4. Which of the following rock sample contains fine texture? A. gneiss B. hornfels C. quartzite D. metaconglomerate 5. What rock is the result of the metamorphism of sandstones? A. slate B. schist C. marble D. phyllite 6. What are the main factors for contact metamorphism to occur? A. air and water B. heat and reactive fluid C. temperature and water D. pressure and temperature 7. How do you describe the grain size texture of Hornfels? A. It has fine texture B. It has coarse texture C. It has coarse to fine texture D. It has medium coarse texture 8. Which of the following rock samples is less influenced by the heat? A. phyllite B. gneiss C. schist D. slate 9. Which of the following is NOT true about metamorphism? A. Slate and gneiss are examples of foliated rock. B. Contact metamorphism creates non-foliated rocks. C. Pressure is the main factor of contact metamorphism. D. Magma will bake the surrounding rocks due to different in temperature. 10. What happens to the grain size of the minerals in rocks when the heat is increased? A. It increases B. It decreases C. It remains constant D. It degrades intermittently11. Which of the following DOESNT belong to the group? A. dolomite B. feldspar C. mica D. quartz
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4. B. hornfels
5. C. quartzite
6. B. heat and reactive fluid
7. A. It has fine texture
8. D. slate
9. C. Pressure is the main factor of contact metamorphism.
10. A. It increases
11. A. dolomite
Solución
Practical Insights:
Imagine walking through a mountain range that boasts layers and layers of different rock types exposed over millions of years. Some areas boast beautiful bands of foliated gneiss while other regions feature smooth surfaces of non-foliated marble formed through contact metamorphism near ancient magma chambers.
Consider how construction materials are chosen according to geological processes. Quartzite's hardness makes it an excellent choice for countertops and flooring due to the intense heat and pressure used to turn sandstone into this durable material.
If you're fascinated by geology or want to dive deeper into understanding the processes that shape our planet's crust, UpStudy offers an exceptional platform! Explore our live tutor question bank or utilize our AI-powered problem-solving services for comprehensive insights into geological concepts and beyond.
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Gneiss, a fascinating metamorphic rock, typically possesses a coarse to medium-grained texture and is known for its beautiful banding caused by high-grade metamorphism. This visually striking layering occurs because of the extreme pressure and temperature it experiences deep within the Earth, often resulting in a rock that tells a stunning geological story! When it comes to the metamorphism of sandstones, they transform into quartzite, a durable and tough rock that is often used in construction and decorative stonework. Quartzite boasts a fine to medium texture, is highly resistant to weathering, and has an array of stunning colors, making it a popular choice for countertops, tiles, and other architectural features!
