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Volcano spacings and lithospheric attenuation in the Eastern Rift of AfricaThe Eastern Rift of Africa runs the gamut of crustal and lithospheric attenuation from undeformed shield through attenuated rift margin to active neo-oceanic spreading zones. It is therefore peculiarly well suited to an examination of relationships between volcano spacings and crust/lithosphere thickness. Although lithospheric thickness is not well known in Eastern Africa, it appears to have direct expression in the surface spacing of volcanoes for any given tectonic regime. This applies whether the volcanoes are essentially basaltic, silicic, or alkaline-carbonatitic. No evidence is found for control of volcano sites by a pre-existing fracture grid in the crust.
Document ID
19770030996
Document Type
Reprint (Version printed in journal)
Authors
Mohr, P. A.
(Harvard College Observatory and Smithsonian Astrophysical Observatory Cambridge, Mass., United States)
Wood, C. A.
(Brown University Providence, R.I., United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1976
Publication Information
Publication: Earth and Planetary Science Letters
Volume: 33
Subject Category
Geophysics
Funding Number(s)
CONTRACT_GRANT: NGR-09-015-002
CONTRACT_GRANT: NAS5-2178
Distribution Limits
Public
Copyright
Other
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