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Originally posted by BeastMaster2012
There are 2 questions i have.
1. What year was it in our ancient past that this land would have been above water?
2. Are there any programs or websites that show how the earth would have looked like when the sea levels were -300 feet?
Originally posted by BeastMaster2012
1. What year was it in our ancient past that this land would have been above water?
2. Are there any programs or websites that show how the earth would have looked like when the sea levels were -300 feet?
Originally posted by Essan
Originally posted by BeastMaster2012
1. What year was it in our ancient past that this land would have been above water?
2. Are there any programs or websites that show how the earth would have looked like when the sea levels were -300 feet?
See levels at the time of the Last Glacial Maximum (~20-18,000 years ago) were around 400ft lower than today. They steadily rose thereafter until reaching a peak height ~6,000 years ago.
If you have Google Earth (version 4) you can download a programme here which enables you to see how sea levels would have been when ~400ft lower.
There is also a small scale map here:
One of a number produced by Wm. Robert Johnson
Although I wouldn't normally recommend journalist Graham Hancock (his research in some areas leaves much to be desired), you might like his book Underworld: Lost Kingdoms of the Ice Age which has many maps showing how the post glacial sea levels rose, and the areas of land lost around India and other regions (as well as discussion of possible, submerged, human structures - not all are necessarily quite what he implies though)
Originally posted by BeastMaster2012
If you look at all of the light blue areas that are currently under water, it appears that if the water levels were lower there is a bunch of land that suddenly washed over the lands. If you use google earth, you can use your mouse pointer and hover over the land to find out the elevation.
1. What year was it in our ancient past that this land would have been above water?
Originally posted by Byrd
These areas are called "continental shelves", and the sinking wasn't quick. Catastrophic sinking is caused when a section of continental shelf suddenly slides down many feet below what it used to be. Earthquakes/volcanos are usually involved, but the total area of land sunk is fairly small compared to the Earth.
They are millions of years old, by the way.
Originally posted by BeastMaster2012
I don't think they are millions of years old. Was the Alaska land bridge millions of years old?
The land bridge was there before the last ice age. If you look at google earth with the above application to see how sea levels were around 18,000 years ago you would see that most of the continental shelves were above the sea.