- •Read and translate the following word combinations.
- •Read the text.
- •Comprehension check.
- •Word- building.
- •Lexical exercises.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word- building.
- •6. Summary.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •6. Summary.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Read and translate the following word combinations.
- •6 .Lexical exercises.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Lexical exercises.
- •5. Summary.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercise.
- •6. Summary.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •Igneous rocks: the origins of magma
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •1. Read and translate the following word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •6. Summary.
- •1. Read and translate the following words and word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •1. Read and translate the following words and word combinations.
- •2. Read the text.
- •3. Comprehension check.
- •4. Word-building.
- •5. Lexical exercises.
- •6. Summary.
6. Summary.
Metamorphism is the process by which solid rocks and minerals change in response to changing environmental conditions.
Most metamorphic reactions occur because each mineral is stable only within a certain range of temperature, pressure, and chemical environment.
Both the texture and the minerals can change as a rock is metamorphosed.
Contact metamorphism occurs when an igneous intrusion heats nearby country rock. Burial metamorphism results from increasing temperature and pressure caused by burial or rocks, commonly within a sinking sedimentary basin. Both types of metamorphism produce nonfoliated metamorphic rocks. Regional metamorphism forms foliated rocks. Hydrothermal metamorphism occurs when hot, migrating fluids change the chemical composition of country rock.