Category: Science > Earth Sciences
Asked by: teragram-ga
List Price: $2.00
02 Mar 2006 20:31 PST
Expires: 01 Apr 2006 20:31 PST
Question ID: 703108
Why is most of the earth's land mass located in the northern hemisphere?
Re: Planet Earth
Answered By: answerfinder-ga on 03 Mar 2006 01:30 PST
Dear teragram-ga, This aspect of geology is still not fully understood, but the current theory is that the earth?s surface is split into separate plates which are continually moving in relation to each other. Millions of years ago, it is argued, it was the opposite situation with most of the land mass above sea level in the southern hemisphere. We just happen to be living in an age when most of the visible land mass above the sea level is in the northern hemisphere. I recommend that you read in its entirety these page from the US Geological Survey which describe the Plate-Tectonics Theory. There are numerous diagrams to assist your understanding. http://pubs.usgs.gov/gip/dynamic/dynamic.html#anchor19309449 University of California Berkeley has some animations which will also help you. http://www.ucmp.berkeley.edu/geology/tectonics.html I hope this answers your question. If it does not, or the answer is unclear, then please ask for clarification of this research before rating the answer. I shall respond to the clarification request as soon as I receive it. Thank you answerfinder
Re: Planet Earth
From: ted131-ga on 03 Mar 2006 11:08 PST
i would say this is more than the "current theory". It is established fact.
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