Soil assignment 1 - 1 Task 1(a(LO 1 1.1 Igneous rock Igneous rock can be formed from the cooling of molten rock which is solidified to the magma or lava

Soil assignment 1 - 1 Task 1(a(LO 1 1.1 Igneous rock...

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1 Task 1(a) : (LO 1: 1.1) Igneous rock Igneous rock can be formed from the cooling of molten rock which is solidified to the magma or lava. The magma lies below the ground surface. Lava can be found on the ground surface in the volcano. There are 3 types of igneous rocks. They are extrusive or volcanic rock (diorite, gabbro, granite) which has small crystals, hypabyssal rock and plutonic rock or intrusive rock which has large crystals. They can be classified by their texture and mineral composition. They also have high strength because of massive rocks. Characteristics of igneous rocks - They are crystalline from rocks - They are non-stratified - They are hard and impervious - They don’t contain fossils - They can resist erosion Igneous rocks
2 Sedimentary rock Sedimentary rocks are the transformation of existing rock types which can be formed by the deposition and subsequent of earth surface. It can also be formed by the heat and pressure. This rocks are the combination of tiny sediments. Before the deposition, the sediments were formed by the weathering and erosion from the source area which are transported to the place of deposition by water, wind, ice and so on. Sedimentation can also be formed as mineral participate from water solution or shells of aquatic creatures settle out of suspension. Characteristics of sedimentary rock - They are layering rocks - From their basic original, they can be divided into clastic sedimentary rocks - They can be extremely diverse - Each type has its own variation in strength and behavior kinds of sedimentary rocks
3 Metamorphic rock In the word of “metamorphic” means “change in forms”. Metamorphic rocks are from the transformation of existing rock types. The basic types of metamorphic rocks are slaty, schistose, gneissose, granoblastic and hornfeisic. Metamorphic rocks are formed by cementation, crystallization of water and compaction. In metamorphic rocks, lots of changes are occurred in texture and mineral composition due to the difference of extreme pressure and heat. And also the strength and behavior are changed. Characteristics of metamorphic rock - they are formed in large or strata - they are hard or soft - they are not crystalline forms - they contain fossils - they also have different colours and textures Metamorphic rocks
4 Task 1(b) (LO 1: 1.2) Metamorphic rock is the transformation of existing rock types and in texture, structure and mineral changes. Formation of Metamorphic rock When metamorphic rock is forming, the surrounding of temperature and pressure can be recorded how much they are affected. The rocks provide clues their transformation into a metamorphic rock. Before the transformation of metamorphic, the rocks may be sedimentary or igneous or other types of rocks. They are physically deformed and chemically changed due to extreme temperature and pressure. The elements in this rocks are changed to form new minerals. And the rock will be different after the metamorphism has occurred.

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