Metamorphic Rocks TestWhat you should know

1. Understand that metamorphic grade is affected by temperature and pressure

2. Name common rocks ranging from low grade to high grade as:a. Slateb. Shalec. Phyllited. Schiste. Gneiss

3. State that increasing temperature and pressure affects minerals in metamorphic rocks and be able to name examples

4. Know that the three R’s in metamorphism are recrystallization, reorientation and regrowth of minerals

5. State that the types of Metamorphism are:a. Regionalb. Contactc. Dynamicd. Metasomatic is the (chemical alteration of a rock by

hydrothermal and other fluids)

6. Discuss how the presence of certain minerals in a Metamorphic rock tell you the temperature and the pressure it was formed at

7. State that the term protolith is another term for parent rock

8. Name and describe the different modes of metamorphism as:

a. Regional

b. Contact

c. Dynamic / Cataclastic

d. Hydrothermali. Often associated with mid-ocean ridgesii. Seawater heated by upwelling magma promotes

chemical reactions with basalt causing alterationiii. Alteration is also common in other igneous rocks such as

granite.iv. Alteration can result in the rock becoming weaker, more

compressible and more permeable – the end product is very similar to that produced by chemical weathering

e. Buriali. Diagenisis grades into burial metamorphismii. Low grade metamorphisms resulting from heat and

pressure exerted by overlying sediments and sedimentary rocks

iii. Bedding and other sedimentary structures are preservediv. Burial metamorphism can grade into regional

metamorphism

9. Understand how to classify metamorphic rocks based on their mineral content, grain size, degree of banding and metamorphic grade

10.Describe the process of gold formation using hydrothermal processes

11.Be able to draw labeled diagrams to illustrate your answers

12.Name and describe common metamorphic rocks that are used as a natural resource in modern society. You should also be able to describe how this rock is formed using key terminology.

13. Name and describe common minerals associated with different grades of metamorphic rocks. You should be able to describe their alignment due to the nature of its formation

14.State that metamorphic rocks can be broadly classified as foliated and non-foliated

a. Describe the mineral content, grain size and give common examples of both classifications of metamorphic rock