Art Analysis: The Ice Age

Out wash has small sediments sorted in layers, and Till has large sediments not sorted into any layers. Till can leave behind features like Kame, Drumlins, and Moraines. Drumlins are elongated hills of till. Drumlins can be found in Central Minnesota and/or South of Brainerd. Moraines are very large ridges of Till. Moraines can be found in West/Central Minnesota. Outwash can leave features behind like Outwash Plains and Eskers. An Outwash plain formed by melt water of a glacier. Outwash plains are important because they are very great for farming which is a huge part of America. Glaciers can leave behind features like Kettle Lakes. Kettle Lakes formed by ice chunks falling off the main glacier, causing an indent on the earth's surface. Then the ice chunk will melt causing the hole to fill up with water. Most of Minnesota’s Kettle lakes are in Moraine/Terminal Moraine

Remote sensing has become a very valuable tool for documenting the response of glacier to changing climate (Bamber and Kwok, 2003; Kuhn, 2007; Pellikka, 2007; Solomon et al, 2007) because the rugged terrain, inaccessibility and legendary poor weather of glacier areas has resulted in relatively few field- based studies. Indeed, in order to use glaciers and their changes as indicators of climate change, or as an early warning signal for sea level rise, remote sensing is the only tool to provide glacier change information from all the continents and from a large number of glaciers and ice sheets. On the other hands, because space borne and airborne remote sensing data provide superior cost- effective and area effective data and methods for monitoring the glaciers and their changes, part of this monitoring can be carried out by it.

These formations caused the water level in many lakes to drop, and flow into rivers. With the weight of the glacier removed from the land, isotonic equilibrium occurred. The region began to rise, at a rate of about thirty centimeters per century (Leelanau, 2004). Water levels in the upper basin began to rise, forming lakes that filled the Michigan, Huron and Superior basins. Today, this isotonic rebound is still occurring, but at a rate of 53 centimeters per century. The rebound occurs at different rates across the area that was covered by the glacier. The difference in rates emerges from the difference in weight of the glacier. Areas that are rising the fastest today are those that had a thicker or heavier glacial ice, or those areas that had ice covering those most recently. Because of the difference in rates, the lower basin rose more slowly that the northern outlets (Leelanau, 2004). As the water changed directions to flow through the St. Clair River, the shape of the Great Lakes reached a point close to what they are at today. The shorelines and water level has changed, but the basic flow of water has stayed the same for the past 2,000 or so

Starved rock and St. Peter Sandstone are an erosional remnant of Ordovician period. These remnants contain Pennsylvanian clastics that survived the washing out of the Illinois River at the end of the Ice Age. Evidence for swift, turbulent, and deep water includes gravel bars and erosional features as high as 160 feet above the current level of the river, massive cross bedded sand, and gravel deposits along the river course.

The passage declares numerus reasons in hope of justifying the real causes of Little Ice Age existence during 1350 till 1900 CE. On the contrary, the lecture challenges all the aforementioned theories by passage and believes inasmuch as the outdated information used by passage all those clarifications are merely sheer implausible misconceptions. In what follows, three major hypotheses and their critics will be delved into nut briefly.

Outwash and till are similar but different at the same time and this is why they are both deposited by glaciers, but the way they are deposited is what makes them different. Till is simply the sediment left by the ice, outwash is deposited by the running water coming off of the melting glacier. Because water can sort sediment, and ice cannot, that is why the till is unsorted. Sorting just means when the rocks are sorted by size, bigger pieces together on the bottom, smaller pieces together on top. Glaciers are constructive and deconstructive they are deconstructive because they tear up land and the glacier does not stop for anything but it is easy to avoid. Glaciers erode the land and create landforms such as kames, eskers, and drumlins those terms will be explained a little bit later. Glaciers create valleys by shearing away the mountainside and moving it away. Some of the landforms that glaciers produce are drumlins, terminal moraine, outwash plain, and an erratic. Drumlins are elongated, teardrop-shaped hills of rock, sand, and gravel that formed under moving glacier ice. A terminal moraine is where the glacier reaches its max and starts receding making a deposit of till. An outwash plain is a flat area made by meltwater carrying outwash from the leading edge of the glacier. An erratic is a rock or boulder carried from a place where the Rock is common to an area where the rock is not

The Ouachita Mountains were also created with the collision of Gondwana as it pushed together seafloor and are tilted or twisted folds of earth crust. Streams usually flow along the folds. Most of the mountains are made up of sandstone and shale from the bottom of the former sea. This region is usually known for unique quartz crystals,

There are two distinctive features present in this unit. The first is the syncline and anticline that extend across the map in a NEE-SWW strike, shown in Figure 5.1 (Need to fix map to show this). The second is the thermal areole found in relation to the Beinn an Dubhaich granite intrusion.

