Course Material for Geophysics I

Abstract

This material targets students offering B.Sc. Physics in the National Open University of Nigeria (NOUN). It introduces students to Geophysics as a specialized field of study in which interested undergraduate students may pick interest as a specialization in their future careers. It discusses applications of physics principles to the study of the solid interior part of the earth. Editor: B. S. Badmus, Department of Physics, College of Natural Sciences, University of Agriculture, Abeokuta, Ogun State, Nigeria GENERAL TABLE OF CONTENTS FOR THE MODULES Module 1 EARTH: INTERNAL STRUCTURE AND CONSTITUTION, DENSITIES: ROCKS AND ORES. Unit 1 Origin of the Earth Unit 2 Motions of the Earth Unit 3 The Internal and External Structures of the Earth. Unit 4 Variation of Some Physical Properties within the Solid Earth. Unit 5 Rocks and Minerals Unit 6 Density Module 2 GEOMAGNETISM: ORIGIN, PROPERTIES OF ROCK Unit 1 Basic Facts in Magnetism Unit 2 Nature of Geomagnetic Field Unit 3 Characteristics of Magnetism in Rocks’ Components Unit 4 Magnetisation in Earth’s Rocks Unit 5 Magnetic Measurement Module 3 GRAVITY METHODS Unit 1 Newton’s Gravitation and Application Unit 2 Gravity Instrument Unit 1 Gravity Fieldwork Unit 4 Gravity Data Processing Unit 5 Gravity Data Interpretations. Module 4 MAGNETIC METHODS Unit1 Theory, Concept, and Instruments Unit 2 Magnetic Survey Unit 3 Magnetic Data Processing Unit 4 Qualitative Interpretation of Magnetic Data Unit 5 Quantitative Interpretation of Magnetic Data