Keywords:
Rifts (Geology) -- Congresses.
;
Electronic books.
Description / Table of Contents:
Selected papers from the Lunar and Planetary Institute Topical Conference, St. Helena, CA, USA, 3-5 Dec. 1981.
Type of Medium:
Online Resource
Pages:
1 online resource (685 pages)
Edition:
1st ed.
ISBN:
9781483289823
Series Statement:
Issn Series ; v.Volume 19
URL:
https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1838213
DDC:
551.87
Language:
English
Note:
Front Cover -- Processes of Continental Rifting -- Copyright Page -- Table of Contents -- Dedication -- Preface -- List of Authors -- CHAPTER 1. INTRODUCTION-PROCESSES OF CONTINENTAL RIFTING -- MODELS OF RIFTING -- CONSTRAINTS ON THE MODELS -- RESOURCES ASSOCIATED WITH RIFTING -- CONCLUDING REMARKS -- ACKNOWLEDGEMENTS -- REFERENCES CITED -- Part 1: Models of Rifting -- CHAPTER 2. MECHANISM OF GRABEN FORMATION-THE WEDGE SUBSIDENCE HYPOTHESIS -- ABSTRACT -- INTRODUCTION -- THE WEDGE SUBSIDENCE HYPOTHESIS -- FINITE ELEMENT MODELLING OF GRABEN FORMATION -- SOURCE OF THE TENSILE STRESS -- CONCLUSIONS -- ACKNOWLEDGEMENT -- REFERENCES -- CHAPTER 3. RIFTS AND SWELLS: GEOPHYSICAL CONSTRAINTS ON CAUSALITY -- ABSTRACT -- INTRODUCTION -- UPLIFT CAUSED BY RIFTING -- SWELL-INDUCED RIFTS -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 4. MECHANISMS OF ACTIVE AND PASSIVE RIFTING -- ABSTRACT -- INTRODUCTION -- STRESSES GENERATED BY LITHOSPHERIC THINNING -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 5. MECHANISMS OF UPLIFT PRECEDING RIFTING -- ABSTRACT -- INTRODUCTION -- THE THERMAL CONDUCTION MODEL -- THE DIAPIRIC UPRISE MODEL -- CONCLUSIONS -- REFERENCES -- CHAPTER 6. CONVECTIVE THINNING OF THE LITHOSPHERE: A MECHANISM FOR RIFTING AND MID-PLATE VOLCANISM ON EARTH, VENUS, AND MARS -- ABSTRACT -- INTRODUCTION -- THE MODEL -- SOLUTIONS TO THE MODEL EQUATIONS -- DISCUSSION -- THINNING OF THE CONTINENTAL LITHOSPHERE -- VULNERABILITY OF THE CONTINENTAL LITHOSPHERE -- THINNING OF THE OCEANIC LITHOSPHERE -- UPLIFT OF THE OCEANIC LITHOSPHERE OVER HOT SPOTS -- THINNING OF THE LITHOSPHERES OF VENUS AND MARS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 7. MECHANICAL ASPECTS OF CONTINENTAL RIFTING -- ABSTRACT -- INTRODUCTION -- PLATE COLLISION -- LINKING OF HOT SPOTS -- LITHOSPHERIC EXTENSION -- MANTLE DIAPIR MODEL -- DISCUSSION -- ACKNOWLEDGEMENT.
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REFERENCES -- CHAPTER 8. SUBMARINE RIFTING AT MID-OCEAN RIDGES -- ABSTRACT -- INTRODUCTION -- CONDITIONS AT THE RIDGE CREST -- MATHEMATICAL DESCRIPTION OF THE MODEL -- MODEL RESULTS -- DISCUSSION AND CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 9. HOTSPOT TRACKS AND THE EARLY RIFTING OF THE ATLANTIC -- ABSTRACT -- INTRODUCTION -- PLATE RECONSTRUCTIONS -- HOTSPOT TRACKS -- UPLIFT OF SHIELDS -- SUMMARY -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 10. MECHANISM OF SUBSIDENCE OF ANCIENT CRATONIC RIFT BASINS -- ABSTRACT -- INTRODUCTION -- RHEOLOGICAL FLEXURE MODEL OF THE LITHOSPHERE -- MATERIAL PARAMETERS -- RESPONSE OF THE NONLINEAR MAXWELL FLEXURE MODEL -- THE REACTIVATION OF CRATONIC BASINS -- SUMMARY AND CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 11. PHENOMENA OF PULSATION TECTONICS RELATED TO THE BREAKUP OF THE EASTERN NORTH AMERICAN CONTINENTAL MARGIN -- ABSTRACT -- INTRODUCTION -- SPREADING RATE IMPLICATIONS -- IMPLICATIONS FOR GLOBAL PROCESSES, PULSATION TECTONICS, AND ORIGIN OF THE FIRST ORDER GEO-CYCLES -- SUMMARY AND CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- Part 2: Geophysical Constraints on Rifting -- CHAPTER 12. GRAVITY STUDY OF THE CENTRAL AFRICAN RIFT SYSTEM: A MODEL OF CONTINENTAL DISRUPTION -- ABSTRACT -- INTRODUCTION -- GEOLOGY OF THE NGAOUNDERE AND ABU GABRA RIFTS -- GRAVITY DATA -- INTERPRETATION -- TECTONIC MODEL -- DISCUSSION -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 13. GRAVITY STUDY OF THE CENTRAL AFRICAN RIFT SYSTEM: A MODEL OF CONTINENTAL DISRUPTION -- ABSTRACT -- INTRODUCTION -- GEOLOGY AND EPEIROGENY OF THE DARFUR DOME -- GRAVITY STUDY -- DISCUSSION -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 14. BAIKAL RIFT: ACTIVE OR PASSIVE? - COMPARISON OF THE BAIKAL AND KENYA RIFT ZONES -- ABSTRACT -- INTRODUCTION -- VOLCANICS AND SEDIMENTS -- ARCHED UPLIFTS -- RIFT DEPRESSIONS.
