Convergent boundaries means that the two plate collide into each other pushing up the land and create the mountains (as shown in the diagram). Finally, the last landform the tectonic plates created is the CT river valley or rift valley. A rift valley is a fault line in the ground usually with steep mountains or rocks on the side. When pangea split the CT rift valley formed.…
The Ercall Quarries were visited on October 21st, 2017. It is an important geological site and is part of the Site of Special Scientific Interest (SSSI). The Ercall sometimes known as the Ercall Hill, is a small hill in the county of Shropshire, England. The site includes 540-million-year-old ripple beds and ancient pre-Cambrian lava flows in exposed quarries. There is a M54 motorway near the Quarries, giving it easy access to the Quarries.…
In the TPMP, there are specific areas such as the Rattlesnake Mountain Sill, located in the western part, that has the best exposed sill with medium to fine grained syenodiorite rock in the northern and southern regions of the mountain (Carman, 1994). The textures in these rocks go from a glassy devitrified content to very fine grained on the surface and medium to coarse grained in the center where contact with country rock and fast cooling cannot occur (Carman, 1994). The major minerals contained within these basalts are augite, olivine, Fe-Ti oxides, and biotites which contain compositional zoning, and zoning in feldspar grains and some pyroxenes (Carman, 1994). Phenocrysts occur on the cooled edges of the Big Bend sills which, when present in a magma intrusion, are rather important because the settling of phenocrysts signifies the major factor in differentiation in intrusions (Carman, 1994). However, phenocrysts are very rare in the Rattlesnake Mountain Sill contact rock, but that does not rule out the possibility of flow differentiation that may have reduced the phenocrysts along the borders (Carman, 1994).Plagioclase grains have a bimodal size distribution with the smaller size having a greater plethora than the larger of the two because the larger ones were transported in by…
The exposed rock material has a visible reverse fault, and is heavy faulted/folded. Visible soil, and vegetation growth on exposed section of the formation. Visible iron oxide staining from fractures in the section both natural, and manmade. Alternating material layers light grey to dark grey in the formation, and thick bands. 0 to 3feet of the section is composed of light grey, and soft material.…
Statement of Problem The Ely Copper Mine was declared a superfund site in 2001. Mining activity occurred from 1821 to 1920 Ore body discovered in 1813 Location The Ely Copper Mine is located in East Central Vermont in the rural town of Vershire, Orange County. The site is part of a region referred to as the Vermont Copper Belt, or the Orange Country copper district. Over 30 miles long, the belt runs in a NNE–SSW direction. The Ely Mine is one of three major mine sites in the region.…
The Badlands formed from a complex geologic setting. The topography that we see today is formed from erosion of the soft and not well-consolidated rocks. The oldest rocks found at The Badlands National Park are the Upper Cretaceous mudstones of the Pierre Shale (Graham, 2008). Overlying the Pierre Shale is the Fox Hills Formation, and overlying the Fox Hills Formation is the Tertiary White River Group. The White River Group contains a paleosol that are bright red.…
The rocks in this formation are resistant, and they usually form on high ridges. The second member of Kootenai is the Upper Clastic, which exhibits red to orange colored soils. The grains of this clastic stone vary from fine to sand-sized. They have finer grains than the Lower Clastic unit, due to different deposition environments. The third member is the Middle Limestone, which consists of compacted and precipitated calcium carbonate.…
Introduction On September 12, and October 3, 2016, we stopped at 6 locations north of Northampton in the Deerfield Basin of the Connecticut River Valley (Figure 1). The purpose of these stops is to examine rocks, interpret depositional environments for each rock formation, and discuss the geologic history of the Deerfield Basin based on observations and interpretations. Early Mesozoic lithospheric extension led to the development of a long sequence of rift basins. The Deerfield basin is the erosional remnant of one of these rifts exposed in North America after Pangaea separated during the Carnian (Olsen et al., 1992).…
As evident in figure 7, there are minimal “edges” to the rocks. Most, rather, are smoothed over. This type of physical weathering is a result of glacial activity that occurred ten to fifteen thousands of years ago during the Pleiothestine Epoch. As a one mile thick glacier, the Laurentide Ice Sheet retreated Northward over the surface of the rock, it smoothed edges, and created scratches in the rock, as evident in figure 2. A similar type of weathering also occurred on the white mountains.…
Old Idaho Penitentiary Site, Boise, ID 43°36'10.0"N 116°09'43.0"W Old Idaho Penitentiary Site The Old Idaho Penitentiary Site was built in 1870, and the first prisoners arrived two years later. That was also when it was first opened to Idaho. The prison had one cell at one point, but now it has several cells.…
Black grains of biotite and white grains of plagioclase are dominant in the hand sample. We also see signs of myrmekite forming within this facies. Since this facies consists of considerably smaller grains than the surrounding units it is safe to assume the magma that formed this facies rose to the surface at a faster pace which did not allow the crystals to grow as large as the rest of the…
The processes that formed the area are amazing to think about how a once ancient sea bed became one of the nation’s top tourist spots. The inland sea that left a deposit after deposit of sandstone and shale. Then an intrusive magma that made its way through the crust, only to cool and become granite and pegmatites. This magma changed the existing rocks making schists and quartzite. After the inland sea receded erosion dominated the area eroding many layers of rock that had been deposited.…
[hider=NS skeleton] [center][img]http://vignette3.wikia.nocookie.net/althistory/images/f/f4/Flag_of_Montreal_(No_Napoleon).svg/revision/latest?cb=20120513021903[/img] [h2]Choedal Kingdoms[/h2][/center] [u][b]Nation Overview[/b][/u] Choedal Kingdoms is an absolute monarchy country located north of Ardäin and Mille-Sessau. The lands are average for farming and the mountains are useful to miners. They are one of few nations where farmers aren't the majority, the miners are the majority. Most of the lands aren't as rich and fertile as land south of the nations; however, they have control of the mountains and that's where the miners come into the picture. Despite the increase in miners, there was still a need in farmers and they settled near…
Exfoliation, mass wasting, and trickling water remove the lessened material enlarging hollows into alcoves. A final uplift caused the streams to down cut rapidly, removing sediment and creating canyons. If the bedrock is wetter, then older alcoves will form, deepen, and then collapse within the canyons walls, while new alcoves are being created. Headward erosions in the canyon, made a drainage pattern, which was really intense during the cooler and more humid climates. In present time, we have a much drier climate, which is causing the erosional process to move at a much slower rate.…
Also, tectonic plates moved through the solid earth in a cycle between the crust and the mantle over very long periods of time. Plate tectonics form the Earth’s crust and are floating above the mantle. The boundaries of the plate tectonics either form mountains or volcanoes from magma beneath the surface, or are subducted and recycled back into the mantle as it moves through the solid earth. Eldfell was formed when magma came up through a long fissure on the island from the mantle, which was part of the repetitive cycle of magma moving through the crust and the…