The Oak Ridges Moraine is landform located in south central Ontario, Canada. It expands from Caledon and Rice lake river. Furthermore, it covers about 1,900 kilometers in Geographic area and is the most important landforms in Ontario. The Oak Ridges Moraine is made out of 4 wedge shaped structures running east to west ( Uxbridge, Pontypool, Rice Lake, and the Albion Hill wedges ). The wedges are separated from east to west and was formed by sedimentation, the Rice Lake wedge is separated from the other three moraines and is south of Rice Lake. The moraine is made out of major geophysical structures that shape the Oak Ridge Moraine. The western portion of the moraine is by the Niagara Escarpment, the escarpment channels give a way for a

During the Pinedale glaciation, there were two ice sheets. One of them being the Cordilleran Ice Sheet. The Cordilleran Ice Sheet was comprised of three main lobes. The Puget Lobe, Okanogan Lobe, and the Purcell Trench Lobe. The one lobe in Northern Idaho, near present day Lake Pend Oreille, was the Purcell Trench Lobe. When these sheets of glacial ice moved south they caused an ice dam to occur. J.T. Pardee states that “The evidence of icebergs, together with the apparent regency of the lake and the variable height of its surface, connect this lake with the glacial period, and readily lend themselves to the suggestion that its dam was of ice” (Pardee, 1910) This ice dam blocked the Clark Fork River which is near the boundary of Idaho and Montana. The water from the river was blocked and began to build up and formed Glacial Lake Missoula. Water

As I looked out the window, I saw walls of rocks all over the place. I also saw a lot of good rock exposure on the top of the mountain where the rock was to steep for the snow to stick to. You will notice that Mount Baker has an abundance of all sorts of rocks. From the rocks I examined I observed a lot of extrusive igneous rock, metamorphic rock and sedimentary rocks and you will find few places where you can walk continuously from shale or basalt into well-metamorphosed gneiss (Tabor & Haugerud). I observed rocks such as gabbro, shale, and types of extrusive and intrusive igneous rock such as basalt. The ages of the rocks range from about as old as the mountain, which is about 140,000 years old.

This problem could mark either the end of human civilizations or mark the beginning of the next era of human development. It would decide on our species survival, whether there will be another mass extinction like the one 65 million years ago. The question is “How might the breaking up and melting of continental ice in Greenland and the Antarctic affect Canada’s coastline?”. In the following sections, we have gathered an abundance of information from a variety of sources from which we will discuss, and analyze. We will find out how this data can help us understand the effect of melting glaciers on Canada’s coastline, as well as how and what we could do to stop or slow it down.

Champaign County was first covered by the Illinois Glacier (191,000—130,000 years ago), which leveled the region and covered it in a deposit of boulder clay. The county’s topography was then formed by the Wisconsin Glacier about 20,000 years ago. As lobes of ice from what is now Lake Michigan crossed the county, a deep (up to 300 ft) pile of glacial soil was created and topped by numerous moraines (any glacially formed accumulations of unconsolidated debris) forming small, flat watersheds with no outlets. The moraines formed as the Wisconsin Glacier advanced and receded many times over the Midwest. The Champaign moraine system now crosses the county in a northwest-southeast direction, and between the moraines ridges are broad plains of what used to be swampy land, most of which has since been artificially drained.

Intrusions within the coal-beds in the northern part of the Raton Basin have been destroyed in vast amounts (Johnson and Finn, 2001). Sills and tabular igneous bodies parallel to bedding are intruded in the middle part of the Raton Formation and are exposed in the Purgatoire River Valley (Watts, 2006). Sills within the basin intrude along a coal-bed instead of through the coal-bed, influencing a larger volume of the coal (Rooper et al., 2006). The sills in the basin are fine grained and distributed across the subsurface as well as intruded into the coals (Pillmore, 2003).

One of nature's most powerful and influential forces is also one of nature's coldest and slowest processes. These great icy rivers are called glaciers and have formed some of the most beautiful scenery on this planet. These enormous frozen bodies of water are often thousands of feet wide and deep and many miles long. They cover millions of acres of land and drastically change the land into beautiful mountains with many amazing features. One of the areas where glaciers have been most influential is in Yosemite National Park in California. Here almost every glacial feature is shown. However, before this information about glaciers in Yosemite was clear, there was the Yosemite Controversy with