUTH AFRICA
Leaf habit of Late Permian Glossopteris trees from high-palaeolatitude forests
ANTARCTICA: ENHANCING THE LINKS ACROSS TIME AND SPACE OF THE PERMIAN GLOSSOPTERIDS
TAPHONOMIC ASPECTS OF THE WAGONDRIFT QUARRY SITE, AND THEIR IMPLICATIONS FOR THE DEPOSITIONAL ENVIRONMENT OF THE UPPER PERMIAN ESTCOURT FORMATION (KWAZULU-NATAL, SOUTH AFRICA)
UNDERSTANDING THE BIOLOGY OF HIGH-LATITUDE TREES IN A GREENHOUSE WORLD
A note on the biostratigraphic application of Permian plant fossils of the Normandien Formation (Beaufort Group, Northeastern Main Karoo Basin), South Africa
First-cycle sandstone composition and color of associated fine-grained rocks as an aid to resolve Gondwana stratigraphy in peninsular India
A stratigraphic problem in most Gondwana basins in peninsular India has persisted for more than a century. Originally, in the type area of Damodar valley, the stratigraphy was established based on the order of superposition without the aid of fossils. However, fossils were used to classify the Gondwana succession into Lower Gondwana (Early Permian to Late Triassic), characterized by Glossopteris flora (considered to have become extinct by the end of Triassic), and Upper Gondwana, which has Ptilophyllum flora (Jurassic). The problem started as the work extended further outside the type area, where Glossopteris flora was discovered in Upper Gondwana rocks of Early Jurassic age. At this point, fossils took precedence in determining the relative age of strata under the assumption that Glossopteris flora could not extend beyond the Triassic. Therefore, Glossopteris -bearing Upper Gondwana–looking rocks were assumed to be of pre-Jurassic age. Thus, Upper Gondwana rocks were relegated to Lower Gondwana status. The confidence on fossils to determine the relative age of strata was so strong that the necessity to confirm their relative age based on the law of superposition was thought unnecessary. This happened in spite of the fact that ages based on a fossil are conceptual entities, whereas establishing the order of superposition is the ultimate proof of relative age of strata. Gondwana sedimentation coincided with the global climatic change from an ice-house state in the late Paleozoic to a greenhouse state in the Mesozoic. Climate played the most important role in controlling sandstone composition and other lithological attributes. A strong correlation between sand/sandstone composition and climate is well established. Any perceptible change in climate brings a perceptible change in sand/sandstone composition. Such compositional transition would be expected in the stratigraphic column as the climate changed between the two extremes. Sandstone composition of the Gondwana succession in the Raniganj basin, India, supports such a hypothesis. In addition, color of fine-grained rocks in the Gondwana succession, which to some extent is also influenced by climate, uniquely identifies each lithostratigraphic unit. Stratigraphy must be based on the law of superposition. But sandstone composition along with the color of fine-grained rocks could serve as additional criteria to stratigraphic interpretation. Such an approach may be useful in structurally overturned sequences and in reconstructing the subsurface stratigraphy from borehole cores.