It has already been noted that the earth, at its beginning was in a gaseous state. Lecture 1 . - 25108 (Note: Most igneous processes are driven by Plate Tectonics. Study of igneous petrology is a basic necessity to geological sciences. Procedures used during Leg 176 for describing igneous rocks in general follow the outline presented in the "Explanatory Notes" chapter of Leg 153 (Shipboard Scientific Party, 1995), and much of the discussion presented here comes from that source. Note that the lithosphere is comprised of both crust and part of the upper mantle. Lecture notes . Textural terms . Feel free to use the past paper as you prepare for your upcoming examinations. Igneous Rock Igneous rocks are the primary rocks, which are formed due to cooling and solidification of magma. Lecture 2: Classification and nomenclature of igneous rocks (Prof. P.F. coarse-grained 5-50 mm . Earth’s internal structure. The plates that we talk about in plate tectonics are made up of the lithosphere, and appear to … Hand specimen and thin section description of igneous rocks. IGNEOUS PETROLOGY General Procedures . Field Trip 1. Magma comes out from the greater depth below the earth surface, such magma is called LAVA. Find University Of Eldoret Ees 301:Igneous Petrology previous year question paper. Igneous Rocks: A change of temperature caused the formation of igneous rocks. IGNEOUS PETROLOGY WEEK 1: INTRODUCTION AND CLASSIFICATION INTRODUCTION Igneous rocks – form by the solidification of magma or “molten rock”. Mineral modes. medium-grained 1-5 mm . equigranular . Introduction to Metamorphism Read Chapter 1 of An Introduction to Metamorphic Petrology by Bruce Yardley or Chapters 22-23 of Igneous and Metamorphic Petrology by John Winter or Chapter 16 of Igneous and Metamorphic Petrology by Philpotts. Haldar, Josip Tišljar, in Introduction to Mineralogy and Petrology, 2014. Classification and nomenclature of igneous rocks . Thermodynamics Notes. 2 • Why is the Earth hot inside? The loss of heat through radiation and gradual cooling led to solidification and hardening of the upper portion. Eng- Geo [6K473]-Unit1 6 7. Peninsular Ranges Batholith, San Diego County, April 29-30. Magma is a hot viscous, siliceous melt, containing water vapour and gases. Petrology JEO342E . 1. aphanitic . S.K. Part 2. to separate the topics (see the textbook). We will return on Sunday afternoon (5 PM) It is hard (no, impossible!) Abstract. phaneritic . What is Metamorphism and Why Study It? To understand igneous petrology, this course will review some general characteristics of magmas and how they solidify to form unlimited types of igneous rocks. Thus igneous rocks came to be formed in the past. McDermott) The basic terminology of igneous petrology. pyroclastic . Please arrive by 5:45 AM at the loading dock on Saturday!!! 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