Petrology Geochmistry And Rb-Sr Geochronology Of Metamorphosed Rock Of Uwet Area Southeastern Nigeria

ABSTRACT 0 0 0 0 0 0 0 0 0 ooooo

ACKNOWLEDGENEIJTS .......... CONTENTS ooooooooooooooo

I~ISTOFFI~IRES ooo.. 0.0..

LIST OF TABLES oooooooooo

CHAPTER ONE

INTRODUCTION ooo.oooooo

b

1 :l Geologica,l setting

1 :2 Na.ture of study

CHAPTER TWO

GENERAL GXOLOGY 0 oo 00 0 00 0 0

Phyllites .....

Schista .....

Amphibolites ..... Gneisses .....

Migmatitea .....

Dolerites .....

Gra.ni to id rocks

Sedimentaxy rocks

i ii

v

vii

ix

xii

CONTENTS (CONTD . )

viii

CHAPTER !THREE

MINERALOGY AND PETROGRAPHY .**.*.....

3: 1 Metamorphic rocks .......... 322 Intrusive rocks ..........

CHAPTER FOUR

STRUCTURAL GEOLOGY ............*..

b t 1 Foliations ............... 4:2 Folds .................... 423 Joints and Faults .......... 4:4 Microstructures .......... 4:s Deformation and Methorphic Episodes

CHAPTER FIVE

CHEMICAL COMPOSITION ..... ...e......

5: 1 Analytical Method .......... 5: 2 Geochemistry ............... 5: 3 Pe trogenesis ............... CHAPTER SIX

GEOCHRONOLOGY e...................

6 : 1 Analytical Method .......... 622 Results ............... 6:3 Interpretation of Results ..... CHAPTER SEVEN

IaTAMORPHISM .................... 149

7:l Metamorphic Type .......... 149

7:2 Isograds and Zones .......... 152

7:3 Temperature . Pressure conditions of

Me tamorphism ............... 157

CHAPTEX EIGHT

SUMMARY AND CONCLUSIONS ............... 159