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Volcanism and Subduction: The Kamchatka Region



Volcanism and Subduction: The Kamchatka Region

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Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 172

.The Kamchatka Peninsula and contiguous North Pacific Rim is among the most active regions in the world. Kamchatka itself contains 29 active volcanoes, 4 now in a state of semi-continuous eruption, and I has experienced 14 magnitude 7 or greater earthquakes since accurate recording began in 1962. At its heart is the uniquely acute subduction cusp where the Kamchatka and Aleutian Arcs and Emperor Seamount Chain meet.

Volcanism and Subduction covers coupled magmatism and tectonics in this spectacular region, where the torn North Pacific slab dives into hot mantle. Senior Russian and American authors grapple with the dynamics of the cusp with perspectives from the west and east of it, respectively, while careful tephrostratigraphy yields a remarkably precise record of behavior of storied volcanoes such as Kliuchevskoi and Shiveluch. Towards the south, Japanese researchers elucidate subduction earthquake processes with unprecedented geodetic resolution. Looking eastward, new insights on caldera formation, monitoring, and magma ascent are presented for the Aleutians.

This is one of the first books of its kind printed in the English language. Students and scientists beginning research in the region will find in this book a useful context and introduction to the region's scientific leaders. Others who wish to apply lessons learned in the North Pacific to their areas of interest will find the volume a valuable reference.

John Eichelberger, Evgenii Gordeev, Pavel Izbekov, Minoru Kasahara, and Jonathan Lees vii

Introduction: Subduction’s Sharpest Arrow
John C. Eichelberger 1

Section I: Tectonics and Subduction Zone Structure

A. Overview

Viewing the Tectonic Evolution of the Kamchatka-Aleutian (KAT) Connection With an Alaska Crustal Extrusion Perspective
David W. Scholl 3

Evolution of the Kurile-Kamchatkan Volcanic Arcs and Dynamics of the Kamchatka-Aleutian Junction
G.P. Avdeiko, D.P. Savelyev, A.A. Palueva, and S.V. Popruzhenko 37

The Origin of the Modern Kamchatka Subduction Zone
Alexander V. Lander and Mikhail N. Shapiro 57

B. Topical Studies

Three Dimensional Images of the Kamchatka-Pacific Plate Cusp
Jonathan M. Lees, John VanDecar, Evgenii Gordeev, Alexei Ozerov, Mark Brandon, Jeff Park, and Vadim Levin 65

Thermal Models Beneath Kamchatka and the Pacific Plate Rejuvenation From a Mantle Plume Impact
V. C. Manea and M. Manea 77

Magnetic and Seismic Constraints on the Crustal Thermal Structure Beneath the Kamchatka Peninsula
Akiko Tanaka 91

Correlation of Kamchatka Lithosphere Velocity Anomalies With Subduction Processes
Irina Nizkous, Edi Kissling, Irina Sanina, Larissa Gontovaya, and Valeria Levina 97

Active Faulting in the Kamchatsky Peninsula, Kamchatka-Aleutian Junction
Andrey Kozhurin 107

High Seismic Attenuation in the Reflective Layers of the Philippine Sea Subduction Zone, Japan
Anatoly Petukhin and Takao Kagawa 117

Section II: Earthquakes

A. Overview

Seismicity, Earthquakes and Structure Along the Alaska-Aleutian and Kamchatka-Kurile Subduction Zones: A Review
Natalia A. Ruppert, Jonathan M. Lees, and Natalia P. Kozyreva 129

B. Topical Studies

Recurrence of Recent Large Earthquakes Along the Southernmost Kurile-Kamchatka Subduction Zone
Yuichiro Tanioka, Kenji Satake, and Kenji Hirata 145

Spatial Relationship Between Interseismic Seismicity, Coseismic Asperities and Aftershock Activity in the Southwestern Kuril Islands
Hiroaki Takahashi and Minoru Kasahara 153

Section III: Volcanism

A. Overview

Late Pleistocene-Holocene Volcanism on the Kamchatka Peninsula, Northwest Pacific Region
Vera Ponomareva, Tatiana Churikova, Ivan Melekestsev, Olga Braitseva, Maria Pevzner and Leopold Sulerzhitsky 165

B. Topical Studies

Geochemistry of Primitive Lavas of the Central Kamchatka Depression: Magma Generation at the Edge of the Pacific Plate
Maxim Portnyagin, Ilya Bindeman, Kaj Hoernle, and Folkmar Hauff 199

An Estimation of Magmatic System Parameters From Eruptive Activity Dynamics
Yurii Slezin 241

Diverse Deformation Patterns of Aleutian Volcanoes From Satellite Interferometric Synthetic Aperture Radar (InSAR)
Zhong Lu, Daniel Dzurisin, Charles Wicks, Jr., John Power, Ohig Kwoun, and Russell Rykhus 249

Holocene Eruptive History of Shiveluch Volcano, Kamchatka Peninsula, Russia
Vera Ponomareva, Philip Kyle, Maria Pevzner, Leopold Sulerzhitsky, and Melanie Hartman 263

Periodicities in the Dynamics of Eruptions of Klyuchevskoi Volcano, Kamchatka
A. Yu. Ozerov, P. P. Firstov, and V. A. Gavrilov 283

Tomographic Images of Klyuchevskoy Volcano P-Wave Velocity
Jonathan M. Lees, Neill Symons, Olga Chubarova,Valentina Gorelchik, and Alexei Ozerov 293

Minor- and Trace Element Zoning in Plagioclase From Kizimen Volcano, Kamchatka: Insights on the Magma Chamber Processes
Tatiana Churikova, Gerhard Wörner, John Eichelberger, and Boris Ivanov 303

Dynamics of the 1800 14C yr BP Caldera-Forming Eruption of Ksudach Volcano, Kamchatka, Russia
Benjamin J. Andrews, James E. Gardner, Steve Tait, Vera Ponomareva, and Ivan V. Melekestsev 325

Late Pleistocene and Holocene Caldera-Forming Eruptions of Okmok Caldera, Aleutian Islands, Alaska
Jessica F. Larsen, Christina Neal, Janet Schaefer, Jim Beget, and Chris Nye 343

Preliminary Study on Magnetic Structure and Geothermal Activity of Tyatya Volcano, Southwestern Kuril Islands
Noritoshi Okazaki, Hiroaki Takahashi, Kenji Nogami, Hiromitsu Oshima, Hiromu Okada, and Minoru Kasahara 365