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