How long ago did Pangaea occur?

Answer 1

it didn't

seriously - this is a question no one can answer. There are theories about it, but there was no one there to either observe it or if there were, no one wrote it down. So there you go.
Anyone - scientist or not - who gives you an answer based on a definate number of years/millenia - is not telling you the truth.

Answer 2

The present theory of continental drift was first proposed by Alfred Wegener in 1912. It is thought that all the continents were once joined together in one super-continent, named Pangaea. The rest of the earth was covered with one huge ocean. Due to the inadequately explained geologic forces causing upwelling of molten material, Pangaea split apart into the major continents we have today. The upwelling material was thought to be a result of convection forces within the earth. This material reached the surface at oceanic ridges and returned to the earth at subducting oceanic trenches. Up until recently this theory was thought to be very controversial and was largely rejected because of an inadequate explanation for the forces required to move the continents. But the overwhelming evidence indicates the continents are moving and were at one time joined together in some fashion.

Proposed Theory of Continental Drift

If everything in the universe is expanding, then the inter - molecular spaces between particles should be expanding also, although perhaps at a different rate due to the effects of nuclear, electrostatic or gravitational forces. This expansion rate may be difficult to detect at the intermolecular level, but for an object the size of the earth, the expansion should be apparent as shown with a little further development of this idea. If the earth is expanding at the same rate as new material is upwelling, then this expansion becomes a new driving force behind continental drift, as well as other proven causes. Indeed, a force due to the expansion of space itself would definitely prove to be a formidable one. The most recent expansions being the ones that split Pangaea up only 250 million years ago.

Answer 3

it existed during the "TRIASSIC Period" , between 205 million years ago and 240 million years ago
hey try to find this book, its a very comprehensive discussion substantiated with real world evidence in the geologic record from many places all around the planet... explaining what was before Pangea and when Pangea existed and how it has been drifting apart since, and evidence that it still is drifting. Its the most awesome interesting book on physical geography / geologic history of the planet. Get it, read it all, when you have time. Its "The Making of a Continent" by Ron Redfern, ISBN 0-8129-1079-6 Enjoy !

Answer 4

Pangea existed from at least about 305 million years ago to about 170 million years ago.
To see a series of maps through time, go to Dr. Chris Scotese's web site: http://www.scotese.com/earth.htm

By 390 million years ago, Devonian, some of the oceans between continents were disappearing at subduction zones and continents were beginning to form a kind of "pre-Pangea" (see map at http://www.scotese.com/newpage3.htm)

Pangaea (Pangea) was beginning to form by Early Carboniferous time, about 356 million years ago, as subduction closed the ocean basins between Gondwana and Euramerica, forming the Appalachian and Variscan mountain ranges (http://www.scotese.com/newpage4.htm)

By late Carboniferous (aka Pennsylvanian) time, about 305 million years ago, Euramerica and Gondwana continents had collided to form western Pangaea (or Pangea). http://www.scotese.com/late.htm

By the Early Triassic, about 237 million years ago, the ocean between Euramerica and Siberia had closed, adding on this one last big continental piece of the Supercontinent. At the end of the Triassic, Pangea started rifting apart, but didn't yet form ocean basins between continents--so it was still a Supercontinent. http://www.scotese.com/newpage8.htm

By Early Jurassic,195 million years ago, "south-central Asia was assembled."
By the middle Jurassic (circa 165 million years) ocean floor formed at spreading ridges between North America and Gondwana (a juvenile Atlantic ocean). This marked the end of Pangea, the supercontinent. http://www.scotese.com/late1.htm
And then the southern big continent of Gondwana(which had been part of Pangea) began to split apart as well.

Answer 5

6 million years ago

Answer 6

13 million years ago