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Format
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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 (3)
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Gabon (1)
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Congo Craton (1)
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Kalahari Desert (1)
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North Africa
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Algeria
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Ahaggar (1)
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Egypt
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Sinai Egypt (1)
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Southern Africa
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Namibia (2)
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South Africa
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Cape fold belt (1)
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Transvaal region (1)
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Witwatersrand (1)
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West Africa (1)
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Antarctica
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Ellsworth Land
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Ellsworth Mountains (1)
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Transantarctic Mountains
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Pensacola Mountains (1)
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Asia
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Far East
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Himalayas (1)
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Indian Peninsula
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India
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Krasnoyarsk Russian Federation
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Taymyr Dolgan-Nenets Russian Federation
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Norilsk region (1)
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Atlantic Ocean
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South Atlantic
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West Atlantic (1)
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Atlantic Ocean Islands
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Sigma Mine (1)
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Commonwealth of Independent States
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Taymyr Dolgan-Nenets Russian Federation
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Europe
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Sao Francisco Craton (37)
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Sao Paulo Brazil (5)
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United States
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Pb-206/Pb-204 (1)
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stable isotopes
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C-13/C-12 (5)
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Cr-53/Cr-52 (1)
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Nd-144/Nd-143 (3)
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O-18/O-16 (5)
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Pb-206/Pb-204 (1)
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oxygen
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O-18/O-16 (5)
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fossils
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Vertebrata
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Pisces (2)
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Mammalia
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Theria
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Edentata
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Reptilia (1)
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Cloudina (1)
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Invertebrata
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Arthropoda
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Crustacea
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Ostracoda
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Podocopida
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Cypridocopina (1)
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Insecta
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Pterygota
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Neoptera
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Endopterygota
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Hymenoptera (4)
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Protista
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Foraminifera
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Rotaliina
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Orbitoidacea
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Amphistegina (1)
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microfossils (7)
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palynomorphs
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miospores
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pollen (7)
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Plantae
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algae
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calcareous algae (1)
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Chlorophyta
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Chlorophyceae
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Codiaceae
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Halimeda (1)
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Spermatophyta
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Angiospermae
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Dicotyledoneae
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Asteridae (1)
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problematic fossils (1)
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thallophytes (2)
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trails (1)
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geochronology methods
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(U-Th)/He (1)
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Lu/Hf (1)
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paleomagnetism (2)
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Pb/Pb (1)
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U/Pb (4)
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geologic age
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Cenozoic
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Quaternary
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Holocene (6)
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Pleistocene
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upper Pleistocene (3)
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Tertiary
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Neogene (1)
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Paleogene
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Paleocene (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (1)
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Aptian (4)
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Barremian (1)
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Bear River Formation (1)
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Candeias Formation (1)
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Neocomian (2)
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Upper Cretaceous
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Campanian (1)
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Senonian (1)
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-
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Jurassic
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Middle Jurassic (1)
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Upper Jurassic (2)
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Triassic
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Upper Triassic (1)
