* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download controls (practical/laboratory) work, abstract
Survey
Document related concepts
Paleontology wikipedia , lookup
Air well (condenser) wikipedia , lookup
History of geology wikipedia , lookup
Evolutionary history of life wikipedia , lookup
Large igneous province wikipedia , lookup
Age of the Earth wikipedia , lookup
Marine geology of the Cape Peninsula and False Bay wikipedia , lookup
Provenance (geology) wikipedia , lookup
Tectonic–climatic interaction wikipedia , lookup
Composition of Mars wikipedia , lookup
Geochemistry wikipedia , lookup
Transcript
9.2 Activities Activity 1. Match the terms with their definitions 1.metamorphic 2.metamorphism 3.water 4.rock 5.schist A- is an alteration of the composition or structure of a rock by heat, pressure, or other natural agency B- denoting or relating to rock that has undergone transformation by heat, pressure, or other natural agencies, e.g. in the folding of strata or the nearby intrusion of igneous rocks C-is the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans D-is a coarse-grained metamorphic rock which consists of layers of different minerals and can be split into thin irregular plates E- is a colourless, transparent, odourless, liquid which forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms Activity 2. Mark the sentences “True” or “False” () True False 1. The role of water in metamorphism is not determined. 2. Slate, phyllite, schist and gneiss belong to the group of foliated metamorphic rocks. 3. Marble and quartzite are foliated metamorphic rocks. 4. Metamorphic rocks represent the earliest portion of the Earth’s crust. 5. Gneiss, mica, schists, phyllites, marbles, slate, quartz, etc. belong to the same group of rocks. Activity 3. Match the beginnings of sentences to their endings 1.Metamorphic rock shows that A- by the action of heat and pressure. 2. Being subjected to pressure, heat and chemically active fluids beneath the Earth’s surface, various rocks in the Earth’s crust 3. metamorphic rocks have been developed from earlier igneous and sedimentary rocks 4. The role of water in metamorphism is determined by at least four variable geologically related parameters: 5. During a metamorphism normal B- rock pressure, temperature, water pressure and the amount of water. C- the original rock has been changed from its primary form to a new one D- undergo changes in texture, in mineral composition and structure and are transformed into metamorphic rocks. The process described is called metamorphism. progressive E- rock pressure and temperature are interdependent. Activity 4. Answer the following questions 1. What does the word ‘metamorphic’ mean? 2. What does it show? 3. What is metamorphism? 4. What metamorphic rocks have been developed from? 5. Can you name the chief parts of gneisses? 6. Some minerals have a schistose structure. What does it mean? 7. How is the role of water in metamorphism determined? 8. How are the low-grade metamorphic rocks characterized? 9. How are the medium-grade rocks characterized? 10.What minerals cause the rock to split into thin sheets? 11.Can you name foliated and non-foliated metamorphic rocks? 12.Why is it important to know the structure of metamorphic rocks? Activity 5. Describe the process of metamorphism: a) What is metamorphism? Speak about metamorphic rocks b) Describe the role of water in metamorphism