Memoirs of National Institute of Polar Research

MOTOYOSHI, Y. and SHIRAISHI, K. ed. : Origin and Evolution of Continents. Proceedings of the International Symposium "Origin and Evolution of Continents", 13-14 Octorber 1997, Tokyo. December 1998.

CONTENTS

Foreword.............................Yoichi MOTOYOSHI and Kazuyuki SHIRAISHI... i

Episodic growth of juvenile crust and catastrophic events in the mantle

Kent C. CONDIE.......................................................................... 1

Tectonic development of early Precambrian orogens

Brian F. WINDLEY....................................................................... 8

Preservation and retrogression of ultra high pressure (UHP) rocks: case studies of UHP metagranitoids in Western Alps and Su-Lu region

Takao HIRAJIMA.........................................................................29

An appraisal of peak temperatures and thermal histories in ultrahigh-temperature (UHT) crustal metamorphism: the significance of aluminous orthopyroxene

Simon L. HARLEY.......................................................................49

Boron and beryllium minerals in granulite-facies pegmatites and implications of beryllium pegmatites for the origin and evolution of the Archean Napier Complex of East Antarctica

Edward S. GREW......................................................................74

Ultra-high temperature metamorphism in the Lewisian Complex, South Harris, NW Scotland

Sotaro BABA .........................................................................93

Genesis of the migmatites of Breidv携nipa, East Antarctica

Toshiaki SHIMURA, Geoffrey L. FRASER, Noriyoshi TSUCHIYA and Hiroo KAGAMI ............................................................................109

Thermal structure of the crust during granulite metamorphism: petrological speculations and geodynamic implications

Michael V. MINTS and Alexander N. KONILOV ................................137

Compositional zoning and its implication in a toroidal circulation inside the Yakushima Pluton, SW Japan

Ryo ANMA, Yoshinobu KAWANO and Masaki YUHARA ....................157

Metamorphic zonation and formation granulite in the Shizunai area, the Hidaka Metamorphic Belt, Hokkaido, Japan

Tadashi USUKI and Teruo WATANABE .......................................177

Rock velocities at atmospheric pressure and room temperature in Tanzawa plutonic rocks from central Japan

Keigo KITAMURA and Masahiro ISHIKAWA ...................................192

A crustal model and its tectonic implication on the evolution of the Pacific margin of the northern Antarctic Peninsula

Young Keun JIN and Yeadong KIM...................................................203

A tight fit-Early Mesozoic Gondwana, a plate reconstruction perspective

Lawrence A. LAWVER, Lisa M. GAHAGAN and Ian DALZIEL.................214

Author index ....................................................................................230