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Paleozoic
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Cambrian (3)
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Carboniferous (1)
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Itarare Subgroup (1)
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lower Paleozoic (1)
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Ordovician (1)
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Permian (2)
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Silurian (1)
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Phanerozoic (1)
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Precambrian
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Archean
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Paleoarchean (1)
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Minas Supergroup (4)
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upper Precambrian
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Proterozoic
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Bambui Group (5)
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Espinhaco Supergroup (4)
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Mesoproterozoic (3)
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Neoproterozoic
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Cryogenian (1)
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Ediacaran (5)
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Macaubas Group (2)
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Vendian (1)
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Paleoproterozoic (7)
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-
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igneous rocks
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igneous rocks
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carbonatites (1)
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feldspathoid rocks (1)
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kimberlite (1)
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plutonic rocks
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diabase (1)
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diorites (1)
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gabbros
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norite (2)
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granites
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leucogranite (1)
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granodiorites (2)
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lamproite (1)
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lamprophyres (1)
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pegmatite (6)
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syenites
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albitite (1)
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nepheline syenite (1)
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ultramafics
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peridotites
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dunite (2)
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harzburgite (3)
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pyroxenite
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orthopyroxenite (3)
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volcanic rocks
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basalts
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mid-ocean ridge basalts (1)
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ocean-island basalts (1)
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tholeiitic basalt (1)
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metamorphic rocks
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metamorphic rocks
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amphibolites (1)
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gneisses
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granite gneiss (1)
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tonalite gneiss (1)
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itabirite (1)
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metaigneous rocks
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metabasalt (1)
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metadiorite (1)
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metagranite (1)
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metarhyolite (1)
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metasedimentary rocks (2)
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metavolcanic rocks (1)
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quartzites (2)
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greenstone (1)
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slates (2)
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turbidite (1)
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minerals
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carbonates
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halides
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fluorides
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topaz (1)
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hydrates (1)
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minerals (3)
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native elements
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carbonado (2)
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oxides
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chromite (2)
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rutile (6)
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phosphates
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ring silicates
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tourmaline group
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sheet silicates
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chlorite group
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clay minerals
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illite (1)
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mica group
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biotite (1)
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muscovite (3)
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phlogopite (1)
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pyrophyllite (1)
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sulfates (2)
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sulfides
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arsenopyrite (1)
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bornite (1)
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pyrite (3)
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pyrrhotite (1)
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tellurates (1)
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tellurides (1)
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uranium minerals (1)
-
-
Primary terms
-
absolute age (12)
-
Africa
-
Central Africa
-
Angola (1)
-
Congo (3)
-
Gabon (1)
-
-
Congo Craton (1)
-
Kalahari Desert (1)
-
North Africa
-
Algeria
-
Ahaggar (1)
-
-
Egypt
-
Sinai Egypt (1)
-
-
-
Southern Africa
-
Namibia (2)
-
South Africa
-
Cape fold belt (1)
-
Transvaal region (1)
-
Witwatersrand (1)
-
-
-
West Africa (1)
-
-
Antarctica
-
Ellsworth Land
-
Ellsworth Mountains (1)
-
-
Transantarctic Mountains
-
Pensacola Mountains (1)
-
-
-
Asia
-
Far East
-
China (1)
-
-
Himalayas (1)
-
Indian Peninsula
-
India
-
Andhra Pradesh India (1)
-
-
-
Krasnoyarsk Russian Federation
-
Taymyr Dolgan-Nenets Russian Federation
-
Norilsk region (1)
-
-
-
-
Atlantic Ocean
-
Mid-Atlantic Ridge (1)
-
South Atlantic
-
Southwest Atlantic (4)
-
-
West Atlantic (1)
-
-
Atlantic Ocean Islands
-
Falkland Islands (1)
-
-
atmosphere (1)
-
Australasia
-
Australia
-
Tasmania Australia (1)
-
-
-
biogeography (1)
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biography (2)
-
Canada
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Eastern Canada
