Posted on 12/12/2015 8:29:30 PM PST by SunkenCiv
An international team of experts, including researchers from the Camborne School of Mines, have found evidence of a large and abrupt cooling of the Earth's temperature during the Jurassic Period, which lasted millions of years.
The scientists found that the cooling coincided with a large-scale volcanic event -- called the North Sea Dome -- which restricted the flow of ocean water and the associated heat that it carried from the equator towards the North Pole region.
The team suggest that it is this volcanic event, preventing the ocean flow, rather than a change in CO2 in the atmosphere (which causes today's climate change), that led to an extended Ice age in a period more synonymous with very warm conditions.
Geology experts Professor Stephen Hesselbo and Dr Clemens Ullmann, both from the Camborne School of Mines, based at Exeter's Penryn Campus in Cornwall, took part in the study.
Professor Hesselbo said: "We tend to think of the Jurassic as a warm 'greenhouse' world where high temperatures were governed by high atmospheric carbon dioxide contents. This new study suggests that re-organization of oceanic current patterns may also have triggered large scale climate changes."
...The team of scientists spent 10 years constructing a record of seawater temperature change using fossil mollusc shells. They found that during the same period that the North Sea Dome event occurred, the Earth experienced a significant and fast cooling in temperature...
Professor Hesselbo added: "Although we have known about the occurrence of cold periods during greenhouse times for a while, their origins have remained mysterious. This work suggests a mechanism at play that may also have been important for driving other climate change events in the Jurassic and at other times in Earth history."
(Excerpt) Read more at eurekalert.org ...
I think a series of asteroids hit along with the 6 mile one.
The earth rang from the hits which triggered the volcanoes which helped kill off what were left of the dinosaurs that did not get incinerated.
You respond as a troll, you have no complaint about replies to you — of course, you won’t accept that fact, because you’re a hypocrite.
“So now university faculty will have to add yachts to their grant applications on climate change in order to fully study ocean currents and their likely demise of the human race.”
Don’t forget the “interns” of both sexes who’ll be studying under them.
L
Oh dear...that gurgling sound you hear is someone's credibility circling the drain.
I guess all those thousands of feet of layers of different sediments just don’t prove anything to some people. I was driving across country from southern Illinois to Virginia and was totally impressed with the hundreds of miles of flat sedimentary layers in the rocks along the highway. You could see how layers changed as new layers gradually became the ones that were visible. Since each layer probably took 10,000 years per inch to form, it just astounded me.
It is not inconceivable that there was also an iridium-rich meteor of some size 170 mya. Regarding the volcanism, was this by any chance the event that left us with the Giant’s Causway?
Actually, I don’t think we are dealing with a DNC plant here unless you have additional information. A DNC type might argue over volcano vs. meteor, but probably wouldn’t be concerned about the long age of the Jurassic or any other geological age, that sounds more like YEC.
The team suggest that it is this volcanic event, preventing the ocean flow, rather than a change in CO2 in the atmosphere (which causes today’s climate changelending more substance to the theory that CO2 rises with temperature rather than causing the temperature to rise),
This article is a press release, no doubt written by the University Press Relations department. I'd be surprised if this comment can be found in the original published research. Very often the popular press reports are considerably different from the conclusions reported in the published scientific piece. Sometimes, the researchers themselves do this, one piece is to impress the grant givers and the real published research must satisfy their colleagues.
Still can’t answer the real questions. Insult away....Again, do you read any of the articles you post?
The answers are available in books and on the internet — bit you’re a troll, and aren’t interested in that, only in troll behavior, like fighting in a science topic. That just makes your troll status all the more clear to all comers.
Still can’t answer the question. Again, do you read any of the articles you post? It’s an easy question. Yes or no?
"Prove it" isn't a question, jackass. It's your troll opus in this particular topic. Hence "shove it" was my quite correct response. You have no interest in science or science topics, so STFU.
Go away little one, you can’t even answer a simple question. You are not serious and you do not know anything about what you are posting, otherwise you would not be afraid to answer the question. I will not waste my time with you little one.
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