Contents

Abstract

I.Introduction

1-1

I.1 General Introduction

1-1

I.2.Anisotropy of magnetic susceptibility

1-2

II.Geological setting and method

2-1

II.1 Geological setting of the sequences of Boso and Miura Peninsulas

2-1

II.2.Method

2-4

III.Magnetic fabric analysis

3-1

III.1.the bulk susceptibility

3-1

III.2.AMS Result of Miura Group

3-1

III.3.AMS Result of post-Miura Group

3-9

III.4.Nankai Trough

3-10

III.5.Magnetic fabric and strain

3-13

IV.Paleomagnetic analysis

4-1

IV.1.Remanent magnetization analysis

4-1

IV.2.Summary of the paleomagnetic data

4-2

V.Discussion

5-1

V.1.the developing of magnetic fabric

5-1

V.2.Geodynamic implication

5-3

VI.CONCLUDING REMARKS

6-1

Reference

Figures

Tables

Appendix