Memoirs of National Institute of Polar Research

Evolution of the Namaqua, Natal and Maud Metamorphic Belts: Japan-South Africa Joint Research

CONTENTS

Preface ...................................Kazuyuki Shiraishi ........................................ i

Geochemical characteristics and tectonic setting of metamorphosed rocks in the Tugela terrane, Natal belt, South Africa

Makoto Arima, Keiji Tani, Shinichi Kawate and S. T. Johnston ........................................ 1

Preliminary U-Pb geochronology of the Tugela terrane, Natal belt, eastern South Africa

Stephen T. Johnston, Richard Armstrong, Larry Heaman, Steve McCourt, Andrew Mitchell, Avi Bisnath and Makoto Arima
........................................ 40

The nature of the Grenville-age charnockitic A-type magmatism from the Natal, Namaqua and Maud Belts of southern Africa and western Dronning Maud Land, Antarctica

G.H. Grantham, B.M. Eglington, R.J. Thomas and P. Mendonidis ........................................ 59

New evidence for prograde metamorphism and partial melting of Mg-Al-rich granulites from western Namaqualand, South Africa

Yoshikuni Hiroi, Tomokazu Hokada, Masaaki Beppu, Yoichi Motoyoshi, Toshiaki Shimura, Masaki Yuhara, Kazuyuki Shiraishi, Geoffrey H. Grantham and Mike W. Knoper ........................................ 87

Petrography and mineral chemistry of high-grade pelitic gneisses and related rocks from Namaqualand, South Africa

Tomokazu Hokada, Yoichi Motoyoshi, Yoshikuni Hiroi, Toshiaki Shimura, Masaki Yuhara, Kazuyuki Shiraishi, Geoffrey H. Grantham and Mike W. Knoper ........................................ 105

Rb-Sr and Sm-Nd systematics of granitic and metamorphic rocks in the Namaqualand metamorphic complex, South Africa:

Implications for evolution of marginal part of Kaapvaal craton

Masaki Yuhara, Hiroo Kagami and Noriyoshi Tsuchiya ........................................ 127

Note on the mineral texture and chemistry of the eastern Bushveld Complex

Sotaro Baba, Tomokazu Hokada, Tetsu Saitoh, Yoshikuni Hiroi, Kazuyuki Shiraishi, Makoto Arima and Robin E. Harmer
........................................ 145

Two-dimensional measurement of natural radioactivity of some Archean and Proterozoic rocks from South Africa

Noriyoshi Tsuchiya and Mihoko Hareyama ........................................ 167

Author index ............................................................................ 178