Results 11 to 20 of about 82,271 (151)

Magmatism of the Kenya Rift Valley : a review. [PDF]

open access: yes, 2003
Tertiary–Recent magmatism in the Kenya Rift Valley was initiated c. 35 Ma, in the northern part of Kenya. Initiation of magmatism then migrated southwards, reaching northern Tanzania by 5–8 Ma.
MacDonald, Raymond
core   +4 more sources

Quaternary diatomaceous sediments and the geological evolution of lakes, Turkana, Baringo and Bogoria Kenya Rift Valley. [PDF]

open access: yes, 1981
PhdQuaternary lacustrine sediments are described from three contrasting areas within the Kenya Rift Valley. Descriptions are given of the mid-Pleistocene Olorgesailie Formation at Olorgesailie.
Owen, Richard Bernhart
core   +4 more sources

Analogue Modelling of Inverted Oblique Rift Systems [PDF]

open access: yes, 2005
The geometric evolution of brittle fault systems in inverted oblique and offset rift systems has been simulated using scaled sandbox analogue models. Dry fine-grained quartz sand was used to represent the brittle upper crust.
Muñoz, J.A.   +14 more
core   +1 more source

Breaking up the hanging wall of a rift-border fault: The 2009 Karonga earthquakes, Malawi [PDF]

open access: yes, 2010
The southern East African Rift has an unusually large seismogenic thickness (35–40 km), which is responsible for wide tilted basins and extremely long faults with the potential for M7-8 normal-faulting earthquakes.
Nissen, E.   +12 more
core   +1 more source

Scale-dependent influence of pre-existing basement shear zones on rift faulting : a case study from NE Brazil [PDF]

open access: yes, 2013
Rifting of continental crust initiates faults that are commonly influenced by pre-existing structures. We document newly identified faults cutting Precambrian units in the interior of the NE Brazilian margin to assess the effects of structural ...
Lunn, Rebecca   +6 more
core   +4 more sources

Deep structure of the Baringo Rift Basin (central Kenya) from three-dimensional magnetotelluric imaging: Implications for rift evolution [PDF]

open access: yes, 2000
Three-dimensional modeling of data from 31 vertical electrical and 24 magnetotelluric soundings collected in the Baringo-Bogoria Basin (central Kenya Rift Valley) shows a thick succession of well-defined tectonostratigraphic units beneath the Recent ...
Kathy Whaler   +11 more
core   +1 more source

Seismicity from february 2006 to september 2007 at the Rwenzori Mountains, East African Rift: earthquake distribution, magnitudes and source mechanisms [PDF]

open access: yes, 2012
We have analysed the microseismic activity within the Rwenzori Mountains area in the western branch of the East African Rift. Seismogram recordings from a temporary array of up to 27 stations reveal approximately 800 events per month with local ...
Lindenfeld, Michael   +7 more
core   +2 more sources

Features of dike magmatism in the Northern frame of the Pechenga structure

open access: yesVestnik MGTU, 2019
A comprehensive study of Paleoproterozoic dike complexes within North-Western part of the Kola region has been carried out. The research allows establish stages of their formation, correlate with thickness of volcanites and reconstruct the geodynamic ...
Terekhov E. N.   +6 more
doaj   +1 more source

Cupriferous basalts of the Northern Urals

open access: yesЛитосфера, 2017
Characteristics and distinctive features of cupriferous basalts in the world are given. Deposits of the Superior Lake in the United States are considered as a reference.
S. Savchuk Yury   +2 more
doaj   +1 more source

Rift systems of the Russian Eastern Arctic shelf and Arctic deep water basins: link between geological history and geodynamics

open access: yesГеодинамика и тектонофизика, 2017
In our study, we have developed a new tectonic scheme of the Arctic Ocean, which is based mainly on seismic profiles obtained in the Arctic-2011, Arctic-2012 and Arctic-2014 Projects implemented in Russia.
A. M. Nikishin   +3 more
doaj   +1 more source

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