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GREAT DYKES -- THE EARTH'S CRUST AND THE MAGNITUDE OF ITS EXTENSION -- LITHOSPHERE AND ASTHENOSPHERE -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 15. PROCESSES OF PLANETARY RIFTING AS SEEN IN THE RIFTING AND BREAK UP OF AFRICA -- ABSTRACT -- INTRODUCTION -- RIFTING AND THINNING: WHICH COMES FIRST? -- EVOLUTION OF RIFTING: CONTINUOUS OR DISCONTINUOUS -- A REVISED MODEL FOR RIFTING AND LITHOSPHERIC THINNING -- REFERENCES -- CHAPTER 16. THE DISTRIBUTION AND IMPLICATIONS OF HEAT FLOW FROM THE GREGORY RIFT IN KENYA -- ABSTRACT -- INTRODUCTION -- HEAT FLOW METHODS AND CALCULATIONS -- BOGORIA -- EBURRU -- OLKARIA -- NATRON -- CONDUCTIVE VERSUS ADVECTIVE MEASUREMENTS -- SPATIAL DISTRIBUTION OF GEOTHERMAL REGIONS IN THE GREGORY RIFT: IMPLICATIONS FOR VOLCANIC, TECTONIC AND THERMAL WAVE LENGTHS -- SUMMARY AND CONCLUSIONS -- REFERENCES -- CHAPTER 17. CONSTRAINTS ON RIFT THERMAL PROCESSES FROM HEAT FLOW AND UPLIFT -- ABSTRACT -- INTRODUCTION -- HEAT FLOW DATA FROM CONTINENTAL RIFT ZONES -- UPLIFT IN CONTINENTAL RIFT ZONES -- APPLICATION OF THERMAL UPLIFT MODELS TO CONTINENTAL RIFTS -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 18. MAGNETOTELLURIC RESULTS OPPOSING MAGMA ORIGIN OF CRUSTAL CONDUCTORS IN THE RIO GRANDE RIFT -- ABSTRACT -- INTRODUCTION -- SOURCES OF CRUSTAL CONDUCTIVE ZONES -- RIO GRANDE RIFT MAGNETOTELLURIC STUDIES -- RIO GRANDE RIFT GEOELECTRIC MODELS -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 19. CRUSTAL STRUCTURE OF THE NORTHERN MISSISSIPPI EMBAYMENT AND A COMPARISON WITH OTHER CONTINENTAL RIFT ZONES -- ABSTRACT -- INTRODUCTION -- REGIONAL SETTING -- REFRACTION DATA -- THE AXIAL PROFILE -- THE CROSS PROFILES -- GRAVITY MODELS -- DISCUSSION OF REFRACTION AND GRAVITY RESULTS -- COMPARISON WITH OTHER CONTINENTAL RIFTS -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES.
