According to The Geological Society, compaction occurs when sediments are buried underneath other layers causing them to stick together due to pressure. On the other hand, cementation occurs when new minerals act as binding agents that bind the sediments together. The main difference between the two processes is that compaction brings the sediments together, and cementation binds the sediment grains together.Know More
Compaction and cementation are prominent processes in lithification, the process of turning new, sandy sediment into hard rock formations. Lithification works to remove the air and water in the open spaces of loose, new sediment. As the process begins, both compaction and cementation work to reduce the porous space in sediment and bind the sediments together.
Compaction forces the sediments together to eliminate the open spaces within each sediment. As the sediment grains come into contact with one another, they become buried further down due to the overlying pressure.
During this process, the open pores not reduced by compaction are filled during cementation. Cementation fills the open pores with various minerals such as calcite, clay, silica and iron oxides. These minerals bind the grains together to form solid rock formations.
Not all of the pores need to be filled within these first stages of lithification because the rock can still be changed over time. Lithification is completed during the diagenesis stage.Learn more about Geology
According to National Geographic, the main difference between rocks and stones, or gemstones, are their rarity and crystal formation. Most gemstones have a crystal formation, which makes them rare and valuable after they are cut. Rocks usually do not have a crystal formation, which means they are not considered to be of value. Unlike rocks, gemstones are classified on their rarity and value into two categories: semiprecious and precious.Full Answer >
A tributary and a distributary are both bodies of freshwater that eventually meet with or diverge from rivers, but they differ in the direction that they flow. A tributary is a stream that flows into a larger river. A distributary is a stream or small river that splits off from a larger river and flows in a different direction.Full Answer >
The basic difference between coal and coke is that coal is the natural source and coke is the derivative product produced by destructive distillation. Both are used as fuel, but coke contains a higher carbon content and few impurities. Coke is also used during iron ore smelting as a reducing agent.Full Answer >
Granite is an intrusive rock with few contaminants, while basalt is an extrusive rock with many contaminants. Granite is the principal component of the continental crust, while basalt is the principal component of the oceanic crust.Full Answer >