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1Task 1(a): (LO 1: 1.1)Igneous rockIgneous rock can be formed from the cooling of molten rock which is solidified to themagma or lava. The magma lies below the ground surface. Lava can be found on the groundsurface in the volcano. There are 3 types of igneous rocks. They are extrusive or volcanicrock (diorite, gabbro, granite) which has small crystals, hypabyssal rock and plutonic rock orintrusive rock which has large crystals. They can be classified by their texture and mineralcomposition. 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
2Sedimentary rockSedimentary rocks are the transformation of existing rock types which can be formed bythe 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 wereformed by the weathering and erosion from the source area which are transported to the placeof deposition by water, wind, ice and so on. Sedimentation can also be formed as mineralparticipate 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 behaviorkinds of sedimentary rocks
3Metamorphic rockIn the word of “metamorphic” means “change in forms”. Metamorphic rocks are fromthe transformation of existing rock types. The basic types of metamorphic rocks are slaty,schistose, gneissose, granoblastic and hornfeisic. Metamorphic rocks are formed bycementation, crystallization of water and compaction. In metamorphic rocks, lots of changesare occurred in texture and mineral composition due to the difference of extreme pressure andheat. 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 texturesMetamorphic rocks
4Task 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 rockWhen metamorphic rock is forming, the surrounding of temperature and pressure canbe recorded how much they are affected. The rocks provide clues their transformation into ametamorphic rock. Before the transformation of metamorphic, the rocks may be sedimentary or igneousor other types of rocks. They are physically deformed and chemically changed due to extremetemperature and pressure. The elements in this rocks are changed to form new minerals. Andthe rock will be different after the metamorphism has occurred.