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The Gregory Rift Valley and Neogene-Recent Volcanoes of Northern Tanzania

Product Code: M0033
Series: GSL Memoirs - print copy
Author/Editor: J B Dawson
Publication Date: 05 December 2008
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Geological Society Memoir 33

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.

Type: Book
Ten Digit ISBN: 1-86239-267-6
Thirteen Digit ISBN: 978-1-86239-267-0
Publisher: GSL
Binding: Paperback
Pages: 112
Weight: 0.56 kg


  • Acknowledgements
  • Introduction
  • Discovery of the African rift valleys: early work on the Gregory Rift Valley and volcanoes in Northern Tanzania
  • Regional geology
  • Geophysical evidence for the structure of the crust and upper mantle of the Tanzania craton and the Gregory Rift Valley
  • Tectonic development of the rift structures
  • Rift-associated sedimentary basins
  • The Neogene–Recent volcanic rocks
  • Regional comparisons, petrochemistry and petrogenesis
  • Future work
  • Appendix 1
  • Appendix 2
  • Index


Robert F. Martin

A well-balanced memoir in the Geological Society series, most of which arise from a successful conference..... Dr Dawson has succeeded admirably in presenting the balanced coverage sought by the Society.......

Peter Webb

This book provides a very comprehensive and readable summary of its structure and geological history.

The book is very well written and illustrated, with numerous figures and 26 good quality colour plates of the volcanoes themselves and of numerous thin sections.

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