The Quaternary period Essay Example | Topics and Well Written Essays - 3000 words

The Quaternary period - Essay Example1).In order to accurately gauge the situations of the past in provision for the future, it is necessary to establish a system or a scale of timing of these occurrences. In addition to knowledge of all the operations of the earth, having in caput a specific (or even general) idea of the time that it takes for events to occur gives historians, scientists, and even the man in the street an idea not only of the future touch of actions d nonpareil today, but also when to expect those effects to materialize. Because of this, many scientists have worked hard at developing different techniques to date the past. Techniques have developed everywhere the years, from those that rely on myth to ones that rely on scientific evidence. The general trend of these techniques as the were developed was to posit an older and older earth. The time for the start-off of the earth was at first estimated at about 4 ka BP (Walker, p. 2) now theres evidence of its begi nning approximately 15 ba BP (Greene, 2003, p. 347). Though no one technique is conclusive, they counterbalance each other to produce a general timescale concerning the evolution of the earth., These techniques have proved useful in examining the evidence for the geological and climactic activity of the earth during the Late Glacial and Early/Holocene era, and the possibilities for human activity resulting from it.Modern Quaternary science began when Louis Agassiz posited the former existence of a Great water ice Period (Walker, p. 3). Later, when scholars got accustomed to the Ice-Period idea, Albrecht Penck of Germany attempted to estimate the duration of interglacial periods by measuring the depth of weathering and intensity of erosion in the northern Alpine region of Europe (p. 3). Other attempts at gauging the length of periods in the Quaternary include the analysis of laminae, which give evidence about the types of activity of the soil and its vegetation through the analysis of layers of sedimentation in the earths crust. In this study, this technique is used to analyze the layers of soil existing in the British Isles and make conjectures about what sort of climate or geological occurrence produced them. Looking at the size of the layers also gives an idea of the duration of each phase and sheds light on probable oscillations within each phase.Dendrochronology was developed during the early on part of the twentieth century, which uses the analysis (counting) of tree rings to gauge the age of a tree and by extension the age of a period. This kind of standard is useful in establishing the age of civilizations. This works because trees within a small region often share the same experiences of good and bad years, with resulting patterns of wide and specify rings that can be matched from tree to tree, from living trees to dead trees, and even to timber, charcoal, etc., used by human beings (Calder, 1984, p. 224). Because trees also show, from their rings, the type of weather experienced in a given year, tree-ring analysis has been applied here to the study of the climates experienced during the Holocene epoch. This technique is called dendroclimatology (Walker, p. 3). Tree-ring analysis, though able to give only a comparatively laconic view into the past, is useful in this study, as the entire Holocene epoch lies just within its range.With the advent of radio-carbon dating came a very important tool in the