Prehistoric mystery: Wood found buried 20 feet below seafloor off Texas Coast

[MechAg94]

https://www.miamiherald.com/news/nation-world/national/article243757042.html

The discovery comes after wood turned up in core samples taken nine miles off Port Arthur, Texas.

That depth means the land was above water some 10,400 years ago, Dr. Amanda Evans, who led the expedition with funding from NOAA’s Office of Ocean Exploration and Research, told McClatchy News.

Sounds like they don't have definitive answers yet, but interesting.  

https://www.youtube.com/watch?v=Vj4DNGYe4jw
Saw it on this guy's channel.

https://www.youtube.com/watch?v=sD0j1j---90
Page-Ladson Site, Florida ~ 14,500 Year Old Underwater Site

[TommyGunn]

Well, the wood area was obviously above sea level millions of years ago,  then continents shifted,  some land subsided while other areas rose.... and the wood area wound up buried under 20ft. of seafloor.

America also used to have an inland sea that divided California and neighboring areas from the eastern half of the country.   Unfortunatly,  it's no longer there.  

Tectonic shift ..... tectonic plates subside and crunch into each other, building mountains,  drying up oceans, creating others .... there is a mystery? ?  

[JN01]

It's the lost city of Atlantis.  The citizens built too many fires, leading to the global warming that caused the flooding that destroyed them. Too bad they didn't have an Algore back then.

[French G.]

We hit burnt wood laid out like a foundation when we we six feet down in undisturbed Virginia red clay on a hilltop. We know the place was busy way back when the valley was a lake due to the immense amount of quartz spearpoints to be found there but that had to be old.

[AZRedhawk44]

Well, the wood area was obviously above sea level millions of years ago,  then continents shifted,  some land subsided while other areas rose.... and the wood area wound up buried under 20ft. of seafloor.

Except this is only 10,000 years ago.

I always wonder this when the Al Gore Warmists start crying about ocean rise (implying the ice caps are melting and this is where the water rise is traced).  Who says the beach (and the continent on top of it) isn't falling, rather than the ocean rising?  Or magma rising from sea floor vents, displacing seabed volume that used to be filled with water, driving the sea level higher?  Or whole mountain chains or subcontinents being formed underwater slowly, pushing ever upward by millimeters each year, driving water levels up on the shores of those continents already above the water?

None of these "absolutes" that we take for granted on a daily basis are absolute on the Earth's geologic scale.  I wouldn't be shocked if "sea level" varies in relationship to its distance from the center of the Earth's core through the Earth's history.  There's a fixed amount of soil, and water, to contour this ball (excluding contributions from SMOD events).  If more land is under water, the average depth of the ocean is less and sea level is higher in relation to the core.  If more land is above water, the average depth of the ocean is greater and sea level is lower in relation to the center of the core.

[230RN]

^ It also could be this raising the sea level:

www.gifs.com/gif/73p6p1

Or, "Why planets end up being round."

Terry

PIC credit: https://gifs.com/gif/watch-pacifica-coastal-erosion-caught-on-drone-video-73p6p1

[Brad Johnson]

Except this is only 10,000 years ago.

Most reliable data I can find indicates sea levels were some 400 feet lower at the peak of the last ice age, or roughly 20,000 years ago. Finding prehistoric vegetation at a depth of 20 ft is not only possible, it's highly likely. More than a few offshore archaeological assessments are hunting for coastal Ice Age civilizations by examining previous shorelines, most now many miles out to sea.

Brad

[Ben]

Most reliable data I can find indicates sea levels were some 400 feet lower at the peak of the last ice age, or roughly 20,000 years ago. Finding prehistoric vegetation at a depth of 20 ft is not only possible, it's highly likely. More than a few offshore archaeological assessments are hunting for coastal Ice Age civilizations by examining previous shorelines, most now many miles out to sea.

Brad

I actually get quite irritated because there are dozens - maybe hundreds - of submerged nearshore maritime archeological finds over the last 50 years that indicate dryland human occupation, but we're still at the first time in history that ocean levels will rise and destroy civilization. 

[K Frame]

On the flip side, as glaciers and ice pack melt, archaeologists are finding TONS of ice age artifacts that are helping to rewrite the narrative of human expansion and impact.

[Ben]

On the flip side, as glaciers and ice pack melt, archaeologists are finding TONS of ice age artifacts that are helping to rewrite the narrative of human expansion and impact.

Also true.

[WLJ]

Nope nope, never happened. Everyone knows feels that climate change never changed until Orange Man spread his hate across the earth. The feelings are settled.

[MillCreek]

^^^And isn't the changes in sea level and land exposure responsible for early humans migrating from Siberia to North America?

[MechAg94]

Most reliable data I can find indicates sea levels were some 400 feet lower at the peak of the last ice age, or roughly 20,000 years ago. Finding prehistoric vegetation at a depth of 20 ft is not only possible, it's highly likely. More than a few offshore archaeological assessments are hunting for coastal Ice Age civilizations by examining previous shorelines, most now many miles out to sea.

