'Regional metamorphism' diaporamas de présentation

Metamorphic Rock. Rock Cycle. Metamorphism means "changed form". Agents of Metamorphism Changes occur because of: Heat Pressure Chemical fluids *Rocks adjust to become more stable under new, higher temperatures and pressures. HEAT

Metamorphic Rocks. Metamorphic rocks have been changed from a pre-existing rock. Caused by extreme heat and/or pressure. Regional Metamorphism. Caused by extreme pressure and heat. Happens over wide “regions”. Contact Metamorphism. Caused by contact with extreme heat.

Earth Materials--Rocks and Minerals. CHAPTER 2. Minerals and Rocks. Definition of a mineral: Naturally occurring Inorganic Solid Definite chemical composition (or range) Orderly internal crystal structure . Mineral Importance. Economic Conditions of environment

Metamorphic Rocks. The Rock Cycle. If you bury a rock deep enough, it will melt (IGNEOUS) Not so deep, a rock will become lithified (SEDIMENTARY) At conditions (Pressures and Temperatures) just right, metamorphism occurs. http://voyagerstories.files.wordpress.com/2009/02/rock-cycle.jpg.

Metamorphic facies. Chapter 14 and 18. Metamorphic terranes. Geologic setting where metamorphism occurs Tracts of exposed, distinct rock from adjacent rock. Metamorphic terranes. Ocean-ridge metamorphism Seen in ophiolites Lots of metasomatism Hydration of minerals, adding Na.

Metamorphic Rocks. Mr. Ahearn Earth Science 2010. What are Metamorphic Rocks?. Form at conditions between those that produce igneous and sedimentary rocks Most found under thousands of meters sed. rx. Conditions Promoting Metamorphism. Heat Pressure Circulating Fluids.

Rocks. Sedimentary, Igneous, and Metamorphic. 3 Types of Sedimentary Rocks. Clastic Chemical Organic. Clastic Sedimentary Rock. Sediments form when rocks are weathered and eroded Sediments are moved by wind, glaciers and water Most clastic sediments are deposited in the ocean.

Metamorphic Rocks. Change is Good. Metamorphic Rocks. Formed from intense heat and pressure!. Sources of Heat. 300-1400 degree Celsius temperatures are needed for Metamorphism. Sources of heat include: Magma or lava Friction from faulting. Sources of Pressure.

Sedimentary and Metamorphic Rocks. Sedimentary Rocks. Made from sediment / organic matter Rock goes through weathering and erosion, and is broken down into tiny fragments, some of which may be chemically altered Sediment Sediment is compacted and cemented

METAMORPHIC ROCKS. What is a metamorphic rock? Metamorphic rocks form after another rock is subjected to extreme heat and/or pressure and that changes its physical characteristics. Metamorphic Rocks Appear Similar to Their Parent Rocks

I. FORMATION OF METAMORPHIC ROCKS:. A metamorphic rock is one whose original form has been __________. changed. BY________ AND _____________. HEAT. PRESSURE. THIS ALTERATION IS CALLED _____________ . RE -CRYSTALLIZATION. These changes are NOT caused by . MELTING.

1 December 2011. OBJECTIVE: Describe the difference between foliated and nonfoliated metamorphic rock. INTRO. Check and Hand-in Missing Assignments Write Q&A in notebook: What are some things you know of that can morph (change)?. Metamorphic Rock. Metamorphic Rocks. Metamorphic rocks.

Rocks. Rocks are defined as a mixture of one or more minerals and organic matter There are three types of rocks: Igneous Sedimentary Metamorphic. Igneous Rocks. Form when magma cools Found near volcanic activity

A Rock Group in action…. Metamorphic Rocks. Classified according to the arrangement of the grains that make up the rocks & the minerals in them. Metamorphic rocks are nicknamed “Changing Rocks”. Why?. They are made from other rocks…. How do Metamorphic rocks form?.

Short circuits. Metamorphic Rocks. form beneath the Earth’s surface heat, pressure and/or fluids on pre-existing rocks exhumed by uplift and erosion Don’t Create / change metamorphism can be: regional fault-related (beside seismic zones) contact (adjacent to igneous rocks).

Three Metamorphic agents cause rocks to change;. During metamorphism, rocks are often subjected to all three agents at the same time. Agents of Metamorphism. 1) increased heat. 2) increased pressure. 3) chemically active fluids. Reference: Pages 193 - 196.

Non-volcanic CO 2 Degassing from the Solid Earth Kerrick, D.M. (2001) Rev. Geophys ., 39 , 565-585. Volcanic Non-volcanic CO 2 emitted from crater everything else or flank of volcano some/most CO 2 emitted includes CO 2 emission

Warm Up 10/8. What type of sedimentary rock is formed from weathered particles of rocks and minerals? a. intrusive sedimentary rock b. chemical sedimentary rock c. clastic sedimentary rock d. biochemical sedimentary rock

Metamorphic Rocks. Mt Shuksan and Mt Baker, J Scurlock. Mt Shuksan N Face, J Scurlock. The Rock Cycle. If you bury a rock deep enough, it will melt (IGNEOUS) Not so deep, a rock will become lithified (SEDIMENTARY) At conditions (Pressures and Temperatures) just right, metamorphism occurs.

Geology 12. Presents. Metamorphic Rocks. Chp 7 Metamorphic Rocks. Process by which heat, pressure and fluids change pre-existing rock in the solid state. Change. Shape.