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Snapshot Of Past Climate Reveals No Ice In Antarctica Millions Of Years Ago
ScienceDaily ^ | July 29, 2008 | Natural Environment Research Council and Cardiff University

Posted on 03/06/2009 1:04:30 PM PST by SunkenCiv

A snapshot of New Zealand's climate 40 million years ago reveals a greenhouse Earth, with warmer seas and little or no ice in Antarctica, according to research recently published in the journal Geology. The study suggests that Antarctica at that time was yet to develop extensive ice sheets. Back then, New Zealand was about 1100 km further south, at the same latitude as the southern tip of South America -- so was closer to Antarctica -- but the researchers found that the water temperature was 23-25°C at the sea surface and 11-13°C at the bottom. "This is too warm to be the Antarctic water we know today," said Dr Catherine (Cat) Burgess from Cardiff University and lead-author of the paper. "And the seawater chemistry shows there was little or no ice on the planet." These new insights come from the chemical analysis of exceptionally well preserved fossils of marine micro-organisms called foraminifers, discovered in marine rocks from New Zealand. The researchers tested the calcium carbonate shells from these fossils, which were found in 40 million-year-old sediments on a cliff face at Hampden Beach, South Island... "Our work provides another piece of evidence that, in a time period with relatively high carbon dioxide levels, temperatures were higher and ice sheets were much smaller and likely to have been completely absent." The rock sequence from the cliff face covers a time span of 70,000 years and shows cyclical temperature variations with a period of about 18,000 years. The temperature oscillation is likely to be related to the Earth's orbital patterns.

(Excerpt) Read more at sciencedaily.com ...


TOPICS: Astronomy; Science
KEYWORDS: antarctic; antarctica; australia; catastrophism; continentaldrift; foraminifers; newzealand; platetectonics
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Typical specimen of Globigerinatheka index from Hampden Beach. (Credit: Image courtesy of Cardiff University)

Snapshot Of Past Climate Reveals No Ice In Antarctica Millions Of Years Ago

1 posted on 03/06/2009 1:04:31 PM PST by SunkenCiv
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To: SunkenCiv

Global Warning Hysteria Alert!! Al Gore Mystified!!!


2 posted on 03/06/2009 1:07:18 PM PST by theDentist (Qwerty ergo typo : I type, therefore I misspelll)
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Mars On Earth: Arctic Crater Reveals Martian Secrets (pt 2)
Haughton Crater is the remaining scar from a high-speed collision between Earth and some heavy object from space about 23 million years ago. The comet or asteroid that created the crater was perhaps more than a mile (up to 2 kilometers) across and slammed into the forest that existed on Devon Island. Everything was annihilated for scores of miles in all directions. The impact churned up rock from more than a mile below the surface, vaporizing much of it. It's estimated that between 70 and 100 billion tons of rock was excavated from the crater in the moments just after the impact. While clouds of dust and gas filled the air, rock rained down from the sky, much of it in the form of what geologists now call breccia, which simply means "broken up." Scattered within the breccia are pieces of a rock called gneiss that normally is dark and dense. In Haughton Crater breccia, the "shocked gneiss" resembles pumice stone -- it's ash-white, porous and very lightweight.
Voices of the Rocks
by Robert Schoch
and Robert Aquinas McNally
(pp 1-3)
other supplier
"Yet, as it will, life returned to this site of complete devastation... The world those fossils described, the one that flourished on the order of 20 million years ago, during the early Miocene epoch, was strikingly different from today's Arctic... Devon Island was covered with a forest of birch trees and conifers, a landscape that one now finds about 2,000 miles to the south, in Minnesota, Wisconsin, and Maine. Now-extinct forms of rhinoceros and mouse deer browsed among the trees; shrews and pika-like relatives of modern rabbits darted through the shadows; and freshwater fish swam the lakes and streams...

"Even farther back, on the order of 45 to 65 million years ago, during the Paleocene and Eocene epochs, the fossil record shows Devon Island to have been still more profoundly different. Back then, what is now the Arctic was a region of swampy lowlands, slow-moving rivers, and towering forests of dawn redwood, kadsura, and ancestral forms of hickory, elm, birch, sycamore, and maple. Primitive fishes, crocodiles, salamanders, newts, and turtles inhabited the rivers and marshes, while the forests and meadows supported flying lemurs, early primates, forerunners of today's cats and dogs, and ancestors of the rhinos, tapirs, and horses."
Northern Crater Shows Prehistoric Deep Impact
by Ned Rozell
July 7, 1998
Haughton Crater is one of about 160 impact craters on Earth that range in size from 200 feet in diameter to 180 miles in diameter... About 15 miles from lip to lip, Haughton Crater is much smaller than Chicxalub, but it is an excellent crater to study because so little of it has eroded in millions of years. During the last ice age, Haughton Crater was protected by an ice field that sealed the crater from wind and extreme weather... Lakes formed in the bed of the crater, and it eventually began to resemble what it looks like today -- a 15-mile blemish that would catch your eye if you flew over it in an aircraft... Why study something that happened 22 million years ago?

