Rifts And Volcanoes
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Rifts and Volcanoes
Author | : Celia Nyamweru |
Publsiher | : Unknown |
Total Pages | : 142 |
Release | : 1980 |
Genre | : Great Rift Valley |
ISBN | : STANFORD:36105017492013 |
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The Gregory Rift Valley and Neogene recent Volcanoes of Northern Tanzania
Author | : John Barry Dawson |
Publsiher | : Geological Society of London |
Total Pages | : 116 |
Release | : 2008 |
Genre | : Geology, Stratigraphic |
ISBN | : 1862392676 |
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The structure and volcanic activity of the northern Tanzania sector of the Gregory Rift Valley have hitherto been less well described 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 as related to the plume-related African Superswell.
The Afar Volcanic Province Within the East African Rift System
Author | : G. Yirgu,Cindy J. Ebinger,P. K. H. Maguire |
Publsiher | : Geological Society of London |
Total Pages | : 344 |
Release | : 2006 |
Genre | : Nature |
ISBN | : 1862391963 |
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The seismically and volcanically active East African Rift System is an ideal laboratory for continental break-up processes: it encompasses all stages of rift development. Its northernmost sectors within the Afar volcanic province include failed rifts, nascent sea-floor spreading, and youthful passive continental margins associated with one or more mantle plumes. A number of models have been proposed to explain the success and failure of continental rift zones, but there remains no consensus on how strain localizes to achieve rupture of initially 125-250 km-thick plates, or on the interaction between the plates and asthenospheric processes. This collection of papers provides new structural, stratigraphic, geochemical and geophysical data and numerical models needed to resolve fundamental questions concerning continental break-up and mantle plume processes. The focus is on how mantle melt intrudes and is distributed through the plate, and how this magma intrusion process controls along-axis segmentation and facilitates break-up.
From Precambrian Rift Volcanoes to the Mississippian Shelf Margin
Author | : Kevin R. Evans,James S. Aber |
Publsiher | : Geological Society of America |
Total Pages | : 166 |
Release | : 2010-01-01 |
Genre | : History |
ISBN | : 9780813700175 |
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"Despite a long history of geologic investigations in the Ozarks, new studies and analyses continue to elucidate our understanding of the complex interconnection between the basement, extensive carbonate platforms, structural overprinting, mineralization, karstification, and hydrology. This guidebook volume highlights a few of these aspects as well as the connection to culture, history, and economic development of the Ozarks region."--Publisher's description.
Petrology and Geochemistry of Continental Rifts
Author | : E.R. Neumann,I.B. Ramberg |
Publsiher | : Springer Science & Business Media |
Total Pages | : 314 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9789400998032 |
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Proceedings of the NATO Advanced Study Institute, Oslo, Norway, July 27-August 5, 1977
Volcanoes and the Environment
Author | : Joan Marti,Joan MartÃ,Gerald Ernst |
Publsiher | : Cambridge University Press |
Total Pages | : 496 |
Release | : 2005-10-06 |
Genre | : Nature |
ISBN | : 0521592542 |
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Publisher Description
Magmatic Rifting and Active Volcanism
Author | : T.J. Wright,A. Ayele,D.J. Ferguson,T. Kidane,C. Vye-Brown |
Publsiher | : Geological Society of London |
Total Pages | : 373 |
Release | : 2016-09-06 |
Genre | : Science |
ISBN | : 9781862397293 |
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A major rifting episode began in the Afar region of northern Ethiopia in September 2005. Over a ten-day period, c. 2.5 km3 of magma were intruded along a 60 km-long dyke separating the Arabian and Nubian plates. Over the next five years, a further 13 dyke intrusions caused continued extension, eruptions and seismicity. This activity led to a renewed international focus on the role of magmatism in rifting, with major international collaborative projects working in Afar and Ethiopia to study the ongoing activity and to place it in a broader context. This book brings together articles that explore the role of magmatism in rifting, from the initiation of continental break-up through to full seafloor spreading. We also explore the hazards related to rifting and the associated volcanism. This work has implications for our understanding of how continents break-up and the associated distribution of resources in rift basins and continental margins.
Tectonics and Geophysics of Continental Rifts
Author | : I.B. Ramberg,E.R. Neumann |
Publsiher | : Springer Science & Business Media |
Total Pages | : 444 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9789400998063 |
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Proceedings of the NATO Advanced Study Institute, Oslo, Norway, July 27-August 5, 1977