Glacial period

Marin, there is a very compelling argument for stating that humans were the cause of the Pleistocene Overkill. Firstly, extinction did not happen slowly, overtime, which is typical of natural extinction. The extinctions occurred rapidly within a period of only thousands of years. Secondly, the extinctions of the large mammals directly correlate with the appearance of humans in those regions. Humans would have also targeted the large mammals as a primary desired food source. Additionally, the…

exactly climate change is and how big of a concern it is before proceeding to talking about the drastic change of the Himalayas that’s being caused by the same. What is Climate change? The climate change phenomenon refers to seasonal changes over a long period with respect to the growing accumulation of greenhouse gases in the atmosphere. Tackling this phenomenon is of utmost importance given the pivotal role that climate plays in the formation of natural ecosystems and the human economies and…

Glacial Melting – Cause, Effect, and Solution People and animals around the world need clean water year-round to drink and to use for growing crops and vegetation. Increased glacial melting is one casualty of global warming, which is caused by increased greenhouse gases like carbon dioxide, water vapor, methane, nitrous oxide, fluorinated gases, and ozone (EPA.gov, 2013;NASA, 2015), which tend to absorb infrared radiation (i.e. heat) that was emitted by the earth’s surface, which would have…

majestic features the earth has and creates in a one’s life time is breath taking. The hydrologic cycle is one interesting aspect that will be discussed and the state of Colorado will be used as an example. Another such wonder is the glacial landscape. How a glacial landscape is formed and some of its features will be discussed as well. Hydrologic Cycle The hydrologic cycle is a delicately balanced system dealing with water. With the earth’s oceans covering 71% of earth, which doesn’t include…

gouged out 240 meters of rock. The sediments got removed from their previous location and deposited in a huge pile, a terminal moraine in Long Island. The sediments acted as a dam when the glacier melted, which trapped glacial melt water, which formed the Glacial Lake of Albany. The Glacial Lake of Hitchcock began to form when the ice margin located at Rocky Hill CT, dumped a lot of sand and gravel into a lake basin.…

strong winds, there was a lot of precipitation in the form of snow. The snow helped to reflect the sunlight out of the Earth, adding to the cooling effect of the Ice Age. Furthermore, since there was a reduced amount of solar radiation during the period, the expanding glaciers were also able to further reflect out any radiation, leading to the initial decreasing in temperature as seen in negative feedback loops. However, towards the end of the Little Ice Age in the mid 1800’s, there was more…

refers to changes in the amount of radiation that reaches the earth’s surface. Sunspot cycles cause changes in solar irradiance. These occur over periods of eleven years, yet cause minimal changes in the suns luminosity and even smaller changes in the earth’s radiative equilibrium temperature. Such a small change in temperatures over such a long time period cannot explain…

Prior to the Great Oxygenation Event (GOE) there was little oxygen in the atmosphere. Oxygenation of the atmosphere occurred in two steps, at the beginning and end of the Proterozoic eon (Frei, et al., 2013). In the GOE the surface oceans began to become oxygenated (Holland, 2006). The Second stage of oxygenation is known as the Neoproterozoic Oxygenation Event (NOE) and occurred after the 650-635Ma in the Marinoan glaciation (Sahoo, et al., 2012) (Feulner & Kienert, 2014). The NOE is thought to…

Brian Harland in 1964. The core ideal of the theory is that during the Pre-Cambrian period, the continents of the Earth were located near the Southern Hemisphere, and the entire planet was covered in glacial ice sheets, from the Poles to the equator (Schrag, et al., 2002). The following essay will aim to explain the theory of the Snowball Earth in detail. Brian Harland based his theory on the fact that he found glacial tillites with origins in Greenland, deposited in tropical latitudes. The…

patterns and elaborate symmetrical designed flakes loose their shape as they come into contact with objects on Earth. When its builds up on these surfaces, the snow compacts itself into granular ice and then into firn as it gets into a dense form. Glacial ice is the most compact form next to ice containing 20% air composition. As we know as Mainer's, accumulation is the amount of measured snowfall, the same is true in geology but they see it as accumulated snowfall annually on a glacier. The…