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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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Afar (51)
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East Africa
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Afar Depression (4)
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Djibouti (18)
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Eritrea (1)
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Ethiopia
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Awash Valley (1)
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-
Ethiopian Rift (3)
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Kenya
-
East Turkana Basin (1)
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Turkana Basin (1)
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East African Rift (5)
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North Africa
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Egypt
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Eastern Desert (1)
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-
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Southern Africa
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Botswana
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Okavango Delta (1)
-
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Kalahari Craton (1)
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-
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Arctic Ocean
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Norwegian Sea
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Jan Mayen Ridge (1)
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-
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Asal Rift (4)
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Asia
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Arabian Peninsula
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Arabian Shield (1)
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Indian Peninsula
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India (1)
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Middle East
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Israel (1)
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Jordan (1)
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Siberia (1)
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Atlantic Ocean
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North Atlantic (2)
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South Atlantic (1)
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Commonwealth of Independent States
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Russian Federation (1)
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Europe
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Western Europe
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Iceland (4)
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-
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Indian Ocean
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Arabian Sea
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Gulf of Aden (4)
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Red Sea
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Red Sea Rift (3)
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-
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Indian Ocean Islands
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Seychelles (1)
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Pacific Ocean
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West Pacific
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Ontong Java Plateau (2)
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-
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Red Sea region (2)
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Sinai (1)
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United States
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California
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Southern California (1)
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Idaho (1)
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Montana (1)
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Wyoming (1)
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-
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commodities
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mineral deposits, genesis (3)
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potash (3)
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elements, isotopes
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metals
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rare earths (1)
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-
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fossils
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Chordata
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Vertebrata
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Tetrapoda
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Mammalia
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Theria
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Eutheria
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Artiodactyla
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Hippopotamidae (1)
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microfossils (1)
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Plantae
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algae
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diatoms (1)
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thallophytes (1)
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geochronology methods
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Ar/Ar (2)
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K/Ar (1)
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paleomagnetism (1)
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Re/Os (1)
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Sm/Nd (1)
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tephrochronology (1)
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U/Pb (1)
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geologic age
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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Pleistocene (4)
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Tertiary
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Neogene
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Miocene
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Columbia River Basalt Group (1)
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Pliocene
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Hadar Formation (2)
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lower Pliocene (1)
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Paleogene
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Oligocene (1)
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Mesozoic
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Cretaceous
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Middle Cretaceous (1)
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Upper Cretaceous (1)
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igneous rocks
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igneous rocks
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volcanic rocks
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basalts
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flood basalts (1)
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glasses (2)
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pyroclastics
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tuff (1)
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rhyolites
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pantellerite (1)
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trachytes (1)
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-
-
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minerals
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silicates (1)
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Primary terms
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absolute age (4)
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Africa
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Afar (51)
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East Africa
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Afar Depression (4)
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Djibouti (18)
-
Eritrea (1)
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Ethiopia
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Awash Valley (1)
-
-
Ethiopian Rift (3)
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Kenya
-
East Turkana Basin (1)
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Turkana Basin (1)
-
-
East African Rift (5)
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North Africa
-
Egypt
-
Eastern Desert (1)
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-
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Southern Africa
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Botswana
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Okavango Delta (1)
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Kalahari Craton (1)
-
-
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Arctic Ocean
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Norwegian Sea
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Jan Mayen Ridge (1)
