Types of Rocks
Rock Classification and Formation Processes
S6E5. Obtain, evaluate, and communicate information to show how Earth’s surface is formed
c. Construct an explanation of how to classify rocks by their formation and how rocks change through geologic processes in the rock cycle.
Key Vocabulary Words
S6E5. Obtain, evaluate, and communicate information to show how Earth’s surface is formed
c. Construct an explanation of how to classify rocks by their formation and how rocks change through geologic processes in the rock cycle.
Key Vocabulary Words
composition
paleontology felsic texture mafic igneous rock conglomerate magma/lava clastic physiographic regions of Georgia extrusive granite basalt |
sediments
compaction nonfoliated cementation weathering erosion deposition metamorphic rock foliated fossil rock cycle heat and pressure |
chemical sedimentary
Appalachian Plateau fine-grained extinct Valley & Ridge (of GA) intrusive Blue Ridge (of GA) coarse-grained organic sedimentary Piedmont (of GA) sedimentary rock uplift (force) Coastal Plain |
- What 3 things are used to classify/identify a rock?
- Review: Minerals (element or compound) make up rocks (mixtures of minerals—sometimes organic matter).
- 3 types of rocks and HOW they form—processes (metamorphic rocks from pressure and/or heat so the crystals get bigger and get rearranged)
- Know the subcategories of the 3 types of rocks and how each forms (ex: Extrusive igneous rocks, like basalt, form from cooling lava)
- How does the crystal size relates to the speed of cooling? (fine and coarse-grained)
- Relate rock –granite and basalt—to earth’s processes, composition, and history
- Fossils are mainly found in ______________ rock (why?).
- Know that older fossils are found in the deeper rocks
- AC: Plants, animals, soil types, elevation, etc of the physiographic regions of Georgia (be able to compare/contrast