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Ontario (1)
-
Quebec
-
Abitibi County Quebec
-
Val d'Or Quebec (1)
-
-
Sigma Mine (1)
-
-
-
-
carbon
-
C-13/C-12 (5)
-
C-14 (3)
-
-
Cenozoic
-
Quaternary
-
Holocene (6)
-
Pleistocene
-
upper Pleistocene (3)
-
-
-
Tertiary
-
Neogene (1)
-
Paleogene
-
Eocene (2)
-
Paleocene (1)
-
-
-
-
Chordata
-
Vertebrata
-
Pisces (2)
-
Tetrapoda
-
Mammalia
-
Theria
-
Eutheria
-
Edentata
-
Xenarthra (1)
-
-
Litopterna (1)
-
-
-
-
Reptilia (1)
-
-
-
-
clay mineralogy (2)
-
climate change (2)
-
continental drift (5)
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continental shelf (2)
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continental slope (1)
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crust (7)
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crystal chemistry (6)
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crystal growth (6)
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crystal structure (12)
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crystallography (2)
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data processing (5)
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deformation (7)
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diagenesis (3)
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diamond deposits (4)
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earthquakes (1)
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ecology (2)
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economic geology (9)
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electron microscopy (1)
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Europe
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Central Europe
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Black Forest (1)
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Germany
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Baden-Wurttemberg Germany (1)
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Eifel (1)
-
Rhineland-Palatinate Germany (1)
-
-
-
Rhenish Schiefergebirge
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Eifel (1)
-
-
Southern Europe
-
Italy
-
Veneto Italy
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Vicenza Italy (1)
-
-
-
-
-
faults (12)
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folds (4)
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foliation (2)
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fractures (3)
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gems (2)
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geochemistry (11)
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geochronology (2)
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geomorphology (1)
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geophysical methods (13)
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geosynclines (1)
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glacial geology (1)
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ground water (1)
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heat flow (1)
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ichnofossils (1)
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igneous rocks
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carbonatites (1)
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feldspathoid rocks (1)
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kimberlite (1)
-
plutonic rocks
-
diabase (1)
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diorites (1)
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gabbros
-
norite (2)
-
-
granites
-
leucogranite (1)
-
-
granodiorites (2)
-
lamproite (1)
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lamprophyres (1)
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pegmatite (6)
-
syenites
-
albitite (1)
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nepheline syenite (1)
-
-
ultramafics
-
peridotites
-
dunite (2)
-
harzburgite (3)
-
-
pyroxenite
-
orthopyroxenite (3)
-
-
-
-
volcanic rocks
-
basalts
-
mid-ocean ridge basalts (1)
-
ocean-island basalts (1)
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tholeiitic basalt (1)
-
-
-
-
inclusions
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fluid inclusions (5)
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industrial minerals (1)
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intrusions (14)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda
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Podocopida
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Cypridocopina (1)
-
-
-
-
Insecta
-
Pterygota
-
Neoptera
-
Endopterygota
-
Hymenoptera (4)
-
-
-
-
-
-
-
Protista
-
Foraminifera
-
Rotaliina
-
Orbitoidacea
-
Amphistegina (1)
-
-
-
-
-
-
isostasy (1)
-
isotopes
-
radioactive isotopes
-
C-14 (3)
-
Pb-206/Pb-204 (1)
-
-
stable isotopes
-
C-13/C-12 (5)
-
Cr-53/Cr-52 (1)
-
Nd-144/Nd-143 (3)
-
O-18/O-16 (5)
-
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Mud diapirs in a continental extensional basin: 3D seismic interpretation of the Central Recôncavo Basin (northeast Brazil) Available to Purchase
Insights into the Phanerozoic evolution of the São Francisco Craton based on detrital zircon thermochronology and U-Pb-Hf geochronology Available to Purchase
Organic-walled microfossils from the Ediacaran Sete Lagoas Formation, Bambuí Group, Southeast Brazil: taxonomic and biostratigraphic analyses Open Access
The amalgamation of Gondwana: calcite twinning and finite strains from the early–late Paleozoic Buzios, Ross, Kurgiakh and Gondwanide orogens Available to Purchase
Abstract Orientated carbonate (calcite twinning strains; n = 78 with 2414 twin measurements) and quartzites (finite strains; n = 15) were collected around Gondwana to study the deformational history associated with the amalgamation of the supercontinent. The Buzios orogen (545–500 Ma), within interior Gondwana, records the high-grade collisional orogen between the São Francisco Craton (Brazil) and the Congo–Angola Craton (Angola and Namibia), and twinning strains in calc-silicates record a SE–NW shortening fabric parallel to the thrust transport. Along Gondwana's southern margin, the Saldanian–Ross–Delamerian orogen (590–480 Ma) is marked by a regional unconformity that cuts into deformed Neoproterozoic–Ordovician sedimentary rocks and associated intrusions. Cambrian carbonate is preserved in the central part of the southern Gondwana margin, namely in the Kango Inlier of the Cape Fold Belt and the Ellsworth, Pensacola and Transantarctic mountains. Paleozoic carbonate is not preserved in the Ventana Mountains in Argentina, in the Falkland Islands/Islas Malvinas or in Tasmania. Twinning strains in these Cambrian carbonate strata and synorogenic veins record a complex, overprinted deformation history with no stable foreland strain reference. The Kurgiakh orogen (490 Ma) along Gondwana's northern margin is also defined by a regional Ordovician unconformity throughout the Himalaya; these rocks record a mix of layer-parallel and layer-normal twinning strains with a likely Himalayan (40 Ma) strain overprint and no autochthonous foreland strain site. Conversely, the Gondwanide orogen (250 Ma) along Gondwana's southern margin has three foreland (autochthonous) sites for comparison with 59 allochthonous thrust-belt strain analyses. From west to east, these include: finite strains from Devonian quartzite preserve a layer-parallel shortening (LPS) strain rotated clockwise in the Ventana Mountains of Argentina; frontal (calcite twins) and internal (quartzite strains) samples in the Cape Fold Belt preserve a LPS fabric that is rotated clockwise from the autochthonous north–south horizontal shortening in the foreland strain site; Falkland Devonian quartzite shows the same clockwise rotation of the LPS fabric; and Permian limestone and veins in Tasmania record a thrust transport-parallel LPS fabric. Early amalgamation of Gondwana (Ordovician) is preserved by local layer-parallel and layer-normal strain without evidence of far-field deformation, whereas the Gondwanide orogen (Permian) is dominated by layer-parallel shortening, locally rotated by dextral shear along the margin, that propagated across the supercontinent.