Active Tectonics and Seismic Potential of Alaska

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Jeffrey T. Freymueller
Wiley, Jan 14, 2008 - Science - 431 pages
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This multidisciplinary monograph provides the first modern integrative summary focused on the most spectacular active tectonic systems in North America.

Encompassing seismology, tectonics, geology, and geodesy, it includes papers that summarize the state of knowledge, including background material for those unfamiliar with the region; address global hypotheses using data from Alaska; and test important global hypotheses using data from this region.

It is organized around four major themes:

  • subduction and great earthquakes at the Aleutian Arc,
  • the transition from strike slip to accretion and subduction of the Yakutat microplate,
  • the Denali fault and related structures and their role in accommodating permanent deformation of the overriding plate, and
  • regional integration and large-scale models and the use of data from Alaska to address important global questions and hypotheses.

The book's publication near the beginning of the National Science Foundation's EarthScope project makes it especially timely because Alaska is perhaps the least understood area within the EarthScope footprint, and interest in the region can be expected to rise with time as more EarthScope data become available.

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Contents

Preface
1
Paleoseismicity and Neotectonics of the Aleutian Subduction ZoneAn Overview
38
Changes in Deformation Driven by Mass Redistribution
65
FarField Deformation From the Yakutat
83
Structural Geometry and Tectonic Implications of
108
Seismicity GPS Geodesy and Local Geomorphology
109
The AlaskaAleutian Subduction Zone
135
Exhumation in the ChugachKenai Mountain Belt Above the Aleutian Subduction Zone Southern Alaska
151
Implications
257
Does a Boundary of the Wrangell Block Extend Through Southern Cook Inlet and Shelikof Strait Alaska?
287
Contemporary Fault Mechanics in Southern Alaska
321
Orogenesis From Subducting Thick Crust and Evidence From Alaska
337
Stress Map for Alaska From Earthquake Focal Mechanisms
351
Does It Have an Influence on Earthquake Occurrence in Southern Alaska?
369
Challenges in Making a Seismic Hazard Map for Alaska and the Aleutians
385
Toward a TimeDependent Probabilistic Seismic Hazard Analysis for Alaska
399

Active Faults on Northeastern Kodiak Island Alaska
167
Seismicity of the Prince William Sound Region and Its Relation to Plate Structure and
201
The Yakutat Collision Between the Subduction and Transform Boundaries
215
Small Continental Collision Zone
237
Static Coulomb Stress Transfer
417
Index
431
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