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Essay / Research Paper Abstract
A 7 page paper discussing the climate change that has occurred in the area of Crawford Lake, Ontario over the past 13,000 years, using the lithology of the lake as evidence. The paper discusses the records of oxygen isotope, calcium carbonate concentration and detritus layer as evidence for a moist climate followed by change to a dry, warm climate that once again was followed by a shift back to the climate of the present day. The paper is based on the research of Zicheng Yu, who has studied Crawford Lake extensively. Includes 3 figures, including a photograph of Crawford Lake core samples. Bibliography lists 5 sources. Core sample photograph contained separately in KSgeoCrawLkCore.rtf.
Page Count:
7 pages (~225 words per page)
File: CC6_KSgeoCrawLk.rtf
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Unformatted sample text from the term paper:
area surrounding Crawford Lake, Ontario, has been studied extensively for information about environmental changes within and in the vicinity of the lake over the past 13,000 years. The purpose
here is to review some of the information that has been discovered, particularly that regarding climate change and its effects in the Crawford Lake area. Climate Change
Climate change is a topic of immense importance to todays society. As greenhouse gases proliferate, projection is that they will (have) interfere with energy exchange
between layers the earths atmosphere, trapping both the gases and excess heat at or near ground level. Changes in average temperature that quantitatively appear to be relatively minor can
have a dramatic effect on the earth, particularly on all coastal areas where water levels can be expected to rise due to deglaciation. This in turn will affect the
water cycle of the entire earth; ultimate consequences on human and animal populations are the focus of most of the debates on the matter.
Study of areas such as Crawford Lake, Ontario provide rationale of why we should be concerned with the size of the footprint we leave on the earth that will
cause its water cycle to change in any way. Natural systems have had the same effect, and we have no control over them. The point is that we
will need to control our own behavior in the event that abrupt climate change occurs again within natural systems. Lithology of the Crawford
Lake area indicates that the climate of the area was dry and warm 13,000 years ago, a period representing a climactic change from a very moist climate. The dry
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