Geology is the study of the Earth. It includes not lonesome(prenominal) the surface process which pass on shaped the domains surface, still the study of the ocean floors, and the interior of the Earth. It is not only the study of the Earth as we see it today, but the history of the Earth as it has evolved to its present condition.
Important render: The Earth has evolved ( compoundd) throughout its history, and will continue to evolve.
The Earth is just about 4.6 billion years old, human beings go through been around for only the past 2 one thousand meg years.
oThus, mankind has been escort to only 0.043% of Earth history.
oThe first multi-celled organisms appeared about 700 million years ago. Thus, organisms have only been witness to about 15% of Earths history.
Thus, for us to have an understanding of the earth upon which we live, we must mien at processes and structures that occur today, and interpret what must have happened in the past. One of the major difficulties we have is with the period scale. Try to think 1 million years-- Thats 50,000 sequences longer than most of you have lived. It seems like a long time doesnt it?
Yet, to geologists, 1 million years is a relatively short period of time. more discussion about time in later lectures. simply one thing we have to remember when studying the earth is that things that seem like they take a long time to us, may take only a short time to earth.
Examples:
A river deposits about 1mm of sediment ( bollocks) each year. How thick is the mud after 100 years? -- 10 cm exactly noticeable over your lifetime.
What if the river keeps depositing that same 1 mm/yr for 10 million years? Answer 10,000 meters (6.2 miles). Things can change drastically!If you want to get a full essay, mold it on our website: Orderessay
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