3 posted on 03/06/2009 1:09:10 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·
 

4 posted on 03/06/2009 1:09:46 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: Rurudyne; steelyourfaith; Tolerance Sucks Rocks; xcamel

Somehow the story manages to shill about so-called global warming.


5 posted on 03/06/2009 1:10:46 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv

Let’s see there is fossil fuel in the arctic and in the arabian deserts, which are both now places that are incapable of sustaining the plant and animal life needed to create fossil fuel. Therefore, the climate changed radically eons before man even appeared. Yet we are supposedly changing the climate by not using flouresecent bulbs.


6 posted on 03/06/2009 1:10:46 PM PST by Lou Budvis (0bama Lied and the Market Died)
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To: SunkenCiv

Well, we better be looking at changing the Earth’s Orbital patterns then! Ohhhhh ALLLLLLLLLLLLLLLLL would you get right on that Orbital change please Mr. Gore?


7 posted on 03/06/2009 1:11:41 PM PST by Danae (Amerikan Unity My Ass)
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To: SunkenCiv
"Our work provides another piece of evidence that, in a time period with relatively high carbon dioxide levels, temperatures were higher and ice sheets were much smaller and likely to have been completely absent."

And the world did not end; life thrived and expanded. Mother Nature does just fine without our interference.

Note to ALgore

8 posted on 03/06/2009 1:11:48 PM PST by chit*chat
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To: SunkenCiv

“in a time period with relatively high carbon dioxide levels”

How high?
How many PPM?


9 posted on 03/06/2009 1:12:17 PM PST by Names Ash Housewares (Refusing to kneel before the socialist messiah. 1-20-13 Freedom Day.)
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To: Lou Budvis

Amusingly, the magnetic pole used to have one end in Arabia. ;’)


10 posted on 03/06/2009 1:12:37 PM PST by SunkenCiv (https://secure.freerepublic.com/donate/____________________ Profile updated Monday, January 12, 2009)
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To: SunkenCiv

Sumerians and others who write about the 12th planet and its cyclical effect on earth and the inner solar system, would say that is because Antarctica was not originally located at earth’s “South pole”

Some even speculate that Antarctica was once a tropical to temperate continent known as “atlantis”


11 posted on 03/06/2009 1:13:12 PM PST by silverleaf (Freedom's just another word for "nothing left to lose")
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To: SunkenCiv

amusingly some lore suggests that the great pyramid of Egypt is aligned at the original north pole


12 posted on 03/06/2009 1:14:44 PM PST by silverleaf (Freedom's just another word for "nothing left to lose")
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To: SunkenCiv
A snapshot of New Zealand's climate 40 million years ago

Wow, I'm amazed the film lasted that long.

13 posted on 03/06/2009 1:16:30 PM PST by Krodg
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To: SunkenCiv

Since there were dinosaurs on Antactica, this is not a big surprise


14 posted on 03/06/2009 1:19:20 PM PST by Lucius Cornelius Sulla ("men of intemperate minds cannot be free. Their passions forge their fetters." -- Edmund Burke)
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To: SunkenCiv

So.... who took the snapshot?

Did they use a Kodak Instamatic or a Brownie?


15 posted on 03/06/2009 1:22:21 PM PST by WayneS (Respect the 2nd Amendment; Repeal the 16th)
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To: SunkenCiv

It’s too bad there wasn’t a primordial Al Gore there to save these little creatures from extinct as the oceans cooled.


16 posted on 03/06/2009 1:24:10 PM PST by redangus
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To: Lou Budvis
Let’s see there is fossil fuel in the arctic and in the arabian deserts, which are both now places that are incapable of sustaining the plant and animal life needed to create fossil fuel. Therefore, the climate changed radically eons before man even appeared

Not necessarily. Over the time scales involved the continents slide around. Plate tectonics, you know. Antarctica hasn't always been at the south pole.

17 posted on 03/06/2009 1:27:45 PM PST by Sherman Logan (Everyone has a right to his own opinion, but not to his own facts.)
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To: SunkenCiv; silverleaf
Magnetic North moves quite a lot in a short period of time. Wonder how this effects the climate and such? http://gsc.nrcan.gc.ca/geomag/nmp/long_mvt_nmp_e.php
18 posted on 03/06/2009 1:29:09 PM PST by wolfcreek (There is no 2 party system only arrogant Pols and their handlers)
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To: SunkenCiv
I thought it was well known that Antarctica was near equatorial back then (and part of the Indian subcontinent)
19 posted on 03/06/2009 1:31:27 PM PST by xcamel (The urge to save humanity is always a false front for the urge to rule it. - H. L. Mencken)
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To: SunkenCiv

Bush’s fault


20 posted on 03/06/2009 1:32:42 PM PST by central_va (Co. C, 15th Va., Patrick Henry Rifles-The boys of Hanover Co.)
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