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CHAPTER 20. THE ROLE OF SEISMIC REFRACTION DATA FOR STUDIES OF THE ORIGIN AND EVOLUTION OF CONTINENTAL RIFTS -- ABSTRACT -- INTRODUCTION -- METHODS OF OBSERVATION AND ANALYSIS -- STATUS OF REFRACTION PROFILING IN CONTINENTAL RIFTS -- CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- Part 3: Geological and Geochemical Constraints on Rifting -- CHAPTER 21. CRUSTAL STRUCTURE OF RIFTED CONTINENTAL MARGINS: GEOLOGICAL CONSTRAINTS FROM THE PROTEROZOIC ROCKS OF THE CANADIAN SHIELD -- ABSTRACT -- INTRODUCTION -- TYPES OF PROTEROZOIC RIFT SEQUENCES -- GEOLOGY OF RIFT ASSEMBLAGES RELATED TO POSSIBLE PROTEROZOIC CONTINENTAL MARGINS -- DISCUSSION: CRUSTAL STRUCTURE OF CONTINENTAL MARGINS -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 22. THE ROLE OF RIFTING IN THE TECTONIC DEVELOPMENT OF THE MIDCONTINENT, U.S.A. -- ABSTRACT -- INTRODUCTION -- PRECAMBRIAN RIFTS -- EOCAMBRIAN RIFTS -- MESOZOIC AND CENOZOIC RIFTS -- DISCUSSION -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 23. GEOLOGIC AND GEOCHEMICAL EVIDENCE FOR THE NATURE AND DEVELOPMENT OF THE MIDDLE PROTEROZOIC (KEWEENAWAN) MIDCONTINENT RIFT OF NORTH AMERICA -- ABSTRACT -- INTRODUCTION -- EVIDENCE AND INTERPRETATION -- DISCUSSION -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 24. TIMING AND CHEMISTRY OF IGNEOUS EVENTS ASSOCIATED WITH THE SOUTHERN OKLAHOMA AULACOGEN -- ABSTRACT -- INTRODUCTION -- GEOLOGICAL SETTING -- DEVELOPMENT OF THE AULACOGEN -- SUMMARY AND CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 25. ORIGIN OF THE OSLO GRABEN IN RELATION TO THE HERCYNIAN-ALLEGHENIAN OROGENY AND LITHOSPHERIC RIFTING IN THE NORTH ATLANTIC -- ABSTRACT -- INTRODUCTION -- DEFINITION OF THE OSLO GRABEN -- DOLERITE INTRUSIVES -- A LATE CARBONIFEROUS OCEANIC RIFT (HYPOTHESIS I) -- LINKS BETWEEN THE HERCYNIAN OROGENY, DYKES AND OSLO GRABEN (HYPOTHESIS II) -- TEST OF HYPOTHESES -- PLATE TECTONIC SYNTHESIS.
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CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 26. ACTIVE VERSUS PASSIVE CONTINENTAL RIFTING: EVIDENCE FROM THE WEST AFRICAN RIFT SYSTEM -- ABSTRACT -- INTRODUCTION -- THE WEST AFRICAN RIFT SYSTEM -- ORIGIN OF THE CAMEROON LINE -- IMPLICATIONS FOR CONTINENTAL RIFTING -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 27. TECTONIC AND GEOLOGIC EVOLUTION OF THE ESPANOLA BASIN, RIO GRANDE RIFT: STRUCTURE, RATE OF EXTENSION, AND RELATION TO THE STATE OF STRESS IN THE WESTERN UNITED STATES -- ABSTRACT -- INTRODUCTION -- STRATIGRAPHY -- STRUCTURE -- TECTONIC AND GEOLOGIC HISTORY -- RATE OF EXTENSION -- RELATION OF RIO GRANDE RIFT TECTONICS TO REGIONAL STRESSES -- WAS RIFTING IN THE RIO GRANDE RIFT AND BASIN AND RANGE ACTIVE OR PASSIVE -- SUMMARY AND CONCLUSIONS -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 28. THE MORTON-BLACK HYPOTHESIS FOR THE THINNING OF CONTINENTAL CRUST-REVISITED IN WESTERN AFAR -- ABSTRACT -- INTRODUCTION -- THE WESTERN MARGIN OF AFAR AT LATITUDE 12.58N -- EVOLUTION OF THE WESTERN AFAR MARGIN -- THE MORTON-BLACK HYPOTHESIS REVIEWED -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 29. CONTINENTAL RIFT JUMPS -- ABSTRACT -- INTRODUCTION -- ICELANDIC JUMPS -- AFAR JUMPS -- BENUE TROUGH-CAMEROON VOLCANICS -- KENYA RIFT JUMPS -- JUMPING RELATIONS -- MORE JUMPS -- CONCLUSIONS -- ACKNOWLEDGEMENTS -- REFERENCES -- CHAPTER 30. SURFACE DEFORMATION IN VOLCANIC RIFT ZONES -- ABSTRACT -- INTRODUCTION -- THE SOURCE OF DISPLACEMENT FIELDS -- IMPLICATIONS OF THE SURFACE DISPLACEMENTS -- INTERPRETATION OF CONTINUOUS VERTICAL DISPLACEMENT PROFILES -- INTERPRETATION OF DISCONTINUOUS VERTICAL DISPLACEMENT PROFILES -- THE NATURE OF SURFACE STRUCTURES -- THE NATURE OF SURFACE STRUCTURES -- INTERPRETATION OF GROUND DEFORMATION -- DISCUSSION -- ACKNOWLEDGMENTS -- REFERENCES -- CHAPTER 31. THE CHEMICAL AND THERMAL EVOLUTION OF RIFTS -- ABSTRACT.
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RIFTS AS PERMISSIVE STRUCTURES IN OCEANS AND CONTINENTS.
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