There are many different glacial landforms created by glacial erosion, one of these landforms is U-shaped valleys or glacial troughs. This glacial landform has many distinct characteristics. One of these characteristics is that it has very steep valley sides caused by the glacier as it moves down the valley eroding the sides of the valley by the processes of abrasion and plucking. Abrasion is when the boulders and moraine carried by the glacier rubs and erodes the valley side as it physically moves down the valley. Plucking happens when the water in the glacier freezes inside of the cracks in the individual rocks on the valley side then the water freezes and as the glacier moves the rock is plucked or torn from the valley side producing the steep side to the valley.
The valley also has wide flat floors caused by ice movement aided by large volumes of melt water and moraine has greater erosive power than that of rivers. This results in the wide floors. The greater erosive power of the glacier than that of a river also causes the valley to be very straight compared to the valley shape that a river has eroded, it has no interlocking spurs because the shear power of the glacier has slowly smashed through the original spurs of the valley. Just before the glacier forms and when the temperatures are cold enough known as the the “pre glacial” period the process of freeze thaw takes place, this aids the formation of the u shaped valley. Freeze thaw is when the water in the summer enters the cracks of rocks and the in winter when the temperatures have gone below 0 degrees centigrade the water freezes in the cracks and because when water has frozen the particles in the water have less movement and expand causing the rock to shatter. Freeze thaw therefore helps in the formation of the u shaped valley by breaking up the valley floor so that the floor is weakened so the glacier can easily and speedily erode the valley floor by all the conventional forms of erosion like plucking abrasion but with greater ease.
There are many of examples of u shaped valleys around the world because wherever there has been a glacier there will be a u shaped valley that has been formed as it moves down the valley. One example of a u shaped valley is that of the valley in the Swiss Alps near san moritz
I believe that this drumlin is closely related to erosion and accretion hypotheses of drumlin formation. This is because of its location being close to a steep valley wall.
This is a report based on three days of observations and testing in the region known as the Peterborough drumlin field. It will address a variety of regional elements, such as climate, soil, vegetation, hydrology, geomorphology, and geology. A variety of sites located on the Canadian Shield, the zone of thick glacial deposits to the south, and the transition between them will be the focus of the report. It is supplemented with previous research on the region. September 8, 1999, day one of the field study involved an area of largely granite bedrock that is part of the Canadian Shield and is the most northern point of study (see Map 2). September 9, 1999, day two, involved three main areas of study: the Bridgenorth esker (Map 3), Mark S. Burnham Park (Map 4), and the Rice Lake drumlin (Map 6). These sites are in areas of thick glacial deposits. September 10, 1999, day three, involved studying the Warsaw Caves (see Map 5) as a transition zone between Precambrian Shield rock to the north and Paleozoic rock to the south. A general map of the entire study region is provided by Map 1.
At the end of the last ice age windblown silt covered the lava and basalt deposits. This silt would go on to create the fertile rolling hills of the Palouse. This soil is more than a hundred feet deep in places. Soon, enough time passed for vegetation to take place and more soil started to form.1 The lava flows would end up damming streams flowing from the mountains; in turn forming the current lakes of the region. Layered between the flows of basalt are sand and gravel deposits that washed down from mountains.1
More specifically, Trois-Rivieres is located in an area with flat and rolling hills, and fertile soils that play a huge part of Trois-Rivieres’s economy. The formation of the Great Lakes-St Lawrence Lowlands happened during the Paleozoic era. “The Great Lakes-St Lowlands were formed by the effects of glaciation. This is caused the city’s rolling landscape where flat plains are interrupted with glacial hills and deep river valleys. After the glacial period, when a large volume of water melted out from the glaciers, the lakes were large, even larger than they are today. However, the lakes shrank to their present size, and flat plains of sediments remained. These sediments formed excellent soil for farming” (Pandya, n.d). This process left behind a large amount of sediment rock, which was beneficial for the manufacturing industry.
The average elevation in the Hudson Plains is 120m above sea level. It is a flat lowland area. The land is made up of mineral soils, with few outcrops of underlying sandstone and shale. This land was created when the weight of glaciers depressed the Hudson Bay region and the ocean waters flooded areas up to 300 km inland from the current coastline. Then, during the retreat of the huge continental ice sheets, drainage into the Hudson Bay was blocked and lakes (Agassiz and Ojibway for example) were formed along th...
