Respuesta :
Answer:
False
Explanation:
Lithification is defined as the summation of compaction and cementation. Finer materials undergo compaction due to the force exerted by the overlying sediment layers. Clay particles (diameter < 0.002mm) undergo more compaction because they are finest in terms of size whereas silt (diameter 0.002-0.06mm) and sand-size sediments (0.06-2mm) are relatively coarser..
So, compaction is relatively a more significant process for clay particles than the silt and sand-sized particles.
Hence the given statement is false.
Compaction is NOT the most significant process as a lithification process for sedimentary rocks composed of sand-sized particles.
Sedimentary rocks are as a result of compaction, lithification and cementation.
Further Explanation
Rock
- A rock is a naturally occurring substances that is a solid mixture of one or more minerals together with organic matter.
- Rocks are classified based on the chemical composition, texture and the way they are formed.
Sedimentary rocks
- Sedimentary rocks are types of rocks that are formed through accumulation of sediments at low temperatures in tectonic layers and sinks. The process involved include compaction and cementation of sediments.
- These sediments includes; pebbles, shells, sand and other material fragments.
- The sediments accumulates in layers and then harden into rocks over a period of time.
- Examples of sedimentary rocks include; limestone and conglomerate
Lithification, cementation and compaction
- Lithification is the process by which sediments combine to form sedimentary rocks.
- Compaction involves the consolidation of sediments due to the intense pressure and weight of the overlying deposits. Compaction takes place when sediments get buried.
- Cementation is the process through which dissolved minerals crystallize and glue grains of sediments together.
Other types of rocks
Metamorphic rocks
- These are types of rocks that are formed as a result of changes that occurs due to intense heat and pressure under the surface of the earth. They result from action of heat and pressure on other rocks that pre-existed.
- These types of rocks are characterized by shiny crystals, ribbon-like layers among other features.
- Examples of metamorphic rocks are marble and gneiss
Igneous rocks
- These are types of rocks that are formed as a result hardening and cooling of magma from volcanic eruptions. Magma may cool inside the earth or when on the surface of the earth as a result of volcanic eruptions. The lava from this eruptions cools and hardens to form metamorphic rocks.
- Igneous rocks are glass-like and shiny with no crystals. They may also have tiny spaces and holes due to gas bubbles trapped during the cooling process.
- Examples of igneous rocks include obsidian and basalt.
Key words: Rocks, lithification, cementation and compaction, sedimentary rocks, examples of sedimentary rocks, other types of rocks.
Learn more about;
- Rocks and rock types; https://brainly.com/question/1542533
- Sedimentary rocks;https://brainly.com/question/1542533
- Igneous rocks; https://brainly.com/question/1542533
- Metamorphic rocks; https://brainly.com/question/1542533
Level; High school
Subject: Geography
Topic: Rocks
sub-topic: classification of rocks