Brad

Based on some Randall Carlson stuff I have listened to recently, he was saying the last ice age ended somewhere around 9000 to 10,000 years ago.  He was trying to prove some sort of comet or asteroid impact caused a fast shift that melted off the ice quickly. 

[charby]

I actually get quite irritated because there are dozens - maybe hundreds - of submerged nearshore maritime archeological finds over the last 50 years that indicate dryland human occupation, but we're still at the first time in history that ocean levels will rise and destroy civilization. 

A crap ton on shoals in the English channel.

[MechAg94]

^^^And isn't the changes in sea level and land exposure responsible for early humans migrating from Siberia to North America?

I need to figure out where to find it, but Randall Carlson showed a map of what the land would look like if the sea level were 300 to 400 feet lower.  Imagine Alaska and the Aleutian Islands all above water across to Siberia.  300 feet exposes a great deal of land mass.  

[MechAg94]

The other part is brings to mind is about "frail" ecosystems.  If the climate and ocean levels are bouncing around that much (geologic time), then life on earth reacts just fine to changes and all we need to do is not actively destroy it.  I have heard people talk about the coral reefs and how fragile they are.  If they are still surviving, they are not as fragile as they think.  Also, there seem to be human built ruins all over South America leading one to think the jungles there have been cut down before probably many times. 

[HankB]

Except this is only 10,000 years ago.

There are quite a few now underwater buildings around the edge of the Mediterranean, which show rising seas or sinking lands can submerge human structures in far less than 10,000 years. (Just one example: https://en.wikipedia.org/wiki/Heracleion )

[TommyGunn]

Except this is only 10,000 years ago.

I always wonder this when the Al Gore Warmists start crying about ocean rise (implying the ice caps are melting and this is where the water rise is traced).  Who says the beach (and the continent on top of it) isn't falling, rather than the ocean rising?  Or magma rising from sea floor vents, displacing seabed volume that used to be filled with water, driving the sea level higher?  Or whole mountain chains or subcontinents being formed underwater slowly, pushing ever upward by millimeters each year, driving water levels up on the shores of those continents already above the water?

None of these "absolutes" that we take for granted on a daily basis are absolute on the Earth's geologic scale.  I wouldn't be shocked if "sea level" varies in relationship to its distance from the center of the Earth's core through the Earth's history.  There's a fixed amount of soil, and water, to contour this ball (excluding contributions from SMOD events).  If more land is under water, the average depth of the ocean is less and sea level is higher in relation to the core.  If more land is above water, the average depth of the ocean is greater and sea level is lower in relation to the center of the core.

Ok ,  the article wouldn't load for me.  I'll go along with Brad Johnson's post #6 then.   Rising sea levels.

[230RN]

I dunno, my eyeballing of the 400,000 year Vostok ice cores indicate a minor cycle of about 11,000 years.  It also, according to my trend-line sensing apparatus, that we're heading into another ice age with short-term warming periods.

The whole graph is kind of "noisy" and my feeling is that to select 200 year segments and make predictions based on that is nonsense.

Projecting from the temperatures yesterday and today, the temperature by 01 Jan 2021 ought to be about 108°F.

[Fly320s]

Projecting from the temperatures yesterday and today, the temperature by 01 Jan 2021 ought to be about 108°F.

I guess I'll put away my snowblower.

[Fly320s]

300 to 400 foot change in mean sea level.

Is that because of ice melting or land sinking or both?  I am assuming that the total amount of water on Earth hasn't changed much since this planet was built by Slartibartfast on Magrathea.

[Brad Johnson]

300 to 400 foot change in mean sea level.

Is that because of ice melting or land sinking or both?  I am assuming that the total amount of water on Earth hasn't changed much since this planet was built by Slartibartfast on Magrathea.

Yes to both, but in the context of being location dependent. Seashore changes were mostly the result of levels varying because so much water was tied up in ice. Inland waterways were more dependent on landform level variations due to the weight of ice. If I'm remembering college geology correctly, much of the New Madrid quake zone activity can be attributed to landform rebound.

Brad

[MechAg94]

300 to 400 foot change in mean sea level.

Is that because of ice melting or land sinking or both?  I am assuming that the total amount of water on Earth hasn't changed much since this planet was built by Slartibartfast on Magrathea.

I heard the sea level was lower due mainly to all the water above sea level in glaciers.  Even though a lot of land mass is covered in ice, a lot of additional coastal areas would be above sea level.  

I also heard it theorized that with all that weight sitting on some areas, there might be temporary shifts in height of land masses.  Randall Carlson theorized the area around the Azores may have been pushed up higher out of the water by all the ice pushing down on land masses in North America and Europe.  I don't know if that is generally accepted or not.  His idea is that could be Atlantis and it could have dropped below sea level pretty quick once the glaciers melted.  He was also trying to prove the last ice age ended abruptly with some sort of comet/asteroid impact in North America that rapidly melted the ice and shifted the climate warmer.  It was in one or two of his Joe Rogan interviews.  Fascinating stuff even if it doesn't pan out.