Keywords:
Rifts (Geology) -- Africa, East -- Congresses.
;
Electronic books.
Description / Table of Contents:
Developments in Geotectonics, 7: East African Rifts focuses on the movements, structure, and behavior of the East African rift system. The selection first offers information on the surface structure and plate tectonics of Afar; tectonic and magmatic significance of volcanism in the Afar depression; and preliminary interpretation of the gravity field of Afar, northeast Ethiopia. Discussions focus on crustal models of Afar based on gravity and seismic data, tectonics, volcanism, geological setting, and crustal extension. The text also elaborates on the gravity survey of the central part of the Ethiopian Rift Valley and an aeromagnetic survey of the Afar triangle of Ethiopia. The book examines the arrangement and development of continental rift zones, East African rift development, and the seismicity of the East African rift system. Topics include earthquake mechanisms, seismicity, and the main categories of rift zones. The manuscript is a dependable reference for readers interested in the East African rifts.
Type of Medium:
Online Resource
Pages:
1 online resource (187 pages)
Edition:
1st ed.
ISBN:
9781483257150
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1837477
DDC:
551.87
Language:
English
Note:
Front Cover -- East African Rifts -- Copyright Page -- Table of Contents -- LIST OF AUTHORS -- FOREWORD -- CHAPTER 1. SURFACE STRUCTURE AND PLATE TECTONICS OF AFAR -- ABSTRACT -- INTRODUCTION -- GEOLOGICAL SETTING -- STRUCTURE -- CRUSTAL EXTENSION IN AFAR -- AFAR AND PLATE TECTONICS -- REFERENCES -- CHAPTER 2. VOLCANISM IN THE AFAR DEPRESSION: ITS TECTONIC AND MAGMATIC SIGNIFICANCE -- ABSTRACT -- TECTONICS -- VOLCANISM -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 3. A PRELIMINARY INTERPRETATION OF THE GRAVITY FIELD OF AFAR, NORTHEAST ETHIOPIA -- ABSTRACT -- INTRODUCTION -- COMPILATION OF THE BOUGUER MAP -- A QUANTITATIVE INTERPRETATION OF THE BOUGUER MAP -- CRUSTAL MODELS OF AFAR BASED ON GRAVITY AND SEISMIC DATA -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 4. A GRAVITY SURVEY OF THE CENTRAL PART OF THE ETHIOPIAN RIFT VALLEY -- ABSTRACT -- SUMMARY -- INTRODUCTION -- DATA -- INTERPRETATION -- CONCLUSION -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 5. AN AEROMAGNETIC SURVEY OF THE AFAR TRIANGLE OF ETHIOPIA -- ABSTRACT -- REFERENCES -- CHAPTER 6. LOCAL EARTHQUAKE PHASES OBSERVED AT ADDIS ABABA, ETHIOPIA -- ABSTRACT -- SUMMARY -- REFERENCES -- CHAPTER 7. SEISMIC PROFILES IN THE DJIBOUTI AREA -- ABSTRACT -- INTRODUCTION -- DESCRIPTION OF THE EXPERIMENT -- RESULTS -- INTERPRETATION -- CONCLUSION -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 8. CONTINENTAL RIFT ZONES: THEIR ARRANGEMENT AND DEVELOPMENT -- ABSTRACT -- INTRODUCTION -- MAIN CATEGORIES OF RIFT ZONES -- MAIN TYPES OF CONTINENTAL RIFT ZONES -- RIFTS AND RIFT LIKE BELTS -- INTERRELATIONS BETWEEN GEOSYNCLINAL-OROGENIC BELTS AND RIFT BELTS -- PRE-CENOZOIC RIFT ZONES AND BELTS -- REFERENCES -- CHAPTER 9. EAST AFRICAN RIFT DEVELOPMENT -- ABSTRACT -- INTRODUCTION -- THE GREGORY RIFT -- THE WESTERN RIFT -- CONCLUSION -- ACKNOWLEDGEMENTS -- REFERENCES.
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CHAPTER 10. THE KENYA RIFT VOLCANICS: A NOTE ON VOLUMES AND CHEMICAL COMPOSITION -- ABSTRACT -- INTRODUCTION -- DISTRIBUTION AND VOLUMES -- CHEMICAL COMPOSITIONS -- SUMMARY AND CONCLUSIONS -- REFERENCES -- CHAPTER 11. A GEOCHEMICAL STUDY OF SILALI VOLCANO, KENYA, WITH SPECIAL REFERENCE TO THE ORIGIN OF THE INTERMEDIATE ACID ERUPTIVES OF THE CENTRAL RIFT VALLEY -- ABSTRACT -- INTRODUCTION -- THE ERUPTIVITY OF THE CENTRAL GREGORY RIFT VALLEY -- SUMMARY OF THE GEOLOGY OF SILALI -- GEOCHEMISTRY -- DISCUSSION -- CONCLUSIONS -- ACKNOWLEDGEMENT -- REFERENCES -- CHAPTER 12. THE SEISMICITY OF THE EAST AFRICAN RIFT SYSTEM -- ABSTRACT -- INTRODUCTION -- SEISMICITY -- EARTHQUAKE MECHANISMS -- TRAVEL-TIME DELAYS -- TRAVEL TIME DELAYS AND GRAVITY ANOMALIES -- REFERENCES -- CHAPTER 13. STUDY OF MICROEARTHQUAKES IN THE RIFT ZONES OF EAST AFRICA -- ABSTRACT -- INTRODUCTION -- LOCATIONS AND TECHNIQUES -- RESULTS -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 14. GRAVITY AND MAGNETIC SURVEYS IN NORTHERN TANZANIA AND SOUTHERN KENYA -- ABSTRACT -- INTRODUCTION -- THE GRAVITY SURVEY -- INTERPRETATION OF THE GRAVITY ANOMALIES -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 15. REPORT ON AIRMAGNETIC SURVEYS OF TWO AREAS IN THE KENYA RIFT VALLEY -- ABSTRACT -- INTRODUCTION -- PLANNING OF THE AIRMAGNETIC SURVEY -- AIRMAGNETIC SURVEY OF THE LAKE MAGADI AREA -- AIRMAGNETIC SURVEY OF THE LAKE HANNINGTON AREA -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 16. SOME COMMENTS ON THE RESULTS OF A SEISMIC REFRACTION EXPERIMENT IN THE KENYA RIFT -- ABSTRACT -- STRUCTURE -- SEISMIC REFRACTION EXPERIMENTS -- INTERPRETATION -- CONCLUSION -- REFERENCES -- CHAPTER 17. RAYLEIGH WAVE PHASE VELOCITIES FOR THE PATH ADDIS ABABA-NAIROBI -- ABSTRACT -- INTRODUCTION -- ANALYSIS AND INTERPRETATION -- REFERENCES.
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CHAPTER 18. THE STRUCTURE OF EAST AFRICA USING SURFACE WAVE DISPERSION AND DURHAM SEISMIC ARRAY DATA -- ABSTRACT -- INTRODUCTION -- THE GENERAL STRUCTURE OF EAST AFRICA -- SEISMIC ARRAY DATA -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 19. HEAT FLOW MEASUREMENTS IN EAST AFRICA -- ABSTRACT -- REFERENCES -- INTERNATIONAL UPPER MANTLE COMMITTEE -- UPPER MANTLE PROJECT - REPORTS -- SCIENTIFIC REPORTS -- REPORTS OF THE INTERNATIONAL UPPER MANTLE COMMITTEE.
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