East African rifts

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;...

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Bibliographic Details
Call Number:Libro Electrónico
Corporate Author: International Upper Mantle Committee
Other Authors: Girdler, R. W. (Editor)
Format: Electronic eBook
Language:Inglés
Published: Amsterdam, New York, Elsevier Pub. Co., 1972.
Series:Developments in geotectonics ; 7.
International upper mantle project. Scientific report ; no. 40.
Subjects:
Rifts (Geology) > Africa, East > Congresses.
Geology > Africa, Eastern > Congresses.
Foss�es (G�eologie) > Congr�es.
G�eologie > Afrique orientale > Congr�es.
SCIENCE > Earth Sciences > Geography.
SCIENCE > Earth Sciences > Geology.
Geology
Rifts (Geology)
Eastern Africa
Africa, East
Congress
proceedings (reports)
Conference papers and proceedings
Conference papers and proceedings.
Actes de congr�es.
Online Access:Texto completo
Texto completo
Table of Contents:
  • 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 MAPCRUSTAL 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 EXPERIMENTRESULTS; 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
  • CHAPTER 10. THE KENYA RIFT VOLCANICS: A NOTE ON VOLUMES AND CHEMICAL COMPOSITIONABSTRACT; 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
  • INTRODUCTIONSEISMICITY; 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

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