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-
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Asia
-
Arabian Peninsula
-
Arabian Shield (1)
-
-
Indian Peninsula
-
India (1)
-
-
Middle East
-
Israel (1)
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Jordan (1)
-
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Siberia (1)
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Atlantic Ocean
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North Atlantic (2)
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South Atlantic (1)
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atmosphere (1)
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biogeography (1)
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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Pleistocene (4)
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Tertiary
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Neogene
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Miocene
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Columbia River Basalt Group (1)
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Pliocene
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Hadar Formation (2)
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lower Pliocene (1)
-
-
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Paleogene
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Oligocene (1)
-
-
-
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Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia
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Theria
-
Eutheria
-
Artiodactyla
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Hippopotamidae (1)
-
-
-
-
-
-
-
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crust (9)
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data processing (1)
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deformation (3)
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earthquakes (6)
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economic geology (3)
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Europe
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Western Europe
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Iceland (4)
-
-
-
faults (12)
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fractures (2)
-
geochemistry (5)
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geochronology (1)
-
geodesy (2)
-
geomorphology (1)
-
geophysical methods (5)
-
heat flow (2)
-
igneous rocks
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volcanic rocks
-
basalts
-
flood basalts (1)
-
-
glasses (2)
-
pyroclastics
-
tuff (1)
-
-
rhyolites
-
pantellerite (1)
-
-
trachytes (1)
-
-
-
inclusions (1)
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Indian Ocean
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Arabian Sea
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Gulf of Aden (4)
-
-
Red Sea
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Red Sea Rift (3)
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-
-
Indian Ocean Islands
-
Seychelles (1)
-
-
intrusions (3)
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isostasy (1)
-
lava (1)
-
magmas (11)
-
mantle (11)
-
Mesozoic
-
Cretaceous
-
Middle Cretaceous (1)
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Upper Cretaceous (1)
-
-
-
metals
-
rare earths (1)
-
-
mineral deposits, genesis (3)
-
Mohorovicic discontinuity (1)
-
ocean floors (1)
-
Pacific Ocean
-
West Pacific
-
Ontong Java Plateau (2)
-
-
-
paleoclimatology (2)
-
paleogeography (2)
-
paleomagnetism (1)
-
petrology (6)
-
Plantae
-
algae
-
diatoms (1)
-
-
-
plate tectonics (25)
-
potash (3)
-
Red Sea region (2)
-
remote sensing (4)
-
sea-floor spreading (7)
-
sedimentary rocks
-
chemically precipitated rocks
-
evaporites (3)
-
-
clastic rocks (1)
-
-
sedimentation (1)
-
sediments
-
clastic sediments
-
overbank sediments (1)
-
-
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seismology (1)
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stratigraphy (3)
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structural geology (4)
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symposia (1)
-
tectonics (13)
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tectonophysics (9)
-
thallophytes (1)
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United States
-
California
-
Southern California (1)
-
-
Idaho (1)
-
Montana (1)
-
Wyoming (1)
-
-
volcanology (3)
-
-
rock formations
-
Emeishan Basalts (1)
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Siberian Traps (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
chemically precipitated rocks
-
evaporites (3)
-
-
clastic rocks (1)
-
-
volcaniclastics (1)
-
-
sediments
-
sediments
-
clastic sediments
-
overbank sediments (1)
-
-
-
volcaniclastics (1)
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Afar
Throw distribution across the Dabbahu–Manda Hararo dike-induced fault array: Implications for rifting and faulting Available to Purchase
Central Afar: An analogue for oceanic plateau development Open Access
Anelastic Tomography of the Arabian Plate Available to Purchase
Training the creation, visualization and interpretation of fault maps for the subsurface – using tectonic geomorphology Open Access
Abstract Fault mapping is essential for understanding subsurface geological structure. However, effective training of students in developing and understanding fault patterns in 3D seismic imagery is impeded by the time-investment needed to acquire competence using software and then creating depth-structure maps of stratal horizons. Here an exercise is laid out that can achieve the desired experience – using the young fault systems of Afar (Djibouti), where former land-surface-defining basalt flows are offset by arrays of normal faults. The top-basalt surface, displayed on GoogleEarth, is in effect a depth-structure map and the gaps (‘fault-loss’) in this surface approximate to exposed fault surfaces. The mapping exercise is described and illustrated here step-wise. The fault system is gradually mapped out to reveal examples of long-continuous faults, branching patterns, relaying faults and isolated fault segments. Alternative criteria for identifying faults can be examined, with analogies in seismic interpretation. This can inform discussion of the approaches and uncertainties inherent in mapping faults in the subsurface. The study may be extended to consider the pattern of early–syn-rift depositional systems. Collectively these tasks can be progressed within an hour or so, providing effective insights into the structure of normal fault systems that cannot be replicated by conventional fieldwork.
Strong seismic anisotropy due to upwelling flow at the root of the Yellowstone mantle plume Available to Purchase
Time-space variations in the East African Rift magmatism: the role of different mantle domains Available to Purchase
Oceanic isostasy as a trigger for the rift-to-drift transition Available to Purchase
SO 2 Gas Reactions with Silicate Glasses Available to Purchase
The thermal structure of volcanic passive margins Available to Purchase
Local Earthquake Magnitude Scale and b ‐Value for the Danakil Region of Northern Afar Available to Purchase
Flip-flop detachment tectonics at nascent passive margins in SE Afar Open Access
Inferring Fluvial Morphodynamics and Overbank Flow Control From 3D Outcrop Sections of A Pleistocene Point Bar, Dandiero Basin, Eritrea Available to Purchase
Plume–plate interaction Available to Purchase
Mantle upwelling and initiation of rift segmentation beneath the Afar Depression Open Access
THE OKAVANGO DELTA AND ITS PLACE IN THE GEOMORPHOLOGICAL EVOLUTION OF SOUTHERN AFRICA Available to Purchase
Oligocene regional denudation of the northern Afar dome: Pre- and syn-breakup stages of the Afro-Arabian plate Available to Purchase
Q from 1‐Hz Lg Wave and Its Coda in the Northern Main Ethiopian Rift and Afar Available to Purchase
Holocene opening directions along the axes of the Red Sea (Afar) and Main Ethiopian Rifts: An overview Available to Purchase
Assessments of the extension directions and their variations are critical for understanding rifting processes. This study provides an overview of the extension directions along the axes of the Main Ethiopian Rift and the Red Sea Rift (or propagator) of Afar, two of the three rifts meeting at the Afar triple junction. This overview is based on new and published field data on the opening direction of significant (width >0.2 m) Holocene extension fractures along the rift axis. The data show that the Red Sea propagator axis opens orthogonally, both in northern and central Afar, even though a significant strike-slip component is recognized at the rift margins in central Afar. The Main Ethiopian Rift axis also opens orthogonal to the trend of the rift, which varies between the different rift segments. Therefore, the axes of two of the three rifts meeting in Afar are characterized by orthogonal extension. However, given the variable orientations of the rift segments, the obtained opening directions are usually not uniform along the rift. Current plate-motion models suggest slightly different divergence directions, especially along the Main Ethiopian Rift, which shows a significant oblique component. The discrepancy between the data along the rift axis and those from plate-motion models suggests an across-rift strain partitioning. The observed orthogonal extension along the rift axis may be magma-induced, provided that a depth-dependent variation in the kinematics exists, at least below the Main Ethiopian Rift axis.