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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
-
East Africa
-
Afar Depression (1)
-
Ethiopia (2)
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Ethiopian Rift (3)
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Kenya (10)
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Lake Turkana (2)
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Tanzania (4)
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Turkana Basin (2)
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East African Lakes
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Lake Turkana (2)
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-
East African Rift (8)
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Gregory Rift (17)
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Atlantic Ocean
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South Atlantic
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Walvis Ridge (1)
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-
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Mediterranean Sea (1)
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Strait of Gibraltar (1)
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-
commodities
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brines (1)
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elements, isotopes
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halogens
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fluorine (1)
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hydrogen
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deuterium (1)
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isotope ratios (2)
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isotopes
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radioactive isotopes
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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stable isotopes
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deuterium (1)
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Nd-144/Nd-143 (1)
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O-18/O-16 (1)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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Sr-87/Sr-86 (1)
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-
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metals
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alkali metals
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potassium (1)
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alkaline earth metals
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magnesium (1)
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strontium
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Sr-87/Sr-86 (1)
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lead
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-208/Pb-204 (1)
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rare earths
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lanthanum (1)
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neodymium
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Nd-144/Nd-143 (1)
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yttrium (1)
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-
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noble gases
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argon (2)
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oxygen
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O-18/O-16 (1)
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-
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fossils
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borings (1)
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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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Primates
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Hominidae (1)
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simians (1)
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geochronology methods
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Ar/Ar (2)
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K/Ar (3)
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geologic age
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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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lower Pleistocene (1)
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Tertiary
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Neogene
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Miocene
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upper Miocene
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Messinian (1)
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-
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Pliocene (1)
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-
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upper Cenozoic (1)
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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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igneous rocks
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igneous rocks
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carbonatites (2)
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plutonic rocks
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ijolite (1)
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ultramafics (1)
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volcanic rocks
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basalts (4)
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glasses
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obsidian (1)
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nephelinite (1)
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phonolites (1)
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rhyolites
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pantellerite (1)
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minerals
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oxides
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baddeleyite (1)
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niobates
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pyrochlore (1)
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silicates
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chain silicates
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amphibole group
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clinoamphibole
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hastingsite (1)
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kaersutite (1)
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-
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-
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Primary terms
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absolute age (4)
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Africa
-
East Africa
-
Afar Depression (1)
-
Ethiopia (2)
-
Ethiopian Rift (3)
-
Kenya (10)
-
Lake Turkana (2)
-
Tanzania (4)
-
Turkana Basin (2)
-
-
East African Lakes
-
Lake Turkana (2)
-
-
East African Rift (8)
-
Gregory Rift (17)
-
-
Atlantic Ocean
-
South Atlantic
-
Walvis Ridge (1)
-
-
-
brines (1)
-
Cenozoic
-
Quaternary
-
Holocene (1)
-
Pleistocene
-
lower Pleistocene (1)
-
-
-
Tertiary
-
Neogene
-
Miocene
-
upper Miocene
-
Messinian (1)
-
-
-
Pliocene (1)
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-
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upper Cenozoic (1)
-
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chemical analysis (1)
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Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia
-
Theria
-
Eutheria
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Primates
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Hominidae (1)
-
simians (1)
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-
-
-
-
-
-
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crust (3)
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crystal chemistry (1)
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crystal structure (2)
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deformation (1)
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faults (7)
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geochemistry (3)
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geochronology (1)
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geomorphology (1)
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geophysical methods (1)
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ground water (1)
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heat flow (1)
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hydrogen
-
deuterium (1)
-
-
igneous rocks
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carbonatites (2)
-
plutonic rocks
-
ijolite (1)
-
ultramafics (1)
-
-
volcanic rocks
-
basalts (4)
-
glasses
-
obsidian (1)
-
-
nephelinite (1)
-
phonolites (1)
-
rhyolites
-
pantellerite (1)
-
-
-
-
isotopes
-
radioactive isotopes
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
stable isotopes
-
deuterium (1)
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (1)
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
Sr-87/Sr-86 (1)
-
-
-
magmas (2)
-
Mediterranean Sea (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Aptian (1)
-
-
-
-
metals
-
alkali metals
-
potassium (1)
-
-
alkaline earth metals
-
magnesium (1)
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
lead
-
Pb-206/Pb-204 (1)
-
Pb-207/Pb-204 (1)
-
Pb-208/Pb-204 (1)
-
-
rare earths
-
lanthanum (1)
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
yttrium (1)
-
-
-
noble gases
-
argon (2)
-
-
oxygen
-
O-18/O-16 (1)
-
-
paleoclimatology (1)
-
paleogeography (2)
-
petrology (2)
-
plate tectonics (5)
-
remote sensing (1)
-
sea water (1)
-
sedimentary rocks
-
chemically precipitated rocks
-
evaporites (1)
-
-
-
sedimentary structures
-
biogenic structures
-
stromatolites (1)
-
-
-
sedimentation (1)
-
springs (1)
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stratigraphy (1)
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structural geology (3)
-
tectonics
-
neotectonics (3)
-
-
tectonophysics (1)
-
thermal waters (1)
-
volcanology (3)
-
-
sedimentary rocks
-
sedimentary rocks
-
chemically precipitated rocks
-
evaporites (1)
-
-
-
-
sedimentary structures
-
borings (1)
-
sedimentary structures
-
biogenic structures
-
stromatolites (1)
-
-
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Gregory Rift
Tectonic and Paleoclimatic Setting for Hominin Evolution in Eastern Africa Available to Purchase
Oscillatory- and sector-zoned pyrochlore from carbonatites of the Kerimasi volcano, Gregory rift, Tanzania Available to Purchase
Oxo-magnesio-hastingsite, NaCa 2 (Mg 2 Fe 3 3 + )(Al 2 Si 6 )O 22 O 2 , a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania Available to Purchase
Fluorine-, yttrium- and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano and surrounding explosion craters, Gregory Rift, northern Tanzania Available to Purchase
The Gregory Rift Valley and Neogene—Recent Volcanoes of Northern Tanzania
Abstract The structure and volcanic activity of the northern Tanzania sector of the Gregory Rift Valley have hitherto been described less than those in Ethiopia and Kenya. This book focuses on northern Tanzania where, although the volcanic area is smaller than those to the north, there are major features such as Kilimanjaro, the highest mountain on the African continent, Ngorongoro, one of the largest calderas on Earth, and Oldoinyo Lengai, the world’s only active carbonatite volcano. Following an account of the discovery and early exploration of the Rift Valley, there are descriptions of the individual volcanoes. These are set within the context of the regional geology and geophysics of the rift valley and in relation to the structural evolution of the rift and its associated sedimentary basins which include Olduvai, an important site in the history of human evolution. The volume concludes with a discussion of the volcanism in relation to the plume-related African Superswell.