This thread has been opened in case Faith wants to pursue her position that the Gulf of Mexico is not a sea.
"Sea" is a rather vague term - is it not? Sort of a synonym for "ocean?"
In that case... all gulfs would be seas. But not all seas would be gulfs.
I suppose that, literally, I wouldn't say "the Gulf of Mexico is a sea" - but I would say "the Gulf of Mexico is part of the sea?" However, standing at a beach in the Gulf of Mexico... I would equally say "This is the Gulf of Mexico!" or "This is the sea!"
From Wiki" "The Gulf of Mexico (Spanish: Golfo de Mxico) is an ocean basin and a marginal sea of the Atlantic Ocean, largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba."
Bolding is mine.
"You were not there for the beginning. You will not be there for the end. Your knowledge of what is going on can only be superficial and relative" William S. Burroughs
It is the floor of a sea. If it ever was part of the geologic column, it is now. And deposition is adding to it.
What is a sea:
quote:a : a great body of salt water that covers much of the earth broadly : the waters of the earth as distinguished from the land and air b : a body of salt water of second rank more or less landlocked the Mediterranean sea
quote:The sea, the world ocean or simply the ocean is the connected body of salty water that covers over 70% of Earth's surface (361,132,000 square kilometres (139,434,000 sq mi), with a total volume of roughly 1,332,000,000 cubic kilometres (320,000,000 cu mi)).
quote:sea 1. the continuous body of salt water covering the greater part of the earth's surface; ocean 2.a large body of salt water wholly or partly enclosed by land: the Red Sea, Irish Sea
quote:1. one of the larger bodies of salt water, less than an ocean, found on the earth's surface; a body of salt water of second rank, generally forming part of, or connecting with, an ocean or a larger sea; as, the Mediterranean Sea; the Sea of Marmora; the North Sea; the Carribean Sea
2. an inland body of water, esp. if large or if salt or brackish; as, the Caspian Sea; the Sea of Aral; sometimes, a small fresh-water lake; as, the Sea of Galilee
3. the ocean; the whole body of the salt water which covers a large part of the globe
Maybe this will be clearer: It looks from the cross sections like the strata in the Gulf, which are not measured any deeper than the Jurassic level, are the same strata as are found on the continents, whereas in the oceans we don't find those strata, as I understand it. If you think we do then fine, that can be part of the argument. But my understand has been that the strata in the oceans are not the same strata. But since those in the Gulf do seem to be the same strata I supposed that they had formed on the land and that the Gulf itself formed after they were all laid down, which seems to be the case with a lot of phenomena. In that sense it is not part of the oceans, even though now it might be right to call it a sea or part of the oceans. It's just not the same sea that was there during the laying down of the strata.
quote:But since those in the Gulf do seem to be the same strata I supposed that they had formed on the land and that the Gulf itself formed after they were all laid down, which seems to be the case with a lot of phenomena.
Since the evidence shows that many strata did not form on land that is a rather poor piece of reasoning. And there is a big difference between something seeming to be the case and you desperately wanting it to be the case, no matter what the evidence shows.
quote:In that sense it is not part of the oceans, even though now it might be right to call it a sea or part of the oceans.
It is obviously right to call it a sea since it is a large expanse of salt water connected to the ocean. Your weird ideas about the origins of the strata underneath it are completely irrelevant.
Sea in geography: a body of water adjacent to or connected to ocean.If too far away from ocean, then it is called lake. Sea in geology: area covered by ocean water or modified ocean water. Sea should be described by other qualifier, such as shallow sea, deep sea, open sea, closed sea, etc. In some cases, the described sea are synonymous to ocean.