In the essay, “Global Warming is Eroding Glacial Ice,” Andrew C. Revkin argues that global warming is the primary cause for many of the world’s natural disasters; including flash floods, climate change, and the melting of the polar ice caps. He includes multiple accounts of expert testimony as well as a multitude amount of facts and statistics to support his theory that global warming is a threat to the world. However, in the essay “Cold Comfort for ‘Global Warming’,” Phillip Stott makes the complete opposite argument. He argues that global warming is nothing to be worried about and the melting of the polar icecaps is caused by the interglacial period we are currently in. After reading both of these essays and doing extensive research on both viewpoints, I completely agree with Revkin that global warming is an enormous threat to our world today. My research not only helped me to take a stand but it also showed me the invalidity in Stott’s essay.
Periods that the folding occurred in which formed the outlines of the basin as it
Laverne Cox is a prominent actress and advocate for trans rights, most recently gaining attention for her role in the Netflix original show “Orange is the New Black”. Cox plays a transgender prisoner named Sofie, who throughout the course of the show faces bigotry and cissexism from her peers as well as the prison staff. The role gained attention for being one of the first prominent trans characters to be played by a trans actress in a way that accurately demonstrates the difficulties trans individuals face. Though recent years have seen an increase in trans awareness, there is still a distinct disconnect in the communicative cultures between trans and cis speakers when it comes to the subject
By law enforcement wearing body cameras can be the first step into taking disciplinary action tour wards police brutality. Body cameras will encourage police officers to be more responsible on handling stressful situation and have more control on themselves, because their actions, he or she are in the public eye. For example study shows, when body cameras where issued police, officers decreased 60 percent of excessive force in the first year initiating of cameras.”(Donovan). The body cameras can control a serious situation
Valley Region of the Appalachian Mountains and Subsequent Karst Regions in the State of Virginia
Racial tension in America is at a historical high-point. According to Race Relations (2015), the percentage of people surveyed regarding relations between races to be “very good” or “somewhat
Orwell begins to introduce the theme by showing how Napoleon obtains leadership over the animals. However, Orwell does not immediately show corruption, he merely demonstrates the idea of everyone starting out as “equals.” At the beginning of the novel, all of the farm animals fight for their freedom. Orwell then presents the reader with two pigs containing an intelligence that surprasses the other animals. “ Prominent among the pigs were two young boars named Snowball and Napoleon…” (Pg. 35). These pigs have the potential to...
Critical thinking is recognized by accrediting bodies as an outcome for graduates of bachelor and master’s level programs, but no consensus exits on its definition and measurements (Ali, Bantz, & Siktberg, 2005, p. 90). Some critical thinking “descriptors are: confidence, contextual perspective, flexibility, inquisitiveness, intellectual integrity, intuition, open-mindedness, perseverance, and reflection. In addition, individuals who think critically have the ability to use the cognitive skills of analyzing, applying standards, discriminating, seeking information, reasoning logically, and transforming knowledge (Scheffer & Rubenfeld, 2000) (Ali, Bantz, & Siktberg, 2005, p. 90).
Scriven, M. & Paul, R. 1987, ‘A Working Definition of critical thinking’, The Critical Thinking Community. Retrieved 18 May from
The book Animal Farm is based on the Russian Revolution with Napoleon represents the dictator, Stalin. Towards the end, Animal Farm loses its democracy like Stalin did during the USSR Revolution. Napoleon used other animals such as Squealer and the dogs to keep up control of his power and did not give any of the other animals a say in what went on. This allows Napoleon 's self-interest to be help by the power that comes to him. To keep that power Napoleon engravers fear into the animals ' minds, exploits their hard work and bends the rules to suit his needs. He uses militaristic tactics such as biding his time for example when he waits until Snowball 's windmill plans are finalised before using them himself. This again ties in with the Russian revolution. Orwell uses Napoleon to express his view on Stalin in the ways that he keeps and maintains control of animal farm as Stalin did of