Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin
Accretionary prisms in convergent margins are natural laboratories for exploring initial orogenic processes and mountain building episodes. They are also an important component of continental growth both vertically and laterally. Accretionary prisms
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Modern Approaches in Solid Earth Sciences VOLUME 8 Series Editors
Y. Dilek, Department of Geology, Miami University, Oxford, OH, U.S.A. M.J.R. Wortel, Faculty of Geosciences, Utrecht University, The Netherlands
For other titles published in this series, go to www.springer.com/series/7377
Yujiro Ogawa • Ryo Anma • Yildirim Dilek Editors
Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin
Editors Yujiro Ogawa Century Tsukuba-Miraidaira C-740 Obari, Yokodai 1-127-2 300-2358 Tsukubamirai-shi Japan [email protected] Yildirim Dilek Department of Geology Miami University Shideler Hall 114 45056 Oxford Ohio USA [email protected]
Ryo Anma Graduate School of Life & Environmental Sciences University of Tsukuba Ten-nodai 1-1-1 305-8572 Tsukuba, Ibaraki Japan [email protected]
Responsible series editor: Y. Dilek
ISSN 1876-1682 e-ISSN 1876-1690 ISBN 978-90-481-8884-0 e-ISBN 978-90-481-8885-7 DOI 10.1007/978-90-481-8885-7 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2011929049 © Springer Science+Business Media B.V. 2011 No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Credit cover figure: bubaone/istockphoto.com Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
The Japanese Islands lie on the Northwestern Pacific rim and have been repeatedly struck by subduction-related earthquakes and associated tsunamis. Until the early 1980s, studies of interplate earthquakes and tsunamigenic processes relied on seismic remote-sensing techniques to attempt to understand the seismogenic processes that take place deep beneath the ocean floor. The challenge of understanding seafloor geological processes associated with subsea earthquakes and tsunamis was addressed when the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) commissioned deep-sea manned submersibles Shinkai 2000 (1982–2002) and Shinkai 6500 (1990–) and various remotely operated vehicles (ROVs). Manned submersibles and ROVs have been valuable tools for investigating abyssal topography, seafloor profiles across intra-oceanic arcs, and geological processes at convergent plate boundaries. Since the 1980s, long-range missions by submersibles have focused on areas in and around deep oceanic trenches near Japan. The French– Japanese KAIKO project was an early milestone that achieved magnificent results, including unraveling the structure of accretionary prisms, mapping the distributions of cold seeps and chemosynthetic bio-communities, and providing detailed geophysical, geological, and topographic data. The project resulted in publication of papers in Tectonophysics
