Metamorphic Rocks Research Paper

The collection of the rocks was based on just picking up the most amount of difference looking rocks that was possible and bringing them home to analyze. This was done for about two months from many difference locations including campgrounds, beaches, rivers, highways as well as construction sites. After about two months there were many rocks so I started to analyze and take out the rocks that were of the same kind. I found many granite, basalt and conglomerate rocks.

Next, we can see that the rock displays a subtle porphyritic texture with plagioclase comprising the phenocrysts. The overall texture of the surrounding groundmass is granoblastic equigranular. Under thin section we also see a weakly defined foliation evidenced in the preferential alignment of actinolite grains and to a lesser extent chlorite grains. Undulose extinction is also observed in quartz indicating the rock was subject to deformation. The normalized quartz, alkali-feldspar, and plagioclase (QAP) values of this rock indicate that it is classified as a grano-diorite according to the IUGS QAPF classification system which is consistent with the hand sample interpretation.

Environments where sediments are elated and deposited quickly are high energy environments like ocean shores, or rushing rivers. Eco systems where small particles of sediments are often deposited in low energy areas. This is found in regions where there are deep lakes or swamps. Landforms shaped by erosion are tall, jagged structures with grazes in layers of rock and landforms produced by deposition are flat and low lying. Landforms created by deposition are alluvial fans, sandbars, moraines, eskers, and deserts. While landforms created by erosion are mountains, valleys, hoodoos, sea arches, sea caves, plains, sea cliff and

The tiny pieces of rocks broken off by weathering are called sediment or alluvium. Erosion is the process of transportation of this sediment which on sea cliffs sediments becomes part of the seafloor and is washed away with the waves. The larger rocks that are broken off by sediment as shown in this picture are called scree or talus; scree builds up at the bottom of cliffs as the rocks tumble down, these piles are called scree slopes or talus piles.

Rodger the rock was a very lonely metamorphic rock that didn't have many friends. Then one day he melted into magma, cooled and formed into a igneous rock.. He still had a pretty hard life but it was a little better. Its was a very bad Monday when he was walking home from school and got into a fight with a super strong diamond rock.. The Diamond beat him to sediments. Finally he was sick of this sad life and he picked himself up and was compacted and cemented together into a sedimentary rock.. After a year or 10,000 he got weathered and eroded into a sediments and soon into a different sedimentary rock..

Regional metamorphism of slate from mudstone occurred due to changes in temperature and pressure over an area of the crust. Orogenesis (mountain building) due to the collision of continents lead to increased pressure and temperature. (Rock Library, 2016) The mountain grew and its base melted due to the intense heat; this magma invaded the original slate and formed a granite intrusion. This happened underground millions of years ago and after weathering it is now visible from the surface. (Devon County Council, 2016) The Dartmoor granite was intruded into Devonian and Carboniferous sandstones, limestones, shales and lavas.(Woods, S. 1988) These neighbouring country rocks were altered, resulting in the development of many types of metamorphic rocks, which form an aureole around the granite. (Keene, P. 2001)

Sandstone Classic sedimentary rock composed mainly of sand-sized mineral or rock grains (quartz or feldspar). Usually porous and are valuable aquifers and petroleum reservoirs. Red color suggests iron oxide staining, which helps cement many of the grains. Likely formed in an area in which there were numerous iron deposits, very common in what is now the American Southwest.

In the beginning of my life, I was created by the slow crystallization of magma below the Earth’s surface. My rock type can come in different colors including red, pink, gray, or white. I am a gray color with some white and black. I, a granite rock, am the most known type of igneous rock.

According to the Dunham Classification, which is a produced classification of carbonate rocks, coquina falls under grain-supported and lacks mud. Everything that keeps the rock held together is mostly the shells themselves. Every rock has specific mineral properties that

Rock that is formed from small parts of rock or stone that have been compacted by pressure.

Although convection current in the earth layer are closely associated with the movements of the tectonic plates they also play a role in the formation of rocks, such as the igneous and metamorphic rocks. Igneous rocks form through the solidification of magma or lava. This can occur in two different places, on earth surface and under earth surface. Rocks that form on earth surface are called extrusive, rocks that form under earth's surface are intrusive plutonic rocks. A Metamorphic rock is formed when the protolithic rock is exposed to heat and pressure.There are also two different type of metamorphic rocks contact and regional metamorphic rocks.

One way is Abrasion which is the grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles. Another way is through Exfoliation which is the process by which sheets of rock peel away from a large body of rock because pressure is removed.

Depending on what the sedimentary rock is formed by, determines whether is known as clastic or chemical. Clastic rocks are composed of particles from weathering. They are then sorted by grain size, gravel being the largest and clay being the smallest. A few examples would be sandstones and shales. Chemical sedimentary rocks are biochemical, and contain ions in the solution from weathering. These are also further classified. First you have limestone, which can be either organic or inorganic. An example would be fossiliferous or chalk. Next is dolostone, and it is formed from dolomite. Chert is next; and can be organic or inorganic also. Flint and jasper are some examples of chert. Rock salt and gypsum are what are known as evaporites. These form from the evaporation of saline waters in an arid environment. Finally there is coal, which is organic and forms from buried plant remains and carbon. There is one more type of rock that is classified the same way as the previous two.

Hydrothermal solutions cause alteration of the surrounding rock. Hydrothermal ore-forming processes can be found everywhere on Earth throughout the crust, most observed ore deposits have more than likely been touched by Hydrothermal ore-forming processes. Rose and Burt (1979) state that “Hydrothermal alteration is conversion of an initial mineral assemblage to a new set of minerals more stable under hydrothermal conditions of temperature, pressure, and most importantly, fluid composition” (p. 173). Hydrothermal alteration is considered a type of metamorphism, metamorphism is the recrystallization of a parent rock a more stable to new minerals. The type

Magma is a mixture of molten rock found beneath the surface of the Earth. As well as molten rock, magma may also contain suspended crystals, dissolved gas and sometimes gas bubbles. Magma often collects in magma chambers that feed volcanos.