Determine which characteristics produce metamorphic rock vs sedimentary: 1. Heat and pressure 2. Weathering and erosion. 3. Igenous rocks under heat and pressure. 4. Compaction and sedimentation.
1. Heat and pressure: Metamorphic rocks are formed from pre-existing rocks that have been subjected to high temperatures and pressure. These conditions cause the minerals within the rock to recrystallize and form new minerals, resulting in the formation of metamorphic rock.
2. Weathering and erosion: Sedimentary rocks are formed from the deposition, compaction, and cementation of sediments that have been weathered and eroded from pre-existing rocks. Over time, these sediments accumulate and are compressed, leading to the formation of sedimentary rock.
3. Igneous rocks under heat and pressure: Igneous rocks are formed from the solidification of molten rock material (magma or lava). While heat and pressure can affect the characteristics and texture of igneous rocks, they do not directly lead to the formation of metamorphic rock.
4. Compaction and sedimentation: These processes are characteristic of the formation of sedimentary rocks. As sediments accumulate, they become compacted under the weight of overlying layers, and minerals within the sediments act as cement to bind the particles together. This compaction and cementation process results in the formation of sedimentary rock.