The study area is shown in the white rectangle.
(Cornée et al., Earth-Science Reviews, 2021)
Posted on 05/25/2021 12:21:58 PM PDT by BenLurkin
The emergence and disappearance of these archipelagos and "mega-islands" would also have been affected by the rise and fall of the sea level, controlled by glacial melt – something else the scientists modeled across a period of 1.5 million years.
Researchers factored seismic data collected from the region over the last 40 years into the calculations, as well as the current geography of the islands. The team was able to work backwards to the late Eocene period, matching island shorelines with the era when they would have emerged from the ocean.
"These periods of emergence may have favored the existence of episodic mega-islands and transient terrestrial connections between the Greater Antilles, the Lesser Antilles, and the northern part of the Aves Ridge (Saba Bank)," write the researchers.
"During the Pleistocene, archipelagos, and mega-islands formed repeatedly during glacial maximum episodes."
These land bridges are more common than you might think, existing for millions of years and then disappearing for millions more. There was once a connection between Russia and Canada, for instance, and between the UK and the rest of Europe.
While the idea of landmasses in the Antilles region has been proposed before, no one has looked in this much detail at this particular area. In the future, the researchers want to use the same techniques to extend their models southwards and cover the entire Caribbean Plate.
(Excerpt) Read more at sciencealert.com ...
“...the rise and fall of the sea level, controlled by glacial melt....”
Why doesn’t Glacier Growth control the Ocean Levels?
Pure speculation, nothing more. And they get paid for this?
Dang, I had no idea that SUVs were around that long ago.
And then Guam tipped over.
You know I was just thinking about how science threads attract so many cranky and snarky replies, and ruminating on the various causes.
“Why doesn’t Glacier Growth control the Ocean Levels?”
Put on your thinking cap!
“ something else the scientists modeled”
Science is now computer models…
Think climate change, covid deaths, etc
Just trust science.
That’s what Ma Erf may do very soon; put on her ice cap.
Have often thought this was the case flying through the islands and noting the apparent water depth going from PR to Guadeloupe and Martinique.
Did you come up with an answer as to why?
Did they sink because of climate change? /sarc
Migrated too many people and they tipped over.
I’ve got a sinking feeling about this.
I can’t breathe.
My investments in the Lesser Antilles are underwater.
Today, if you attempt to measure a model's scientific merit, you're labeled a 'conspiracy theorists.' Or - and more commonly - the prognostic time frame of the model is so distant in the future, refuting or validating the model becomes impossible and instead, the model must be accepted as a matter of faith. In this regard, science has become a kind of religion that has coopted sciencey vernacular.
A favorite axiom of professors of statistics is: All models are wrong, but some can be useful. But, we're not even allow to question models today much less assert their accuracy or impugn their utilitarian value.
“Greater” and “Lesser” Antilles? What kind of social justice is that?
Col. Churchward may have been right all along with his storied MU...
Thanks BenLurkin, nice twofer.
[snip] This power came forth out of the Atlantic Ocean, for in those days the Atlantic was navigable; and there was an island situated in front of the straits which are by you called the Pillars of Heracles; the island was larger than Libya and Asia put together, and was the way to other islands, and from these you might pass to the whole of the opposite continent which surrounded the true ocean; for this sea which is within the Straits of Heracles is only a harbour, having a narrow entrance, but that other is a real sea, and the surrounding land may be most truly called a boundless continent. [/snip] -- Plato, "Timaeus"
Thanks BenLurkin, nice twofer.
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